java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-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/Problem14_label12_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 12:01:07,960 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 12:01:07,966 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 12:01:07,985 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 12:01:07,985 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 12:01:07,987 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 12:01:07,991 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 12:01:07,993 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 12:01:07,996 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 12:01:08,003 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 12:01:08,007 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 12:01:08,007 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 12:01:08,008 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 12:01:08,012 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 12:01:08,013 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 12:01:08,014 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 12:01:08,015 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 12:01:08,016 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 12:01:08,018 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 12:01:08,020 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 12:01:08,021 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 12:01:08,022 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 12:01:08,024 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 12:01:08,024 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 12:01:08,025 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 12:01:08,025 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 12:01:08,026 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 12:01:08,027 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 12:01:08,028 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 12:01:08,029 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 12:01:08,029 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 12:01:08,030 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 12:01:08,030 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 12:01:08,030 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 12:01:08,031 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 12:01:08,032 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 12:01:08,032 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 12:01:08,049 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 12:01:08,049 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 12:01:08,050 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 12:01:08,050 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 12:01:08,050 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 12:01:08,050 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 12:01:08,051 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 12:01:08,051 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 12:01:08,051 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 12:01:08,051 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 12:01:08,052 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 12:01:08,052 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 12:01:08,052 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 12:01:08,053 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 12:01:08,053 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 12:01:08,053 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 12:01:08,053 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 12:01:08,053 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 12:01:08,054 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 12:01:08,054 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 12:01:08,054 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 12:01:08,054 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 12:01:08,055 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 12:01:08,055 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 12:01:08,055 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 12:01:08,055 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 12:01:08,055 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 12:01:08,056 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 12:01:08,056 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 12:01:08,056 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 12:01:08,056 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 12:01:08,056 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 12:01:08,057 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 12:01:08,057 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 12:01:08,104 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 12:01:08,123 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 12:01:08,127 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 12:01:08,129 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 12:01:08,129 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 12:01:08,130 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label12_false-unreach-call_false-termination.c [2018-11-07 12:01:08,207 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97bf75f81/ed9df747d0d54b04a7d818e18394cc1b/FLAG08e396b1f [2018-11-07 12:01:08,811 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 12:01:08,812 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label12_false-unreach-call_false-termination.c [2018-11-07 12:01:08,836 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97bf75f81/ed9df747d0d54b04a7d818e18394cc1b/FLAG08e396b1f [2018-11-07 12:01:08,858 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97bf75f81/ed9df747d0d54b04a7d818e18394cc1b [2018-11-07 12:01:08,872 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 12:01:08,875 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 12:01:08,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 12:01:08,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 12:01:08,882 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 12:01:08,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:01:08" (1/1) ... [2018-11-07 12:01:08,886 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11aac10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:01:08, skipping insertion in model container [2018-11-07 12:01:08,887 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:01:08" (1/1) ... [2018-11-07 12:01:08,898 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 12:01:08,975 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 12:01:09,560 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 12:01:09,565 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 12:01:09,745 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 12:01:09,770 INFO L193 MainTranslator]: Completed translation [2018-11-07 12:01:09,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:01:09 WrapperNode [2018-11-07 12:01:09,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 12:01:09,772 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 12:01:09,772 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 12:01:09,772 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 12:01:09,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:01:09" (1/1) ... [2018-11-07 12:01:09,915 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:01:09" (1/1) ... [2018-11-07 12:01:09,926 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 12:01:09,926 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 12:01:09,929 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 12:01:09,929 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 12:01:09,944 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:01:09" (1/1) ... [2018-11-07 12:01:09,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:01:09" (1/1) ... [2018-11-07 12:01:09,951 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:01:09" (1/1) ... [2018-11-07 12:01:09,951 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:01:09" (1/1) ... [2018-11-07 12:01:09,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:01:09" (1/1) ... [2018-11-07 12:01:10,026 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:01:09" (1/1) ... [2018-11-07 12:01:10,039 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:01:09" (1/1) ... [2018-11-07 12:01:10,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 12:01:10,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 12:01:10,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 12:01:10,047 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 12:01:10,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:01:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 12:01:10,118 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 12:01:10,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 12:01:10,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 12:01:10,119 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 12:01:10,119 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 12:01:10,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 12:01:10,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 12:01:10,120 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 12:01:10,120 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 12:01:13,581 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 12:01:13,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:01:13 BoogieIcfgContainer [2018-11-07 12:01:13,586 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 12:01:13,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 12:01:13,587 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 12:01:13,591 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 12:01:13,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:01:08" (1/3) ... [2018-11-07 12:01:13,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5174f2f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:01:13, skipping insertion in model container [2018-11-07 12:01:13,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:01:09" (2/3) ... [2018-11-07 12:01:13,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5174f2f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:01:13, skipping insertion in model container [2018-11-07 12:01:13,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:01:13" (3/3) ... [2018-11-07 12:01:13,596 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label12_false-unreach-call_false-termination.c [2018-11-07 12:01:13,608 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 12:01:13,620 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 12:01:13,639 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 12:01:13,684 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 12:01:13,684 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 12:01:13,685 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 12:01:13,685 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 12:01:13,685 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 12:01:13,685 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 12:01:13,685 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 12:01:13,685 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 12:01:13,715 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-07 12:01:13,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-07 12:01:13,723 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:01:13,725 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 12:01:13,728 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:01:13,733 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:01:13,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1289249233, now seen corresponding path program 1 times [2018-11-07 12:01:13,737 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:01:13,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:01:13,795 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:01:13,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:01:13,795 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:01:13,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:01:14,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:01:14,180 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:01:14,180 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 12:01:14,180 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:01:14,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 12:01:14,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 12:01:14,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 12:01:14,209 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-11-07 12:01:16,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:01:16,059 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-11-07 12:01:16,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 12:01:16,063 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2018-11-07 12:01:16,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:01:16,083 INFO L225 Difference]: With dead ends: 691 [2018-11-07 12:01:16,083 INFO L226 Difference]: Without dead ends: 434 [2018-11-07 12:01:16,091 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 12:01:16,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-11-07 12:01:16,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-11-07 12:01:16,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-11-07 12:01:16,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-11-07 12:01:16,182 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 15 [2018-11-07 12:01:16,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:01:16,182 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-11-07 12:01:16,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 12:01:16,182 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-11-07 12:01:16,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-11-07 12:01:16,187 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:01:16,187 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 12:01:16,188 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:01:16,188 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:01:16,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1032198988, now seen corresponding path program 1 times [2018-11-07 12:01:16,189 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:01:16,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:01:16,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:01:16,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:01:16,191 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:01:16,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:01:16,556 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 12:01:16,616 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:01:16,617 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:01:16,617 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 12:01:16,617 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:01:16,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 12:01:16,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 12:01:16,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 12:01:16,620 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-11-07 12:01:20,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:01:20,190 INFO L93 Difference]: Finished difference Result 1587 states and 2933 transitions. [2018-11-07 12:01:20,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 12:01:20,190 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2018-11-07 12:01:20,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:01:20,202 INFO L225 Difference]: With dead ends: 1587 [2018-11-07 12:01:20,202 INFO L226 Difference]: Without dead ends: 1159 [2018-11-07 12:01:20,207 INFO L604 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 [2018-11-07 12:01:20,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2018-11-07 12:01:20,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1152. [2018-11-07 12:01:20,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1152 states. [2018-11-07 12:01:20,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1885 transitions. [2018-11-07 12:01:20,289 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1885 transitions. Word has length 85 [2018-11-07 12:01:20,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:01:20,290 INFO L480 AbstractCegarLoop]: Abstraction has 1152 states and 1885 transitions. [2018-11-07 12:01:20,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 12:01:20,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1885 transitions. [2018-11-07 12:01:20,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-11-07 12:01:20,304 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:01:20,304 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 12:01:20,305 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:01:20,305 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:01:20,305 INFO L82 PathProgramCache]: Analyzing trace with hash 273751564, now seen corresponding path program 1 times [2018-11-07 12:01:20,305 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:01:20,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:01:20,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:01:20,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:01:20,309 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:01:20,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:01:21,026 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:01:21,026 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:01:21,026 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 12:01:21,027 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:01:21,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 12:01:21,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 12:01:21,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 12:01:21,028 INFO L87 Difference]: Start difference. First operand 1152 states and 1885 transitions. Second operand 6 states. [2018-11-07 12:01:25,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:01:25,030 INFO L93 Difference]: Finished difference Result 3172 states and 5229 transitions. [2018-11-07 12:01:25,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 12:01:25,032 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2018-11-07 12:01:25,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:01:25,047 INFO L225 Difference]: With dead ends: 3172 [2018-11-07 12:01:25,047 INFO L226 Difference]: Without dead ends: 2026 [2018-11-07 12:01:25,056 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-11-07 12:01:25,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2018-11-07 12:01:25,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 1916. [2018-11-07 12:01:25,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1916 states. [2018-11-07 12:01:25,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 2950 transitions. [2018-11-07 12:01:25,120 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 2950 transitions. Word has length 181 [2018-11-07 12:01:25,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:01:25,121 INFO L480 AbstractCegarLoop]: Abstraction has 1916 states and 2950 transitions. [2018-11-07 12:01:25,121 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 12:01:25,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 2950 transitions. [2018-11-07 12:01:25,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-11-07 12:01:25,129 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:01:25,129 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 12:01:25,130 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:01:25,130 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:01:25,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1140820546, now seen corresponding path program 1 times [2018-11-07 12:01:25,130 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:01:25,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:01:25,132 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:01:25,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:01:25,132 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:01:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:01:25,472 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 16 proven. 66 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 12:01:25,473 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 12:01:25,473 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 12:01:25,475 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 253 with the following transitions: [2018-11-07 12:01:25,483 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [21], [23], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [878], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 12:01:25,567 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 12:01:25,568 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 12:01:26,367 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 12:01:26,370 INFO L272 AbstractInterpreter]: Visited 171 different actions 171 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 12:01:26,416 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:01:26,416 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 12:01:27,122 INFO L227 lantSequenceWeakener]: Weakened 243 states. On average, predicates are now at 77.2% of their original sizes. [2018-11-07 12:01:27,122 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 12:01:27,618 INFO L415 sIntCurrentIteration]: We unified 251 AI predicates to 251 [2018-11-07 12:01:27,619 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 12:01:27,623 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 12:01:27,624 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2018-11-07 12:01:27,624 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:01:27,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 12:01:27,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 12:01:27,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 12:01:27,629 INFO L87 Difference]: Start difference. First operand 1916 states and 2950 transitions. Second operand 8 states. [2018-11-07 12:01:34,108 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 12:02:22,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:02:22,602 INFO L93 Difference]: Finished difference Result 4011 states and 6114 transitions. [2018-11-07 12:02:22,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 12:02:22,603 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 252 [2018-11-07 12:02:22,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:02:22,612 INFO L225 Difference]: With dead ends: 4011 [2018-11-07 12:02:22,613 INFO L226 Difference]: Without dead ends: 2101 [2018-11-07 12:02:22,619 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 253 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 12:02:22,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2101 states. [2018-11-07 12:02:22,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2101 to 2099. [2018-11-07 12:02:22,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2099 states. [2018-11-07 12:02:22,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2099 states to 2099 states and 3141 transitions. [2018-11-07 12:02:22,677 INFO L78 Accepts]: Start accepts. Automaton has 2099 states and 3141 transitions. Word has length 252 [2018-11-07 12:02:22,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:02:22,677 INFO L480 AbstractCegarLoop]: Abstraction has 2099 states and 3141 transitions. [2018-11-07 12:02:22,677 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 12:02:22,678 INFO L276 IsEmpty]: Start isEmpty. Operand 2099 states and 3141 transitions. [2018-11-07 12:02:22,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-11-07 12:02:22,684 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:02:22,685 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 12:02:22,685 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:02:22,686 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:02:22,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1464242370, now seen corresponding path program 1 times [2018-11-07 12:02:22,686 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:02:22,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:02:22,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:02:22,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:02:22,688 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:02:22,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:02:23,226 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 12:02:23,424 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 12:02:24,076 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-11-07 12:02:24,527 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:02:24,528 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 12:02:24,528 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 12:02:24,528 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 267 with the following transitions: [2018-11-07 12:02:24,529 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [21], [23], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [878], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 12:02:24,535 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 12:02:24,536 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 12:02:24,998 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 12:02:39,433 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 12:02:39,433 INFO L272 AbstractInterpreter]: Visited 174 different actions 341 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 12:02:39,448 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:02:39,448 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 12:02:53,443 INFO L227 lantSequenceWeakener]: Weakened 114 states. On average, predicates are now at 77.49% of their original sizes. [2018-11-07 12:02:53,444 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 12:02:54,262 INFO L415 sIntCurrentIteration]: We unified 265 AI predicates to 265 [2018-11-07 12:02:54,262 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 12:02:54,263 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 12:02:54,263 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [25] imperfect sequences [14] total 37 [2018-11-07 12:02:54,263 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:02:54,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-11-07 12:02:54,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-11-07 12:02:54,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=481, Unknown=0, NotChecked=0, Total=600 [2018-11-07 12:02:54,266 INFO L87 Difference]: Start difference. First operand 2099 states and 3141 transitions. Second operand 25 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown