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/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label40_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 02:25:36,662 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 02:25:36,664 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 02:25:36,677 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 02:25:36,678 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 02:25:36,679 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 02:25:36,681 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 02:25:36,685 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 02:25:36,694 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 02:25:36,695 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 02:25:36,696 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 02:25:36,696 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 02:25:36,697 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 02:25:36,698 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 02:25:36,699 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 02:25:36,701 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 02:25:36,702 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 02:25:36,704 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 02:25:36,711 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 02:25:36,716 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 02:25:36,717 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 02:25:36,718 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 02:25:36,723 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 02:25:36,732 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 02:25:36,747 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 02:25:36,747 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 02:25:36,748 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 02:25:36,748 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 02:25:36,748 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 02:25:36,749 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 02:25:36,749 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 02:25:36,749 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 02:25:36,749 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 02:25:36,749 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 02:25:36,750 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 02:25:36,750 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 02:25:36,750 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 02:25:36,751 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 02:25:36,751 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 02:25:36,751 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 02:25:36,751 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 02:25:36,751 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 02:25:36,752 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 02:25:36,752 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 02:25:36,752 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 02:25:36,752 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 02:25:36,752 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 02:25:36,753 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 02:25:36,753 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 02:25:36,753 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 02:25:36,753 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 02:25:36,753 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 02:25:36,754 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 02:25:36,754 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 02:25:36,754 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 02:25:36,754 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 02:25:36,754 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 02:25:36,755 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 02:25:36,813 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 02:25:36,830 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 02:25:36,833 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 02:25:36,835 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 02:25:36,835 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 02:25:36,836 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label40_true-unreach-call.c [2018-10-24 02:25:36,894 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b4198d4b8/2865534e3b6749eb8a04076627f2218f/FLAG5c4739d1c [2018-10-24 02:25:37,775 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 02:25:37,776 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label40_true-unreach-call.c [2018-10-24 02:25:37,823 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b4198d4b8/2865534e3b6749eb8a04076627f2218f/FLAG5c4739d1c [2018-10-24 02:25:37,842 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b4198d4b8/2865534e3b6749eb8a04076627f2218f [2018-10-24 02:25:37,858 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 02:25:37,861 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 02:25:37,862 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 02:25:37,862 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 02:25:37,867 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 02:25:37,868 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:25:37" (1/1) ... [2018-10-24 02:25:37,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e66237e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:37, skipping insertion in model container [2018-10-24 02:25:37,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:25:37" (1/1) ... [2018-10-24 02:25:37,884 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 02:25:38,153 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 02:25:40,047 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 02:25:40,052 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 02:25:41,159 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 02:25:41,215 INFO L193 MainTranslator]: Completed translation [2018-10-24 02:25:41,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:41 WrapperNode [2018-10-24 02:25:41,216 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 02:25:41,216 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 02:25:41,217 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 02:25:41,217 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 02:25:41,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:41" (1/1) ... [2018-10-24 02:25:41,316 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:41" (1/1) ... [2018-10-24 02:25:41,947 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 02:25:41,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 02:25:41,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 02:25:41,948 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 02:25:41,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:41" (1/1) ... [2018-10-24 02:25:41,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:41" (1/1) ... [2018-10-24 02:25:42,008 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:41" (1/1) ... [2018-10-24 02:25:42,008 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:41" (1/1) ... [2018-10-24 02:25:42,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:41" (1/1) ... [2018-10-24 02:25:42,271 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:41" (1/1) ... [2018-10-24 02:25:42,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:41" (1/1) ... [2018-10-24 02:25:42,528 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 02:25:42,529 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 02:25:42,529 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 02:25:42,529 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 02:25:42,531 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 02:25:42,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 02:25:42,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 02:25:42,600 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-10-24 02:25:42,601 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-10-24 02:25:42,601 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-10-24 02:25:42,601 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-10-24 02:25:42,601 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 02:25:42,601 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 02:25:42,602 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 02:25:42,602 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 02:25:42,602 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 02:25:42,602 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 02:25:42,602 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 02:25:42,603 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 02:25:42,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 02:25:42,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 02:25:42,604 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 02:25:42,604 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 02:25:59,984 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 02:25:59,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:25:59 BoogieIcfgContainer [2018-10-24 02:25:59,985 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 02:25:59,986 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 02:25:59,986 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 02:25:59,990 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 02:25:59,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:25:37" (1/3) ... [2018-10-24 02:25:59,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ed8662d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:25:59, skipping insertion in model container [2018-10-24 02:25:59,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:41" (2/3) ... [2018-10-24 02:25:59,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ed8662d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:25:59, skipping insertion in model container [2018-10-24 02:25:59,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:25:59" (3/3) ... [2018-10-24 02:25:59,994 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label40_true-unreach-call.c [2018-10-24 02:26:00,004 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 02:26:00,015 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 02:26:00,033 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 02:26:00,086 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 02:26:00,087 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 02:26:00,087 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 02:26:00,087 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 02:26:00,087 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 02:26:00,087 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 02:26:00,087 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 02:26:00,088 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 02:26:00,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-10-24 02:26:00,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-24 02:26:00,164 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:26:00,165 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] [2018-10-24 02:26:00,167 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:26:00,172 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:26:00,173 INFO L82 PathProgramCache]: Analyzing trace with hash 779425490, now seen corresponding path program 1 times [2018-10-24 02:26:00,175 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:26:00,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:26:00,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:26:00,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:26:00,232 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:26:00,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:26:00,647 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 02:26:00,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:26:00,782 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:26:00,783 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 02:26:00,783 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:26:00,789 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 02:26:00,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 02:26:00,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 02:26:00,808 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-10-24 02:26:15,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:26:15,517 INFO L93 Difference]: Finished difference Result 4998 states and 9417 transitions. [2018-10-24 02:26:15,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 02:26:15,525 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2018-10-24 02:26:15,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:26:15,577 INFO L225 Difference]: With dead ends: 4998 [2018-10-24 02:26:15,577 INFO L226 Difference]: Without dead ends: 3218 [2018-10-24 02:26:15,591 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 02:26:15,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3218 states. [2018-10-24 02:26:15,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3218 to 3215. [2018-10-24 02:26:15,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3215 states. [2018-10-24 02:26:15,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3215 states to 3215 states and 5854 transitions. [2018-10-24 02:26:15,815 INFO L78 Accepts]: Start accepts. Automaton has 3215 states and 5854 transitions. Word has length 53 [2018-10-24 02:26:15,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:26:15,816 INFO L481 AbstractCegarLoop]: Abstraction has 3215 states and 5854 transitions. [2018-10-24 02:26:15,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 02:26:15,816 INFO L276 IsEmpty]: Start isEmpty. Operand 3215 states and 5854 transitions. [2018-10-24 02:26:15,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-24 02:26:15,831 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:26:15,832 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:26:15,832 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:26:15,833 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:26:15,834 INFO L82 PathProgramCache]: Analyzing trace with hash 401616796, now seen corresponding path program 1 times [2018-10-24 02:26:15,834 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:26:15,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:26:15,836 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:26:15,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:26:15,836 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:26:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:26:16,266 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 02:26:16,637 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:26:16,638 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:26:16,638 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 02:26:16,638 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:26:16,640 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 02:26:16,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 02:26:16,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 02:26:16,642 INFO L87 Difference]: Start difference. First operand 3215 states and 5854 transitions. Second operand 6 states. [2018-10-24 02:26:45,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:26:45,641 INFO L93 Difference]: Finished difference Result 9340 states and 16946 transitions. [2018-10-24 02:26:45,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 02:26:45,642 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-10-24 02:26:45,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:26:45,678 INFO L225 Difference]: With dead ends: 9340 [2018-10-24 02:26:45,678 INFO L226 Difference]: Without dead ends: 6131 [2018-10-24 02:26:45,689 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 02:26:45,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6131 states. [2018-10-24 02:26:45,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6131 to 6091. [2018-10-24 02:26:45,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6091 states. [2018-10-24 02:26:45,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6091 states to 6091 states and 9637 transitions. [2018-10-24 02:26:45,872 INFO L78 Accepts]: Start accepts. Automaton has 6091 states and 9637 transitions. Word has length 125 [2018-10-24 02:26:45,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:26:45,873 INFO L481 AbstractCegarLoop]: Abstraction has 6091 states and 9637 transitions. [2018-10-24 02:26:45,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 02:26:45,873 INFO L276 IsEmpty]: Start isEmpty. Operand 6091 states and 9637 transitions. [2018-10-24 02:26:45,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-24 02:26:45,884 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:26:45,884 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:26:45,884 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:26:45,885 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:26:45,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1122712729, now seen corresponding path program 1 times [2018-10-24 02:26:45,885 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:26:45,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:26:45,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:26:45,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:26:45,887 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:26:45,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:26:46,216 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 02:26:46,323 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:26:46,324 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:26:46,324 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 02:26:46,324 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:26:46,325 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 02:26:46,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 02:26:46,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 02:26:46,325 INFO L87 Difference]: Start difference. First operand 6091 states and 9637 transitions. Second operand 6 states. [2018-10-24 02:27:10,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:27:10,098 INFO L93 Difference]: Finished difference Result 21091 states and 34228 transitions. [2018-10-24 02:27:10,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 02:27:10,098 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2018-10-24 02:27:10,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:27:10,189 INFO L225 Difference]: With dead ends: 21091 [2018-10-24 02:27:10,189 INFO L226 Difference]: Without dead ends: 15006 [2018-10-24 02:27:10,217 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 02:27:10,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15006 states. [2018-10-24 02:27:10,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15006 to 14817. [2018-10-24 02:27:10,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14817 states. [2018-10-24 02:27:10,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14817 states to 14817 states and 22424 transitions. [2018-10-24 02:27:10,602 INFO L78 Accepts]: Start accepts. Automaton has 14817 states and 22424 transitions. Word has length 127 [2018-10-24 02:27:10,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:27:10,603 INFO L481 AbstractCegarLoop]: Abstraction has 14817 states and 22424 transitions. [2018-10-24 02:27:10,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 02:27:10,603 INFO L276 IsEmpty]: Start isEmpty. Operand 14817 states and 22424 transitions. [2018-10-24 02:27:10,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-24 02:27:10,609 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:27:10,609 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:27:10,611 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:27:10,611 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:27:10,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1500340952, now seen corresponding path program 1 times [2018-10-24 02:27:10,612 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:27:10,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:27:10,614 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:27:10,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:27:10,614 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:27:10,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:27:11,025 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:27:11,026 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:27:11,026 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 02:27:11,026 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:27:11,026 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 02:27:11,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 02:27:11,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 02:27:11,027 INFO L87 Difference]: Start difference. First operand 14817 states and 22424 transitions. Second operand 6 states. [2018-10-24 02:28:00,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:28:00,364 INFO L93 Difference]: Finished difference Result 58684 states and 93370 transitions. [2018-10-24 02:28:00,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 02:28:00,367 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 149 [2018-10-24 02:28:00,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:28:00,585 INFO L225 Difference]: With dead ends: 58684 [2018-10-24 02:28:00,586 INFO L226 Difference]: Without dead ends: 43873 [2018-10-24 02:28:00,670 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 02:28:00,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43873 states. [2018-10-24 02:28:01,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43873 to 43779. [2018-10-24 02:28:01,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43779 states. [2018-10-24 02:28:02,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43779 states to 43779 states and 63266 transitions. [2018-10-24 02:28:02,091 INFO L78 Accepts]: Start accepts. Automaton has 43779 states and 63266 transitions. Word has length 149 [2018-10-24 02:28:02,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:28:02,092 INFO L481 AbstractCegarLoop]: Abstraction has 43779 states and 63266 transitions. [2018-10-24 02:28:02,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 02:28:02,092 INFO L276 IsEmpty]: Start isEmpty. Operand 43779 states and 63266 transitions. [2018-10-24 02:28:02,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-24 02:28:02,096 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:28:02,097 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:28:02,097 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:28:02,097 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:28:02,098 INFO L82 PathProgramCache]: Analyzing trace with hash 463189276, now seen corresponding path program 1 times [2018-10-24 02:28:02,098 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:28:02,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:28:02,099 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:28:02,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:28:02,099 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:28:02,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:28:02,437 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:28:02,437 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:28:02,438 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 02:28:02,438 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:28:02,438 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 02:28:02,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 02:28:02,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 02:28:02,439 INFO L87 Difference]: Start difference. First operand 43779 states and 63266 transitions. Second operand 5 states. [2018-10-24 02:28:34,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:28:34,319 INFO L93 Difference]: Finished difference Result 132718 states and 204473 transitions. [2018-10-24 02:28:34,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 02:28:34,322 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2018-10-24 02:28:34,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:28:34,671 INFO L225 Difference]: With dead ends: 132718 [2018-10-24 02:28:34,672 INFO L226 Difference]: Without dead ends: 88945 [2018-10-24 02:28:34,770 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 02:28:34,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88945 states. [2018-10-24 02:28:36,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88945 to 88211. [2018-10-24 02:28:36,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88211 states. [2018-10-24 02:28:36,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88211 states to 88211 states and 122114 transitions. [2018-10-24 02:28:36,467 INFO L78 Accepts]: Start accepts. Automaton has 88211 states and 122114 transitions. Word has length 158 [2018-10-24 02:28:36,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:28:36,467 INFO L481 AbstractCegarLoop]: Abstraction has 88211 states and 122114 transitions. [2018-10-24 02:28:36,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 02:28:36,468 INFO L276 IsEmpty]: Start isEmpty. Operand 88211 states and 122114 transitions. [2018-10-24 02:28:36,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-24 02:28:36,474 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:28:36,474 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:28:36,474 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:28:36,475 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:28:36,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1081973083, now seen corresponding path program 1 times [2018-10-24 02:28:36,475 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:28:36,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:28:36,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:28:36,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:28:36,476 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:28:36,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:28:36,738 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:28:36,738 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:28:36,738 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 02:28:36,739 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:28:36,739 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 02:28:36,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 02:28:36,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 02:28:36,740 INFO L87 Difference]: Start difference. First operand 88211 states and 122114 transitions. Second operand 6 states. [2018-10-24 02:29:00,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:29:00,435 INFO L93 Difference]: Finished difference Result 208099 states and 304624 transitions. [2018-10-24 02:29:00,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 02:29:00,436 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 186 [2018-10-24 02:29:00,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:29:00,807 INFO L225 Difference]: With dead ends: 208099 [2018-10-24 02:29:00,808 INFO L226 Difference]: Without dead ends: 119894 [2018-10-24 02:29:00,995 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 02:29:01,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119894 states. [2018-10-24 02:29:02,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119894 to 119539. [2018-10-24 02:29:02,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119539 states. [2018-10-24 02:29:02,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119539 states to 119539 states and 161762 transitions. [2018-10-24 02:29:04,018 INFO L78 Accepts]: Start accepts. Automaton has 119539 states and 161762 transitions. Word has length 186 [2018-10-24 02:29:04,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:29:04,019 INFO L481 AbstractCegarLoop]: Abstraction has 119539 states and 161762 transitions. [2018-10-24 02:29:04,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 02:29:04,019 INFO L276 IsEmpty]: Start isEmpty. Operand 119539 states and 161762 transitions. [2018-10-24 02:29:04,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-24 02:29:04,036 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:29:04,037 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:29:04,037 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:29:04,037 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:29:04,038 INFO L82 PathProgramCache]: Analyzing trace with hash 106766042, now seen corresponding path program 1 times [2018-10-24 02:29:04,038 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:29:04,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:29:04,039 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:29:04,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:29:04,039 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:29:04,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:29:04,293 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 92 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 02:29:04,293 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 02:29:04,293 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 02:29:04,294 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 225 with the following transitions: [2018-10-24 02:29:04,296 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5418], [5426], [5434], [5442], [5450], [5458], [5466], [5474], [5482], [5490], [5498], [5506], [5514], [5522], [5530], [5538], [5546], [5550], [5552], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5719], [5722], [5726], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5823], [5827], [5838], [5842], [5846], [5850], [5854], [5858], [5862], [5866], [5870], [5874], [5877], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-10-24 02:29:04,388 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 02:29:04,389 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 02:29:07,371 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 02:29:07,410 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 02:29:07,411 INFO L272 AbstractInterpreter]: Visited 104 different actions 104 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 02:29:07,455 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:29:07,455 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 02:29:10,353 INFO L232 lantSequenceWeakener]: Weakened 214 states. On average, predicates are now at 75.72% of their original sizes. [2018-10-24 02:29:10,354 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 02:29:10,704 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 02:29:10,705 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 02:29:10,705 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 02:29:10,705 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:29:10,706 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 02:29:10,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 02:29:10,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 02:29:10,707 INFO L87 Difference]: Start difference. First operand 119539 states and 161762 transitions. Second operand 7 states. Received shutdown request... [2018-10-24 02:29:26,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 02:29:26,985 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 02:29:26,992 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 02:29:26,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:29:26 BoogieIcfgContainer [2018-10-24 02:29:26,993 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 02:29:26,994 INFO L168 Benchmark]: Toolchain (without parser) took 229135.15 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 1.8 GB in the end (delta: -387.2 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-24 02:29:26,995 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 02:29:26,997 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3354.22 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 382.2 MB). Peak memory consumption was 382.2 MB. Max. memory is 7.1 GB. [2018-10-24 02:29:26,998 INFO L168 Benchmark]: Boogie Procedure Inliner took 730.56 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 868.2 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. [2018-10-24 02:29:27,001 INFO L168 Benchmark]: Boogie Preprocessor took 580.91 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 59.5 MB). Peak memory consumption was 59.5 MB. Max. memory is 7.1 GB. [2018-10-24 02:29:27,001 INFO L168 Benchmark]: RCFGBuilder took 17456.47 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 161.5 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 503.3 MB). Peak memory consumption was 664.8 MB. Max. memory is 7.1 GB. [2018-10-24 02:29:27,003 INFO L168 Benchmark]: TraceAbstraction took 207007.00 ms. Allocated memory was 2.6 GB in the beginning and 3.9 GB in the end (delta: 1.3 GB). Free memory was 1.7 GB in the beginning and 1.8 GB in the end (delta: -59.6 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-24 02:29:27,013 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 3354.22 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 382.2 MB). Peak memory consumption was 382.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 730.56 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 868.2 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 580.91 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 59.5 MB). Peak memory consumption was 59.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17456.47 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 161.5 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 503.3 MB). Peak memory consumption was 664.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 207007.00 ms. Allocated memory was 2.6 GB in the beginning and 3.9 GB in the end (delta: 1.3 GB). Free memory was 1.7 GB in the beginning and 1.8 GB in the end (delta: -59.6 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 154]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 154). Cancelled while BasicCegarLoop was constructing difference of abstraction (119539states) and FLOYD_HOARE automaton (currently 7 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (9692 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 206.9s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 190.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3695 SDtfs, 36767 SDslu, 4432 SDs, 0 SdLazy, 66207 SolverSat, 14265 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 154.4s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 276 GetRequests, 232 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=119539occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9958330458778888 AbsIntWeakeningRatio, 0.12556053811659193 AbsIntAvgWeakeningVarsNumRemoved, 1037.0313901345291 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 6.9s AutomataMinimizationTime, 6 MinimizatonAttempts, 1415 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 1022 NumberOfCodeBlocks, 1022 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1015 ConstructedInterpolants, 0 QuantifiedInterpolants, 662486 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 327/392 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown