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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label57_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 03:12:48,665 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 03:12:48,667 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 03:12:48,683 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 03:12:48,683 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 03:12:48,684 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 03:12:48,685 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 03:12:48,687 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 03:12:48,689 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 03:12:48,690 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 03:12:48,691 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 03:12:48,691 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 03:12:48,692 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 03:12:48,693 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 03:12:48,694 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 03:12:48,695 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 03:12:48,696 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 03:12:48,698 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 03:12:48,700 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 03:12:48,702 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 03:12:48,703 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 03:12:48,704 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 03:12:48,707 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 03:12:48,707 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 03:12:48,708 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 03:12:48,709 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 03:12:48,710 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 03:12:48,711 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 03:12:48,712 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 03:12:48,713 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 03:12:48,713 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 03:12:48,714 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 03:12:48,714 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 03:12:48,715 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 03:12:48,718 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 03:12:48,719 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 03:12:48,719 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 03:12:48,741 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 03:12:48,742 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 03:12:48,743 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 03:12:48,743 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 03:12:48,743 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 03:12:48,743 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 03:12:48,744 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 03:12:48,744 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 03:12:48,744 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 03:12:48,744 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 03:12:48,744 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 03:12:48,745 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 03:12:48,746 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 03:12:48,746 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 03:12:48,746 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 03:12:48,747 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 03:12:48,747 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 03:12:48,747 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 03:12:48,747 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 03:12:48,748 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 03:12:48,749 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 03:12:48,749 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 03:12:48,749 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 03:12:48,749 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 03:12:48,750 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 03:12:48,750 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 03:12:48,750 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 03:12:48,750 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 03:12:48,751 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 03:12:48,751 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 03:12:48,751 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 03:12:48,751 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 03:12:48,751 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 03:12:48,752 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 03:12:48,805 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 03:12:48,819 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 03:12:48,825 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 03:12:48,826 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 03:12:48,827 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 03:12:48,828 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label57_true-unreach-call.c [2018-11-07 03:12:48,898 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/414de949b/2568a8f5a5c646eb86ff19a1b48f5549/FLAG6042c9400 [2018-11-07 03:12:49,735 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 03:12:49,737 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label57_true-unreach-call.c [2018-11-07 03:12:49,767 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/414de949b/2568a8f5a5c646eb86ff19a1b48f5549/FLAG6042c9400 [2018-11-07 03:12:49,786 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/414de949b/2568a8f5a5c646eb86ff19a1b48f5549 [2018-11-07 03:12:49,800 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 03:12:49,802 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 03:12:49,803 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 03:12:49,803 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 03:12:49,809 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 03:12:49,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:12:49" (1/1) ... [2018-11-07 03:12:49,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f02a909 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:12:49, skipping insertion in model container [2018-11-07 03:12:49,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:12:49" (1/1) ... [2018-11-07 03:12:49,826 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 03:12:49,995 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 03:12:51,290 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:12:51,295 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 03:12:51,909 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:12:51,943 INFO L193 MainTranslator]: Completed translation [2018-11-07 03:12:51,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:12:51 WrapperNode [2018-11-07 03:12:51,944 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 03:12:51,945 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 03:12:51,945 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 03:12:51,945 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 03:12:51,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:12:51" (1/1) ... [2018-11-07 03:12:52,306 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:12:51" (1/1) ... [2018-11-07 03:12:52,317 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 03:12:52,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 03:12:52,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 03:12:52,318 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 03:12:52,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:12:51" (1/1) ... [2018-11-07 03:12:52,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:12:51" (1/1) ... [2018-11-07 03:12:52,353 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:12:51" (1/1) ... [2018-11-07 03:12:52,354 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:12:51" (1/1) ... [2018-11-07 03:12:52,489 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:12:51" (1/1) ... [2018-11-07 03:12:52,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:12:51" (1/1) ... [2018-11-07 03:12:52,576 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:12:51" (1/1) ... [2018-11-07 03:12:52,623 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 03:12:52,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 03:12:52,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 03:12:52,624 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 03:12:52,626 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:12:51" (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 03:12:52,701 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 03:12:52,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 03:12:52,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 03:12:52,701 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 03:12:52,702 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 03:12:52,702 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 03:12:52,702 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 03:12:52,702 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 03:12:52,702 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 03:12:52,704 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 03:12:52,704 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 03:12:52,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 03:12:52,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 03:12:52,706 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 03:12:52,706 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 03:13:01,201 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 03:13:01,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:13:01 BoogieIcfgContainer [2018-11-07 03:13:01,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 03:13:01,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 03:13:01,204 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 03:13:01,207 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 03:13:01,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:12:49" (1/3) ... [2018-11-07 03:13:01,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6401d92f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:13:01, skipping insertion in model container [2018-11-07 03:13:01,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:12:51" (2/3) ... [2018-11-07 03:13:01,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6401d92f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:13:01, skipping insertion in model container [2018-11-07 03:13:01,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:13:01" (3/3) ... [2018-11-07 03:13:01,212 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label57_true-unreach-call.c [2018-11-07 03:13:01,224 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 03:13:01,233 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 03:13:01,250 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 03:13:01,307 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 03:13:01,308 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 03:13:01,308 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 03:13:01,308 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 03:13:01,308 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 03:13:01,308 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 03:13:01,309 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 03:13:01,309 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 03:13:01,354 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-11-07 03:13:01,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-11-07 03:13:01,363 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:13:01,364 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] [2018-11-07 03:13:01,367 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:13:01,372 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:13:01,372 INFO L82 PathProgramCache]: Analyzing trace with hash -937997924, now seen corresponding path program 1 times [2018-11-07 03:13:01,375 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:13:01,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:13:01,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:13:01,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:13:01,436 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:13:01,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:13:01,899 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-11-07 03:13:01,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:13:01,928 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:13:01,929 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 03:13:01,929 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:13:02,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 03:13:02,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 03:13:02,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:13:02,104 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 4 states. [2018-11-07 03:13:14,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:13:14,149 INFO L93 Difference]: Finished difference Result 3234 states and 6255 transitions. [2018-11-07 03:13:14,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 03:13:14,154 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2018-11-07 03:13:14,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:13:14,202 INFO L225 Difference]: With dead ends: 3234 [2018-11-07 03:13:14,202 INFO L226 Difference]: Without dead ends: 2388 [2018-11-07 03:13:14,214 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 03:13:14,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2018-11-07 03:13:14,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 2388. [2018-11-07 03:13:14,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2388 states. [2018-11-07 03:13:14,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2388 states to 2388 states and 4022 transitions. [2018-11-07 03:13:14,437 INFO L78 Accepts]: Start accepts. Automaton has 2388 states and 4022 transitions. Word has length 44 [2018-11-07 03:13:14,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:13:14,438 INFO L480 AbstractCegarLoop]: Abstraction has 2388 states and 4022 transitions. [2018-11-07 03:13:14,438 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 03:13:14,438 INFO L276 IsEmpty]: Start isEmpty. Operand 2388 states and 4022 transitions. [2018-11-07 03:13:14,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-11-07 03:13:14,449 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:13:14,451 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:13:14,451 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:13:14,451 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:13:14,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1418156750, now seen corresponding path program 1 times [2018-11-07 03:13:14,452 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:13:14,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:13:14,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:13:14,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:13:14,454 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:13:14,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:13:15,112 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:13:15,112 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:13:15,112 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 03:13:15,112 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:13:15,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:13:15,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:13:15,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:13:15,116 INFO L87 Difference]: Start difference. First operand 2388 states and 4022 transitions. Second operand 6 states. [2018-11-07 03:13:28,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:13:28,193 INFO L93 Difference]: Finished difference Result 9453 states and 16261 transitions. [2018-11-07 03:13:28,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:13:28,202 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2018-11-07 03:13:28,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:13:28,251 INFO L225 Difference]: With dead ends: 9453 [2018-11-07 03:13:28,251 INFO L226 Difference]: Without dead ends: 7071 [2018-11-07 03:13:28,266 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 03:13:28,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7071 states. [2018-11-07 03:13:28,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7071 to 7023. [2018-11-07 03:13:28,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7023 states. [2018-11-07 03:13:28,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7023 states to 7023 states and 10536 transitions. [2018-11-07 03:13:28,492 INFO L78 Accepts]: Start accepts. Automaton has 7023 states and 10536 transitions. Word has length 144 [2018-11-07 03:13:28,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:13:28,492 INFO L480 AbstractCegarLoop]: Abstraction has 7023 states and 10536 transitions. [2018-11-07 03:13:28,493 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:13:28,493 INFO L276 IsEmpty]: Start isEmpty. Operand 7023 states and 10536 transitions. [2018-11-07 03:13:28,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-11-07 03:13:28,512 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:13:28,512 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 03:13:28,512 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:13:28,517 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:13:28,517 INFO L82 PathProgramCache]: Analyzing trace with hash -455141647, now seen corresponding path program 1 times [2018-11-07 03:13:28,517 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:13:28,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:13:28,519 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:13:28,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:13:28,519 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:13:28,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:13:28,748 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 74 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 03:13:28,749 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:13:28,749 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:13:28,750 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 198 with the following transitions: [2018-11-07 03:13:28,752 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2119], [2121], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2368], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2404], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 03:13:28,824 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:13:28,824 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:13:31,109 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:13:31,111 INFO L272 AbstractInterpreter]: Visited 86 different actions 86 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 03:13:31,122 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:13:31,122 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:13:33,190 INFO L227 lantSequenceWeakener]: Weakened 189 states. On average, predicates are now at 75.61% of their original sizes. [2018-11-07 03:13:33,191 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:13:33,646 INFO L415 sIntCurrentIteration]: We unified 196 AI predicates to 196 [2018-11-07 03:13:33,647 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:13:33,648 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:13:33,648 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2018-11-07 03:13:33,648 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:13:33,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 03:13:33,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 03:13:33,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 03:13:33,650 INFO L87 Difference]: Start difference. First operand 7023 states and 10536 transitions. Second operand 8 states. [2018-11-07 03:13:38,914 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