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-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label35_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 10:21:58,941 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 10:21:58,944 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 10:21:58,956 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 10:21:58,956 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 10:21:58,957 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 10:21:58,959 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 10:21:58,960 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 10:21:58,962 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 10:21:58,963 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 10:21:58,964 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 10:21:58,964 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 10:21:58,965 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 10:21:58,966 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 10:21:58,967 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 10:21:58,968 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 10:21:58,969 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 10:21:58,971 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 10:21:58,973 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 10:21:58,974 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 10:21:58,976 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 10:21:58,977 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 10:21:58,979 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-27 10:21:58,991 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 10:21:59,006 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 10:21:59,007 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 10:21:59,008 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 10:21:59,008 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 10:21:59,008 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 10:21:59,008 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 10:21:59,008 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 10:21:59,009 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 10:21:59,009 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 10:21:59,009 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 10:21:59,009 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 10:21:59,009 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 10:21:59,010 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 10:21:59,010 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 10:21:59,010 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 10:21:59,011 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 10:21:59,011 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 10:21:59,011 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 10:21:59,011 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 10:21:59,011 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 10:21:59,012 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 10:21:59,012 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 10:21:59,012 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 10:21:59,012 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 10:21:59,012 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 10:21:59,013 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 10:21:59,013 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 10:21:59,013 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 10:21:59,013 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 10:21:59,013 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 10:21:59,013 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 10:21:59,014 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 10:21:59,014 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 10:21:59,014 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 10:21:59,059 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 10:21:59,074 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 10:21:59,080 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 10:21:59,081 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 10:21:59,082 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 10:21:59,082 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label35_false-unreach-call.c [2018-10-27 10:21:59,155 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ea2b2cbd8/5d489dc5fe0844eb8421121c3718686a/FLAGb1d7d567b [2018-10-27 10:21:59,924 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 10:21:59,925 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label35_false-unreach-call.c [2018-10-27 10:21:59,944 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ea2b2cbd8/5d489dc5fe0844eb8421121c3718686a/FLAGb1d7d567b [2018-10-27 10:21:59,960 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ea2b2cbd8/5d489dc5fe0844eb8421121c3718686a [2018-10-27 10:21:59,971 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 10:21:59,973 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 10:21:59,974 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 10:21:59,974 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 10:21:59,979 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 10:21:59,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:21:59" (1/1) ... [2018-10-27 10:21:59,983 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28b071f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:21:59, skipping insertion in model container [2018-10-27 10:21:59,983 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:21:59" (1/1) ... [2018-10-27 10:21:59,994 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 10:22:00,085 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 10:22:00,822 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 10:22:00,828 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 10:22:01,062 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 10:22:01,087 INFO L193 MainTranslator]: Completed translation [2018-10-27 10:22:01,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:22:01 WrapperNode [2018-10-27 10:22:01,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 10:22:01,096 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 10:22:01,096 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 10:22:01,096 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 10:22:01,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:22:01" (1/1) ... [2018-10-27 10:22:01,147 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:22:01" (1/1) ... [2018-10-27 10:22:01,413 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 10:22:01,414 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 10:22:01,414 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 10:22:01,414 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 10:22:01,425 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:22:01" (1/1) ... [2018-10-27 10:22:01,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:22:01" (1/1) ... [2018-10-27 10:22:01,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:22:01" (1/1) ... [2018-10-27 10:22:01,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:22:01" (1/1) ... [2018-10-27 10:22:01,496 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:22:01" (1/1) ... [2018-10-27 10:22:01,511 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:22:01" (1/1) ... [2018-10-27 10:22:01,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:22:01" (1/1) ... [2018-10-27 10:22:01,535 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 10:22:01,535 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 10:22:01,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 10:22:01,536 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 10:22:01,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:22:01" (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 [2018-10-27 10:22:01,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 10:22:01,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 10:22:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 10:22:01,607 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 10:22:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 10:22:01,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 10:22:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 10:22:01,607 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 10:22:06,611 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 10:22:06,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:22:06 BoogieIcfgContainer [2018-10-27 10:22:06,612 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 10:22:06,613 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 10:22:06,614 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 10:22:06,617 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 10:22:06,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 10:21:59" (1/3) ... [2018-10-27 10:22:06,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@642c7430 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:22:06, skipping insertion in model container [2018-10-27 10:22:06,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:22:01" (2/3) ... [2018-10-27 10:22:06,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@642c7430 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:22:06, skipping insertion in model container [2018-10-27 10:22:06,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:22:06" (3/3) ... [2018-10-27 10:22:06,622 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label35_false-unreach-call.c [2018-10-27 10:22:06,633 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 10:22:06,643 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 10:22:06,661 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 10:22:06,703 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 10:22:06,703 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 10:22:06,703 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 10:22:06,703 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 10:22:06,704 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 10:22:06,704 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 10:22:06,704 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 10:22:06,704 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 10:22:06,734 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-27 10:22:06,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-27 10:22:06,752 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 10:22:06,753 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] [2018-10-27 10:22:06,756 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 10:22:06,762 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 10:22:06,763 INFO L82 PathProgramCache]: Analyzing trace with hash 4278633, now seen corresponding path program 1 times [2018-10-27 10:22:06,766 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 10:22:06,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:22:06,819 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 10:22:06,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:22:06,820 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 10:22:07,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 10:22:07,689 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 4 [2018-10-27 10:22:07,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 10:22:07,881 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 10:22:07,881 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 10:22:07,881 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 10:22:07,887 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 10:22:07,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 10:22:07,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 10:22:07,904 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-10-27 10:22:11,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 10:22:11,651 INFO L93 Difference]: Finished difference Result 1077 states and 1927 transitions. [2018-10-27 10:22:11,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 10:22:11,654 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2018-10-27 10:22:11,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 10:22:11,681 INFO L225 Difference]: With dead ends: 1077 [2018-10-27 10:22:11,681 INFO L226 Difference]: Without dead ends: 759 [2018-10-27 10:22:11,690 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 10:22:11,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2018-10-27 10:22:11,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 519. [2018-10-27 10:22:11,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 519 states. [2018-10-27 10:22:11,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 918 transitions. [2018-10-27 10:22:11,796 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 918 transitions. Word has length 152 [2018-10-27 10:22:11,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 10:22:11,797 INFO L481 AbstractCegarLoop]: Abstraction has 519 states and 918 transitions. [2018-10-27 10:22:11,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 10:22:11,797 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 918 transitions. [2018-10-27 10:22:11,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-10-27 10:22:11,814 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 10:22:11,815 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 10:22:11,815 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 10:22:11,816 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 10:22:11,816 INFO L82 PathProgramCache]: Analyzing trace with hash 2112118956, now seen corresponding path program 1 times [2018-10-27 10:22:11,816 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 10:22:11,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:22:11,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 10:22:11,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:22:11,818 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 10:22:11,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 10:22:12,154 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 10:22:12,154 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 10:22:12,154 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 10:22:12,155 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 10:22:12,157 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 10:22:12,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 10:22:12,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 10:22:12,158 INFO L87 Difference]: Start difference. First operand 519 states and 918 transitions. Second operand 6 states. [2018-10-27 10:22:15,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 10:22:15,686 INFO L93 Difference]: Finished difference Result 1480 states and 2698 transitions. [2018-10-27 10:22:15,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 10:22:15,692 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 180 [2018-10-27 10:22:15,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 10:22:15,705 INFO L225 Difference]: With dead ends: 1480 [2018-10-27 10:22:15,705 INFO L226 Difference]: Without dead ends: 967 [2018-10-27 10:22:15,711 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 [2018-10-27 10:22:15,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2018-10-27 10:22:15,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 949. [2018-10-27 10:22:15,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 949 states. [2018-10-27 10:22:15,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1579 transitions. [2018-10-27 10:22:15,771 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1579 transitions. Word has length 180 [2018-10-27 10:22:15,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 10:22:15,771 INFO L481 AbstractCegarLoop]: Abstraction has 949 states and 1579 transitions. [2018-10-27 10:22:15,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 10:22:15,771 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1579 transitions. [2018-10-27 10:22:15,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-10-27 10:22:15,777 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 10:22:15,777 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 10:22:15,777 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 10:22:15,777 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 10:22:15,778 INFO L82 PathProgramCache]: Analyzing trace with hash -316440838, now seen corresponding path program 1 times [2018-10-27 10:22:15,778 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 10:22:15,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:22:15,779 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 10:22:15,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:22:15,779 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 10:22:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 10:22:16,041 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 10:22:16,042 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 10:22:16,042 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 10:22:16,042 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 10:22:16,043 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 10:22:16,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 10:22:16,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 10:22:16,044 INFO L87 Difference]: Start difference. First operand 949 states and 1579 transitions. Second operand 6 states. [2018-10-27 10:22:19,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 10:22:19,087 INFO L93 Difference]: Finished difference Result 2919 states and 5077 transitions. [2018-10-27 10:22:19,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 10:22:19,096 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 187 [2018-10-27 10:22:19,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 10:22:19,113 INFO L225 Difference]: With dead ends: 2919 [2018-10-27 10:22:19,114 INFO L226 Difference]: Without dead ends: 1976 [2018-10-27 10:22:19,121 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 [2018-10-27 10:22:19,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2018-10-27 10:22:19,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1933. [2018-10-27 10:22:19,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1933 states. [2018-10-27 10:22:19,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1933 states to 1933 states and 3125 transitions. [2018-10-27 10:22:19,220 INFO L78 Accepts]: Start accepts. Automaton has 1933 states and 3125 transitions. Word has length 187 [2018-10-27 10:22:19,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 10:22:19,221 INFO L481 AbstractCegarLoop]: Abstraction has 1933 states and 3125 transitions. [2018-10-27 10:22:19,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 10:22:19,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1933 states and 3125 transitions. [2018-10-27 10:22:19,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-27 10:22:19,230 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 10:22:19,230 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 10:22:19,230 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 10:22:19,231 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 10:22:19,231 INFO L82 PathProgramCache]: Analyzing trace with hash 712687713, now seen corresponding path program 1 times [2018-10-27 10:22:19,231 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 10:22:19,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:22:19,232 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 10:22:19,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:22:19,233 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 10:22:19,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 10:22:19,637 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 10:22:19,752 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 10:22:19,752 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 10:22:19,753 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 10:22:19,754 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 199 with the following transitions: [2018-10-27 10:22:19,756 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [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], [174], [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], [677], [679], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 10:22:19,817 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 10:22:19,818 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 10:22:21,065 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 10:22:21,067 INFO L272 AbstractInterpreter]: Visited 152 different actions 152 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-10-27 10:22:21,099 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 10:22:21,099 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 10:22:22,139 INFO L227 lantSequenceWeakener]: Weakened 192 states. On average, predicates are now at 69.71% of their original sizes. [2018-10-27 10:22:22,140 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 10:22:22,671 INFO L415 sIntCurrentIteration]: We unified 197 AI predicates to 197 [2018-10-27 10:22:22,672 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 10:22:22,673 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 10:22:22,673 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [7] total 21 [2018-10-27 10:22:22,673 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 10:22:22,674 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-27 10:22:22,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-27 10:22:22,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2018-10-27 10:22:22,675 INFO L87 Difference]: Start difference. First operand 1933 states and 3125 transitions. Second operand 16 states. [2018-10-27 10:22:46,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 10:22:46,225 INFO L93 Difference]: Finished difference Result 4070 states and 6541 transitions. [2018-10-27 10:22:46,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-27 10:22:46,226 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 198 [2018-10-27 10:22:46,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 10:22:46,237 INFO L225 Difference]: With dead ends: 4070 [2018-10-27 10:22:46,238 INFO L226 Difference]: Without dead ends: 2143 [2018-10-27 10:22:46,244 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 200 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2018-10-27 10:22:46,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2018-10-27 10:22:46,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2141. [2018-10-27 10:22:46,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2141 states. [2018-10-27 10:22:46,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2141 states to 2141 states and 3342 transitions. [2018-10-27 10:22:46,305 INFO L78 Accepts]: Start accepts. Automaton has 2141 states and 3342 transitions. Word has length 198 [2018-10-27 10:22:46,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 10:22:46,307 INFO L481 AbstractCegarLoop]: Abstraction has 2141 states and 3342 transitions. [2018-10-27 10:22:46,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-27 10:22:46,310 INFO L276 IsEmpty]: Start isEmpty. Operand 2141 states and 3342 transitions. [2018-10-27 10:22:46,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-10-27 10:22:46,318 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 10:22:46,318 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 10:22:46,319 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 10:22:46,319 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 10:22:46,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1109675044, now seen corresponding path program 1 times [2018-10-27 10:22:46,319 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 10:22:46,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:22:46,321 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 10:22:46,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:22:46,321 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 10:22:46,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 10:22:46,649 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 10:22:47,170 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 59 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 10:22:47,170 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 10:22:47,170 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 10:22:47,171 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 211 with the following transitions: [2018-10-27 10:22:47,171 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [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], [174], [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], [677], [679], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 10:22:47,180 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 10:22:47,181 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 10:22:48,916 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 10:22:48,916 INFO L272 AbstractInterpreter]: Visited 156 different actions 308 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-27 10:22:48,923 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 10:22:48,923 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 10:22:50,085 INFO L227 lantSequenceWeakener]: Weakened 55 states. On average, predicates are now at 71.12% of their original sizes. [2018-10-27 10:22:50,085 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 10:22:51,191 INFO L415 sIntCurrentIteration]: We unified 209 AI predicates to 209 [2018-10-27 10:22:51,191 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 10:22:51,192 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 10:22:51,192 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [9] total 30 [2018-10-27 10:22:51,192 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 10:22:51,193 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-27 10:22:51,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-27 10:22:51,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2018-10-27 10:22:51,194 INFO L87 Difference]: Start difference. First operand 2141 states and 3342 transitions. Second operand 23 states. [2018-10-27 10:23:23,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 10:23:23,522 INFO L93 Difference]: Finished difference Result 4699 states and 7279 transitions. [2018-10-27 10:23:23,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-27 10:23:23,523 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 210 [2018-10-27 10:23:23,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 10:23:23,536 INFO L225 Difference]: With dead ends: 4699 [2018-10-27 10:23:23,536 INFO L226 Difference]: Without dead ends: 2772 [2018-10-27 10:23:23,543 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 218 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=220, Invalid=772, Unknown=0, NotChecked=0, Total=992 [2018-10-27 10:23:23,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2772 states. [2018-10-27 10:23:23,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2772 to 2769. [2018-10-27 10:23:23,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2769 states. [2018-10-27 10:23:23,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2769 states to 2769 states and 4018 transitions. [2018-10-27 10:23:23,621 INFO L78 Accepts]: Start accepts. Automaton has 2769 states and 4018 transitions. Word has length 210 [2018-10-27 10:23:23,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 10:23:23,622 INFO L481 AbstractCegarLoop]: Abstraction has 2769 states and 4018 transitions. [2018-10-27 10:23:23,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-27 10:23:23,622 INFO L276 IsEmpty]: Start isEmpty. Operand 2769 states and 4018 transitions. [2018-10-27 10:23:23,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-10-27 10:23:23,630 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 10:23:23,631 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 10:23:23,631 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 10:23:23,631 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 10:23:23,632 INFO L82 PathProgramCache]: Analyzing trace with hash 121375792, now seen corresponding path program 1 times [2018-10-27 10:23:23,632 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 10:23:23,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:23:23,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 10:23:23,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:23:23,633 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 10:23:23,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 10:23:23,993 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 82 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 10:23:23,993 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 10:23:23,993 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 10:23:23,994 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 221 with the following transitions: [2018-10-27 10:23:23,994 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [174], [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], [677], [679], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 10:23:24,001 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 10:23:24,001 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 10:23:24,861 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 10:23:24,861 INFO L272 AbstractInterpreter]: Visited 157 different actions 306 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-27 10:23:24,869 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 10:23:24,870 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 10:23:24,870 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 10:23:24,870 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 [2018-10-27 10:23:24,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 10:23:24,881 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 10:23:25,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 10:23:25,087 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 10:23:25,305 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-27 10:23:25,306 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 10:23:25,806 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-27 10:23:25,841 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-27 10:23:25,842 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-10-27 10:23:25,842 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 10:23:25,843 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 10:23:25,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 10:23:25,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-27 10:23:25,843 INFO L87 Difference]: Start difference. First operand 2769 states and 4018 transitions. Second operand 3 states. [2018-10-27 10:23:28,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 10:23:28,673 INFO L93 Difference]: Finished difference Result 7177 states and 11073 transitions. [2018-10-27 10:23:28,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 10:23:28,674 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 220 [2018-10-27 10:23:28,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 10:23:28,699 INFO L225 Difference]: With dead ends: 7177 [2018-10-27 10:23:28,699 INFO L226 Difference]: Without dead ends: 4831 [2018-10-27 10:23:28,711 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 438 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-27 10:23:28,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4831 states. [2018-10-27 10:23:28,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4831 to 4817. [2018-10-27 10:23:28,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4817 states. [2018-10-27 10:23:28,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4817 states to 4817 states and 7126 transitions. [2018-10-27 10:23:28,850 INFO L78 Accepts]: Start accepts. Automaton has 4817 states and 7126 transitions. Word has length 220 [2018-10-27 10:23:28,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 10:23:28,851 INFO L481 AbstractCegarLoop]: Abstraction has 4817 states and 7126 transitions. [2018-10-27 10:23:28,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 10:23:28,852 INFO L276 IsEmpty]: Start isEmpty. Operand 4817 states and 7126 transitions. [2018-10-27 10:23:28,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-10-27 10:23:28,867 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 10:23:28,868 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 10:23:28,868 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 10:23:28,868 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 10:23:28,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1701062905, now seen corresponding path program 1 times [2018-10-27 10:23:28,869 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 10:23:28,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:23:28,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 10:23:28,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:23:28,870 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 10:23:28,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 10:23:29,133 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 112 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-27 10:23:29,133 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 10:23:29,133 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 10:23:29,133 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 253 with the following transitions: [2018-10-27 10:23:29,134 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [68], [71], [75], [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], [194], [197], [201], [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], [677], [679], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 10:23:29,144 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 10:23:29,145 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 10:23:30,668 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 10:23:30,668 INFO L272 AbstractInterpreter]: Visited 158 different actions 308 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-27 10:23:30,693 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 10:23:30,694 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 10:23:30,694 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 10:23:30,694 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 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 10:23:30,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 10:23:30,711 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 10:23:30,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 10:23:30,933 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 10:23:31,477 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 133 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-27 10:23:31,478 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 10:23:31,970 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 133 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-27 10:23:32,005 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 10:23:32,005 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-27 10:23:32,006 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 10:23:32,006 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 10:23:32,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 10:23:32,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-10-27 10:23:32,007 INFO L87 Difference]: Start difference. First operand 4817 states and 7126 transitions. Second operand 9 states. [2018-10-27 10:23:36,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 10:23:36,369 INFO L93 Difference]: Finished difference Result 16165 states and 27149 transitions. [2018-10-27 10:23:36,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-27 10:23:36,374 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 252 [2018-10-27 10:23:36,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 10:23:36,454 INFO L225 Difference]: With dead ends: 16165 [2018-10-27 10:23:36,455 INFO L226 Difference]: Without dead ends: 12398 [2018-10-27 10:23:36,481 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 504 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2018-10-27 10:23:36,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12398 states. [2018-10-27 10:23:36,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12398 to 12315. [2018-10-27 10:23:36,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12315 states. [2018-10-27 10:23:36,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12315 states to 12315 states and 18694 transitions. [2018-10-27 10:23:36,919 INFO L78 Accepts]: Start accepts. Automaton has 12315 states and 18694 transitions. Word has length 252 [2018-10-27 10:23:36,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 10:23:36,920 INFO L481 AbstractCegarLoop]: Abstraction has 12315 states and 18694 transitions. [2018-10-27 10:23:36,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 10:23:36,920 INFO L276 IsEmpty]: Start isEmpty. Operand 12315 states and 18694 transitions. [2018-10-27 10:23:36,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-10-27 10:23:36,971 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 10:23:36,972 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 10:23:36,972 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 10:23:36,972 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 10:23:36,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1749922437, now seen corresponding path program 1 times [2018-10-27 10:23:36,973 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 10:23:36,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:23:36,974 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 10:23:36,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:23:36,974 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 10:23:37,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 10:23:37,572 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 165 proven. 50 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-27 10:23:37,572 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 10:23:37,572 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 10:23:37,573 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 306 with the following transitions: [2018-10-27 10:23:37,573 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [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], [194], [197], [201], [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], [315], [320], [322], [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], [677], [679], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 10:23:37,579 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 10:23:37,579 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 10:23:39,065 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 10:23:39,066 INFO L272 AbstractInterpreter]: Visited 158 different actions 311 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-27 10:23:39,075 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 10:23:39,075 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 10:23:39,075 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 10:23:39,075 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 10:23:39,085 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 10:23:39,085 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 10:23:39,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 10:23:39,321 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 10:23:39,915 WARN L179 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 10 [2018-10-27 10:23:39,967 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2018-10-27 10:23:39,967 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 10:23:40,566 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 165 proven. 50 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-27 10:23:40,601 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 10:23:40,601 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2018-10-27 10:23:40,602 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 10:23:40,603 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 10:23:40,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 10:23:40,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2018-10-27 10:23:40,603 INFO L87 Difference]: Start difference. First operand 12315 states and 18694 transitions. Second operand 10 states. [2018-10-27 10:23:50,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 10:23:50,184 INFO L93 Difference]: Finished difference Result 43408 states and 77997 transitions. [2018-10-27 10:23:50,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-27 10:23:50,185 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 305 [2018-10-27 10:23:50,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 10:23:50,403 INFO L225 Difference]: With dead ends: 43408 [2018-10-27 10:23:50,403 INFO L226 Difference]: Without dead ends: 32351 [2018-10-27 10:23:50,540 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 704 GetRequests, 647 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=646, Invalid=2660, Unknown=0, NotChecked=0, Total=3306 [2018-10-27 10:23:50,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32351 states. [2018-10-27 10:23:52,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32351 to 29283. [2018-10-27 10:23:52,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29283 states. [2018-10-27 10:23:52,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29283 states to 29283 states and 41291 transitions. [2018-10-27 10:23:52,206 INFO L78 Accepts]: Start accepts. Automaton has 29283 states and 41291 transitions. Word has length 305 [2018-10-27 10:23:52,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 10:23:52,207 INFO L481 AbstractCegarLoop]: Abstraction has 29283 states and 41291 transitions. [2018-10-27 10:23:52,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 10:23:52,207 INFO L276 IsEmpty]: Start isEmpty. Operand 29283 states and 41291 transitions. [2018-10-27 10:23:52,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-10-27 10:23:52,284 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 10:23:52,285 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 10:23:52,285 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 10:23:52,285 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 10:23:52,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1026601968, now seen corresponding path program 1 times [2018-10-27 10:23:52,285 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 10:23:52,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:23:52,286 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 10:23:52,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:23:52,287 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 10:23:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 10:23:52,890 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 195 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 10:23:52,890 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 10:23:52,890 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 10:23:52,890 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 307 with the following transitions: [2018-10-27 10:23:52,891 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [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], [194], [197], [201], [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], [436], [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], [677], [679], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 10:23:52,895 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 10:23:52,896 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 10:23:53,921 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 10:23:53,922 INFO L272 AbstractInterpreter]: Visited 156 different actions 306 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-27 10:23:53,929 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 10:23:53,929 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 10:23:55,359 INFO L227 lantSequenceWeakener]: Weakened 301 states. On average, predicates are now at 69.75% of their original sizes. [2018-10-27 10:23:55,359 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 10:23:55,668 INFO L415 sIntCurrentIteration]: We unified 305 AI predicates to 305 [2018-10-27 10:23:55,669 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 10:23:55,669 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 10:23:55,669 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-10-27 10:23:55,669 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 10:23:55,670 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-27 10:23:55,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-27 10:23:55,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2018-10-27 10:23:55,671 INFO L87 Difference]: Start difference. First operand 29283 states and 41291 transitions. Second operand 18 states. [2018-10-27 10:24:35,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 10:24:35,166 INFO L93 Difference]: Finished difference Result 56750 states and 81470 transitions. [2018-10-27 10:24:35,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-27 10:24:35,167 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 306 [2018-10-27 10:24:35,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 10:24:35,298 INFO L225 Difference]: With dead ends: 56750 [2018-10-27 10:24:35,298 INFO L226 Difference]: Without dead ends: 34140 [2018-10-27 10:24:35,348 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 314 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=157, Invalid=545, Unknown=0, NotChecked=0, Total=702 [2018-10-27 10:24:35,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34140 states. [2018-10-27 10:24:36,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34140 to 34133. [2018-10-27 10:24:36,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34133 states. [2018-10-27 10:24:36,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34133 states to 34133 states and 47184 transitions. [2018-10-27 10:24:36,191 INFO L78 Accepts]: Start accepts. Automaton has 34133 states and 47184 transitions. Word has length 306 [2018-10-27 10:24:36,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 10:24:36,191 INFO L481 AbstractCegarLoop]: Abstraction has 34133 states and 47184 transitions. [2018-10-27 10:24:36,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-27 10:24:36,192 INFO L276 IsEmpty]: Start isEmpty. Operand 34133 states and 47184 transitions. [2018-10-27 10:24:36,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2018-10-27 10:24:36,259 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 10:24:36,259 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 10:24:36,259 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 10:24:36,260 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 10:24:36,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1171168466, now seen corresponding path program 1 times [2018-10-27 10:24:36,260 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 10:24:36,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:24:36,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 10:24:36,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:24:36,261 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 10:24:36,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 10:24:36,848 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 10:24:36,848 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 10:24:36,848 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 10:24:36,849 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 310 with the following transitions: [2018-10-27 10:24:36,849 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [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], [600], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [677], [679], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 10:24:36,853 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 10:24:36,853 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 10:24:37,697 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 10:24:37,698 INFO L272 AbstractInterpreter]: Visited 157 different actions 306 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-27 10:24:37,710 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 10:24:37,710 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 10:24:37,710 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 10:24:37,710 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 10:24:37,718 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 10:24:37,718 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 10:24:37,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 10:24:37,940 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 10:24:38,083 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 10:24:38,083 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 10:24:38,273 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 10:24:38,294 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 10:24:38,294 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 7 [2018-10-27 10:24:38,294 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 10:24:38,295 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 10:24:38,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 10:24:38,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 10:24:38,295 INFO L87 Difference]: Start difference. First operand 34133 states and 47184 transitions. Second operand 6 states. [2018-10-27 10:24:41,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 10:24:41,977 INFO L93 Difference]: Finished difference Result 80769 states and 120140 transitions. [2018-10-27 10:24:41,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 10:24:41,978 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 309 [2018-10-27 10:24:41,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 10:24:42,190 INFO L225 Difference]: With dead ends: 80769 [2018-10-27 10:24:42,191 INFO L226 Difference]: Without dead ends: 48104 [2018-10-27 10:24:42,293 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 619 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-10-27 10:24:42,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48104 states. [2018-10-27 10:24:43,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48104 to 46933. [2018-10-27 10:24:43,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46933 states. [2018-10-27 10:24:43,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46933 states to 46933 states and 62181 transitions. [2018-10-27 10:24:43,552 INFO L78 Accepts]: Start accepts. Automaton has 46933 states and 62181 transitions. Word has length 309 [2018-10-27 10:24:43,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 10:24:43,557 INFO L481 AbstractCegarLoop]: Abstraction has 46933 states and 62181 transitions. [2018-10-27 10:24:43,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 10:24:43,557 INFO L276 IsEmpty]: Start isEmpty. Operand 46933 states and 62181 transitions. [2018-10-27 10:24:43,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2018-10-27 10:24:43,622 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 10:24:43,622 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 10:24:43,622 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 10:24:43,623 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 10:24:43,623 INFO L82 PathProgramCache]: Analyzing trace with hash -354857209, now seen corresponding path program 1 times [2018-10-27 10:24:43,623 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 10:24:43,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:24:43,624 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 10:24:43,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 10:24:43,624 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 10:24:43,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 10:24:43,991 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 244 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-27 10:24:43,991 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 10:24:43,991 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 10:24:43,991 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 346 with the following transitions: [2018-10-27 10:24:43,991 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [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], [194], [197], [201], [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], [543], [548], [550], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [677], [679], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 10:24:43,995 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 10:24:43,995 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 10:24:45,988 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 10:24:45,988 INFO L272 AbstractInterpreter]: Visited 160 different actions 472 times. Merged at 7 different actions 18 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 88 variables. [2018-10-27 10:24:45,996 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 10:24:45,996 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 10:24:47,737 INFO L227 lantSequenceWeakener]: Weakened 341 states. On average, predicates are now at 69.87% of their original sizes. [2018-10-27 10:24:47,737 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 10:24:48,164 INFO L415 sIntCurrentIteration]: We unified 344 AI predicates to 344 [2018-10-27 10:24:48,165 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 10:24:48,165 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 10:24:48,165 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [6] total 28 [2018-10-27 10:24:48,165 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 10:24:48,166 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-27 10:24:48,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-27 10:24:48,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2018-10-27 10:24:48,167 INFO L87 Difference]: Start difference. First operand 46933 states and 62181 transitions. Second operand 24 states. Received shutdown request... [2018-10-27 10:25:47,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-27 10:25:47,752 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 10:25:47,757 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 10:25:47,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 10:25:47 BoogieIcfgContainer [2018-10-27 10:25:47,757 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 10:25:47,758 INFO L168 Benchmark]: Toolchain (without parser) took 227786.57 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-27 10:25:47,759 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-10-27 10:25:47,760 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1121.26 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. [2018-10-27 10:25:47,761 INFO L168 Benchmark]: Boogie Procedure Inliner took 317.39 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 727.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -859.5 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. [2018-10-27 10:25:47,762 INFO L168 Benchmark]: Boogie Preprocessor took 121.43 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2018-10-27 10:25:47,762 INFO L168 Benchmark]: RCFGBuilder took 5077.14 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 266.3 MB). Peak memory consumption was 266.3 MB. Max. memory is 7.1 GB. [2018-10-27 10:25:47,763 INFO L168 Benchmark]: TraceAbstraction took 221144.00 ms. Allocated memory was 2.2 GB in the beginning and 4.0 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 2.7 GB in the end (delta: -837.0 MB). Peak memory consumption was 928.8 MB. Max. memory is 7.1 GB. [2018-10-27 10:25:47,768 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 1121.26 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 317.39 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 727.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -859.5 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.43 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5077.14 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 266.3 MB). Peak memory consumption was 266.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 221144.00 ms. Allocated memory was 2.2 GB in the beginning and 4.0 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 2.7 GB in the end (delta: -837.0 MB). Peak memory consumption was 928.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1470]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1470). Cancelled while BasicCegarLoop was constructing difference of abstraction (46933states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (22668 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 221.0s OverallTime, 11 OverallIterations, 4 TraceHistogramMax, 186.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2721 SDtfs, 17870 SDslu, 4286 SDs, 0 SdLazy, 29842 SolverSat, 4189 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 94.4s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 3422 GetRequests, 3198 SyntacticMatches, 8 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1819 ImplicationChecksByTransitivity, 7.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46933occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 10.9s AbstIntTime, 8 AbstIntIterations, 4 AbstIntStrong, 0.9990951281336118 AbsIntWeakeningRatio, 0.24549763033175356 AbsIntAvgWeakeningVarsNumRemoved, 59.23696682464455 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 4.7s AutomataMinimizationTime, 10 MinimizatonAttempts, 4649 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 7.7s InterpolantComputationTime, 3750 NumberOfCodeBlocks, 3750 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 4817 ConstructedInterpolants, 0 QuantifiedInterpolants, 3376732 SizeOfPredicates, 15 NumberOfNonLiveVariables, 4694 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 19 InterpolantComputations, 5 PerfectInterpolantSequences, 2366/2554 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown