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-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label33_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 16:56:18,689 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 16:56:18,691 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 16:56:18,706 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 16:56:18,706 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 16:56:18,707 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 16:56:18,708 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 16:56:18,710 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 16:56:18,712 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 16:56:18,713 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 16:56:18,714 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 16:56:18,714 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 16:56:18,715 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 16:56:18,716 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 16:56:18,717 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 16:56:18,718 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 16:56:18,719 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 16:56:18,722 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 16:56:18,724 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 16:56:18,725 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 16:56:18,730 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 16:56:18,734 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 16:56:18,738 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 16:56:18,738 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 16:56:18,738 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 16:56:18,739 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 16:56:18,740 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 16:56:18,741 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 16:56:18,742 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 16:56:18,743 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 16:56:18,743 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 16:56:18,744 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 16:56:18,744 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 16:56:18,744 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 16:56:18,745 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 16:56:18,745 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 16:56:18,746 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-LIM.epf [2018-11-12 16:56:18,770 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 16:56:18,770 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 16:56:18,771 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 16:56:18,774 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 16:56:18,774 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 16:56:18,774 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 16:56:18,775 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 16:56:18,775 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 16:56:18,775 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 16:56:18,775 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 16:56:18,775 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 16:56:18,775 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 16:56:18,776 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 16:56:18,778 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 16:56:18,778 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 16:56:18,778 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 16:56:18,778 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 16:56:18,779 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 16:56:18,779 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 16:56:18,779 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 16:56:18,779 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 16:56:18,779 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 16:56:18,780 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 16:56:18,781 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 16:56:18,781 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 16:56:18,781 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:56:18,782 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 16:56:18,782 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 16:56:18,782 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 16:56:18,782 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 16:56:18,782 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 16:56:18,783 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 16:56:18,783 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 16:56:18,783 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 16:56:18,784 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 16:56:18,839 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 16:56:18,858 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 16:56:18,862 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 16:56:18,864 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 16:56:18,864 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 16:56:18,865 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label33_false-unreach-call.c [2018-11-12 16:56:18,927 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5dd9cf6f6/b14904e8d48c4f11865c16848a61ea3f/FLAG0b6f1319b [2018-11-12 16:56:19,624 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 16:56:19,625 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label33_false-unreach-call.c [2018-11-12 16:56:19,654 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5dd9cf6f6/b14904e8d48c4f11865c16848a61ea3f/FLAG0b6f1319b [2018-11-12 16:56:19,676 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5dd9cf6f6/b14904e8d48c4f11865c16848a61ea3f [2018-11-12 16:56:19,690 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 16:56:19,692 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 16:56:19,693 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 16:56:19,693 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 16:56:19,698 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 16:56:19,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:56:19" (1/1) ... [2018-11-12 16:56:19,703 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@294e4f05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:56:19, skipping insertion in model container [2018-11-12 16:56:19,704 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:56:19" (1/1) ... [2018-11-12 16:56:19,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 16:56:19,866 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 16:56:21,071 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:56:21,076 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 16:56:21,552 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:56:21,580 INFO L193 MainTranslator]: Completed translation [2018-11-12 16:56:21,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:56:21 WrapperNode [2018-11-12 16:56:21,581 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 16:56:21,582 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 16:56:21,582 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 16:56:21,582 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 16:56:21,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:56:21" (1/1) ... [2018-11-12 16:56:21,840 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:56:21" (1/1) ... [2018-11-12 16:56:21,851 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 16:56:21,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 16:56:21,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 16:56:21,853 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 16:56:21,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:56:21" (1/1) ... [2018-11-12 16:56:21,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:56:21" (1/1) ... [2018-11-12 16:56:21,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:56:21" (1/1) ... [2018-11-12 16:56:21,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:56:21" (1/1) ... [2018-11-12 16:56:21,981 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:56:21" (1/1) ... [2018-11-12 16:56:22,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:56:21" (1/1) ... [2018-11-12 16:56:22,049 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:56:21" (1/1) ... [2018-11-12 16:56:22,082 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 16:56:22,083 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 16:56:22,083 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 16:56:22,083 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 16:56:22,084 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:56:21" (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 [2018-11-12 16:56:22,153 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 16:56:22,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 16:56:22,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 16:56:22,154 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-12 16:56:22,154 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-12 16:56:22,154 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 16:56:22,154 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 16:56:22,155 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 16:56:22,155 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 16:56:22,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 16:56:22,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 16:56:22,155 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 16:56:22,156 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 16:56:30,351 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 16:56:30,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:56:30 BoogieIcfgContainer [2018-11-12 16:56:30,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 16:56:30,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 16:56:30,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 16:56:30,356 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 16:56:30,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:56:19" (1/3) ... [2018-11-12 16:56:30,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e356dd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:56:30, skipping insertion in model container [2018-11-12 16:56:30,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:56:21" (2/3) ... [2018-11-12 16:56:30,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e356dd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:56:30, skipping insertion in model container [2018-11-12 16:56:30,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:56:30" (3/3) ... [2018-11-12 16:56:30,360 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label33_false-unreach-call.c [2018-11-12 16:56:30,370 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 16:56:30,380 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 16:56:30,398 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 16:56:30,445 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 16:56:30,445 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 16:56:30,445 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 16:56:30,445 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 16:56:30,446 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 16:56:30,446 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 16:56:30,446 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 16:56:30,446 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 16:56:30,489 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-12 16:56:30,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-12 16:56:30,496 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:56:30,498 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] [2018-11-12 16:56:30,500 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:56:30,506 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:56:30,506 INFO L82 PathProgramCache]: Analyzing trace with hash -2131428540, now seen corresponding path program 1 times [2018-11-12 16:56:30,508 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:56:30,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:56:30,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:56:30,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:56:30,564 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:56:30,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:56:30,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:56:30,929 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:56:30,929 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 16:56:30,930 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:56:30,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:56:30,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:56:30,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:56:30,961 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-12 16:56:38,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:56:38,184 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-12 16:56:38,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:56:38,189 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2018-11-12 16:56:38,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:56:38,229 INFO L225 Difference]: With dead ends: 2251 [2018-11-12 16:56:38,229 INFO L226 Difference]: Without dead ends: 1474 [2018-11-12 16:56:38,246 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 [2018-11-12 16:56:38,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-12 16:56:38,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-12 16:56:38,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-12 16:56:38,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2801 transitions. [2018-11-12 16:56:38,428 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2801 transitions. Word has length 30 [2018-11-12 16:56:38,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:56:38,429 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2801 transitions. [2018-11-12 16:56:38,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:56:38,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2801 transitions. [2018-11-12 16:56:38,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-11-12 16:56:38,439 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:56:38,439 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:56:38,440 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:56:38,440 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:56:38,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1038216950, now seen corresponding path program 1 times [2018-11-12 16:56:38,443 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:56:38,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:56:38,445 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:56:38,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:56:38,447 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:56:38,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:56:38,821 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:56:38,822 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:56:38,822 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:56:38,822 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:56:38,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:56:38,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:56:38,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:56:38,825 INFO L87 Difference]: Start difference. First operand 1474 states and 2801 transitions. Second operand 6 states. [2018-11-12 16:56:47,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:56:47,927 INFO L93 Difference]: Finished difference Result 4416 states and 8482 transitions. [2018-11-12 16:56:47,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:56:47,928 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2018-11-12 16:56:47,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:56:47,948 INFO L225 Difference]: With dead ends: 4416 [2018-11-12 16:56:47,949 INFO L226 Difference]: Without dead ends: 2948 [2018-11-12 16:56:47,954 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:56:47,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2018-11-12 16:56:48,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 2922. [2018-11-12 16:56:48,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2922 states. [2018-11-12 16:56:48,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2922 states to 2922 states and 5419 transitions. [2018-11-12 16:56:48,034 INFO L78 Accepts]: Start accepts. Automaton has 2922 states and 5419 transitions. Word has length 120 [2018-11-12 16:56:48,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:56:48,035 INFO L480 AbstractCegarLoop]: Abstraction has 2922 states and 5419 transitions. [2018-11-12 16:56:48,035 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:56:48,035 INFO L276 IsEmpty]: Start isEmpty. Operand 2922 states and 5419 transitions. [2018-11-12 16:56:48,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-11-12 16:56:48,041 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:56:48,042 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:56:48,042 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:56:48,042 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:56:48,042 INFO L82 PathProgramCache]: Analyzing trace with hash -659435033, now seen corresponding path program 1 times [2018-11-12 16:56:48,042 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:56:48,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:56:48,044 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:56:48,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:56:48,044 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:56:48,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:56:48,294 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:56:48,294 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:56:48,294 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:56:48,295 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:56:48,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:56:48,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:56:48,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:56:48,296 INFO L87 Difference]: Start difference. First operand 2922 states and 5419 transitions. Second operand 6 states. [2018-11-12 16:56:58,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:56:58,839 INFO L93 Difference]: Finished difference Result 11785 states and 22875 transitions. [2018-11-12 16:56:58,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-12 16:56:58,843 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2018-11-12 16:56:58,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:56:58,920 INFO L225 Difference]: With dead ends: 11785 [2018-11-12 16:56:58,920 INFO L226 Difference]: Without dead ends: 8869 [2018-11-12 16:56:58,953 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-12 16:56:58,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8869 states. [2018-11-12 16:56:59,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8869 to 8794. [2018-11-12 16:56:59,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8794 states. [2018-11-12 16:56:59,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8794 states to 8794 states and 14053 transitions. [2018-11-12 16:56:59,289 INFO L78 Accepts]: Start accepts. Automaton has 8794 states and 14053 transitions. Word has length 121 [2018-11-12 16:56:59,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:56:59,289 INFO L480 AbstractCegarLoop]: Abstraction has 8794 states and 14053 transitions. [2018-11-12 16:56:59,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:56:59,290 INFO L276 IsEmpty]: Start isEmpty. Operand 8794 states and 14053 transitions. [2018-11-12 16:56:59,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-11-12 16:56:59,301 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:56:59,302 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 16:56:59,302 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:56:59,302 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:56:59,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1610812807, now seen corresponding path program 1 times [2018-11-12 16:56:59,303 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:56:59,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:56:59,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:56:59,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:56:59,304 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:56:59,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:56:59,568 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:56:59,886 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 46 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 16:56:59,886 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:56:59,887 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:56:59,890 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 192 with the following transitions: [2018-11-12 16:56:59,892 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1763], [1765], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [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], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2200], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-12 16:56:59,955 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:56:59,955 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:57:00,485 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:57:00,487 INFO L272 AbstractInterpreter]: Visited 96 different actions 96 times. Never merged. Never widened. Performed 795 root evaluator evaluations with a maximum evaluation depth of 6. Performed 795 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 24 variables. [2018-11-12 16:57:00,508 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:57:00,508 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:57:00,956 INFO L227 lantSequenceWeakener]: Weakened 182 states. On average, predicates are now at 77.56% of their original sizes. [2018-11-12 16:57:00,957 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:57:01,305 INFO L415 sIntCurrentIteration]: We unified 190 AI predicates to 190 [2018-11-12 16:57:01,305 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:57:01,306 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:57:01,307 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-11-12 16:57:01,307 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:57:01,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-12 16:57:01,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-12 16:57:01,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-12 16:57:01,308 INFO L87 Difference]: Start difference. First operand 8794 states and 14053 transitions. Second operand 7 states. [2018-11-12 16:57:09,006 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:57:26,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:57:26,707 INFO L93 Difference]: Finished difference Result 18287 states and 29006 transitions. [2018-11-12 16:57:26,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:57:26,707 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 191 [2018-11-12 16:57:26,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:57:26,754 INFO L225 Difference]: With dead ends: 18287 [2018-11-12 16:57:26,754 INFO L226 Difference]: Without dead ends: 9499 [2018-11-12 16:57:26,785 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 191 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-12 16:57:26,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9499 states. [2018-11-12 16:57:27,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9499 to 9497. [2018-11-12 16:57:27,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9497 states. [2018-11-12 16:57:27,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9497 states to 9497 states and 14765 transitions. [2018-11-12 16:57:27,054 INFO L78 Accepts]: Start accepts. Automaton has 9497 states and 14765 transitions. Word has length 191 [2018-11-12 16:57:27,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:57:27,055 INFO L480 AbstractCegarLoop]: Abstraction has 9497 states and 14765 transitions. [2018-11-12 16:57:27,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-12 16:57:27,055 INFO L276 IsEmpty]: Start isEmpty. Operand 9497 states and 14765 transitions. [2018-11-12 16:57:27,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-11-12 16:57:27,068 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:57:27,069 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:57:27,069 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:57:27,070 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:57:27,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1068150026, now seen corresponding path program 1 times [2018-11-12 16:57:27,070 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:57:27,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:57:27,073 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:57:27,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:57:27,074 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:57:27,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:57:27,638 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 16:57:27,844 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 16:57:28,755 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 128 proven. 167 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 16:57:28,755 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:57:28,755 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:57:28,755 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 379 with the following transitions: [2018-11-12 16:57:28,756 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1763], [1765], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [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], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2200], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-12 16:57:28,765 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:57:28,765 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:57:29,681 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:57:29,682 INFO L272 AbstractInterpreter]: Visited 196 different actions 388 times. Merged at 5 different actions 7 times. Never widened. Performed 6159 root evaluator evaluations with a maximum evaluation depth of 6. Performed 6159 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:57:29,723 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:57:29,723 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:57:30,633 INFO L227 lantSequenceWeakener]: Weakened 85 states. On average, predicates are now at 77.49% of their original sizes. [2018-11-12 16:57:30,633 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:57:33,223 INFO L415 sIntCurrentIteration]: We unified 377 AI predicates to 377 [2018-11-12 16:57:33,223 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:57:33,224 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:57:33,224 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2018-11-12 16:57:33,224 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:57:33,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-12 16:57:33,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-12 16:57:33,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2018-11-12 16:57:33,225 INFO L87 Difference]: Start difference. First operand 9497 states and 14765 transitions. Second operand 16 states. [2018-11-12 16:57:59,192 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:58:29,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:58:29,827 INFO L93 Difference]: Finished difference Result 19829 states and 30731 transitions. [2018-11-12 16:58:29,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-12 16:58:29,827 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 378 [2018-11-12 16:58:29,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:58:29,878 INFO L225 Difference]: With dead ends: 19829 [2018-11-12 16:58:29,878 INFO L226 Difference]: Without dead ends: 11041 [2018-11-12 16:58:29,922 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 385 GetRequests, 347 SyntacticMatches, 16 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552 [2018-11-12 16:58:29,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11041 states. [2018-11-12 16:58:30,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11041 to 10803. [2018-11-12 16:58:30,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10803 states. [2018-11-12 16:58:30,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10803 states to 10803 states and 16098 transitions. [2018-11-12 16:58:30,195 INFO L78 Accepts]: Start accepts. Automaton has 10803 states and 16098 transitions. Word has length 378 [2018-11-12 16:58:30,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:58:30,196 INFO L480 AbstractCegarLoop]: Abstraction has 10803 states and 16098 transitions. [2018-11-12 16:58:30,196 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-12 16:58:30,196 INFO L276 IsEmpty]: Start isEmpty. Operand 10803 states and 16098 transitions. [2018-11-12 16:58:30,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 720 [2018-11-12 16:58:30,219 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:58:30,219 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:58:30,220 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:58:30,220 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:58:30,220 INFO L82 PathProgramCache]: Analyzing trace with hash -596573487, now seen corresponding path program 1 times [2018-11-12 16:58:30,220 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:58:30,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:58:30,225 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:58:30,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:58:30,225 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:58:30,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:58:30,853 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:58:31,658 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 75 proven. 153 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-12 16:58:31,659 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:58:31,659 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:58:31,659 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 720 with the following transitions: [2018-11-12 16:58:31,661 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [37], [739], [740], [744], [748], [752], [756], [760], [764], [768], [772], [776], [780], [784], [788], [792], [796], [800], [804], [808], [812], [816], [820], [824], [828], [832], [836], [840], [844], [848], [852], [856], [860], [864], [868], [872], [876], [880], [884], [888], [892], [896], [900], [904], [908], [912], [916], [920], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [964], [968], [972], [976], [980], [984], [988], [992], [996], [1000], [1004], [1008], [1012], [1016], [1020], [1024], [1028], [1032], [1036], [1040], [1044], [1048], [1052], [1056], [1060], [1064], [1068], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1184], [1188], [1192], [1196], [1200], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1248], [1252], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1360], [1364], [1368], [1372], [1376], [1380], [1384], [1388], [1392], [1396], [1400], [1404], [1408], [1412], [1416], [1420], [1424], [1428], [1432], [1436], [1440], [1444], [1448], [1452], [1456], [1460], [1464], [1468], [1472], [1476], [1480], [1484], [1488], [1492], [1496], [1500], [1504], [1508], [1512], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1552], [1556], [1560], [1564], [1568], [1572], [1576], [1580], [1584], [1588], [1592], [1596], [1600], [1604], [1608], [1612], [1616], [1620], [1622], [1623], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1763], [1765], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [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], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2200], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2949], [2953], [2957], [2961], [2965], [2969], [2973], [2977], [2981], [2985], [2989], [2993], [2995], [2996], [3000], [3004], [3010], [3014], [3016], [3021], [3022], [3023], [3024], [3025], [3026], [3027], [3029], [3030] [2018-11-12 16:58:31,684 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:58:31,684 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:58:33,727 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:58:33,727 INFO L272 AbstractInterpreter]: Visited 537 different actions 1070 times. Merged at 5 different actions 7 times. Never widened. Performed 20595 root evaluator evaluations with a maximum evaluation depth of 6. Performed 20595 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:58:33,732 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:58:33,732 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:58:34,868 INFO L227 lantSequenceWeakener]: Weakened 283 states. On average, predicates are now at 77.7% of their original sizes. [2018-11-12 16:58:34,868 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:58:35,622 INFO L415 sIntCurrentIteration]: We unified 718 AI predicates to 718 [2018-11-12 16:58:35,623 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:58:35,623 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:58:35,624 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [31] imperfect sequences [5] total 34 [2018-11-12 16:58:35,624 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:58:35,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-11-12 16:58:35,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-11-12 16:58:35,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=806, Unknown=0, NotChecked=0, Total=930 [2018-11-12 16:58:35,626 INFO L87 Difference]: Start difference. First operand 10803 states and 16098 transitions. Second operand 31 states. [2018-11-12 16:59:34,399 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-12 16:59:59,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-11-12 16:59:59,848 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 16:59:59,854 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 16:59:59,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 04:59:59 BoogieIcfgContainer [2018-11-12 16:59:59,854 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 16:59:59,855 INFO L168 Benchmark]: Toolchain (without parser) took 220165.10 ms. Allocated memory was 1.5 GB in the beginning and 4.8 GB in the end (delta: 3.3 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -483.0 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-11-12 16:59:59,857 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 16:59:59,857 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1888.41 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-11-12 16:59:59,858 INFO L168 Benchmark]: Boogie Procedure Inliner took 270.16 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 771.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -962.4 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-12 16:59:59,859 INFO L168 Benchmark]: Boogie Preprocessor took 229.97 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-11-12 16:59:59,860 INFO L168 Benchmark]: RCFGBuilder took 8268.92 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 512.2 MB). Peak memory consumption was 512.2 MB. Max. memory is 7.1 GB. [2018-11-12 16:59:59,860 INFO L168 Benchmark]: TraceAbstraction took 209502.31 ms. Allocated memory was 2.3 GB in the beginning and 4.8 GB in the end (delta: 2.5 GB). Free memory was 1.7 GB in the beginning and 1.9 GB in the end (delta: -194.5 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-11-12 16:59:59,866 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1888.41 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 270.16 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 771.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -962.4 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 229.97 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8268.92 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 512.2 MB). Peak memory consumption was 512.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 209502.31 ms. Allocated memory was 2.3 GB in the beginning and 4.8 GB in the end (delta: 2.5 GB). Free memory was 1.7 GB in the beginning and 1.9 GB in the end (delta: -194.5 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 78). Cancelled while BasicCegarLoop was constructing difference of abstraction (10803states) and FLOYD_HOARE automaton (currently 38 states, 31 states before enhancement),while ReachableStatesComputation was computing reachable states (11759 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 209.4s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 193.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2463 SDtfs, 17432 SDslu, 1335 SDs, 0 SdLazy, 39843 SolverSat, 4868 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 80.8s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 1353 GetRequests, 1228 SyntacticMatches, 19 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1015 ImplicationChecksByTransitivity, 5.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10803occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.6s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9977231605027241 AbsIntWeakeningRatio, 0.07626459143968872 AbsIntAvgWeakeningVarsNumRemoved, 14.901167315175098 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 341 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 1559 NumberOfCodeBlocks, 1559 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1553 ConstructedInterpolants, 0 QuantifiedInterpolants, 2676625 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 377/762 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown