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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label43_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 02:06:49,310 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 02:06:49,312 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 02:06:49,324 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 02:06:49,324 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 02:06:49,326 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 02:06:49,327 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 02:06:49,329 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 02:06:49,331 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 02:06:49,332 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 02:06:49,332 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 02:06:49,333 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 02:06:49,334 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 02:06:49,335 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 02:06:49,336 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 02:06:49,337 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 02:06:49,338 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 02:06:49,340 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 02:06:49,342 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 02:06:49,343 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 02:06:49,345 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 02:06:49,346 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 02:06:49,349 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-25 02:06:49,358 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-25 02:06:49,374 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 02:06:49,374 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 02:06:49,375 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 02:06:49,375 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 02:06:49,376 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 02:06:49,376 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 02:06:49,376 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 02:06:49,376 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 02:06:49,376 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 02:06:49,376 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 02:06:49,377 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 02:06:49,377 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 02:06:49,377 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 02:06:49,377 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 02:06:49,378 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 02:06:49,378 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 02:06:49,378 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 02:06:49,378 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 02:06:49,379 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 02:06:49,379 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 02:06:49,379 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 02:06:49,379 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 02:06:49,379 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 02:06:49,380 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 02:06:49,380 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 02:06:49,380 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 02:06:49,380 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 02:06:49,380 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 02:06:49,381 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 02:06:49,381 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 02:06:49,381 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 02:06:49,381 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 02:06:49,381 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 02:06:49,382 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 02:06:49,382 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 02:06:49,382 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 02:06:49,426 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 02:06:49,446 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 02:06:49,451 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 02:06:49,452 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 02:06:49,453 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 02:06:49,453 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label43_true-unreach-call.c [2018-10-25 02:06:49,525 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a4a081064/290ebe6318ec42588ee78f4f5eca6122/FLAGb98c8a10d [2018-10-25 02:06:50,322 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 02:06:50,323 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label43_true-unreach-call.c [2018-10-25 02:06:50,347 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a4a081064/290ebe6318ec42588ee78f4f5eca6122/FLAGb98c8a10d [2018-10-25 02:06:50,363 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a4a081064/290ebe6318ec42588ee78f4f5eca6122 [2018-10-25 02:06:50,375 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 02:06:50,377 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 02:06:50,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 02:06:50,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 02:06:50,382 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 02:06:50,383 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 02:06:50" (1/1) ... [2018-10-25 02:06:50,387 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b4aab1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:06:50, skipping insertion in model container [2018-10-25 02:06:50,387 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 02:06:50" (1/1) ... [2018-10-25 02:06:50,399 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 02:06:50,543 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 02:06:51,698 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 02:06:51,703 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 02:06:52,149 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 02:06:52,181 INFO L193 MainTranslator]: Completed translation [2018-10-25 02:06:52,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:06:52 WrapperNode [2018-10-25 02:06:52,182 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 02:06:52,183 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 02:06:52,183 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 02:06:52,184 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 02:06:52,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:06:52" (1/1) ... [2018-10-25 02:06:52,268 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:06:52" (1/1) ... [2018-10-25 02:06:52,671 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 02:06:52,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 02:06:52,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 02:06:52,672 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 02:06:52,687 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:06:52" (1/1) ... [2018-10-25 02:06:52,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:06:52" (1/1) ... [2018-10-25 02:06:52,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:06:52" (1/1) ... [2018-10-25 02:06:52,711 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:06:52" (1/1) ... [2018-10-25 02:06:52,814 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:06:52" (1/1) ... [2018-10-25 02:06:52,858 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:06:52" (1/1) ... [2018-10-25 02:06:52,886 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:06:52" (1/1) ... [2018-10-25 02:06:52,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 02:06:52,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 02:06:52,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 02:06:52,931 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 02:06:52,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:06:52" (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 [2018-10-25 02:06:53,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 02:06:53,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 02:06:53,016 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-25 02:06:53,016 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-25 02:06:53,016 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-25 02:06:53,016 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-25 02:06:53,016 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 02:06:53,017 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 02:06:53,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 02:06:53,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 02:06:53,017 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 02:06:53,018 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 02:07:02,751 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 02:07:02,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 02:07:02 BoogieIcfgContainer [2018-10-25 02:07:02,753 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 02:07:02,754 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 02:07:02,754 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 02:07:02,758 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 02:07:02,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 02:06:50" (1/3) ... [2018-10-25 02:07:02,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3388c74f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 02:07:02, skipping insertion in model container [2018-10-25 02:07:02,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:06:52" (2/3) ... [2018-10-25 02:07:02,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3388c74f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 02:07:02, skipping insertion in model container [2018-10-25 02:07:02,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 02:07:02" (3/3) ... [2018-10-25 02:07:02,761 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label43_true-unreach-call.c [2018-10-25 02:07:02,771 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 02:07:02,781 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 02:07:02,799 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 02:07:02,844 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 02:07:02,845 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 02:07:02,845 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 02:07:02,845 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 02:07:02,845 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 02:07:02,846 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 02:07:02,846 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 02:07:02,846 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 02:07:02,887 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-25 02:07:02,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-10-25 02:07:02,901 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:07:02,902 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] [2018-10-25 02:07:02,907 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:07:02,914 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:07:02,915 INFO L82 PathProgramCache]: Analyzing trace with hash 2013780399, now seen corresponding path program 1 times [2018-10-25 02:07:02,917 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:07:02,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:07:02,967 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:07:02,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:07:02,968 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:07:03,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:07:03,483 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 02:07:03,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:07:03,677 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:07:03,677 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 02:07:03,677 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:07:03,686 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 02:07:03,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 02:07:03,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 02:07:03,705 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-10-25 02:07:10,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:07:10,442 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-10-25 02:07:10,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 02:07:10,444 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2018-10-25 02:07:10,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:07:10,477 INFO L225 Difference]: With dead ends: 2251 [2018-10-25 02:07:10,477 INFO L226 Difference]: Without dead ends: 1474 [2018-10-25 02:07:10,490 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 02:07:10,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-10-25 02:07:10,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-10-25 02:07:10,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-25 02:07:10,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2721 transitions. [2018-10-25 02:07:10,632 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2721 transitions. Word has length 73 [2018-10-25 02:07:10,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:07:10,633 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2721 transitions. [2018-10-25 02:07:10,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 02:07:10,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2721 transitions. [2018-10-25 02:07:10,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-25 02:07:10,644 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:07:10,644 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 02:07:10,644 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:07:10,645 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:07:10,645 INFO L82 PathProgramCache]: Analyzing trace with hash -928614391, now seen corresponding path program 1 times [2018-10-25 02:07:10,645 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:07:10,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:07:10,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:07:10,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:07:10,647 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:07:10,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:07:10,942 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:07:10,943 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:07:10,943 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 02:07:10,943 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:07:10,946 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 02:07:10,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 02:07:10,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 02:07:10,949 INFO L87 Difference]: Start difference. First operand 1474 states and 2721 transitions. Second operand 6 states. [2018-10-25 02:07:20,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:07:20,880 INFO L93 Difference]: Finished difference Result 4419 states and 8244 transitions. [2018-10-25 02:07:20,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 02:07:20,881 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 162 [2018-10-25 02:07:20,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:07:20,905 INFO L225 Difference]: With dead ends: 4419 [2018-10-25 02:07:20,906 INFO L226 Difference]: Without dead ends: 2951 [2018-10-25 02:07:20,911 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 [2018-10-25 02:07:20,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-10-25 02:07:21,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2928. [2018-10-25 02:07:21,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2928 states. [2018-10-25 02:07:21,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 5087 transitions. [2018-10-25 02:07:21,038 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 5087 transitions. Word has length 162 [2018-10-25 02:07:21,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:07:21,038 INFO L481 AbstractCegarLoop]: Abstraction has 2928 states and 5087 transitions. [2018-10-25 02:07:21,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 02:07:21,039 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 5087 transitions. [2018-10-25 02:07:21,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-10-25 02:07:21,047 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:07:21,048 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 02:07:21,048 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:07:21,048 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:07:21,048 INFO L82 PathProgramCache]: Analyzing trace with hash 2132673540, now seen corresponding path program 1 times [2018-10-25 02:07:21,049 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:07:21,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:07:21,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:07:21,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:07:21,050 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:07:21,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:07:21,419 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:07:21,419 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:07:21,419 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 02:07:21,419 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:07:21,420 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 02:07:21,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 02:07:21,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 02:07:21,421 INFO L87 Difference]: Start difference. First operand 2928 states and 5087 transitions. Second operand 6 states. [2018-10-25 02:07:27,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:07:27,250 INFO L93 Difference]: Finished difference Result 6669 states and 11522 transitions. [2018-10-25 02:07:27,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 02:07:27,252 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 209 [2018-10-25 02:07:27,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:07:27,277 INFO L225 Difference]: With dead ends: 6669 [2018-10-25 02:07:27,277 INFO L226 Difference]: Without dead ends: 3747 [2018-10-25 02:07:27,286 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 [2018-10-25 02:07:27,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3747 states. [2018-10-25 02:07:27,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3747 to 3689. [2018-10-25 02:07:27,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3689 states. [2018-10-25 02:07:27,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3689 states to 3689 states and 5891 transitions. [2018-10-25 02:07:27,399 INFO L78 Accepts]: Start accepts. Automaton has 3689 states and 5891 transitions. Word has length 209 [2018-10-25 02:07:27,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:07:27,400 INFO L481 AbstractCegarLoop]: Abstraction has 3689 states and 5891 transitions. [2018-10-25 02:07:27,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 02:07:27,400 INFO L276 IsEmpty]: Start isEmpty. Operand 3689 states and 5891 transitions. [2018-10-25 02:07:27,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-10-25 02:07:27,407 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:07:27,407 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 02:07:27,407 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:07:27,408 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:07:27,408 INFO L82 PathProgramCache]: Analyzing trace with hash 2039872936, now seen corresponding path program 1 times [2018-10-25 02:07:27,408 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:07:27,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:07:27,409 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:07:27,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:07:27,409 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:07:27,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:07:27,753 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:07:27,754 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:07:27,754 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 02:07:27,754 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:07:27,755 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 02:07:27,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 02:07:27,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 02:07:27,755 INFO L87 Difference]: Start difference. First operand 3689 states and 5891 transitions. Second operand 6 states. [2018-10-25 02:07:32,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:07:32,778 INFO L93 Difference]: Finished difference Result 9623 states and 15373 transitions. [2018-10-25 02:07:32,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 02:07:32,779 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 211 [2018-10-25 02:07:32,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:07:32,809 INFO L225 Difference]: With dead ends: 9623 [2018-10-25 02:07:32,810 INFO L226 Difference]: Without dead ends: 5940 [2018-10-25 02:07:32,821 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 [2018-10-25 02:07:32,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5940 states. [2018-10-25 02:07:32,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5940 to 5889. [2018-10-25 02:07:32,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5889 states. [2018-10-25 02:07:32,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5889 states to 5889 states and 8064 transitions. [2018-10-25 02:07:32,963 INFO L78 Accepts]: Start accepts. Automaton has 5889 states and 8064 transitions. Word has length 211 [2018-10-25 02:07:32,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:07:32,963 INFO L481 AbstractCegarLoop]: Abstraction has 5889 states and 8064 transitions. [2018-10-25 02:07:32,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 02:07:32,964 INFO L276 IsEmpty]: Start isEmpty. Operand 5889 states and 8064 transitions. [2018-10-25 02:07:32,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2018-10-25 02:07:32,970 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:07:32,970 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:07:32,971 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:07:32,971 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:07:32,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1691415403, now seen corresponding path program 1 times [2018-10-25 02:07:32,971 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:07:32,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:07:32,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:07:32,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:07:32,973 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:07:33,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:07:33,294 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-10-25 02:07:33,294 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:07:33,295 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 02:07:33,295 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:07:33,295 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 02:07:33,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 02:07:33,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 02:07:33,296 INFO L87 Difference]: Start difference. First operand 5889 states and 8064 transitions. Second operand 4 states. [2018-10-25 02:07:41,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:07:41,995 INFO L93 Difference]: Finished difference Result 23211 states and 32875 transitions. [2018-10-25 02:07:41,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 02:07:41,997 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 269 [2018-10-25 02:07:41,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:07:42,081 INFO L225 Difference]: With dead ends: 23211 [2018-10-25 02:07:42,081 INFO L226 Difference]: Without dead ends: 17328 [2018-10-25 02:07:42,115 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 02:07:42,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17328 states. [2018-10-25 02:07:42,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17328 to 17328. [2018-10-25 02:07:42,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17328 states. [2018-10-25 02:07:42,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17328 states to 17328 states and 23091 transitions. [2018-10-25 02:07:42,483 INFO L78 Accepts]: Start accepts. Automaton has 17328 states and 23091 transitions. Word has length 269 [2018-10-25 02:07:42,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:07:42,484 INFO L481 AbstractCegarLoop]: Abstraction has 17328 states and 23091 transitions. [2018-10-25 02:07:42,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 02:07:42,484 INFO L276 IsEmpty]: Start isEmpty. Operand 17328 states and 23091 transitions. [2018-10-25 02:07:42,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2018-10-25 02:07:42,527 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:07:42,528 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:07:42,528 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:07:42,528 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:07:42,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1084028798, now seen corresponding path program 1 times [2018-10-25 02:07:42,529 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:07:42,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:07:42,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:07:42,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:07:42,530 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:07:42,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:07:43,134 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 253 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:07:43,134 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:07:43,134 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 02:07:43,136 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 475 with the following transitions: [2018-10-25 02:07:43,138 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2055], [2063], [2071], [2079], [2087], [2095], [2103], [2107], [2109], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2328], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2948], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-25 02:07:43,210 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 02:07:43,211 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 02:07:44,008 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 02:07:44,010 INFO L272 AbstractInterpreter]: Visited 283 different actions 283 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-25 02:07:44,053 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:07:44,053 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 02:07:44,836 INFO L232 lantSequenceWeakener]: Weakened 465 states. On average, predicates are now at 77.83% of their original sizes. [2018-10-25 02:07:44,836 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 02:07:45,079 INFO L413 sIntCurrentIteration]: We have 473 unified AI predicates [2018-10-25 02:07:45,079 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 02:07:45,080 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 02:07:45,080 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-25 02:07:45,080 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:07:45,081 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 02:07:45,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 02:07:45,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 02:07:45,082 INFO L87 Difference]: Start difference. First operand 17328 states and 23091 transitions. Second operand 6 states. [2018-10-25 02:07:48,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 02:07:48,571 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.ArithmeticException: BigInteger: modulus not positive at java.math.BigInteger.mod(BigInteger.java:2458) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.explicit.ExplicitValueValue.modulo(ExplicitValueValue.java:154) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.explicit.ExplicitValueValue.modulo(ExplicitValueValue.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:125) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:100) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:92) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:92) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:92) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.ConditionalEvaluator.evaluate(ConditionalEvaluator.java:78) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.ConditionalEvaluator.evaluate(ConditionalEvaluator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:92) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:92) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:92) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:92) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.ConditionalEvaluator.evaluate(ConditionalEvaluator.java:78) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.ConditionalEvaluator.evaluate(ConditionalEvaluator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.evaluator.BinaryExpressionEvaluator.evaluate(BinaryExpressionEvaluator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.handleAssumeStatement(NonrelationalStatementProcessor.java:363) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.processStatement(NonrelationalStatementProcessor.java:160) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:142) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:128) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:362) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:353) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:125) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.applyInternally(CompoundDomainPostOperator.java:306) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:131) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.applyPost(TermConjunctEvaluator.java:305) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.lambda$4(TermConjunctEvaluator.java:178) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.computeFixpoint(TermConjunctEvaluator.java:198) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.lambda$1(TermConjunctEvaluator.java:150) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.computePost(TermConjunctEvaluator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormanCachedPostOperation.applyPost(PoormanCachedPostOperation.java:308) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.applyPost(PoormansAbstractPostOperator.java:217) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:119) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.lambda$17(DisjunctiveAbstractState.java:369) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.mapCollection(DisjunctiveAbstractState.java:537) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.apply(DisjunctiveAbstractState.java:369) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.AbsIntHoareTripleChecker.checkInternalTransitionWithValidState(AbsIntHoareTripleChecker.java:352) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.AbsIntHoareTripleChecker.checkInternalAbsInt(AbsIntHoareTripleChecker.java:249) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.AbsIntHoareTripleChecker.checkInternal(AbsIntHoareTripleChecker.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:359) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.chooseFalseSuccessor2(BasicAbstractInterpolantAutomaton.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:72) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:234) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1066) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:968) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:188) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:673) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:602) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:473) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-10-25 02:07:48,581 INFO L168 Benchmark]: Toolchain (without parser) took 58205.77 ms. Allocated memory was 1.5 GB in the beginning and 3.0 GB in the end (delta: 1.5 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 72.3 MB. Max. memory is 7.1 GB. [2018-10-25 02:07:48,584 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-25 02:07:48,584 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1804.56 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-25 02:07:48,588 INFO L168 Benchmark]: Boogie Procedure Inliner took 488.19 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 748.7 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -930.7 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. [2018-10-25 02:07:48,589 INFO L168 Benchmark]: Boogie Preprocessor took 258.86 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 29.6 MB). Peak memory consumption was 29.6 MB. Max. memory is 7.1 GB. [2018-10-25 02:07:48,591 INFO L168 Benchmark]: RCFGBuilder took 9821.96 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 501.2 MB). Peak memory consumption was 501.2 MB. Max. memory is 7.1 GB. [2018-10-25 02:07:48,592 INFO L168 Benchmark]: TraceAbstraction took 45826.42 ms. Allocated memory was 2.3 GB in the beginning and 3.0 GB in the end (delta: 739.2 MB). Free memory was 1.6 GB in the beginning and 2.8 GB in the end (delta: -1.2 GB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-25 02:07:48,604 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1804.56 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 488.19 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 748.7 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -930.7 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 258.86 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 29.6 MB). Peak memory consumption was 29.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9821.96 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 501.2 MB). Peak memory consumption was 501.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 45826.42 ms. Allocated memory was 2.3 GB in the beginning and 3.0 GB in the end (delta: 739.2 MB). Free memory was 1.6 GB in the beginning and 2.8 GB in the end (delta: -1.2 GB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: ArithmeticException: BigInteger: modulus not positive de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: ArithmeticException: BigInteger: modulus not positive: java.math.BigInteger.mod(BigInteger.java:2458) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...