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/Problem17_label58_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 15:37:28,692 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 15:37:28,696 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 15:37:28,710 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 15:37:28,710 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 15:37:28,711 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 15:37:28,713 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 15:37:28,714 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 15:37:28,716 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 15:37:28,717 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 15:37:28,718 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 15:37:28,718 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 15:37:28,719 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 15:37:28,720 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 15:37:28,721 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 15:37:28,722 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 15:37:28,723 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 15:37:28,725 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 15:37:28,727 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 15:37:28,728 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 15:37:28,730 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 15:37:28,731 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 15:37:28,734 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 15:37:28,734 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 15:37:28,734 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 15:37:28,735 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 15:37:28,736 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 15:37:28,737 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 15:37:28,738 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 15:37:28,741 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 15:37:28,741 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 15:37:28,742 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 15:37:28,742 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 15:37:28,742 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 15:37:28,743 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 15:37:28,743 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 15:37:28,745 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 15:37:28,769 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 15:37:28,769 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 15:37:28,770 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 15:37:28,770 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 15:37:28,770 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 15:37:28,770 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 15:37:28,771 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 15:37:28,771 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 15:37:28,771 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 15:37:28,771 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 15:37:28,771 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 15:37:28,772 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 15:37:28,772 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 15:37:28,772 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 15:37:28,773 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 15:37:28,773 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 15:37:28,773 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 15:37:28,773 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 15:37:28,773 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 15:37:28,774 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 15:37:28,774 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 15:37:28,774 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 15:37:28,774 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 15:37:28,774 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 15:37:28,775 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:37:28,775 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 15:37:28,775 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 15:37:28,775 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 15:37:28,776 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 15:37:28,777 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 15:37:28,777 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 15:37:28,777 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 15:37:28,777 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 15:37:28,778 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 15:37:28,839 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 15:37:28,854 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 15:37:28,859 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 15:37:28,861 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 15:37:28,861 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 15:37:28,862 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label58_true-unreach-call.c [2018-11-07 15:37:28,934 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5848cb4a/13b182ffb25e4adf8c21e8cf61c5b1a6/FLAG00e36cabd [2018-11-07 15:37:29,630 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 15:37:29,631 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label58_true-unreach-call.c [2018-11-07 15:37:29,655 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5848cb4a/13b182ffb25e4adf8c21e8cf61c5b1a6/FLAG00e36cabd [2018-11-07 15:37:29,672 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5848cb4a/13b182ffb25e4adf8c21e8cf61c5b1a6 [2018-11-07 15:37:29,685 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 15:37:29,686 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 15:37:29,688 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 15:37:29,688 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 15:37:29,693 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 15:37:29,694 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:37:29" (1/1) ... [2018-11-07 15:37:29,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37ef60d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:37:29, skipping insertion in model container [2018-11-07 15:37:29,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:37:29" (1/1) ... [2018-11-07 15:37:29,711 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 15:37:29,852 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 15:37:30,988 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:37:30,994 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 15:37:31,353 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:37:31,380 INFO L193 MainTranslator]: Completed translation [2018-11-07 15:37:31,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:37:31 WrapperNode [2018-11-07 15:37:31,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 15:37:31,381 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 15:37:31,382 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 15:37:31,382 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 15:37:31,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:37:31" (1/1) ... [2018-11-07 15:37:31,704 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:37:31" (1/1) ... [2018-11-07 15:37:31,715 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 15:37:31,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 15:37:31,716 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 15:37:31,716 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 15:37:31,728 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:37:31" (1/1) ... [2018-11-07 15:37:31,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:37:31" (1/1) ... [2018-11-07 15:37:31,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:37:31" (1/1) ... [2018-11-07 15:37:31,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:37:31" (1/1) ... [2018-11-07 15:37:31,847 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:37:31" (1/1) ... [2018-11-07 15:37:31,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:37:31" (1/1) ... [2018-11-07 15:37:31,925 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:37:31" (1/1) ... [2018-11-07 15:37:31,959 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 15:37:31,960 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 15:37:31,960 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 15:37:31,960 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 15:37:31,961 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:37:31" (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 15:37:32,031 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 15:37:32,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 15:37:32,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 15:37:32,032 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 15:37:32,032 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 15:37:32,032 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 15:37:32,032 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 15:37:32,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 15:37:32,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 15:37:32,033 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 15:37:32,033 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 15:37:41,279 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 15:37:41,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:37:41 BoogieIcfgContainer [2018-11-07 15:37:41,280 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 15:37:41,281 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 15:37:41,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 15:37:41,284 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 15:37:41,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:37:29" (1/3) ... [2018-11-07 15:37:41,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e0574dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:37:41, skipping insertion in model container [2018-11-07 15:37:41,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:37:31" (2/3) ... [2018-11-07 15:37:41,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e0574dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:37:41, skipping insertion in model container [2018-11-07 15:37:41,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:37:41" (3/3) ... [2018-11-07 15:37:41,288 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label58_true-unreach-call.c [2018-11-07 15:37:41,298 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 15:37:41,308 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 15:37:41,325 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 15:37:41,372 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 15:37:41,372 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 15:37:41,372 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 15:37:41,373 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 15:37:41,373 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 15:37:41,373 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 15:37:41,373 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 15:37:41,373 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 15:37:41,408 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-11-07 15:37:41,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-11-07 15:37:41,418 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:37:41,419 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] [2018-11-07 15:37:41,422 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:37:41,428 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:37:41,428 INFO L82 PathProgramCache]: Analyzing trace with hash -567488676, now seen corresponding path program 1 times [2018-11-07 15:37:41,431 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:37:41,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:37:41,481 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:37:41,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:37:41,482 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:37:41,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:37:42,017 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-11-07 15:37:42,041 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 15:37:42,044 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:37:42,045 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 15:37:42,045 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:37:42,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 15:37:42,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 15:37:42,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:37:42,072 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-11-07 15:37:53,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:37:53,002 INFO L93 Difference]: Finished difference Result 2162 states and 4007 transitions. [2018-11-07 15:37:53,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 15:37:53,008 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2018-11-07 15:37:53,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:37:53,045 INFO L225 Difference]: With dead ends: 2162 [2018-11-07 15:37:53,045 INFO L226 Difference]: Without dead ends: 1552 [2018-11-07 15:37:53,058 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:37:53,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2018-11-07 15:37:53,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1525. [2018-11-07 15:37:53,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1525 states. [2018-11-07 15:37:53,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 2696 transitions. [2018-11-07 15:37:53,222 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 2696 transitions. Word has length 52 [2018-11-07 15:37:53,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:37:53,223 INFO L480 AbstractCegarLoop]: Abstraction has 1525 states and 2696 transitions. [2018-11-07 15:37:53,223 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 15:37:53,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 2696 transitions. [2018-11-07 15:37:53,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-11-07 15:37:53,244 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:37:53,245 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:37:53,245 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:37:53,245 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:37:53,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1938169354, now seen corresponding path program 1 times [2018-11-07 15:37:53,246 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:37:53,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:37:53,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:37:53,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:37:53,248 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:37:53,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:37:53,879 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:37:53,879 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:37:53,880 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:37:53,880 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:37:53,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:37:53,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:37:53,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:37:53,883 INFO L87 Difference]: Start difference. First operand 1525 states and 2696 transitions. Second operand 6 states. [2018-11-07 15:38:05,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:38:05,219 INFO L93 Difference]: Finished difference Result 5786 states and 10670 transitions. [2018-11-07 15:38:05,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:38:05,219 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-11-07 15:38:05,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:38:05,253 INFO L225 Difference]: With dead ends: 5786 [2018-11-07 15:38:05,253 INFO L226 Difference]: Without dead ends: 4267 [2018-11-07 15:38:05,274 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-07 15:38:05,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4267 states. [2018-11-07 15:38:05,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4267 to 4241. [2018-11-07 15:38:05,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4241 states. [2018-11-07 15:38:05,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4241 states to 4241 states and 6348 transitions. [2018-11-07 15:38:05,425 INFO L78 Accepts]: Start accepts. Automaton has 4241 states and 6348 transitions. Word has length 131 [2018-11-07 15:38:05,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:38:05,426 INFO L480 AbstractCegarLoop]: Abstraction has 4241 states and 6348 transitions. [2018-11-07 15:38:05,426 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:38:05,426 INFO L276 IsEmpty]: Start isEmpty. Operand 4241 states and 6348 transitions. [2018-11-07 15:38:05,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-11-07 15:38:05,430 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:38:05,430 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:38:05,430 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:38:05,431 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:38:05,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1881840966, now seen corresponding path program 1 times [2018-11-07 15:38:05,431 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:38:05,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:38:05,432 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:38:05,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:38:05,432 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:38:05,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:38:05,676 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:38:05,676 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:38:05,676 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:38:05,676 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:38:05,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:38:05,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:38:05,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:38:05,678 INFO L87 Difference]: Start difference. First operand 4241 states and 6348 transitions. Second operand 6 states. [2018-11-07 15:38:11,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:38:11,452 INFO L93 Difference]: Finished difference Result 12261 states and 20027 transitions. [2018-11-07 15:38:11,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:38:11,455 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2018-11-07 15:38:11,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:38:11,528 INFO L225 Difference]: With dead ends: 12261 [2018-11-07 15:38:11,528 INFO L226 Difference]: Without dead ends: 8026 [2018-11-07 15:38:11,554 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 15:38:11,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8026 states. [2018-11-07 15:38:11,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8026 to 7941. [2018-11-07 15:38:11,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7941 states. [2018-11-07 15:38:11,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7941 states to 7941 states and 11952 transitions. [2018-11-07 15:38:11,830 INFO L78 Accepts]: Start accepts. Automaton has 7941 states and 11952 transitions. Word has length 132 [2018-11-07 15:38:11,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:38:11,831 INFO L480 AbstractCegarLoop]: Abstraction has 7941 states and 11952 transitions. [2018-11-07 15:38:11,831 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:38:11,831 INFO L276 IsEmpty]: Start isEmpty. Operand 7941 states and 11952 transitions. [2018-11-07 15:38:11,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-11-07 15:38:11,836 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:38:11,837 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, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 15:38:11,837 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:38:11,837 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:38:11,837 INFO L82 PathProgramCache]: Analyzing trace with hash -502912620, now seen corresponding path program 1 times [2018-11-07 15:38:11,838 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:38:11,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:38:11,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:38:11,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:38:11,839 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:38:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:38:12,156 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 91 proven. 5 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-11-07 15:38:12,156 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:38:12,157 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:38:12,158 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 207 with the following transitions: [2018-11-07 15:38:12,160 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1026], [1028], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1239], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 15:38:12,209 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:38:12,209 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:38:12,712 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 15:38:14,315 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 15:38:14,317 INFO L272 AbstractInterpreter]: Visited 87 different actions 248 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 15:38:14,356 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:38:14,357 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 15:38:15,201 INFO L227 lantSequenceWeakener]: Weakened 203 states. On average, predicates are now at 75.67% of their original sizes. [2018-11-07 15:38:15,201 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 15:38:15,568 INFO L415 sIntCurrentIteration]: We unified 205 AI predicates to 205 [2018-11-07 15:38:15,569 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 15:38:15,570 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 15:38:15,570 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-07 15:38:15,570 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:38:15,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 15:38:15,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 15:38:15,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-07 15:38:15,574 INFO L87 Difference]: Start difference. First operand 7941 states and 11952 transitions. Second operand 11 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown