java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label35_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 14:32:13,654 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 14:32:13,656 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 14:32:13,668 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 14:32:13,669 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 14:32:13,670 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 14:32:13,671 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 14:32:13,673 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 14:32:13,675 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 14:32:13,676 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 14:32:13,677 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 14:32:13,677 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 14:32:13,678 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 14:32:13,679 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 14:32:13,681 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 14:32:13,681 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 14:32:13,682 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 14:32:13,684 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 14:32:13,686 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 14:32:13,688 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 14:32:13,692 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 14:32:13,694 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 14:32:13,696 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 14:32:13,696 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 14:32:13,697 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 14:32:13,701 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 14:32:13,702 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 14:32:13,703 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 14:32:13,708 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 14:32:13,711 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 14:32:13,711 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 14:32:13,712 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 14:32:13,712 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 14:32:13,712 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 14:32:13,713 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 14:32:13,714 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 14:32:13,714 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 14:32:13,745 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 14:32:13,746 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 14:32:13,746 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 14:32:13,747 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 14:32:13,747 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 14:32:13,747 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 14:32:13,747 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 14:32:13,748 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 14:32:13,748 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 14:32:13,748 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 14:32:13,748 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 14:32:13,748 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 14:32:13,749 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 14:32:13,749 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 14:32:13,750 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 14:32:13,750 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 14:32:13,750 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 14:32:13,750 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 14:32:13,750 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 14:32:13,751 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 14:32:13,751 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 14:32:13,751 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 14:32:13,751 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 14:32:13,751 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 14:32:13,751 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 14:32:13,753 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 14:32:13,753 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 14:32:13,753 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 14:32:13,754 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 14:32:13,754 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 14:32:13,754 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 14:32:13,754 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 14:32:13,755 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 14:32:13,755 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 14:32:13,818 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 14:32:13,834 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 14:32:13,839 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 14:32:13,840 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 14:32:13,841 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 14:32:13,841 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label35_true-unreach-call.c [2018-11-07 14:32:13,905 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0eb2e08c7/b9b28613cbe94d81b396a305c3750009/FLAG562f80d2d [2018-11-07 14:32:14,512 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 14:32:14,512 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label35_true-unreach-call.c [2018-11-07 14:32:14,526 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0eb2e08c7/b9b28613cbe94d81b396a305c3750009/FLAG562f80d2d [2018-11-07 14:32:14,542 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0eb2e08c7/b9b28613cbe94d81b396a305c3750009 [2018-11-07 14:32:14,553 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 14:32:14,555 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 14:32:14,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 14:32:14,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 14:32:14,560 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 14:32:14,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:32:14" (1/1) ... [2018-11-07 14:32:14,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b29a96e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:32:14, skipping insertion in model container [2018-11-07 14:32:14,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:32:14" (1/1) ... [2018-11-07 14:32:14,574 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 14:32:14,637 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 14:32:15,195 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:32:15,200 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 14:32:15,371 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:32:15,389 INFO L193 MainTranslator]: Completed translation [2018-11-07 14:32:15,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:32:15 WrapperNode [2018-11-07 14:32:15,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 14:32:15,391 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 14:32:15,391 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 14:32:15,391 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 14:32:15,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:32:15" (1/1) ... [2018-11-07 14:32:15,560 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:32:15" (1/1) ... [2018-11-07 14:32:15,577 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 14:32:15,577 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 14:32:15,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 14:32:15,581 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 14:32:15,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:32:15" (1/1) ... [2018-11-07 14:32:15,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:32:15" (1/1) ... [2018-11-07 14:32:15,599 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:32:15" (1/1) ... [2018-11-07 14:32:15,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:32:15" (1/1) ... [2018-11-07 14:32:15,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:32:15" (1/1) ... [2018-11-07 14:32:15,680 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:32:15" (1/1) ... [2018-11-07 14:32:15,695 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:32:15" (1/1) ... [2018-11-07 14:32:15,703 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 14:32:15,703 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 14:32:15,703 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 14:32:15,704 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 14:32:15,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:32:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 14:32:15,767 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 14:32:15,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 14:32:15,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 14:32:15,768 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 14:32:15,768 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 14:32:15,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 14:32:15,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 14:32:15,768 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 14:32:15,768 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 14:32:20,111 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 14:32:20,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:32:20 BoogieIcfgContainer [2018-11-07 14:32:20,112 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 14:32:20,113 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 14:32:20,113 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 14:32:20,117 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 14:32:20,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:32:14" (1/3) ... [2018-11-07 14:32:20,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7506adb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:32:20, skipping insertion in model container [2018-11-07 14:32:20,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:32:15" (2/3) ... [2018-11-07 14:32:20,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7506adb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:32:20, skipping insertion in model container [2018-11-07 14:32:20,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:32:20" (3/3) ... [2018-11-07 14:32:20,120 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label35_true-unreach-call.c [2018-11-07 14:32:20,130 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 14:32:20,140 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 14:32:20,158 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 14:32:20,197 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 14:32:20,197 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 14:32:20,197 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 14:32:20,198 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 14:32:20,198 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 14:32:20,198 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 14:32:20,198 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 14:32:20,199 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 14:32:20,236 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-07 14:32:20,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-11-07 14:32:20,247 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:32:20,248 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:32:20,250 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:32:20,256 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:32:20,257 INFO L82 PathProgramCache]: Analyzing trace with hash 460642553, now seen corresponding path program 1 times [2018-11-07 14:32:20,260 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:32:20,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:32:20,307 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:32:20,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:32:20,307 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:32:20,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:32:20,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:32:20,801 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:32:20,802 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 14:32:20,802 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:32:20,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 14:32:20,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 14:32:20,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:32:20,827 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-11-07 14:32:23,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:32:23,944 INFO L93 Difference]: Finished difference Result 998 states and 1780 transitions. [2018-11-07 14:32:23,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 14:32:23,946 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2018-11-07 14:32:23,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:32:23,969 INFO L225 Difference]: With dead ends: 998 [2018-11-07 14:32:23,969 INFO L226 Difference]: Without dead ends: 699 [2018-11-07 14:32:23,977 INFO L604 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 [2018-11-07 14:32:23,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2018-11-07 14:32:24,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 693. [2018-11-07 14:32:24,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2018-11-07 14:32:24,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1109 transitions. [2018-11-07 14:32:24,083 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1109 transitions. Word has length 65 [2018-11-07 14:32:24,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:32:24,084 INFO L480 AbstractCegarLoop]: Abstraction has 693 states and 1109 transitions. [2018-11-07 14:32:24,084 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 14:32:24,084 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1109 transitions. [2018-11-07 14:32:24,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-11-07 14:32:24,094 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:32:24,094 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 14:32:24,094 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:32:24,095 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:32:24,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1344478420, now seen corresponding path program 1 times [2018-11-07 14:32:24,095 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:32:24,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:32:24,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:32:24,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:32:24,096 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:32:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:32:24,391 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:32:24,391 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:32:24,391 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 14:32:24,392 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:32:24,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 14:32:24,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 14:32:24,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:32:24,395 INFO L87 Difference]: Start difference. First operand 693 states and 1109 transitions. Second operand 4 states. [2018-11-07 14:32:28,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:32:28,219 INFO L93 Difference]: Finished difference Result 2539 states and 4264 transitions. [2018-11-07 14:32:28,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 14:32:28,221 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2018-11-07 14:32:28,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:32:28,238 INFO L225 Difference]: With dead ends: 2539 [2018-11-07 14:32:28,238 INFO L226 Difference]: Without dead ends: 1852 [2018-11-07 14:32:28,245 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:32:28,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1852 states. [2018-11-07 14:32:28,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1852 to 1835. [2018-11-07 14:32:28,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1835 states. [2018-11-07 14:32:28,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1835 states to 1835 states and 2830 transitions. [2018-11-07 14:32:28,332 INFO L78 Accepts]: Start accepts. Automaton has 1835 states and 2830 transitions. Word has length 139 [2018-11-07 14:32:28,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:32:28,333 INFO L480 AbstractCegarLoop]: Abstraction has 1835 states and 2830 transitions. [2018-11-07 14:32:28,333 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 14:32:28,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1835 states and 2830 transitions. [2018-11-07 14:32:28,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-11-07 14:32:28,341 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:32:28,344 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:32:28,344 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:32:28,344 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:32:28,345 INFO L82 PathProgramCache]: Analyzing trace with hash -2061838657, now seen corresponding path program 1 times [2018-11-07 14:32:28,345 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:32:28,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:32:28,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:32:28,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:32:28,347 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:32:28,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:32:28,635 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:32:28,636 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:32:28,636 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:32:28,636 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:32:28,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:32:28,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:32:28,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:32:28,638 INFO L87 Difference]: Start difference. First operand 1835 states and 2830 transitions. Second operand 6 states. [2018-11-07 14:32:32,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:32:32,670 INFO L93 Difference]: Finished difference Result 7366 states and 13552 transitions. [2018-11-07 14:32:32,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 14:32:32,676 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 164 [2018-11-07 14:32:32,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:32:32,746 INFO L225 Difference]: With dead ends: 7366 [2018-11-07 14:32:32,746 INFO L226 Difference]: Without dead ends: 5537 [2018-11-07 14:32:32,809 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 14:32:32,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5537 states. [2018-11-07 14:32:33,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5537 to 4800. [2018-11-07 14:32:33,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4800 states. [2018-11-07 14:32:33,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4800 states to 4800 states and 7128 transitions. [2018-11-07 14:32:33,058 INFO L78 Accepts]: Start accepts. Automaton has 4800 states and 7128 transitions. Word has length 164 [2018-11-07 14:32:33,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:32:33,058 INFO L480 AbstractCegarLoop]: Abstraction has 4800 states and 7128 transitions. [2018-11-07 14:32:33,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:32:33,059 INFO L276 IsEmpty]: Start isEmpty. Operand 4800 states and 7128 transitions. [2018-11-07 14:32:33,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-11-07 14:32:33,079 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:32:33,079 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:32:33,079 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:32:33,080 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:32:33,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1896930166, now seen corresponding path program 1 times [2018-11-07 14:32:33,080 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:32:33,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:32:33,081 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:32:33,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:32:33,081 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:32:33,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:32:33,454 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-11-07 14:32:33,519 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-07 14:32:33,520 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:32:33,520 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 14:32:33,520 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:32:33,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 14:32:33,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 14:32:33,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:32:33,522 INFO L87 Difference]: Start difference. First operand 4800 states and 7128 transitions. Second operand 4 states. [2018-11-07 14:32:36,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:32:36,110 INFO L93 Difference]: Finished difference Result 12919 states and 22071 transitions. [2018-11-07 14:32:36,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 14:32:36,110 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 230 [2018-11-07 14:32:36,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:32:36,172 INFO L225 Difference]: With dead ends: 12919 [2018-11-07 14:32:36,173 INFO L226 Difference]: Without dead ends: 8125 [2018-11-07 14:32:36,231 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:32:36,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8125 states. [2018-11-07 14:32:36,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8125 to 7737. [2018-11-07 14:32:36,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7737 states. [2018-11-07 14:32:36,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7737 states to 7737 states and 11307 transitions. [2018-11-07 14:32:36,508 INFO L78 Accepts]: Start accepts. Automaton has 7737 states and 11307 transitions. Word has length 230 [2018-11-07 14:32:36,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:32:36,509 INFO L480 AbstractCegarLoop]: Abstraction has 7737 states and 11307 transitions. [2018-11-07 14:32:36,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 14:32:36,509 INFO L276 IsEmpty]: Start isEmpty. Operand 7737 states and 11307 transitions. [2018-11-07 14:32:36,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-11-07 14:32:36,532 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:32:36,532 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:32:36,533 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:32:36,533 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:32:36,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1960371396, now seen corresponding path program 1 times [2018-11-07 14:32:36,533 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:32:36,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:32:36,534 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:32:36,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:32:36,535 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:32:36,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:32:36,979 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 116 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 14:32:36,979 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:32:36,979 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 14:32:36,980 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 235 with the following transitions: [2018-11-07 14:32:36,982 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [421], [423], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 14:32:37,031 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 14:32:37,031 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 14:32:37,540 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 14:32:38,563 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 14:32:38,565 INFO L272 AbstractInterpreter]: Visited 100 different actions 100 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-11-07 14:32:38,611 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:32:38,611 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 14:32:40,060 INFO L227 lantSequenceWeakener]: Weakened 225 states. On average, predicates are now at 73.75% of their original sizes. [2018-11-07 14:32:40,060 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 14:32:40,422 INFO L415 sIntCurrentIteration]: We unified 233 AI predicates to 233 [2018-11-07 14:32:40,422 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 14:32:40,423 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 14:32:40,423 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2018-11-07 14:32:40,423 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:32:40,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 14:32:40,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 14:32:40,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 14:32:40,425 INFO L87 Difference]: Start difference. First operand 7737 states and 11307 transitions. Second operand 7 states. Received shutdown request... [2018-11-07 14:36:35,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:36:35,105 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 14:36:35,110 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 14:36:35,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:36:35 BoogieIcfgContainer [2018-11-07 14:36:35,111 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 14:36:35,112 INFO L168 Benchmark]: Toolchain (without parser) took 260558.38 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-11-07 14:36:35,113 INFO L168 Benchmark]: CDTParser took 0.18 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. [2018-11-07 14:36:35,113 INFO L168 Benchmark]: CACSL2BoogieTranslator took 834.81 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-11-07 14:36:35,114 INFO L168 Benchmark]: Boogie Procedure Inliner took 186.49 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 735.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -838.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2018-11-07 14:36:35,123 INFO L168 Benchmark]: Boogie Preprocessor took 125.54 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. [2018-11-07 14:36:35,123 INFO L168 Benchmark]: RCFGBuilder took 4409.07 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: 192.8 MB). Peak memory consumption was 192.8 MB. Max. memory is 7.1 GB. [2018-11-07 14:36:35,124 INFO L168 Benchmark]: TraceAbstraction took 254997.79 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.0 GB in the end (delta: -1.0 GB). Peak memory consumption was 924.2 MB. Max. memory is 7.1 GB. [2018-11-07 14:36:35,130 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 834.81 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 186.49 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 735.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -838.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.54 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 4409.07 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: 192.8 MB). Peak memory consumption was 192.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 254997.79 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.0 GB in the end (delta: -1.0 GB). Peak memory consumption was 924.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 180]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 180). Cancelled while BasicCegarLoop was constructing difference of abstraction (7737states) and FLOYD_HOARE automaton (currently 7 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (10756 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 254.9s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 248.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1246 SDtfs, 2892 SDslu, 759 SDs, 0 SdLazy, 5285 SolverSat, 1490 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 237.2s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 261 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7737occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.6s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9979657752833719 AbsIntWeakeningRatio, 0.12017167381974249 AbsIntAvgWeakeningVarsNumRemoved, 20.613733905579398 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 4 MinimizatonAttempts, 1148 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 832 NumberOfCodeBlocks, 832 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 827 ConstructedInterpolants, 0 QuantifiedInterpolants, 643013 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 428/497 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown