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/Problem16_label00_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 16:40:09,721 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 16:40:09,724 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 16:40:09,741 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 16:40:09,741 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 16:40:09,742 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 16:40:09,743 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 16:40:09,745 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 16:40:09,747 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 16:40:09,748 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 16:40:09,749 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 16:40:09,749 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 16:40:09,750 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 16:40:09,751 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 16:40:09,752 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 16:40:09,753 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 16:40:09,754 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 16:40:09,756 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 16:40:09,758 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 16:40:09,759 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 16:40:09,761 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 16:40:09,762 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 16:40:09,764 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 16:40:09,764 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 16:40:09,764 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 16:40:09,765 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 16:40:09,766 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 16:40:09,767 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 16:40:09,768 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 16:40:09,769 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 16:40:09,769 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 16:40:09,770 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 16:40:09,770 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 16:40:09,770 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 16:40:09,771 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 16:40:09,772 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 16:40:09,772 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 16:40:09,798 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 16:40:09,799 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 16:40:09,800 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 16:40:09,800 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 16:40:09,800 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 16:40:09,800 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 16:40:09,801 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 16:40:09,801 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 16:40:09,801 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 16:40:09,801 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 16:40:09,801 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 16:40:09,802 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 16:40:09,802 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 16:40:09,802 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 16:40:09,803 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 16:40:09,804 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 16:40:09,804 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 16:40:09,804 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 16:40:09,804 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 16:40:09,804 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 16:40:09,805 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 16:40:09,805 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 16:40:09,805 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 16:40:09,805 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 16:40:09,805 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 16:40:09,806 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:40:09,807 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 16:40:09,807 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 16:40:09,807 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 16:40:09,807 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 16:40:09,808 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 16:40:09,808 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 16:40:09,808 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 16:40:09,808 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 16:40:09,808 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 16:40:09,869 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 16:40:09,881 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 16:40:09,884 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 16:40:09,886 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 16:40:09,886 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 16:40:09,886 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label00_false-unreach-call.c [2018-11-12 16:40:09,952 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a72600c24/1078d0a8773e41fbbac6f695fee0d978/FLAG1f4d912da [2018-11-12 16:40:10,628 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 16:40:10,628 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label00_false-unreach-call.c [2018-11-12 16:40:10,650 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a72600c24/1078d0a8773e41fbbac6f695fee0d978/FLAG1f4d912da [2018-11-12 16:40:10,662 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a72600c24/1078d0a8773e41fbbac6f695fee0d978 [2018-11-12 16:40:10,672 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 16:40:10,674 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 16:40:10,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 16:40:10,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 16:40:10,679 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 16:40:10,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:40:10" (1/1) ... [2018-11-12 16:40:10,682 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c68cdb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:10, skipping insertion in model container [2018-11-12 16:40:10,682 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:40:10" (1/1) ... [2018-11-12 16:40:10,693 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 16:40:10,780 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 16:40:11,536 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:40:11,541 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 16:40:11,797 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:40:11,821 INFO L193 MainTranslator]: Completed translation [2018-11-12 16:40:11,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:11 WrapperNode [2018-11-12 16:40:11,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 16:40:11,823 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 16:40:11,823 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 16:40:11,824 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 16:40:11,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:11" (1/1) ... [2018-11-12 16:40:12,025 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:11" (1/1) ... [2018-11-12 16:40:12,044 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 16:40:12,044 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 16:40:12,047 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 16:40:12,048 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 16:40:12,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:11" (1/1) ... [2018-11-12 16:40:12,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:11" (1/1) ... [2018-11-12 16:40:12,066 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:11" (1/1) ... [2018-11-12 16:40:12,067 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:11" (1/1) ... [2018-11-12 16:40:12,133 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:11" (1/1) ... [2018-11-12 16:40:12,162 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:11" (1/1) ... [2018-11-12 16:40:12,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:11" (1/1) ... [2018-11-12 16:40:12,203 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 16:40:12,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 16:40:12,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 16:40:12,204 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 16:40:12,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:11" (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 16:40:12,272 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 16:40:12,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 16:40:12,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 16:40:12,273 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 16:40:12,273 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 16:40:12,273 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 16:40:12,274 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 16:40:12,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 16:40:12,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 16:40:12,274 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 16:40:12,274 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 16:40:18,191 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 16:40:18,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:40:18 BoogieIcfgContainer [2018-11-12 16:40:18,192 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 16:40:18,193 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 16:40:18,194 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 16:40:18,197 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 16:40:18,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:40:10" (1/3) ... [2018-11-12 16:40:18,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c50bb7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:40:18, skipping insertion in model container [2018-11-12 16:40:18,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:40:11" (2/3) ... [2018-11-12 16:40:18,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c50bb7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:40:18, skipping insertion in model container [2018-11-12 16:40:18,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:40:18" (3/3) ... [2018-11-12 16:40:18,201 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label00_false-unreach-call.c [2018-11-12 16:40:18,210 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 16:40:18,218 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 16:40:18,235 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 16:40:18,277 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 16:40:18,277 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 16:40:18,277 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 16:40:18,277 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 16:40:18,277 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 16:40:18,278 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 16:40:18,278 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 16:40:18,278 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 16:40:18,312 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-12 16:40:18,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-12 16:40:18,320 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:40:18,321 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] [2018-11-12 16:40:18,324 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:40:18,330 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:40:18,331 INFO L82 PathProgramCache]: Analyzing trace with hash 479052124, now seen corresponding path program 1 times [2018-11-12 16:40:18,333 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:40:18,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:40:18,385 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:40:18,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:40:18,385 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:40:18,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:40:18,797 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 16:40:18,803 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:40:18,803 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 16:40:18,804 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:40:18,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:40:18,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:40:18,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:40:18,835 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-12 16:40:22,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:40:22,370 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-12 16:40:22,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:40:22,372 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2018-11-12 16:40:22,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:40:22,394 INFO L225 Difference]: With dead ends: 1156 [2018-11-12 16:40:22,395 INFO L226 Difference]: Without dead ends: 744 [2018-11-12 16:40:22,405 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 [2018-11-12 16:40:22,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-12 16:40:22,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-12 16:40:22,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-12 16:40:22,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1317 transitions. [2018-11-12 16:40:22,533 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1317 transitions. Word has length 28 [2018-11-12 16:40:22,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:40:22,535 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1317 transitions. [2018-11-12 16:40:22,535 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:40:22,535 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1317 transitions. [2018-11-12 16:40:22,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-11-12 16:40:22,545 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:40:22,546 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:22,546 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:40:22,546 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:40:22,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1414003778, now seen corresponding path program 1 times [2018-11-12 16:40:22,547 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:40:22,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:40:22,550 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:40:22,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:40:22,550 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:40:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:40:22,980 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:40:22,981 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:40:22,981 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:40:22,981 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:40:22,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:40:22,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:40:22,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:40:22,984 INFO L87 Difference]: Start difference. First operand 744 states and 1317 transitions. Second operand 6 states. [2018-11-12 16:40:32,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:40:32,942 INFO L93 Difference]: Finished difference Result 2960 states and 5499 transitions. [2018-11-12 16:40:32,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-12 16:40:32,943 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2018-11-12 16:40:32,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:40:32,971 INFO L225 Difference]: With dead ends: 2960 [2018-11-12 16:40:32,971 INFO L226 Difference]: Without dead ends: 2222 [2018-11-12 16:40:32,986 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-12 16:40:32,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2222 states. [2018-11-12 16:40:33,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2222 to 2174. [2018-11-12 16:40:33,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2174 states. [2018-11-12 16:40:33,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2174 states to 2174 states and 3683 transitions. [2018-11-12 16:40:33,129 INFO L78 Accepts]: Start accepts. Automaton has 2174 states and 3683 transitions. Word has length 104 [2018-11-12 16:40:33,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:40:33,129 INFO L480 AbstractCegarLoop]: Abstraction has 2174 states and 3683 transitions. [2018-11-12 16:40:33,130 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:40:33,130 INFO L276 IsEmpty]: Start isEmpty. Operand 2174 states and 3683 transitions. [2018-11-12 16:40:33,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-11-12 16:40:33,136 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:40:33,136 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:33,136 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:40:33,137 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:40:33,137 INFO L82 PathProgramCache]: Analyzing trace with hash 451977974, now seen corresponding path program 1 times [2018-11-12 16:40:33,137 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:40:33,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:40:33,138 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:40:33,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:40:33,139 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:40:33,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:40:33,409 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:40:33,410 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:40:33,410 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:40:33,410 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:40:33,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:40:33,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:40:33,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:40:33,412 INFO L87 Difference]: Start difference. First operand 2174 states and 3683 transitions. Second operand 6 states. [2018-11-12 16:40:38,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:40:38,545 INFO L93 Difference]: Finished difference Result 8071 states and 14505 transitions. [2018-11-12 16:40:38,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:40:38,548 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2018-11-12 16:40:38,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:40:38,599 INFO L225 Difference]: With dead ends: 8071 [2018-11-12 16:40:38,599 INFO L226 Difference]: Without dead ends: 5903 [2018-11-12 16:40:38,637 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 [2018-11-12 16:40:38,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5903 states. [2018-11-12 16:40:38,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5903 to 5825. [2018-11-12 16:40:38,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5825 states. [2018-11-12 16:40:38,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5825 states to 5825 states and 8976 transitions. [2018-11-12 16:40:38,826 INFO L78 Accepts]: Start accepts. Automaton has 5825 states and 8976 transitions. Word has length 108 [2018-11-12 16:40:38,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:40:38,827 INFO L480 AbstractCegarLoop]: Abstraction has 5825 states and 8976 transitions. [2018-11-12 16:40:38,827 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:40:38,827 INFO L276 IsEmpty]: Start isEmpty. Operand 5825 states and 8976 transitions. [2018-11-12 16:40:38,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-11-12 16:40:38,830 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:40:38,830 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:38,830 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:40:38,830 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:40:38,831 INFO L82 PathProgramCache]: Analyzing trace with hash -2109280622, now seen corresponding path program 1 times [2018-11-12 16:40:38,831 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:40:38,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:40:38,832 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:40:38,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:40:38,832 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:40:38,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:40:39,069 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:40:39,124 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:40:39,125 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:40:39,125 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:40:39,125 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:40:39,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:40:39,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:40:39,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:40:39,126 INFO L87 Difference]: Start difference. First operand 5825 states and 8976 transitions. Second operand 6 states. [2018-11-12 16:40:42,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:40:42,804 INFO L93 Difference]: Finished difference Result 13807 states and 22474 transitions. [2018-11-12 16:40:42,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:40:42,805 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 110 [2018-11-12 16:40:42,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:40:42,859 INFO L225 Difference]: With dead ends: 13807 [2018-11-12 16:40:42,859 INFO L226 Difference]: Without dead ends: 7988 [2018-11-12 16:40:42,908 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:40:42,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7988 states. [2018-11-12 16:40:43,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7988 to 7910. [2018-11-12 16:40:43,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7910 states. [2018-11-12 16:40:43,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7910 states to 7910 states and 11605 transitions. [2018-11-12 16:40:43,206 INFO L78 Accepts]: Start accepts. Automaton has 7910 states and 11605 transitions. Word has length 110 [2018-11-12 16:40:43,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:40:43,207 INFO L480 AbstractCegarLoop]: Abstraction has 7910 states and 11605 transitions. [2018-11-12 16:40:43,207 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:40:43,207 INFO L276 IsEmpty]: Start isEmpty. Operand 7910 states and 11605 transitions. [2018-11-12 16:40:43,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-11-12 16:40:43,209 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:40:43,210 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:43,210 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:40:43,210 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:40:43,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1129448615, now seen corresponding path program 1 times [2018-11-12 16:40:43,210 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:40:43,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:40:43,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:40:43,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:40:43,212 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:40:43,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:40:43,406 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:40:43,406 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:40:43,407 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:40:43,407 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:40:43,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:40:43,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:40:43,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:40:43,408 INFO L87 Difference]: Start difference. First operand 7910 states and 11605 transitions. Second operand 6 states. [2018-11-12 16:40:46,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:40:46,540 INFO L93 Difference]: Finished difference Result 19265 states and 30273 transitions. [2018-11-12 16:40:46,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:40:46,541 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2018-11-12 16:40:46,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:40:46,615 INFO L225 Difference]: With dead ends: 19265 [2018-11-12 16:40:46,616 INFO L226 Difference]: Without dead ends: 11361 [2018-11-12 16:40:46,651 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 [2018-11-12 16:40:46,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11361 states. [2018-11-12 16:40:46,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11361 to 11328. [2018-11-12 16:40:46,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11328 states. [2018-11-12 16:40:46,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11328 states to 11328 states and 16188 transitions. [2018-11-12 16:40:46,949 INFO L78 Accepts]: Start accepts. Automaton has 11328 states and 16188 transitions. Word has length 113 [2018-11-12 16:40:46,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:40:46,949 INFO L480 AbstractCegarLoop]: Abstraction has 11328 states and 16188 transitions. [2018-11-12 16:40:46,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:40:46,949 INFO L276 IsEmpty]: Start isEmpty. Operand 11328 states and 16188 transitions. [2018-11-12 16:40:46,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-11-12 16:40:46,952 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:40:46,953 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:46,953 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:40:46,953 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:40:46,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1693537022, now seen corresponding path program 1 times [2018-11-12 16:40:46,953 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:40:46,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:40:46,954 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:40:46,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:40:46,957 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:40:46,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:40:47,218 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:40:47,553 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:40:47,554 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:40:47,554 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:40:47,554 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:40:47,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:40:47,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:40:47,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:40:47,555 INFO L87 Difference]: Start difference. First operand 11328 states and 16188 transitions. Second operand 6 states. [2018-11-12 16:40:51,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:40:51,604 INFO L93 Difference]: Finished difference Result 24435 states and 35624 transitions. [2018-11-12 16:40:51,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:40:51,605 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2018-11-12 16:40:51,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:40:51,660 INFO L225 Difference]: With dead ends: 24435 [2018-11-12 16:40:51,661 INFO L226 Difference]: Without dead ends: 13113 [2018-11-12 16:40:51,691 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:40:51,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13113 states. [2018-11-12 16:40:51,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13113 to 13087. [2018-11-12 16:40:51,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13087 states. [2018-11-12 16:40:52,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13087 states to 13087 states and 17330 transitions. [2018-11-12 16:40:52,001 INFO L78 Accepts]: Start accepts. Automaton has 13087 states and 17330 transitions. Word has length 118 [2018-11-12 16:40:52,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:40:52,002 INFO L480 AbstractCegarLoop]: Abstraction has 13087 states and 17330 transitions. [2018-11-12 16:40:52,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:40:52,002 INFO L276 IsEmpty]: Start isEmpty. Operand 13087 states and 17330 transitions. [2018-11-12 16:40:52,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-11-12 16:40:52,003 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:40:52,006 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:52,006 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:40:52,010 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:40:52,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1314242402, now seen corresponding path program 1 times [2018-11-12 16:40:52,010 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:40:52,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:40:52,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:40:52,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:40:52,011 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:40:52,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:40:52,688 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:40:52,688 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:40:52,688 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:40:52,689 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 121 with the following transitions: [2018-11-12 16:40:52,693 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [303], [305], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 16:40:52,752 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:40:52,752 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:40:53,468 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:40:53,992 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:40:53,993 INFO L272 AbstractInterpreter]: Visited 100 different actions 286 times. Merged at 5 different actions 9 times. Never widened. Performed 4384 root evaluator evaluations with a maximum evaluation depth of 6. Performed 4384 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 16:40:54,039 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:40:54,040 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:40:54,041 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:40:54,041 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:40:54,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:40:54,057 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:40:54,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:40:54,133 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:40:58,511 WARN L179 SmtUtils]: Spent 3.99 s on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2018-11-12 16:40:58,662 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:40:58,662 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:40:58,921 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:40:58,954 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-12 16:40:58,954 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 6] total 10 [2018-11-12 16:40:58,954 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:40:58,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:40:58,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:40:58,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-11-12 16:40:58,956 INFO L87 Difference]: Start difference. First operand 13087 states and 17330 transitions. Second operand 3 states. [2018-11-12 16:41:04,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:41:04,165 INFO L93 Difference]: Finished difference Result 32507 states and 44101 transitions. [2018-11-12 16:41:04,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:41:04,169 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 120 [2018-11-12 16:41:04,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:41:04,273 INFO L225 Difference]: With dead ends: 32507 [2018-11-12 16:41:04,273 INFO L226 Difference]: Without dead ends: 19426 [2018-11-12 16:41:04,462 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 236 SyntacticMatches, 4 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-11-12 16:41:04,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19426 states. [2018-11-12 16:41:05,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19426 to 19421. [2018-11-12 16:41:05,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19421 states. [2018-11-12 16:41:05,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19421 states to 19421 states and 25120 transitions. [2018-11-12 16:41:05,081 INFO L78 Accepts]: Start accepts. Automaton has 19421 states and 25120 transitions. Word has length 120 [2018-11-12 16:41:05,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:41:05,082 INFO L480 AbstractCegarLoop]: Abstraction has 19421 states and 25120 transitions. [2018-11-12 16:41:05,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:41:05,082 INFO L276 IsEmpty]: Start isEmpty. Operand 19421 states and 25120 transitions. [2018-11-12 16:41:05,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-11-12 16:41:05,087 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:41:05,088 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:41:05,088 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:41:05,088 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:41:05,089 INFO L82 PathProgramCache]: Analyzing trace with hash 98184870, now seen corresponding path program 1 times [2018-11-12 16:41:05,089 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:41:05,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:41:05,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:41:05,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:41:05,090 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:41:05,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:41:05,428 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:41:06,053 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:41:06,054 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:41:06,054 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:41:06,054 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:41:06,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:41:06,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:41:06,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:41:06,055 INFO L87 Difference]: Start difference. First operand 19421 states and 25120 transitions. Second operand 6 states. [2018-11-12 16:41:10,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:41:10,514 INFO L93 Difference]: Finished difference Result 49158 states and 65437 transitions. [2018-11-12 16:41:10,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:41:10,514 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 212 [2018-11-12 16:41:10,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:41:10,639 INFO L225 Difference]: With dead ends: 49158 [2018-11-12 16:41:10,639 INFO L226 Difference]: Without dead ends: 29743 [2018-11-12 16:41:10,728 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:41:10,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29743 states. [2018-11-12 16:41:11,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29743 to 29370. [2018-11-12 16:41:11,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29370 states. [2018-11-12 16:41:11,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29370 states to 29370 states and 37168 transitions. [2018-11-12 16:41:11,303 INFO L78 Accepts]: Start accepts. Automaton has 29370 states and 37168 transitions. Word has length 212 [2018-11-12 16:41:11,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:41:11,304 INFO L480 AbstractCegarLoop]: Abstraction has 29370 states and 37168 transitions. [2018-11-12 16:41:11,304 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:41:11,304 INFO L276 IsEmpty]: Start isEmpty. Operand 29370 states and 37168 transitions. [2018-11-12 16:41:11,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-11-12 16:41:11,316 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:41:11,316 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:41:11,316 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:41:11,317 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:41:11,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1704225279, now seen corresponding path program 1 times [2018-11-12 16:41:11,317 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:41:11,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:41:11,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:41:11,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:41:11,318 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:41:11,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:41:11,995 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:41:11,996 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:41:11,996 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:41:11,996 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 294 with the following transitions: [2018-11-12 16:41:11,997 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [303], [305], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1445], [1449], [1452], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 16:41:12,011 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:41:12,011 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:41:12,532 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:41:12,532 INFO L272 AbstractInterpreter]: Visited 269 different actions 269 times. Never merged. Never widened. Performed 2782 root evaluator evaluations with a maximum evaluation depth of 6. Performed 2782 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 24 variables. [2018-11-12 16:41:12,567 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:41:12,568 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:41:13,218 INFO L227 lantSequenceWeakener]: Weakened 287 states. On average, predicates are now at 77.4% of their original sizes. [2018-11-12 16:41:13,219 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:41:13,505 INFO L415 sIntCurrentIteration]: We unified 292 AI predicates to 292 [2018-11-12 16:41:13,505 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:41:13,507 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:41:13,507 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2018-11-12 16:41:13,507 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:41:13,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-12 16:41:13,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-12 16:41:13,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:41:13,508 INFO L87 Difference]: Start difference. First operand 29370 states and 37168 transitions. Second operand 9 states. [2018-11-12 16:41:18,772 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:41:45,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:41:45,918 INFO L93 Difference]: Finished difference Result 59074 states and 74735 transitions. [2018-11-12 16:41:45,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-12 16:41:45,919 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 293 [2018-11-12 16:41:45,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:41:46,032 INFO L225 Difference]: With dead ends: 59074 [2018-11-12 16:41:46,033 INFO L226 Difference]: Without dead ends: 29710 [2018-11-12 16:41:46,104 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 295 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-11-12 16:41:46,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29710 states. [2018-11-12 16:41:46,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29710 to 29708. [2018-11-12 16:41:46,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29708 states. [2018-11-12 16:41:46,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29708 states to 29708 states and 37516 transitions. [2018-11-12 16:41:46,659 INFO L78 Accepts]: Start accepts. Automaton has 29708 states and 37516 transitions. Word has length 293 [2018-11-12 16:41:46,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:41:46,660 INFO L480 AbstractCegarLoop]: Abstraction has 29708 states and 37516 transitions. [2018-11-12 16:41:46,660 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-12 16:41:46,660 INFO L276 IsEmpty]: Start isEmpty. Operand 29708 states and 37516 transitions. [2018-11-12 16:41:46,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2018-11-12 16:41:46,682 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:41:46,682 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:41:46,682 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:41:46,683 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:41:46,683 INFO L82 PathProgramCache]: Analyzing trace with hash 111350138, now seen corresponding path program 1 times [2018-11-12 16:41:46,683 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:41:46,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:41:46,684 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:41:46,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:41:46,684 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:41:46,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:41:47,849 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 158 proven. 111 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-11-12 16:41:47,849 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:41:47,849 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:41:47,849 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 421 with the following transitions: [2018-11-12 16:41:47,850 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [303], [305], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [840], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1144], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 16:41:47,860 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:41:47,860 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:41:47,920 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:41:48,402 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:41:48,403 INFO L272 AbstractInterpreter]: Visited 198 different actions 580 times. Merged at 5 different actions 9 times. Never widened. Performed 8040 root evaluator evaluations with a maximum evaluation depth of 6. Performed 8040 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 16:41:48,407 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:41:48,407 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:41:48,407 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:41:48,407 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:41:48,416 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:41:48,416 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:41:48,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:41:48,547 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:41:48,725 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 335 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-11-12 16:41:48,726 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:41:49,785 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 158 proven. 111 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-11-12 16:41:49,805 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:41:49,805 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 18 [2018-11-12 16:41:49,805 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:41:49,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-12 16:41:49,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-12 16:41:49,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2018-11-12 16:41:49,807 INFO L87 Difference]: Start difference. First operand 29708 states and 37516 transitions. Second operand 16 states. [2018-11-12 16:42:02,930 WARN L179 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 24 [2018-11-12 16:42:03,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:42:03,237 INFO L93 Difference]: Finished difference Result 69283 states and 92882 transitions. [2018-11-12 16:42:03,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-11-12 16:42:03,237 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 420 [2018-11-12 16:42:03,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:42:03,353 INFO L225 Difference]: With dead ends: 69283 [2018-11-12 16:42:03,353 INFO L226 Difference]: Without dead ends: 38203 [2018-11-12 16:42:03,493 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 949 GetRequests, 873 SyntacticMatches, 8 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1698 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=955, Invalid=3875, Unknown=0, NotChecked=0, Total=4830 [2018-11-12 16:42:03,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38203 states. [2018-11-12 16:42:04,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38203 to 36648. [2018-11-12 16:42:04,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36648 states. [2018-11-12 16:42:04,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36648 states to 36648 states and 41358 transitions. [2018-11-12 16:42:04,152 INFO L78 Accepts]: Start accepts. Automaton has 36648 states and 41358 transitions. Word has length 420 [2018-11-12 16:42:04,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:42:04,152 INFO L480 AbstractCegarLoop]: Abstraction has 36648 states and 41358 transitions. [2018-11-12 16:42:04,152 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-12 16:42:04,152 INFO L276 IsEmpty]: Start isEmpty. Operand 36648 states and 41358 transitions. [2018-11-12 16:42:04,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2018-11-12 16:42:04,167 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:42:04,167 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 16:42:04,168 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:42:04,168 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:42:04,168 INFO L82 PathProgramCache]: Analyzing trace with hash 679213824, now seen corresponding path program 1 times [2018-11-12 16:42:04,168 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:42:04,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:42:04,169 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:42:04,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:42:04,170 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:42:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:42:04,888 WARN L179 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 17 [2018-11-12 16:42:05,360 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2018-11-12 16:42:05,361 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:42:05,361 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:42:05,361 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 453 with the following transitions: [2018-11-12 16:42:05,362 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [303], [305], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1128], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 16:42:05,366 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:42:05,366 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:42:05,656 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:42:06,052 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:42:06,052 INFO L272 AbstractInterpreter]: Visited 249 different actions 738 times. Merged at 7 different actions 15 times. Never widened. Performed 9638 root evaluator evaluations with a maximum evaluation depth of 6. Performed 9638 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-12 16:42:06,061 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:42:06,061 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:42:06,061 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:42:06,061 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:42:06,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:42:06,070 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:42:06,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:42:06,185 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:42:06,680 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 23 [2018-11-12 16:42:06,960 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2018-11-12 16:42:06,960 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:42:07,404 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 29 [2018-11-12 16:42:07,720 WARN L179 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 49 [2018-11-12 16:42:11,417 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2018-11-12 16:42:11,437 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:42:11,437 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2018-11-12 16:42:11,438 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:42:11,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-12 16:42:11,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-12 16:42:11,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2018-11-12 16:42:11,439 INFO L87 Difference]: Start difference. First operand 36648 states and 41358 transitions. Second operand 9 states. [2018-11-12 16:42:24,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:42:24,357 INFO L93 Difference]: Finished difference Result 79600 states and 89528 transitions. [2018-11-12 16:42:24,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-12 16:42:24,358 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 452 [2018-11-12 16:42:24,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:42:24,500 INFO L225 Difference]: With dead ends: 79600 [2018-11-12 16:42:24,500 INFO L226 Difference]: Without dead ends: 43274 [2018-11-12 16:42:24,629 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 922 GetRequests, 898 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2018-11-12 16:42:24,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43274 states. [2018-11-12 16:42:25,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43274 to 42668. [2018-11-12 16:42:25,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42668 states. [2018-11-12 16:42:25,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42668 states to 42668 states and 47831 transitions. [2018-11-12 16:42:25,370 INFO L78 Accepts]: Start accepts. Automaton has 42668 states and 47831 transitions. Word has length 452 [2018-11-12 16:42:25,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:42:25,372 INFO L480 AbstractCegarLoop]: Abstraction has 42668 states and 47831 transitions. [2018-11-12 16:42:25,372 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-12 16:42:25,372 INFO L276 IsEmpty]: Start isEmpty. Operand 42668 states and 47831 transitions. [2018-11-12 16:42:25,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2018-11-12 16:42:25,400 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:42:25,400 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:42:25,400 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:42:25,401 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:42:25,401 INFO L82 PathProgramCache]: Analyzing trace with hash 227033922, now seen corresponding path program 1 times [2018-11-12 16:42:25,401 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:42:25,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:42:25,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:42:25,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:42:25,402 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:42:25,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:42:26,073 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 230 proven. 111 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2018-11-12 16:42:26,073 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:42:26,073 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:42:26,074 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 545 with the following transitions: [2018-11-12 16:42:26,074 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [303], [305], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [840], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1048], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 16:42:26,078 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:42:26,079 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:42:26,447 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:42:26,447 INFO L272 AbstractInterpreter]: Visited 249 different actions 492 times. Merged at 5 different actions 5 times. Never widened. Performed 5844 root evaluator evaluations with a maximum evaluation depth of 6. Performed 5844 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 16:42:26,451 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:42:26,451 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:42:27,295 INFO L227 lantSequenceWeakener]: Weakened 172 states. On average, predicates are now at 77.82% of their original sizes. [2018-11-12 16:42:27,295 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:42:28,013 INFO L415 sIntCurrentIteration]: We unified 543 AI predicates to 543 [2018-11-12 16:42:28,014 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:42:28,014 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:42:28,014 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [6] total 25 [2018-11-12 16:42:28,014 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:42:28,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-12 16:42:28,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-12 16:42:28,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2018-11-12 16:42:28,015 INFO L87 Difference]: Start difference. First operand 42668 states and 47831 transitions. Second operand 21 states. [2018-11-12 16:42:39,898 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:42:58,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:42:58,598 INFO L93 Difference]: Finished difference Result 84029 states and 94355 transitions. [2018-11-12 16:42:58,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-12 16:42:58,598 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 544 [2018-11-12 16:42:58,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:42:58,738 INFO L225 Difference]: With dead ends: 84029 [2018-11-12 16:42:58,738 INFO L226 Difference]: Without dead ends: 41705 [2018-11-12 16:42:58,845 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 557 GetRequests, 508 SyntacticMatches, 16 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=225, Invalid=965, Unknown=0, NotChecked=0, Total=1190 [2018-11-12 16:42:58,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41705 states. [2018-11-12 16:42:59,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41705 to 41700. [2018-11-12 16:42:59,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41700 states. [2018-11-12 16:42:59,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41700 states to 41700 states and 46819 transitions. [2018-11-12 16:42:59,630 INFO L78 Accepts]: Start accepts. Automaton has 41700 states and 46819 transitions. Word has length 544 [2018-11-12 16:42:59,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:42:59,631 INFO L480 AbstractCegarLoop]: Abstraction has 41700 states and 46819 transitions. [2018-11-12 16:42:59,631 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-12 16:42:59,631 INFO L276 IsEmpty]: Start isEmpty. Operand 41700 states and 46819 transitions. [2018-11-12 16:42:59,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2018-11-12 16:42:59,652 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:42:59,653 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 16:42:59,653 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:42:59,653 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:42:59,655 INFO L82 PathProgramCache]: Analyzing trace with hash -660190747, now seen corresponding path program 1 times [2018-11-12 16:42:59,655 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:42:59,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:42:59,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:42:59,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:42:59,656 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:42:59,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:43:06,666 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2018-11-12 16:43:06,667 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:43:06,667 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:43:06,667 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 550 with the following transitions: [2018-11-12 16:43:06,668 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [303], [305], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1445], [1449], [1453], [1457], [1461], [1465], [1469], [1473], [1477], [1481], [1484], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 16:43:06,671 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:43:06,672 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:43:08,588 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:43:08,589 INFO L272 AbstractInterpreter]: Visited 282 different actions 2230 times. Merged at 7 different actions 54 times. Widened at 1 different actions 3 times. Performed 35293 root evaluator evaluations with a maximum evaluation depth of 6. Performed 35293 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 8 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-12 16:43:08,605 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:43:08,605 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:43:08,605 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:43:08,605 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:43:08,614 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:43:08,614 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:43:08,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:43:08,752 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:43:09,265 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2018-11-12 16:43:09,265 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:43:10,476 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 45 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:43:10,496 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:43:10,497 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 16 [2018-11-12 16:43:10,497 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:43:10,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-12 16:43:10,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-12 16:43:10,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2018-11-12 16:43:10,499 INFO L87 Difference]: Start difference. First operand 41700 states and 46819 transitions. Second operand 10 states. [2018-11-12 16:43:18,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:43:18,733 INFO L93 Difference]: Finished difference Result 85708 states and 96715 transitions. [2018-11-12 16:43:18,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-12 16:43:18,733 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 549 [2018-11-12 16:43:18,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:43:18,835 INFO L225 Difference]: With dead ends: 85708 [2018-11-12 16:43:18,835 INFO L226 Difference]: Without dead ends: 45273 [2018-11-12 16:43:18,909 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1119 GetRequests, 1091 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=186, Invalid=464, Unknown=0, NotChecked=0, Total=650 [2018-11-12 16:43:18,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45273 states. [2018-11-12 16:43:19,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45273 to 44507. [2018-11-12 16:43:19,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44507 states. [2018-11-12 16:43:19,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44507 states to 44507 states and 49960 transitions. [2018-11-12 16:43:19,674 INFO L78 Accepts]: Start accepts. Automaton has 44507 states and 49960 transitions. Word has length 549 [2018-11-12 16:43:19,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:43:19,676 INFO L480 AbstractCegarLoop]: Abstraction has 44507 states and 49960 transitions. [2018-11-12 16:43:19,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-12 16:43:19,677 INFO L276 IsEmpty]: Start isEmpty. Operand 44507 states and 49960 transitions. [2018-11-12 16:43:19,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2018-11-12 16:43:19,698 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:43:19,698 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 16:43:19,699 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:43:19,699 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:43:19,699 INFO L82 PathProgramCache]: Analyzing trace with hash 602294630, now seen corresponding path program 1 times [2018-11-12 16:43:19,699 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:43:19,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:43:19,700 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:43:19,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:43:19,700 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:43:19,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:43:20,827 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 288 proven. 2 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2018-11-12 16:43:20,828 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:43:20,828 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:43:20,829 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 639 with the following transitions: [2018-11-12 16:43:20,829 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [303], [305], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [840], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1385], [1389], [1392], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 16:43:20,833 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:43:20,834 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:43:21,311 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:43:23,221 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:43:23,221 INFO L272 AbstractInterpreter]: Visited 259 different actions 2536 times. Merged at 5 different actions 45 times. Widened at 1 different actions 5 times. Performed 44889 root evaluator evaluations with a maximum evaluation depth of 6. Performed 44889 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 16:43:23,232 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:43:23,232 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:43:24,113 INFO L227 lantSequenceWeakener]: Weakened 127 states. On average, predicates are now at 77.92% of their original sizes. [2018-11-12 16:43:24,113 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:43:24,572 INFO L415 sIntCurrentIteration]: We unified 637 AI predicates to 637 [2018-11-12 16:43:24,572 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:43:24,572 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:43:24,573 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [7] total 29 [2018-11-12 16:43:24,573 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:43:24,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-12 16:43:24,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-12 16:43:24,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=430, Unknown=0, NotChecked=0, Total=552 [2018-11-12 16:43:24,574 INFO L87 Difference]: Start difference. First operand 44507 states and 49960 transitions. Second operand 24 states. Received shutdown request... [2018-11-12 16:43:41,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-11-12 16:43:41,362 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 16:43:41,368 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 16:43:41,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 04:43:41 BoogieIcfgContainer [2018-11-12 16:43:41,369 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 16:43:41,371 INFO L168 Benchmark]: Toolchain (without parser) took 210696.80 ms. Allocated memory was 1.5 GB in the beginning and 5.1 GB in the end (delta: 3.6 GB). Free memory was 1.4 GB in the beginning and 3.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-11-12 16:43:41,373 INFO L168 Benchmark]: CDTParser took 0.23 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 16:43:41,374 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1147.78 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-11-12 16:43:41,374 INFO L168 Benchmark]: Boogie Procedure Inliner took 221.00 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -863.6 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2018-11-12 16:43:41,376 INFO L168 Benchmark]: Boogie Preprocessor took 159.25 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 16:43:41,377 INFO L168 Benchmark]: RCFGBuilder took 5987.67 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 250.9 MB). Peak memory consumption was 250.9 MB. Max. memory is 7.1 GB. [2018-11-12 16:43:41,378 INFO L168 Benchmark]: TraceAbstraction took 203176.25 ms. Allocated memory was 2.3 GB in the beginning and 5.1 GB in the end (delta: 2.9 GB). Free memory was 2.0 GB in the beginning and 3.6 GB in the end (delta: -1.6 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-11-12 16:43:41,388 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 1147.78 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 221.00 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -863.6 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 159.25 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 5987.67 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 250.9 MB). Peak memory consumption was 250.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 203176.25 ms. Allocated memory was 2.3 GB in the beginning and 5.1 GB in the end (delta: 2.9 GB). Free memory was 2.0 GB in the beginning and 3.6 GB in the end (delta: -1.6 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 70). Cancelled while BasicCegarLoop was constructing difference of abstraction (44507states) and FLOYD_HOARE automaton (currently 28 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (5749 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 203.1s OverallTime, 14 OverallIterations, 4 TraceHistogramMax, 155.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2474 SDtfs, 30028 SDslu, 3308 SDs, 0 SdLazy, 49618 SolverSat, 7827 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 82.1s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 4802 GetRequests, 4521 SyntacticMatches, 44 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2664 ImplicationChecksByTransitivity, 15.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44507occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 7.8s AbstIntTime, 7 AbstIntIterations, 3 AbstIntStrong, 0.99837758875891 AbsIntWeakeningRatio, 0.057065217391304345 AbsIntAvgWeakeningVarsNumRemoved, 14.966032608695652 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 6.0s AutomataMinimizationTime, 13 MinimizatonAttempts, 3575 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 19.7s InterpolantComputationTime, 5350 NumberOfCodeBlocks, 5350 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 6869 ConstructedInterpolants, 24 QuantifiedInterpolants, 39900207 SizeOfPredicates, 10 NumberOfNonLiveVariables, 2281 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 22 InterpolantComputations, 8 PerfectInterpolantSequences, 2943/3821 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown