java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label45_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 11:26:53,720 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 11:26:53,722 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 11:26:53,741 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 11:26:53,741 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 11:26:53,742 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 11:26:53,744 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 11:26:53,746 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 11:26:53,748 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 11:26:53,748 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 11:26:53,749 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 11:26:53,750 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 11:26:53,751 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 11:26:53,752 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 11:26:53,753 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 11:26:53,754 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 11:26:53,755 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 11:26:53,758 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 11:26:53,760 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 11:26:53,762 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 11:26:53,766 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 11:26:53,772 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 11:26:53,774 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 11:26:53,774 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 11:26:53,774 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 11:26:53,775 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 11:26:53,776 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 11:26:53,777 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 11:26:53,778 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 11:26:53,779 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 11:26:53,779 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 11:26:53,779 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 11:26:53,780 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 11:26:53,780 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 11:26:53,781 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 11:26:53,781 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 11:26:53,782 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 11:26:53,799 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 11:26:53,800 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 11:26:53,800 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 11:26:53,801 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 11:26:53,801 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 11:26:53,801 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 11:26:53,801 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 11:26:53,801 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 11:26:53,802 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 11:26:53,802 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 11:26:53,802 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 11:26:53,802 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 11:26:53,803 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 11:26:53,803 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 11:26:53,803 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 11:26:53,803 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 11:26:53,804 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 11:26:53,804 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 11:26:53,804 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 11:26:53,804 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 11:26:53,804 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 11:26:53,804 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 11:26:53,805 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 11:26:53,805 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 11:26:53,805 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 11:26:53,805 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 11:26:53,805 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 11:26:53,806 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 11:26:53,806 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 11:26:53,806 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 11:26:53,806 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 11:26:53,806 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 11:26:53,807 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 11:26:53,807 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 11:26:53,851 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 11:26:53,866 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 11:26:53,870 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 11:26:53,872 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 11:26:53,872 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 11:26:53,873 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label45_false-unreach-call.c [2018-10-27 11:26:53,931 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1bc42e7da/68b9b68513f44339be81dbb80e7327c3/FLAG82c33396a [2018-10-27 11:26:54,690 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 11:26:54,691 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label45_false-unreach-call.c [2018-10-27 11:26:54,729 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1bc42e7da/68b9b68513f44339be81dbb80e7327c3/FLAG82c33396a [2018-10-27 11:26:54,750 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1bc42e7da/68b9b68513f44339be81dbb80e7327c3 [2018-10-27 11:26:54,765 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 11:26:54,767 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 11:26:54,768 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 11:26:54,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 11:26:54,774 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 11:26:54,775 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:26:54" (1/1) ... [2018-10-27 11:26:54,778 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31cb433d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:26:54, skipping insertion in model container [2018-10-27 11:26:54,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:26:54" (1/1) ... [2018-10-27 11:26:54,789 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 11:26:54,959 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 11:26:56,477 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 11:26:56,482 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 11:26:57,297 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 11:26:57,334 INFO L193 MainTranslator]: Completed translation [2018-10-27 11:26:57,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:26:57 WrapperNode [2018-10-27 11:26:57,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 11:26:57,336 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 11:26:57,336 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 11:26:57,336 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 11:26:57,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:26:57" (1/1) ... [2018-10-27 11:26:57,424 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:26:57" (1/1) ... [2018-10-27 11:26:57,963 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 11:26:57,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 11:26:57,964 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 11:26:57,964 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 11:26:57,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:26:57" (1/1) ... [2018-10-27 11:26:57,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:26:57" (1/1) ... [2018-10-27 11:26:58,013 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:26:57" (1/1) ... [2018-10-27 11:26:58,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:26:57" (1/1) ... [2018-10-27 11:26:58,191 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:26:57" (1/1) ... [2018-10-27 11:26:58,239 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:26:57" (1/1) ... [2018-10-27 11:26:58,309 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:26:57" (1/1) ... [2018-10-27 11:26:58,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 11:26:58,391 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 11:26:58,391 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 11:26:58,392 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 11:26:58,392 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:26:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 11:26:58,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 11:26:58,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 11:26:58,462 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-27 11:26:58,463 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-27 11:26:58,463 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 11:26:58,463 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 11:26:58,463 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 11:26:58,463 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 11:26:58,464 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 11:26:58,464 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 11:26:58,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 11:26:58,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 11:26:58,464 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 11:26:58,465 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 11:27:10,016 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 11:27:10,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:27:10 BoogieIcfgContainer [2018-10-27 11:27:10,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 11:27:10,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 11:27:10,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 11:27:10,022 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 11:27:10,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:26:54" (1/3) ... [2018-10-27 11:27:10,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a1650ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:27:10, skipping insertion in model container [2018-10-27 11:27:10,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:26:57" (2/3) ... [2018-10-27 11:27:10,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a1650ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:27:10, skipping insertion in model container [2018-10-27 11:27:10,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:27:10" (3/3) ... [2018-10-27 11:27:10,026 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label45_false-unreach-call.c [2018-10-27 11:27:10,036 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 11:27:10,045 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 11:27:10,063 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 11:27:10,117 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 11:27:10,117 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 11:27:10,117 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 11:27:10,117 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 11:27:10,118 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 11:27:10,118 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 11:27:10,118 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 11:27:10,118 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 11:27:10,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-27 11:27:10,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-27 11:27:10,182 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:27:10,183 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 11:27:10,185 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:27:10,193 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:27:10,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1438906236, now seen corresponding path program 1 times [2018-10-27 11:27:10,197 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:27:10,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:27:10,250 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:27:10,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:27:10,250 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:27:10,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:27:10,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:27:10,566 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:27:10,566 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 11:27:10,566 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:27:10,572 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 11:27:10,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 11:27:10,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 11:27:10,590 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-10-27 11:27:27,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:27:27,321 INFO L93 Difference]: Finished difference Result 4063 states and 7611 transitions. [2018-10-27 11:27:27,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 11:27:27,328 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-10-27 11:27:27,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:27:27,381 INFO L225 Difference]: With dead ends: 4063 [2018-10-27 11:27:27,381 INFO L226 Difference]: Without dead ends: 2937 [2018-10-27 11:27:27,396 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 11:27:27,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2018-10-27 11:27:27,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 1982. [2018-10-27 11:27:27,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1982 states. [2018-10-27 11:27:27,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1982 states to 1982 states and 3456 transitions. [2018-10-27 11:27:27,598 INFO L78 Accepts]: Start accepts. Automaton has 1982 states and 3456 transitions. Word has length 14 [2018-10-27 11:27:27,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:27:27,600 INFO L481 AbstractCegarLoop]: Abstraction has 1982 states and 3456 transitions. [2018-10-27 11:27:27,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 11:27:27,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1982 states and 3456 transitions. [2018-10-27 11:27:27,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-10-27 11:27:27,609 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:27:27,610 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 11:27:27,610 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:27:27,610 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:27:27,610 INFO L82 PathProgramCache]: Analyzing trace with hash 78818025, now seen corresponding path program 1 times [2018-10-27 11:27:27,611 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:27:27,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:27:27,613 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:27:27,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:27:27,613 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:27:27,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:27:28,041 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:27:28,042 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:27:28,042 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 11:27:28,042 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:27:28,045 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 11:27:28,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 11:27:28,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 11:27:28,046 INFO L87 Difference]: Start difference. First operand 1982 states and 3456 transitions. Second operand 6 states. [2018-10-27 11:27:47,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:27:47,870 INFO L93 Difference]: Finished difference Result 7283 states and 13073 transitions. [2018-10-27 11:27:47,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 11:27:47,873 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2018-10-27 11:27:47,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:27:47,915 INFO L225 Difference]: With dead ends: 7283 [2018-10-27 11:27:47,915 INFO L226 Difference]: Without dead ends: 5307 [2018-10-27 11:27:47,929 INFO L605 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 [2018-10-27 11:27:47,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5307 states. [2018-10-27 11:27:48,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5307 to 5255. [2018-10-27 11:27:48,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5255 states. [2018-10-27 11:27:48,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5255 states to 5255 states and 8261 transitions. [2018-10-27 11:27:48,190 INFO L78 Accepts]: Start accepts. Automaton has 5255 states and 8261 transitions. Word has length 85 [2018-10-27 11:27:48,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:27:48,190 INFO L481 AbstractCegarLoop]: Abstraction has 5255 states and 8261 transitions. [2018-10-27 11:27:48,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 11:27:48,191 INFO L276 IsEmpty]: Start isEmpty. Operand 5255 states and 8261 transitions. [2018-10-27 11:27:48,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-27 11:27:48,198 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:27:48,199 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 11:27:48,199 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:27:48,199 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:27:48,199 INFO L82 PathProgramCache]: Analyzing trace with hash 418123736, now seen corresponding path program 1 times [2018-10-27 11:27:48,199 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:27:48,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:27:48,201 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:27:48,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:27:48,202 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:27:48,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:27:48,463 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:27:48,463 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:27:48,464 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 11:27:48,464 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:27:48,464 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 11:27:48,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 11:27:48,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 11:27:48,465 INFO L87 Difference]: Start difference. First operand 5255 states and 8261 transitions. Second operand 6 states. [2018-10-27 11:28:02,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:28:02,687 INFO L93 Difference]: Finished difference Result 13917 states and 22514 transitions. [2018-10-27 11:28:02,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 11:28:02,692 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2018-10-27 11:28:02,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:28:02,737 INFO L225 Difference]: With dead ends: 13917 [2018-10-27 11:28:02,738 INFO L226 Difference]: Without dead ends: 8668 [2018-10-27 11:28:02,758 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 11:28:02,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8668 states. [2018-10-27 11:28:02,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8668 to 8605. [2018-10-27 11:28:02,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8605 states. [2018-10-27 11:28:02,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8605 states to 8605 states and 12803 transitions. [2018-10-27 11:28:02,995 INFO L78 Accepts]: Start accepts. Automaton has 8605 states and 12803 transitions. Word has length 88 [2018-10-27 11:28:02,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:28:02,996 INFO L481 AbstractCegarLoop]: Abstraction has 8605 states and 12803 transitions. [2018-10-27 11:28:02,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 11:28:02,996 INFO L276 IsEmpty]: Start isEmpty. Operand 8605 states and 12803 transitions. [2018-10-27 11:28:03,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-27 11:28:03,001 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:28:03,002 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 11:28:03,002 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:28:03,002 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:28:03,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1382541628, now seen corresponding path program 1 times [2018-10-27 11:28:03,003 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:28:03,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:28:03,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:28:03,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:28:03,004 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:28:03,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:28:03,330 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:28:03,331 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:28:03,331 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 11:28:03,331 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:28:03,331 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 11:28:03,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 11:28:03,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 11:28:03,332 INFO L87 Difference]: Start difference. First operand 8605 states and 12803 transitions. Second operand 5 states. [2018-10-27 11:28:17,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:28:17,155 INFO L93 Difference]: Finished difference Result 25983 states and 40339 transitions. [2018-10-27 11:28:17,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 11:28:17,156 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2018-10-27 11:28:17,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:28:17,228 INFO L225 Difference]: With dead ends: 25983 [2018-10-27 11:28:17,228 INFO L226 Difference]: Without dead ends: 17384 [2018-10-27 11:28:17,257 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 11:28:17,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17384 states. [2018-10-27 11:28:17,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17384 to 17119. [2018-10-27 11:28:17,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17119 states. [2018-10-27 11:28:17,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17119 states to 17119 states and 24326 transitions. [2018-10-27 11:28:17,673 INFO L78 Accepts]: Start accepts. Automaton has 17119 states and 24326 transitions. Word has length 98 [2018-10-27 11:28:17,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:28:17,673 INFO L481 AbstractCegarLoop]: Abstraction has 17119 states and 24326 transitions. [2018-10-27 11:28:17,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 11:28:17,674 INFO L276 IsEmpty]: Start isEmpty. Operand 17119 states and 24326 transitions. [2018-10-27 11:28:17,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-10-27 11:28:17,681 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:28:17,681 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 11:28:17,682 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:28:17,682 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:28:17,682 INFO L82 PathProgramCache]: Analyzing trace with hash -916894984, now seen corresponding path program 1 times [2018-10-27 11:28:17,682 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:28:17,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:28:17,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:28:17,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:28:17,688 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:28:17,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:28:17,814 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:28:17,815 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:28:17,815 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 11:28:17,815 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:28:17,816 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 11:28:17,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 11:28:17,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 11:28:17,816 INFO L87 Difference]: Start difference. First operand 17119 states and 24326 transitions. Second operand 3 states. [2018-10-27 11:28:25,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:28:25,338 INFO L93 Difference]: Finished difference Result 47368 states and 71014 transitions. [2018-10-27 11:28:25,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 11:28:25,341 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 115 [2018-10-27 11:28:25,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:28:25,453 INFO L225 Difference]: With dead ends: 47368 [2018-10-27 11:28:25,454 INFO L226 Difference]: Without dead ends: 30255 [2018-10-27 11:28:25,526 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 11:28:25,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30255 states. [2018-10-27 11:28:26,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30255 to 30253. [2018-10-27 11:28:26,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30253 states. [2018-10-27 11:28:26,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30253 states to 30253 states and 42729 transitions. [2018-10-27 11:28:26,655 INFO L78 Accepts]: Start accepts. Automaton has 30253 states and 42729 transitions. Word has length 115 [2018-10-27 11:28:26,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:28:26,655 INFO L481 AbstractCegarLoop]: Abstraction has 30253 states and 42729 transitions. [2018-10-27 11:28:26,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 11:28:26,656 INFO L276 IsEmpty]: Start isEmpty. Operand 30253 states and 42729 transitions. [2018-10-27 11:28:26,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-27 11:28:26,659 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:28:26,660 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 11:28:26,660 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:28:26,661 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:28:26,661 INFO L82 PathProgramCache]: Analyzing trace with hash 196829947, now seen corresponding path program 1 times [2018-10-27 11:28:26,661 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:28:26,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:28:26,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:28:26,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:28:26,662 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:28:26,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:28:27,204 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:28:27,204 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:28:27,204 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 11:28:27,205 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:28:27,205 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 11:28:27,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 11:28:27,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-27 11:28:27,206 INFO L87 Difference]: Start difference. First operand 30253 states and 42729 transitions. Second operand 6 states. [2018-10-27 11:28:47,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:28:47,105 INFO L93 Difference]: Finished difference Result 98436 states and 150304 transitions. [2018-10-27 11:28:47,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 11:28:47,109 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 156 [2018-10-27 11:28:47,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:28:47,372 INFO L225 Difference]: With dead ends: 98436 [2018-10-27 11:28:47,372 INFO L226 Difference]: Without dead ends: 68189 [2018-10-27 11:28:47,486 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-27 11:28:47,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68189 states. [2018-10-27 11:28:48,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68189 to 68121. [2018-10-27 11:28:48,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68121 states. [2018-10-27 11:28:48,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68121 states to 68121 states and 98142 transitions. [2018-10-27 11:28:48,870 INFO L78 Accepts]: Start accepts. Automaton has 68121 states and 98142 transitions. Word has length 156 [2018-10-27 11:28:48,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:28:48,871 INFO L481 AbstractCegarLoop]: Abstraction has 68121 states and 98142 transitions. [2018-10-27 11:28:48,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 11:28:48,871 INFO L276 IsEmpty]: Start isEmpty. Operand 68121 states and 98142 transitions. [2018-10-27 11:28:48,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-10-27 11:28:48,875 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:28:48,876 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 11:28:48,876 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:28:48,876 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:28:48,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1968456128, now seen corresponding path program 1 times [2018-10-27 11:28:48,877 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:28:48,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:28:48,878 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:28:48,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:28:48,878 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:28:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:28:49,084 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-10-27 11:28:49,084 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:28:49,085 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 11:28:49,085 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:28:49,085 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 11:28:49,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 11:28:49,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 11:28:49,086 INFO L87 Difference]: Start difference. First operand 68121 states and 98142 transitions. Second operand 3 states. [2018-10-27 11:29:01,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:29:01,263 INFO L93 Difference]: Finished difference Result 136244 states and 197301 transitions. [2018-10-27 11:29:01,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 11:29:01,264 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 216 [2018-10-27 11:29:01,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:29:01,473 INFO L225 Difference]: With dead ends: 136244 [2018-10-27 11:29:01,474 INFO L226 Difference]: Without dead ends: 68129 [2018-10-27 11:29:01,657 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 11:29:01,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68129 states. [2018-10-27 11:29:02,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68129 to 68124. [2018-10-27 11:29:02,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68124 states. [2018-10-27 11:29:02,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68124 states to 68124 states and 92387 transitions. [2018-10-27 11:29:02,903 INFO L78 Accepts]: Start accepts. Automaton has 68124 states and 92387 transitions. Word has length 216 [2018-10-27 11:29:02,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:29:02,904 INFO L481 AbstractCegarLoop]: Abstraction has 68124 states and 92387 transitions. [2018-10-27 11:29:02,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 11:29:02,905 INFO L276 IsEmpty]: Start isEmpty. Operand 68124 states and 92387 transitions. [2018-10-27 11:29:02,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-27 11:29:02,912 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:29:02,912 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 11:29:02,912 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:29:02,912 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:29:02,913 INFO L82 PathProgramCache]: Analyzing trace with hash -967021314, now seen corresponding path program 1 times [2018-10-27 11:29:02,913 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:29:02,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:29:02,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:29:02,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:29:02,914 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:29:02,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:29:03,261 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 11:29:03,524 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:29:03,525 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:29:03,525 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 11:29:03,525 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:29:03,526 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 11:29:03,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 11:29:03,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 11:29:03,526 INFO L87 Difference]: Start difference. First operand 68124 states and 92387 transitions. Second operand 6 states. [2018-10-27 11:29:13,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:29:13,832 INFO L93 Difference]: Finished difference Result 176296 states and 264857 transitions. [2018-10-27 11:29:13,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 11:29:13,834 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 224 [2018-10-27 11:29:13,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:29:14,249 INFO L225 Difference]: With dead ends: 176296 [2018-10-27 11:29:14,249 INFO L226 Difference]: Without dead ends: 108178 [2018-10-27 11:29:14,485 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 11:29:14,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108178 states. [2018-10-27 11:29:17,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108178 to 107848. [2018-10-27 11:29:17,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107848 states. [2018-10-27 11:29:17,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107848 states to 107848 states and 147774 transitions. [2018-10-27 11:29:17,535 INFO L78 Accepts]: Start accepts. Automaton has 107848 states and 147774 transitions. Word has length 224 [2018-10-27 11:29:17,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:29:17,536 INFO L481 AbstractCegarLoop]: Abstraction has 107848 states and 147774 transitions. [2018-10-27 11:29:17,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 11:29:17,536 INFO L276 IsEmpty]: Start isEmpty. Operand 107848 states and 147774 transitions. [2018-10-27 11:29:17,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-10-27 11:29:17,546 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:29:17,546 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 11:29:17,547 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:29:17,547 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:29:17,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1811019067, now seen corresponding path program 1 times [2018-10-27 11:29:17,547 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:29:17,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:29:17,548 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:29:17,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:29:17,549 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:29:17,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:29:17,846 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 6 [2018-10-27 11:29:17,883 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2018-10-27 11:29:17,884 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 11:29:17,884 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 11:29:17,885 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 249 with the following transitions: [2018-10-27 11:29:17,887 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2639], [2641], [2644], [2652], [2660], [2668], [2676], [2684], [2692], [2700], [2708], [2716], [2724], [2732], [2740], [2748], [2756], [2764], [2772], [2780], [2788], [2796], [2804], [2812], [2820], [2828], [2836], [2844], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3320], [3321], [3325], [3329], [3333], [3344], [3355], [3358], [3361], [3365], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-27 11:29:17,973 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 11:29:17,973 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 11:29:18,856 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 11:29:18,858 INFO L272 AbstractInterpreter]: Visited 124 different actions 124 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-27 11:29:18,902 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:29:18,902 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 11:29:19,892 INFO L227 lantSequenceWeakener]: Weakened 224 states. On average, predicates are now at 70.85% of their original sizes. [2018-10-27 11:29:19,892 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 11:29:20,428 INFO L415 sIntCurrentIteration]: We unified 247 AI predicates to 247 [2018-10-27 11:29:20,428 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 11:29:20,429 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 11:29:20,429 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [3] total 11 [2018-10-27 11:29:20,430 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:29:20,430 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 11:29:20,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 11:29:20,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-10-27 11:29:20,431 INFO L87 Difference]: Start difference. First operand 107848 states and 147774 transitions. Second operand 10 states. [2018-10-27 11:29:28,288 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-27 11:30:37,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-27 11:30:37,808 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 11:30:37,814 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 11:30:37,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 11:30:37 BoogieIcfgContainer [2018-10-27 11:30:37,815 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 11:30:37,815 INFO L168 Benchmark]: Toolchain (without parser) took 223050.03 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-27 11:30:37,817 INFO L168 Benchmark]: CDTParser took 0.17 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. [2018-10-27 11:30:37,817 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2567.37 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-27 11:30:37,818 INFO L168 Benchmark]: Boogie Procedure Inliner took 627.54 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 827.9 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 73.0 MB. Max. memory is 7.1 GB. [2018-10-27 11:30:37,819 INFO L168 Benchmark]: Boogie Preprocessor took 426.91 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 38.2 MB). Peak memory consumption was 38.2 MB. Max. memory is 7.1 GB. [2018-10-27 11:30:37,820 INFO L168 Benchmark]: RCFGBuilder took 11626.38 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 199.8 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: -16.9 MB). Peak memory consumption was 684.0 MB. Max. memory is 7.1 GB. [2018-10-27 11:30:37,821 INFO L168 Benchmark]: TraceAbstraction took 207796.34 ms. Allocated memory was 2.6 GB in the beginning and 4.2 GB in the end (delta: 1.6 GB). Free memory was 2.2 GB in the beginning and 2.8 GB in the end (delta: -537.7 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-27 11:30:37,826 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 2567.37 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 627.54 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 827.9 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 73.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 426.91 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 38.2 MB). Peak memory consumption was 38.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11626.38 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 199.8 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: -16.9 MB). Peak memory consumption was 684.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 207796.34 ms. Allocated memory was 2.6 GB in the beginning and 4.2 GB in the end (delta: 1.6 GB). Free memory was 2.2 GB in the beginning and 2.8 GB in the end (delta: -537.7 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 33]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 33). Cancelled while BasicCegarLoop was constructing difference of abstraction (107848states) and FLOYD_HOARE automaton (currently 9 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (4988 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 207.7s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 193.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5536 SDtfs, 24935 SDslu, 3831 SDs, 0 SdLazy, 40500 SolverSat, 10999 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 160.7s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 312 GetRequests, 261 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=107848occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.0s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9980850575816252 AbsIntWeakeningRatio, 0.1214574898785425 AbsIntAvgWeakeningVarsNumRemoved, 0.7044534412955465 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 7.8s AutomataMinimizationTime, 8 MinimizatonAttempts, 1740 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 1244 NumberOfCodeBlocks, 1244 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1235 ConstructedInterpolants, 0 QuantifiedInterpolants, 705918 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 275/277 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown