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/Problem03_label09_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 22:42:30,716 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 22:42:30,721 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 22:42:30,737 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 22:42:30,738 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 22:42:30,741 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 22:42:30,743 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 22:42:30,746 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 22:42:30,748 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 22:42:30,748 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 22:42:30,749 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 22:42:30,750 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 22:42:30,751 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 22:42:30,751 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 22:42:30,753 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 22:42:30,753 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 22:42:30,754 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 22:42:30,756 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 22:42:30,760 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 22:42:30,762 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 22:42:30,763 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 22:42:30,765 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 22:42:30,768 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-26 22:42:30,785 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 [2018-10-26 22:42:30,814 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 22:42:30,814 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 22:42:30,815 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 22:42:30,815 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 22:42:30,815 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 22:42:30,815 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 22:42:30,816 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 22:42:30,816 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 22:42:30,816 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-26 22:42:30,816 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 22:42:30,816 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 22:42:30,817 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 22:42:30,817 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 22:42:30,818 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 22:42:30,818 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 22:42:30,818 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 22:42:30,818 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 22:42:30,818 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 22:42:30,819 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 22:42:30,819 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 22:42:30,819 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 22:42:30,819 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 22:42:30,819 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 22:42:30,820 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 22:42:30,820 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:42:30,820 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 22:42:30,820 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 22:42:30,820 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 22:42:30,820 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 22:42:30,821 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 22:42:30,821 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 22:42:30,821 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 22:42:30,821 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 22:42:30,822 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-26 22:42:30,871 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 22:42:30,884 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 22:42:30,888 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 22:42:30,892 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 22:42:30,893 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 22:42:30,894 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label09_false-unreach-call.c [2018-10-26 22:42:30,960 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6f3d78ae7/12b9bdc345b94185b527846bb3e81996/FLAGf9d1a260f [2018-10-26 22:42:31,628 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 22:42:31,629 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label09_false-unreach-call.c [2018-10-26 22:42:31,647 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6f3d78ae7/12b9bdc345b94185b527846bb3e81996/FLAGf9d1a260f [2018-10-26 22:42:31,664 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6f3d78ae7/12b9bdc345b94185b527846bb3e81996 [2018-10-26 22:42:31,675 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 22:42:31,677 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 22:42:31,678 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 22:42:31,678 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 22:42:31,682 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 22:42:31,683 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:42:31" (1/1) ... [2018-10-26 22:42:31,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b295a00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:42:31, skipping insertion in model container [2018-10-26 22:42:31,686 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:42:31" (1/1) ... [2018-10-26 22:42:31,697 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 22:42:31,780 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 22:42:32,498 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:42:32,504 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 22:42:32,885 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:42:32,910 INFO L193 MainTranslator]: Completed translation [2018-10-26 22:42:32,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:42:32 WrapperNode [2018-10-26 22:42:32,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 22:42:32,913 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 22:42:32,913 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 22:42:32,913 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 22:42:32,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:42:32" (1/1) ... [2018-10-26 22:42:32,976 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:42:32" (1/1) ... [2018-10-26 22:42:33,224 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 22:42:33,225 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 22:42:33,225 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 22:42:33,225 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 22:42:33,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:42:32" (1/1) ... [2018-10-26 22:42:33,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:42:32" (1/1) ... [2018-10-26 22:42:33,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:42:32" (1/1) ... [2018-10-26 22:42:33,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:42:32" (1/1) ... [2018-10-26 22:42:33,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:42:32" (1/1) ... [2018-10-26 22:42:33,317 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:42:32" (1/1) ... [2018-10-26 22:42:33,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:42:32" (1/1) ... [2018-10-26 22:42:33,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 22:42:33,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 22:42:33,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 22:42:33,353 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 22:42:33,354 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:42:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:42:33,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 22:42:33,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 22:42:33,422 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-26 22:42:33,422 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-26 22:42:33,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 22:42:33,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 22:42:33,422 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 22:42:33,423 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 22:42:38,098 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 22:42:38,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:42:38 BoogieIcfgContainer [2018-10-26 22:42:38,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 22:42:38,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 22:42:38,103 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 22:42:38,108 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 22:42:38,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:42:31" (1/3) ... [2018-10-26 22:42:38,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760b9175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:42:38, skipping insertion in model container [2018-10-26 22:42:38,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:42:32" (2/3) ... [2018-10-26 22:42:38,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760b9175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:42:38, skipping insertion in model container [2018-10-26 22:42:38,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:42:38" (3/3) ... [2018-10-26 22:42:38,115 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label09_false-unreach-call.c [2018-10-26 22:42:38,126 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 22:42:38,140 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 22:42:38,157 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 22:42:38,198 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 22:42:38,198 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 22:42:38,198 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 22:42:38,198 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 22:42:38,199 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 22:42:38,199 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 22:42:38,199 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 22:42:38,199 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 22:42:38,229 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-26 22:42:38,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-10-26 22:42:38,247 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:42:38,248 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:42:38,251 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:42:38,257 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:42:38,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1379578932, now seen corresponding path program 1 times [2018-10-26 22:42:38,261 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 22:42:38,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:42:38,311 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:42:38,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:42:38,311 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 22:42:38,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:42:39,219 WARN L179 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-26 22:42:39,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:42:39,567 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:42:39,567 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 22:42:39,568 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 22:42:39,576 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:42:39,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:42:39,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:42:39,596 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-10-26 22:42:43,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:42:43,791 INFO L93 Difference]: Finished difference Result 1054 states and 1900 transitions. [2018-10-26 22:42:43,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:42:43,795 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2018-10-26 22:42:43,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:42:43,824 INFO L225 Difference]: With dead ends: 1054 [2018-10-26 22:42:43,824 INFO L226 Difference]: Without dead ends: 736 [2018-10-26 22:42:43,833 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:42:43,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2018-10-26 22:42:43,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 526. [2018-10-26 22:42:43,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2018-10-26 22:42:43,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 886 transitions. [2018-10-26 22:42:43,927 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 886 transitions. Word has length 155 [2018-10-26 22:42:43,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:42:43,928 INFO L481 AbstractCegarLoop]: Abstraction has 526 states and 886 transitions. [2018-10-26 22:42:43,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:42:43,928 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 886 transitions. [2018-10-26 22:42:43,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-10-26 22:42:43,936 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:42:43,936 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 22:42:43,936 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:42:43,937 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:42:43,937 INFO L82 PathProgramCache]: Analyzing trace with hash -211363835, now seen corresponding path program 1 times [2018-10-26 22:42:43,937 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 22:42:43,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:42:43,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:42:43,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:42:43,939 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 22:42:43,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:42:44,252 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-26 22:42:44,366 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:42:44,366 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:42:44,367 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 22:42:44,367 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 22:42:44,369 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 22:42:44,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 22:42:44,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 22:42:44,370 INFO L87 Difference]: Start difference. First operand 526 states and 886 transitions. Second operand 6 states. [2018-10-26 22:42:47,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:42:47,553 INFO L93 Difference]: Finished difference Result 1588 states and 2744 transitions. [2018-10-26 22:42:47,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 22:42:47,556 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2018-10-26 22:42:47,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:42:47,570 INFO L225 Difference]: With dead ends: 1588 [2018-10-26 22:42:47,570 INFO L226 Difference]: Without dead ends: 1068 [2018-10-26 22:42:47,575 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 [2018-10-26 22:42:47,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2018-10-26 22:42:47,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 1025. [2018-10-26 22:42:47,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1025 states. [2018-10-26 22:42:47,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1721 transitions. [2018-10-26 22:42:47,663 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1721 transitions. Word has length 165 [2018-10-26 22:42:47,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:42:47,663 INFO L481 AbstractCegarLoop]: Abstraction has 1025 states and 1721 transitions. [2018-10-26 22:42:47,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 22:42:47,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1721 transitions. [2018-10-26 22:42:47,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-26 22:42:47,671 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:42:47,671 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:42:47,672 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:42:47,672 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:42:47,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1423519688, now seen corresponding path program 1 times [2018-10-26 22:42:47,672 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 22:42:47,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:42:47,674 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:42:47,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:42:47,674 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 22:42:47,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:42:47,978 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:42:47,979 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:42:47,979 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:42:47,979 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 22:42:47,980 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 22:42:47,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 22:42:47,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 22:42:47,981 INFO L87 Difference]: Start difference. First operand 1025 states and 1721 transitions. Second operand 3 states. [2018-10-26 22:42:51,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:42:51,270 INFO L93 Difference]: Finished difference Result 2908 states and 5067 transitions. [2018-10-26 22:42:51,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 22:42:51,272 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2018-10-26 22:42:51,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:42:51,290 INFO L225 Difference]: With dead ends: 2908 [2018-10-26 22:42:51,291 INFO L226 Difference]: Without dead ends: 1889 [2018-10-26 22:42:51,301 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 22:42:51,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2018-10-26 22:42:51,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1869. [2018-10-26 22:42:51,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1869 states. [2018-10-26 22:42:51,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1869 states to 1869 states and 3142 transitions. [2018-10-26 22:42:51,390 INFO L78 Accepts]: Start accepts. Automaton has 1869 states and 3142 transitions. Word has length 168 [2018-10-26 22:42:51,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:42:51,390 INFO L481 AbstractCegarLoop]: Abstraction has 1869 states and 3142 transitions. [2018-10-26 22:42:51,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 22:42:51,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1869 states and 3142 transitions. [2018-10-26 22:42:51,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-10-26 22:42:51,398 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:42:51,398 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:42:51,399 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:42:51,399 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:42:51,399 INFO L82 PathProgramCache]: Analyzing trace with hash 634374037, now seen corresponding path program 1 times [2018-10-26 22:42:51,399 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 22:42:51,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:42:51,400 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:42:51,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:42:51,402 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 22:42:51,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:42:51,679 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-26 22:42:51,730 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:42:51,730 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:42:51,731 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 22:42:51,731 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 22:42:51,732 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 22:42:51,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 22:42:51,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 22:42:51,733 INFO L87 Difference]: Start difference. First operand 1869 states and 3142 transitions. Second operand 6 states. [2018-10-26 22:42:55,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:42:55,090 INFO L93 Difference]: Finished difference Result 5741 states and 10710 transitions. [2018-10-26 22:42:55,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 22:42:55,091 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 173 [2018-10-26 22:42:55,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:42:55,130 INFO L225 Difference]: With dead ends: 5741 [2018-10-26 22:42:55,130 INFO L226 Difference]: Without dead ends: 3878 [2018-10-26 22:42:55,140 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 [2018-10-26 22:42:55,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3878 states. [2018-10-26 22:42:55,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3878 to 3764. [2018-10-26 22:42:55,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3764 states. [2018-10-26 22:42:55,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3764 states to 3764 states and 6536 transitions. [2018-10-26 22:42:55,306 INFO L78 Accepts]: Start accepts. Automaton has 3764 states and 6536 transitions. Word has length 173 [2018-10-26 22:42:55,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:42:55,307 INFO L481 AbstractCegarLoop]: Abstraction has 3764 states and 6536 transitions. [2018-10-26 22:42:55,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 22:42:55,307 INFO L276 IsEmpty]: Start isEmpty. Operand 3764 states and 6536 transitions. [2018-10-26 22:42:55,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-26 22:42:55,320 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:42:55,321 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:42:55,321 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:42:55,321 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:42:55,321 INFO L82 PathProgramCache]: Analyzing trace with hash 279397812, now seen corresponding path program 1 times [2018-10-26 22:42:55,321 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 22:42:55,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:42:55,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:42:55,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:42:55,323 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 22:42:55,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:42:55,643 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:42:55,643 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:42:55,643 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-26 22:42:55,643 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 22:42:55,644 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 22:42:55,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 22:42:55,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-26 22:42:55,645 INFO L87 Difference]: Start difference. First operand 3764 states and 6536 transitions. Second operand 7 states. [2018-10-26 22:42:57,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:42:57,602 INFO L93 Difference]: Finished difference Result 11468 states and 22298 transitions. [2018-10-26 22:42:57,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 22:42:57,609 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 174 [2018-10-26 22:42:57,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:42:57,672 INFO L225 Difference]: With dead ends: 11468 [2018-10-26 22:42:57,673 INFO L226 Difference]: Without dead ends: 7710 [2018-10-26 22:42:57,693 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-10-26 22:42:57,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7710 states. [2018-10-26 22:42:58,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7710 to 7523. [2018-10-26 22:42:58,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7523 states. [2018-10-26 22:42:58,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7523 states to 7523 states and 13613 transitions. [2018-10-26 22:42:58,030 INFO L78 Accepts]: Start accepts. Automaton has 7523 states and 13613 transitions. Word has length 174 [2018-10-26 22:42:58,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:42:58,031 INFO L481 AbstractCegarLoop]: Abstraction has 7523 states and 13613 transitions. [2018-10-26 22:42:58,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 22:42:58,031 INFO L276 IsEmpty]: Start isEmpty. Operand 7523 states and 13613 transitions. [2018-10-26 22:42:58,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-10-26 22:42:58,058 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:42:58,058 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 22:42:58,058 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:42:58,059 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:42:58,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1038337502, now seen corresponding path program 1 times [2018-10-26 22:42:58,059 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 22:42:58,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:42:58,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:42:58,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:42:58,063 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 22:42:58,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:42:58,295 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-26 22:42:58,327 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:42:58,327 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:42:58,327 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 22:42:58,327 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 22:42:58,328 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 22:42:58,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 22:42:58,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 22:42:58,329 INFO L87 Difference]: Start difference. First operand 7523 states and 13613 transitions. Second operand 6 states. [2018-10-26 22:43:01,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:43:01,444 INFO L93 Difference]: Finished difference Result 23479 states and 46249 transitions. [2018-10-26 22:43:01,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 22:43:01,447 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 180 [2018-10-26 22:43:01,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:43:01,578 INFO L225 Difference]: With dead ends: 23479 [2018-10-26 22:43:01,578 INFO L226 Difference]: Without dead ends: 15962 [2018-10-26 22:43:01,628 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 [2018-10-26 22:43:01,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15962 states. [2018-10-26 22:43:02,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15962 to 15714. [2018-10-26 22:43:02,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15714 states. [2018-10-26 22:43:02,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15714 states to 15714 states and 27871 transitions. [2018-10-26 22:43:02,207 INFO L78 Accepts]: Start accepts. Automaton has 15714 states and 27871 transitions. Word has length 180 [2018-10-26 22:43:02,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:43:02,207 INFO L481 AbstractCegarLoop]: Abstraction has 15714 states and 27871 transitions. [2018-10-26 22:43:02,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 22:43:02,208 INFO L276 IsEmpty]: Start isEmpty. Operand 15714 states and 27871 transitions. [2018-10-26 22:43:02,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-26 22:43:02,259 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:43:02,259 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2018-10-26 22:43:02,260 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:43:02,260 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:43:02,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1657030729, now seen corresponding path program 1 times [2018-10-26 22:43:02,260 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 22:43:02,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:43:02,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:43:02,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:43:02,262 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 22:43:02,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:43:02,509 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-26 22:43:02,846 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-26 22:43:03,048 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-26 22:43:03,197 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-26 22:43:03,197 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:43:03,198 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 22:43:03,199 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 183 with the following transitions: [2018-10-26 22:43:03,204 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [16], [17], [21], [25], [29], [33], [37], [41], [44], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [701], [703], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-26 22:43:03,339 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 22:43:03,340 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-10-26 22:47:00,367 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-26 22:47:00,368 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-26 22:47:00,369 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-26 22:47:00,369 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:47:00,370 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 22:47:00,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:47:00,379 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-26 22:47:00,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:47:00,581 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:47:00,616 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-26 22:47:00,818 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 22:47:00,818 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 22:47:00,823 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 22:47:00,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 10:47:00 BoogieIcfgContainer [2018-10-26 22:47:00,824 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 22:47:00,824 INFO L168 Benchmark]: Toolchain (without parser) took 269148.73 ms. Allocated memory was 1.5 GB in the beginning and 3.1 GB in the end (delta: 1.6 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -665.6 MB). Peak memory consumption was 901.0 MB. Max. memory is 7.1 GB. [2018-10-26 22:47:00,826 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. [2018-10-26 22:47:00,826 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1234.51 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-26 22:47:00,827 INFO L168 Benchmark]: Boogie Procedure Inliner took 311.98 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -875.7 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2018-10-26 22:47:00,828 INFO L168 Benchmark]: Boogie Preprocessor took 127.28 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2018-10-26 22:47:00,829 INFO L168 Benchmark]: RCFGBuilder took 4748.71 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 270.5 MB). Peak memory consumption was 270.5 MB. Max. memory is 7.1 GB. [2018-10-26 22:47:00,830 INFO L168 Benchmark]: TraceAbstraction took 262721.44 ms. Allocated memory was 2.3 GB in the beginning and 3.1 GB in the end (delta: 816.8 MB). Free memory was 1.9 GB in the beginning and 2.1 GB in the end (delta: -158.5 MB). Peak memory consumption was 658.3 MB. Max. memory is 7.1 GB. [2018-10-26 22:47:00,839 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 1234.51 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 311.98 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -875.7 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.28 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4748.71 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 270.5 MB). Peak memory consumption was 270.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 262721.44 ms. Allocated memory was 2.3 GB in the beginning and 3.1 GB in the end (delta: 816.8 MB). Free memory was 1.9 GB in the beginning and 2.1 GB in the end (delta: -158.5 MB). Peak memory consumption was 658.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1479]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1479). Cancelled while BasicCegarLoop was analyzing trace of length 183 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 7 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 262.6s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 19.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1017 SDtfs, 5264 SDslu, 1178 SDs, 0 SdLazy, 7679 SolverSat, 1051 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 14 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15714occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 237.1s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 6 MinimizatonAttempts, 822 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 1015 NumberOfCodeBlocks, 1015 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1009 ConstructedInterpolants, 0 QuantifiedInterpolants, 476891 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 68/68 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown