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/Problem18_label46_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 15:46:01,706 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 15:46:01,710 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 15:46:01,725 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 15:46:01,725 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 15:46:01,726 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 15:46:01,727 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 15:46:01,729 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 15:46:01,731 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 15:46:01,732 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 15:46:01,733 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 15:46:01,733 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 15:46:01,734 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 15:46:01,735 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 15:46:01,736 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 15:46:01,737 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 15:46:01,738 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 15:46:01,739 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 15:46:01,742 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 15:46:01,743 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 15:46:01,744 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 15:46:01,745 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 15:46:01,748 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 15:46:01,755 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 15:46:01,755 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 15:46:01,756 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 15:46:01,757 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 15:46:01,757 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 15:46:01,774 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 15:46:01,774 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 15:46:01,775 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 15:46:01,775 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 15:46:01,775 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 15:46:01,776 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 15:46:01,776 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 15:46:01,776 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 15:46:01,776 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 15:46:01,776 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 15:46:01,777 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 15:46:01,777 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 15:46:01,778 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 15:46:01,778 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 15:46:01,779 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 15:46:01,779 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 15:46:01,779 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 15:46:01,779 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 15:46:01,779 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 15:46:01,781 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 15:46:01,781 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 15:46:01,781 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 15:46:01,781 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 15:46:01,781 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 15:46:01,782 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:46:01,782 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 15:46:01,782 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 15:46:01,782 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 15:46:01,782 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 15:46:01,783 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 15:46:01,784 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 15:46:01,784 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 15:46:01,784 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 15:46:01,784 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 15:46:01,848 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 15:46:01,868 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 15:46:01,872 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 15:46:01,874 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 15:46:01,875 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 15:46:01,876 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label46_true-unreach-call.c [2018-11-07 15:46:01,946 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74e56ef58/a53235677cfc4367bea9f5d2694fcec9/FLAG0878fe578 [2018-11-07 15:46:02,759 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 15:46:02,760 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label46_true-unreach-call.c [2018-11-07 15:46:02,792 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74e56ef58/a53235677cfc4367bea9f5d2694fcec9/FLAG0878fe578 [2018-11-07 15:46:02,813 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74e56ef58/a53235677cfc4367bea9f5d2694fcec9 [2018-11-07 15:46:02,825 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 15:46:02,828 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 15:46:02,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 15:46:02,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 15:46:02,837 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 15:46:02,838 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:46:02" (1/1) ... [2018-11-07 15:46:02,842 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36bd1723 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:46:02, skipping insertion in model container [2018-11-07 15:46:02,842 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:46:02" (1/1) ... [2018-11-07 15:46:02,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 15:46:02,984 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 15:46:04,069 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:46:04,077 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 15:46:04,655 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:46:04,684 INFO L193 MainTranslator]: Completed translation [2018-11-07 15:46:04,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:46:04 WrapperNode [2018-11-07 15:46:04,685 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 15:46:04,686 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 15:46:04,686 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 15:46:04,686 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 15:46:04,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:46:04" (1/1) ... [2018-11-07 15:46:04,943 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:46:04" (1/1) ... [2018-11-07 15:46:04,952 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 15:46:04,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 15:46:04,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 15:46:04,953 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 15:46:04,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:46:04" (1/1) ... [2018-11-07 15:46:04,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:46:04" (1/1) ... [2018-11-07 15:46:04,979 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:46:04" (1/1) ... [2018-11-07 15:46:04,979 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:46:04" (1/1) ... [2018-11-07 15:46:05,059 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:46:04" (1/1) ... [2018-11-07 15:46:05,089 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:46:04" (1/1) ... [2018-11-07 15:46:05,110 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:46:04" (1/1) ... [2018-11-07 15:46:05,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 15:46:05,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 15:46:05,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 15:46:05,129 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 15:46:05,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:46:04" (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 15:46:05,196 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 15:46:05,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 15:46:05,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 15:46:05,196 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 15:46:05,197 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 15:46:05,197 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 15:46:05,197 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 15:46:05,197 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 15:46:05,198 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 15:46:05,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 15:46:05,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 15:46:05,198 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 15:46:05,198 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 15:46:13,266 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 15:46:13,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:46:13 BoogieIcfgContainer [2018-11-07 15:46:13,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 15:46:13,268 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 15:46:13,268 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 15:46:13,272 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 15:46:13,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:46:02" (1/3) ... [2018-11-07 15:46:13,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4925c930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:46:13, skipping insertion in model container [2018-11-07 15:46:13,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:46:04" (2/3) ... [2018-11-07 15:46:13,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4925c930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:46:13, skipping insertion in model container [2018-11-07 15:46:13,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:46:13" (3/3) ... [2018-11-07 15:46:13,276 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label46_true-unreach-call.c [2018-11-07 15:46:13,286 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 15:46:13,295 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 15:46:13,312 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 15:46:13,360 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 15:46:13,360 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 15:46:13,361 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 15:46:13,361 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 15:46:13,361 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 15:46:13,361 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 15:46:13,361 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 15:46:13,362 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 15:46:13,423 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 15:46:13,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-11-07 15:46:13,433 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:46:13,434 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] [2018-11-07 15:46:13,438 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:46:13,445 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:46:13,446 INFO L82 PathProgramCache]: Analyzing trace with hash -121741353, now seen corresponding path program 1 times [2018-11-07 15:46:13,448 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:46:13,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:46:13,502 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:46:13,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:46:13,503 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:46:13,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:46:13,938 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:46:14,062 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 15:46:14,065 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:46:14,065 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 15:46:14,065 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:46:14,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 15:46:14,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 15:46:14,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 15:46:14,104 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-07 15:46:21,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:46:21,701 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-07 15:46:21,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 15:46:21,707 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2018-11-07 15:46:21,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:46:21,755 INFO L225 Difference]: With dead ends: 2251 [2018-11-07 15:46:21,755 INFO L226 Difference]: Without dead ends: 1474 [2018-11-07 15:46:21,771 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 15:46:21,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-07 15:46:21,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-07 15:46:21,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-07 15:46:21,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2801 transitions. [2018-11-07 15:46:21,921 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2801 transitions. Word has length 43 [2018-11-07 15:46:21,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:46:21,922 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2801 transitions. [2018-11-07 15:46:21,922 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 15:46:21,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2801 transitions. [2018-11-07 15:46:21,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-11-07 15:46:21,936 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:46:21,937 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:46:21,937 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:46:21,938 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:46:21,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1147726576, now seen corresponding path program 1 times [2018-11-07 15:46:21,938 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:46:21,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:46:21,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:46:21,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:46:21,945 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:46:21,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:46:22,264 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:46:22,265 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:46:22,265 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:46:22,265 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:46:22,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:46:22,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:46:22,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:46:22,268 INFO L87 Difference]: Start difference. First operand 1474 states and 2801 transitions. Second operand 6 states. [2018-11-07 15:46:35,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:46:35,708 INFO L93 Difference]: Finished difference Result 5789 states and 11192 transitions. [2018-11-07 15:46:35,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:46:35,718 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2018-11-07 15:46:35,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:46:35,756 INFO L225 Difference]: With dead ends: 5789 [2018-11-07 15:46:35,757 INFO L226 Difference]: Without dead ends: 4321 [2018-11-07 15:46:35,768 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 15:46:35,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4321 states. [2018-11-07 15:46:35,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4321 to 4295. [2018-11-07 15:46:35,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4295 states. [2018-11-07 15:46:35,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4295 states to 4295 states and 7032 transitions. [2018-11-07 15:46:35,932 INFO L78 Accepts]: Start accepts. Automaton has 4295 states and 7032 transitions. Word has length 117 [2018-11-07 15:46:35,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:46:35,933 INFO L480 AbstractCegarLoop]: Abstraction has 4295 states and 7032 transitions. [2018-11-07 15:46:35,933 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:46:35,934 INFO L276 IsEmpty]: Start isEmpty. Operand 4295 states and 7032 transitions. [2018-11-07 15:46:35,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-11-07 15:46:35,938 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:46:35,938 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:46:35,938 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:46:35,939 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:46:35,939 INFO L82 PathProgramCache]: Analyzing trace with hash 562465401, now seen corresponding path program 1 times [2018-11-07 15:46:35,939 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:46:35,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:46:35,940 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:46:35,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:46:35,941 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:46:35,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:46:36,226 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:46:36,226 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:46:36,227 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 15:46:36,227 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:46:36,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 15:46:36,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 15:46:36,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 15:46:36,228 INFO L87 Difference]: Start difference. First operand 4295 states and 7032 transitions. Second operand 5 states. [2018-11-07 15:46:46,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:46:46,491 INFO L93 Difference]: Finished difference Result 14334 states and 23466 transitions. [2018-11-07 15:46:46,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 15:46:46,496 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2018-11-07 15:46:46,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:46:46,550 INFO L225 Difference]: With dead ends: 14334 [2018-11-07 15:46:46,550 INFO L226 Difference]: Without dead ends: 10045 [2018-11-07 15:46:46,571 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 15:46:46,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10045 states. [2018-11-07 15:46:46,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10045 to 9941. [2018-11-07 15:46:46,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9941 states. [2018-11-07 15:46:46,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9941 states to 9941 states and 14577 transitions. [2018-11-07 15:46:46,805 INFO L78 Accepts]: Start accepts. Automaton has 9941 states and 14577 transitions. Word has length 120 [2018-11-07 15:46:46,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:46:46,805 INFO L480 AbstractCegarLoop]: Abstraction has 9941 states and 14577 transitions. [2018-11-07 15:46:46,806 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 15:46:46,806 INFO L276 IsEmpty]: Start isEmpty. Operand 9941 states and 14577 transitions. [2018-11-07 15:46:46,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-11-07 15:46:46,809 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:46:46,810 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:46:46,810 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:46:46,810 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:46:46,811 INFO L82 PathProgramCache]: Analyzing trace with hash -534758187, now seen corresponding path program 1 times [2018-11-07 15:46:46,811 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:46:46,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:46:46,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:46:46,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:46:46,812 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:46:46,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:46:47,059 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:46:47,059 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:46:47,060 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 15:46:47,060 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:46:47,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 15:46:47,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 15:46:47,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:46:47,061 INFO L87 Difference]: Start difference. First operand 9941 states and 14577 transitions. Second operand 4 states. [2018-11-07 15:46:55,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:46:55,035 INFO L93 Difference]: Finished difference Result 29911 states and 46757 transitions. [2018-11-07 15:46:55,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 15:46:55,036 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2018-11-07 15:46:55,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:46:55,137 INFO L225 Difference]: With dead ends: 29911 [2018-11-07 15:46:55,137 INFO L226 Difference]: Without dead ends: 19976 [2018-11-07 15:46:55,185 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:46:55,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19976 states. [2018-11-07 15:46:55,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19976 to 19973. [2018-11-07 15:46:55,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19973 states. [2018-11-07 15:46:55,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19973 states to 19973 states and 29037 transitions. [2018-11-07 15:46:55,644 INFO L78 Accepts]: Start accepts. Automaton has 19973 states and 29037 transitions. Word has length 150 [2018-11-07 15:46:55,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:46:55,644 INFO L480 AbstractCegarLoop]: Abstraction has 19973 states and 29037 transitions. [2018-11-07 15:46:55,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 15:46:55,644 INFO L276 IsEmpty]: Start isEmpty. Operand 19973 states and 29037 transitions. [2018-11-07 15:46:55,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-11-07 15:46:55,650 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:46:55,650 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 15:46:55,650 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:46:55,651 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:46:55,651 INFO L82 PathProgramCache]: Analyzing trace with hash 307186760, now seen corresponding path program 1 times [2018-11-07 15:46:55,651 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:46:55,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:46:55,655 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:46:55,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:46:55,655 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:46:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:46:55,880 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 72 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 15:46:55,881 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:46:55,881 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:46:55,882 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 191 with the following transitions: [2018-11-07 15:46:55,884 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1867], [1869], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2144], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 15:46:55,942 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:46:55,942 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:46:56,404 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 15:46:56,406 INFO L272 AbstractInterpreter]: Visited 82 different actions 82 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 15:46:56,460 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:46:56,461 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 15:46:57,003 INFO L227 lantSequenceWeakener]: Weakened 181 states. On average, predicates are now at 77.88% of their original sizes. [2018-11-07 15:46:57,003 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 15:46:57,294 INFO L415 sIntCurrentIteration]: We unified 189 AI predicates to 189 [2018-11-07 15:46:57,294 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 15:46:57,295 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 15:46:57,295 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-11-07 15:46:57,296 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:46:57,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 15:46:57,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 15:46:57,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 15:46:57,297 INFO L87 Difference]: Start difference. First operand 19973 states and 29037 transitions. Second operand 7 states. [2018-11-07 15:47:06,953 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown