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/Problem19_label58_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 12:44:13,601 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 12:44:13,604 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 12:44:13,617 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 12:44:13,617 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 12:44:13,618 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 12:44:13,620 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 12:44:13,622 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 12:44:13,624 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 12:44:13,625 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 12:44:13,626 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 12:44:13,626 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 12:44:13,627 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 12:44:13,628 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 12:44:13,629 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 12:44:13,630 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 12:44:13,631 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 12:44:13,633 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 12:44:13,635 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 12:44:13,637 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 12:44:13,638 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 12:44:13,640 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 12:44:13,642 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 12:44:13,642 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 12:44:13,643 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 12:44:13,644 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 12:44:13,645 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 12:44:13,646 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 12:44:13,647 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 12:44:13,648 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 12:44:13,648 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 12:44:13,652 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 12:44:13,652 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 12:44:13,653 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 12:44:13,654 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 12:44:13,657 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 12:44:13,657 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 12:44:13,673 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 12:44:13,673 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 12:44:13,674 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 12:44:13,674 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 12:44:13,674 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 12:44:13,675 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 12:44:13,675 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 12:44:13,675 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 12:44:13,675 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 12:44:13,675 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 12:44:13,675 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 12:44:13,676 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 12:44:13,676 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 12:44:13,677 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 12:44:13,677 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 12:44:13,677 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 12:44:13,677 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 12:44:13,677 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 12:44:13,678 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 12:44:13,678 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 12:44:13,678 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 12:44:13,678 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 12:44:13,678 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 12:44:13,679 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 12:44:13,679 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 12:44:13,679 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 12:44:13,679 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 12:44:13,679 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 12:44:13,680 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 12:44:13,680 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 12:44:13,680 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 12:44:13,680 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 12:44:13,680 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 12:44:13,681 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 12:44:13,731 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 12:44:13,746 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 12:44:13,752 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 12:44:13,754 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 12:44:13,754 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 12:44:13,755 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label58_false-unreach-call.c [2018-11-07 12:44:13,824 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c21410cc/c1d6e5f0b3d747dd92916f9642bec685/FLAGdb7cc0dd9 [2018-11-07 12:44:14,695 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 12:44:14,696 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label58_false-unreach-call.c [2018-11-07 12:44:14,749 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c21410cc/c1d6e5f0b3d747dd92916f9642bec685/FLAGdb7cc0dd9 [2018-11-07 12:44:14,768 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c21410cc/c1d6e5f0b3d747dd92916f9642bec685 [2018-11-07 12:44:14,780 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 12:44:14,783 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 12:44:14,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 12:44:14,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 12:44:14,792 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 12:44:14,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:44:14" (1/1) ... [2018-11-07 12:44:14,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@386f4038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:14, skipping insertion in model container [2018-11-07 12:44:14,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:44:14" (1/1) ... [2018-11-07 12:44:14,810 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 12:44:15,095 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 12:44:17,290 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 12:44:17,296 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 12:44:18,533 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 12:44:18,595 INFO L193 MainTranslator]: Completed translation [2018-11-07 12:44:18,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:18 WrapperNode [2018-11-07 12:44:18,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 12:44:18,597 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 12:44:18,597 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 12:44:18,597 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 12:44:18,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:18" (1/1) ... [2018-11-07 12:44:19,125 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:18" (1/1) ... [2018-11-07 12:44:19,136 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 12:44:19,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 12:44:19,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 12:44:19,137 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 12:44:19,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:18" (1/1) ... [2018-11-07 12:44:19,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:18" (1/1) ... [2018-11-07 12:44:19,195 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:18" (1/1) ... [2018-11-07 12:44:19,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:18" (1/1) ... [2018-11-07 12:44:19,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:18" (1/1) ... [2018-11-07 12:44:19,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:18" (1/1) ... [2018-11-07 12:44:19,472 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:18" (1/1) ... [2018-11-07 12:44:19,560 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 12:44:19,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 12:44:19,561 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 12:44:19,561 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 12:44:19,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:18" (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 12:44:19,636 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 12:44:19,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 12:44:19,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 12:44:19,637 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-11-07 12:44:19,637 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-11-07 12:44:19,637 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-11-07 12:44:19,637 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-11-07 12:44:19,638 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 12:44:19,638 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 12:44:19,638 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 12:44:19,638 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 12:44:19,638 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 12:44:19,638 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 12:44:19,639 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 12:44:19,639 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 12:44:19,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 12:44:19,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 12:44:19,640 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 12:44:19,640 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 12:44:35,391 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 12:44:35,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:44:35 BoogieIcfgContainer [2018-11-07 12:44:35,392 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 12:44:35,393 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 12:44:35,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 12:44:35,397 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 12:44:35,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:44:14" (1/3) ... [2018-11-07 12:44:35,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7afecf6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:44:35, skipping insertion in model container [2018-11-07 12:44:35,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:18" (2/3) ... [2018-11-07 12:44:35,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7afecf6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:44:35, skipping insertion in model container [2018-11-07 12:44:35,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:44:35" (3/3) ... [2018-11-07 12:44:35,400 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label58_false-unreach-call.c [2018-11-07 12:44:35,409 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 12:44:35,418 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 12:44:35,433 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 12:44:35,490 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 12:44:35,490 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 12:44:35,490 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 12:44:35,490 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 12:44:35,491 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 12:44:35,491 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 12:44:35,491 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 12:44:35,491 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 12:44:35,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-11-07 12:44:35,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-07 12:44:35,560 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:44:35,561 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] [2018-11-07 12:44:35,563 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:44:35,569 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:44:35,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1840290404, now seen corresponding path program 1 times [2018-11-07 12:44:35,571 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:44:35,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:44:35,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:44:35,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:44:35,628 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:44:35,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:44:36,019 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 12:44:36,022 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:44:36,022 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 12:44:36,022 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:44:36,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 12:44:36,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 12:44:36,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 12:44:36,049 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 4 states. [2018-11-07 12:44:57,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:44:57,047 INFO L93 Difference]: Finished difference Result 6513 states and 12383 transitions. [2018-11-07 12:44:57,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 12:44:57,060 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2018-11-07 12:44:57,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:44:57,124 INFO L225 Difference]: With dead ends: 6513 [2018-11-07 12:44:57,124 INFO L226 Difference]: Without dead ends: 4729 [2018-11-07 12:44:57,144 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 12:44:57,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4729 states. [2018-11-07 12:44:57,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4729 to 4693. [2018-11-07 12:44:57,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4693 states. [2018-11-07 12:44:57,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4693 states to 4693 states and 7735 transitions. [2018-11-07 12:44:57,581 INFO L78 Accepts]: Start accepts. Automaton has 4693 states and 7735 transitions. Word has length 20 [2018-11-07 12:44:57,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:44:57,581 INFO L480 AbstractCegarLoop]: Abstraction has 4693 states and 7735 transitions. [2018-11-07 12:44:57,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 12:44:57,582 INFO L276 IsEmpty]: Start isEmpty. Operand 4693 states and 7735 transitions. [2018-11-07 12:44:57,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-11-07 12:44:57,590 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:44:57,590 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 12:44:57,591 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:44:57,592 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:44:57,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1215912625, now seen corresponding path program 1 times [2018-11-07 12:44:57,593 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:44:57,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:44:57,595 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:44:57,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:44:57,595 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:44:57,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:44:58,009 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 12:44:58,337 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:44:58,338 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:44:58,338 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 12:44:58,338 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:44:58,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 12:44:58,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 12:44:58,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 12:44:58,342 INFO L87 Difference]: Start difference. First operand 4693 states and 7735 transitions. Second operand 6 states. [2018-11-07 12:45:22,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:45:22,363 INFO L93 Difference]: Finished difference Result 17886 states and 30173 transitions. [2018-11-07 12:45:22,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 12:45:22,364 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 92 [2018-11-07 12:45:22,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:45:22,446 INFO L225 Difference]: With dead ends: 17886 [2018-11-07 12:45:22,446 INFO L226 Difference]: Without dead ends: 13199 [2018-11-07 12:45:22,474 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 12:45:22,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13199 states. [2018-11-07 12:45:23,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13199 to 13130. [2018-11-07 12:45:23,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13130 states. [2018-11-07 12:45:23,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13130 states to 13130 states and 19368 transitions. [2018-11-07 12:45:23,030 INFO L78 Accepts]: Start accepts. Automaton has 13130 states and 19368 transitions. Word has length 92 [2018-11-07 12:45:23,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:45:23,032 INFO L480 AbstractCegarLoop]: Abstraction has 13130 states and 19368 transitions. [2018-11-07 12:45:23,032 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 12:45:23,032 INFO L276 IsEmpty]: Start isEmpty. Operand 13130 states and 19368 transitions. [2018-11-07 12:45:23,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-11-07 12:45:23,040 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:45:23,040 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 12:45:23,040 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:45:23,041 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:45:23,041 INFO L82 PathProgramCache]: Analyzing trace with hash 489135727, now seen corresponding path program 1 times [2018-11-07 12:45:23,041 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:45:23,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:45:23,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:45:23,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:45:23,042 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:45:23,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:45:23,252 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:45:23,253 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:45:23,253 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 12:45:23,253 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:45:23,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 12:45:23,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 12:45:23,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 12:45:23,254 INFO L87 Difference]: Start difference. First operand 13130 states and 19368 transitions. Second operand 6 states. [2018-11-07 12:45:38,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:45:38,182 INFO L93 Difference]: Finished difference Result 39933 states and 60297 transitions. [2018-11-07 12:45:38,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 12:45:38,189 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2018-11-07 12:45:38,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:45:38,315 INFO L225 Difference]: With dead ends: 39933 [2018-11-07 12:45:38,316 INFO L226 Difference]: Without dead ends: 26809 [2018-11-07 12:45:38,355 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 12:45:38,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26809 states. [2018-11-07 12:45:38,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26809 to 26540. [2018-11-07 12:45:38,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26540 states. [2018-11-07 12:45:38,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26540 states to 26540 states and 38640 transitions. [2018-11-07 12:45:38,949 INFO L78 Accepts]: Start accepts. Automaton has 26540 states and 38640 transitions. Word has length 102 [2018-11-07 12:45:38,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:45:38,950 INFO L480 AbstractCegarLoop]: Abstraction has 26540 states and 38640 transitions. [2018-11-07 12:45:38,950 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 12:45:38,950 INFO L276 IsEmpty]: Start isEmpty. Operand 26540 states and 38640 transitions. [2018-11-07 12:45:38,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-11-07 12:45:38,961 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:45:38,962 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 12:45:38,962 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:45:38,962 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:45:38,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1440473089, now seen corresponding path program 1 times [2018-11-07 12:45:38,963 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:45:38,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:45:38,967 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:45:38,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:45:38,968 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:45:39,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:45:39,285 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 12:45:39,668 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:45:39,668 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:45:39,669 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 12:45:39,669 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:45:39,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 12:45:39,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 12:45:39,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 12:45:39,672 INFO L87 Difference]: Start difference. First operand 26540 states and 38640 transitions. Second operand 6 states. [2018-11-07 12:45:58,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:45:58,499 INFO L93 Difference]: Finished difference Result 70544 states and 106710 transitions. [2018-11-07 12:45:58,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 12:45:58,507 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2018-11-07 12:45:58,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:45:58,669 INFO L225 Difference]: With dead ends: 70544 [2018-11-07 12:45:58,669 INFO L226 Difference]: Without dead ends: 44010 [2018-11-07 12:45:58,759 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 12:45:58,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44010 states. [2018-11-07 12:45:59,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44010 to 43859. [2018-11-07 12:45:59,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43859 states. [2018-11-07 12:45:59,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43859 states to 43859 states and 61094 transitions. [2018-11-07 12:45:59,926 INFO L78 Accepts]: Start accepts. Automaton has 43859 states and 61094 transitions. Word has length 135 [2018-11-07 12:45:59,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:45:59,927 INFO L480 AbstractCegarLoop]: Abstraction has 43859 states and 61094 transitions. [2018-11-07 12:45:59,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 12:45:59,927 INFO L276 IsEmpty]: Start isEmpty. Operand 43859 states and 61094 transitions. [2018-11-07 12:45:59,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-11-07 12:45:59,931 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:45:59,931 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 12:45:59,932 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:45:59,932 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:45:59,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1419206454, now seen corresponding path program 1 times [2018-11-07 12:45:59,932 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:45:59,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:45:59,936 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:45:59,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:45:59,936 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:45:59,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:46:00,182 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 12:46:00,402 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 26 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 12:46:00,402 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 12:46:00,402 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 12:46:00,403 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 172 with the following transitions: [2018-11-07 12:46:00,405 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5286], [5288], [5291], [5299], [5307], [5315], [5323], [5331], [5339], [5347], [5355], [5363], [5371], [5379], [5387], [5395], [5403], [5411], [5419], [5427], [5435], [5443], [5451], [5459], [5467], [5475], [5483], [5491], [5499], [5507], [5515], [5523], [5531], [5539], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5719], [5722], [5726], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5769], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-11-07 12:46:00,468 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 12:46:00,468 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 12:46:00,971 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 12:46:00,973 INFO L272 AbstractInterpreter]: Visited 84 different actions 84 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 12:46:01,014 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:46:01,014 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 12:46:01,537 INFO L227 lantSequenceWeakener]: Weakened 160 states. On average, predicates are now at 74.94% of their original sizes. [2018-11-07 12:46:01,537 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 12:46:01,906 INFO L415 sIntCurrentIteration]: We unified 170 AI predicates to 170 [2018-11-07 12:46:01,906 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 12:46:01,907 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 12:46:01,908 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 12:46:01,908 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:46:01,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 12:46:01,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 12:46:01,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 12:46:01,909 INFO L87 Difference]: Start difference. First operand 43859 states and 61094 transitions. Second operand 7 states. [2018-11-07 12:46:07,802 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown