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/Problem15_label11_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 03:32:28,743 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 03:32:28,749 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 03:32:28,762 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 03:32:28,763 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 03:32:28,764 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 03:32:28,765 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 03:32:28,767 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 03:32:28,769 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 03:32:28,769 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 03:32:28,770 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 03:32:28,771 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 03:32:28,772 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 03:32:28,773 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 03:32:28,774 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 03:32:28,775 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 03:32:28,775 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 03:32:28,777 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 03:32:28,779 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 03:32:28,781 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 03:32:28,782 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 03:32:28,783 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 03:32:28,786 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 03:32:28,793 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 03:32:28,794 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 03:32:28,795 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 03:32:28,795 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 03:32:28,796 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 03:32:28,826 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 03:32:28,826 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 03:32:28,827 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 03:32:28,828 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 03:32:28,828 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 03:32:28,828 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 03:32:28,828 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 03:32:28,828 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 03:32:28,829 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 03:32:28,829 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 03:32:28,829 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 03:32:28,829 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 03:32:28,830 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 03:32:28,830 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 03:32:28,830 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 03:32:28,831 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 03:32:28,831 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 03:32:28,831 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 03:32:28,831 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 03:32:28,831 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 03:32:28,832 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 03:32:28,832 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 03:32:28,832 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 03:32:28,832 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 03:32:28,832 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 03:32:28,834 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 03:32:28,834 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 03:32:28,834 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 03:32:28,834 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 03:32:28,835 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 03:32:28,835 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 03:32:28,835 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 03:32:28,835 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 03:32:28,835 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 03:32:28,883 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 03:32:28,896 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 03:32:28,899 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 03:32:28,901 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 03:32:28,901 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 03:32:28,902 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label11_true-unreach-call.c [2018-11-07 03:32:28,962 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68ccfbc56/d18da31637294dccad12e50befb8b1e6/FLAG8a790bd48 [2018-11-07 03:32:29,654 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 03:32:29,655 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label11_true-unreach-call.c [2018-11-07 03:32:29,674 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68ccfbc56/d18da31637294dccad12e50befb8b1e6/FLAG8a790bd48 [2018-11-07 03:32:29,690 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68ccfbc56/d18da31637294dccad12e50befb8b1e6 [2018-11-07 03:32:29,702 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 03:32:29,703 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 03:32:29,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 03:32:29,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 03:32:29,708 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 03:32:29,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:32:29" (1/1) ... [2018-11-07 03:32:29,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@193d11b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:32:29, skipping insertion in model container [2018-11-07 03:32:29,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:32:29" (1/1) ... [2018-11-07 03:32:29,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 03:32:29,816 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 03:32:30,683 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:32:30,689 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 03:32:30,998 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:32:31,022 INFO L193 MainTranslator]: Completed translation [2018-11-07 03:32:31,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:32:31 WrapperNode [2018-11-07 03:32:31,023 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 03:32:31,025 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 03:32:31,025 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 03:32:31,025 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 03:32:31,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:32:31" (1/1) ... [2018-11-07 03:32:31,253 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:32:31" (1/1) ... [2018-11-07 03:32:31,271 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 03:32:31,272 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 03:32:31,272 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 03:32:31,272 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 03:32:31,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:32:31" (1/1) ... [2018-11-07 03:32:31,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:32:31" (1/1) ... [2018-11-07 03:32:31,294 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:32:31" (1/1) ... [2018-11-07 03:32:31,296 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:32:31" (1/1) ... [2018-11-07 03:32:31,365 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:32:31" (1/1) ... [2018-11-07 03:32:31,397 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:32:31" (1/1) ... [2018-11-07 03:32:31,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:32:31" (1/1) ... [2018-11-07 03:32:31,440 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 03:32:31,441 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 03:32:31,441 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 03:32:31,441 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 03:32:31,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:32:31" (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 03:32:31,513 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 03:32:31,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 03:32:31,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 03:32:31,513 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 03:32:31,514 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 03:32:31,514 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 03:32:31,514 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 03:32:31,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 03:32:31,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 03:32:31,515 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 03:32:31,515 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 03:32:38,289 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 03:32:38,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:32:38 BoogieIcfgContainer [2018-11-07 03:32:38,290 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 03:32:38,291 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 03:32:38,292 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 03:32:38,297 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 03:32:38,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:32:29" (1/3) ... [2018-11-07 03:32:38,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7980d407 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:32:38, skipping insertion in model container [2018-11-07 03:32:38,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:32:31" (2/3) ... [2018-11-07 03:32:38,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7980d407 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:32:38, skipping insertion in model container [2018-11-07 03:32:38,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:32:38" (3/3) ... [2018-11-07 03:32:38,303 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label11_true-unreach-call.c [2018-11-07 03:32:38,312 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 03:32:38,320 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 03:32:38,337 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 03:32:38,378 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 03:32:38,378 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 03:32:38,378 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 03:32:38,378 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 03:32:38,379 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 03:32:38,379 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 03:32:38,379 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 03:32:38,379 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 03:32:38,413 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-07 03:32:38,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-11-07 03:32:38,424 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:32:38,425 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:32:38,428 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:32:38,434 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:32:38,435 INFO L82 PathProgramCache]: Analyzing trace with hash -383317628, now seen corresponding path program 1 times [2018-11-07 03:32:38,438 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:32:38,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:32:38,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:32:38,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:32:38,498 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:32:38,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:32:39,010 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-11-07 03:32:39,107 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 03:32:39,112 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:32:39,116 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 03:32:39,116 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:32:39,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 03:32:39,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 03:32:39,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:32:39,152 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-11-07 03:32:45,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:32:45,311 INFO L93 Difference]: Finished difference Result 1558 states and 2849 transitions. [2018-11-07 03:32:45,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 03:32:45,315 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2018-11-07 03:32:45,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:32:45,342 INFO L225 Difference]: With dead ends: 1558 [2018-11-07 03:32:45,342 INFO L226 Difference]: Without dead ends: 1114 [2018-11-07 03:32:45,351 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 03:32:45,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2018-11-07 03:32:45,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 759. [2018-11-07 03:32:45,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 759 states. [2018-11-07 03:32:45,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1355 transitions. [2018-11-07 03:32:45,471 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1355 transitions. Word has length 62 [2018-11-07 03:32:45,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:32:45,472 INFO L480 AbstractCegarLoop]: Abstraction has 759 states and 1355 transitions. [2018-11-07 03:32:45,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 03:32:45,472 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1355 transitions. [2018-11-07 03:32:45,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-11-07 03:32:45,481 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:32:45,482 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 03:32:45,482 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:32:45,482 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:32:45,482 INFO L82 PathProgramCache]: Analyzing trace with hash -679699185, now seen corresponding path program 1 times [2018-11-07 03:32:45,483 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:32:45,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:32:45,484 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:32:45,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:32:45,484 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:32:45,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:32:45,775 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:32:45,776 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:32:45,776 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 03:32:45,776 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:32:45,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 03:32:45,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 03:32:45,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:32:45,779 INFO L87 Difference]: Start difference. First operand 759 states and 1355 transitions. Second operand 4 states. [2018-11-07 03:32:50,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:32:50,730 INFO L93 Difference]: Finished difference Result 2755 states and 5131 transitions. [2018-11-07 03:32:50,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 03:32:50,741 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2018-11-07 03:32:50,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:32:50,759 INFO L225 Difference]: With dead ends: 2755 [2018-11-07 03:32:50,760 INFO L226 Difference]: Without dead ends: 2002 [2018-11-07 03:32:50,769 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:32:50,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2002 states. [2018-11-07 03:32:50,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2002 to 1999. [2018-11-07 03:32:50,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1999 states. [2018-11-07 03:32:50,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1999 states to 1999 states and 3228 transitions. [2018-11-07 03:32:50,871 INFO L78 Accepts]: Start accepts. Automaton has 1999 states and 3228 transitions. Word has length 132 [2018-11-07 03:32:50,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:32:50,872 INFO L480 AbstractCegarLoop]: Abstraction has 1999 states and 3228 transitions. [2018-11-07 03:32:50,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 03:32:50,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1999 states and 3228 transitions. [2018-11-07 03:32:50,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-11-07 03:32:50,880 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:32:50,881 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:32:50,881 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:32:50,881 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:32:50,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1833978789, now seen corresponding path program 1 times [2018-11-07 03:32:50,882 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:32:50,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:32:50,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:32:50,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:32:50,883 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:32:50,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:32:51,205 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:32:51,205 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:32:51,205 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 03:32:51,205 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:32:51,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 03:32:51,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 03:32:51,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 03:32:51,207 INFO L87 Difference]: Start difference. First operand 1999 states and 3228 transitions. Second operand 5 states. [2018-11-07 03:32:57,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:32:57,394 INFO L93 Difference]: Finished difference Result 6002 states and 9890 transitions. [2018-11-07 03:32:57,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 03:32:57,398 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2018-11-07 03:32:57,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:32:57,433 INFO L225 Difference]: With dead ends: 6002 [2018-11-07 03:32:57,433 INFO L226 Difference]: Without dead ends: 4009 [2018-11-07 03:32:57,446 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 03:32:57,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4009 states. [2018-11-07 03:32:57,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4009 to 3952. [2018-11-07 03:32:57,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3952 states. [2018-11-07 03:32:57,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3952 states to 3952 states and 5722 transitions. [2018-11-07 03:32:57,601 INFO L78 Accepts]: Start accepts. Automaton has 3952 states and 5722 transitions. Word has length 179 [2018-11-07 03:32:57,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:32:57,601 INFO L480 AbstractCegarLoop]: Abstraction has 3952 states and 5722 transitions. [2018-11-07 03:32:57,601 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 03:32:57,602 INFO L276 IsEmpty]: Start isEmpty. Operand 3952 states and 5722 transitions. [2018-11-07 03:32:57,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2018-11-07 03:32:57,628 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:32:57,628 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:32:57,629 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:32:57,629 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:32:57,629 INFO L82 PathProgramCache]: Analyzing trace with hash 2147437264, now seen corresponding path program 1 times [2018-11-07 03:32:57,629 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:32:57,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:32:57,631 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:32:57,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:32:57,631 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:32:57,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:32:58,686 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 22 [2018-11-07 03:32:58,963 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2018-11-07 03:32:59,346 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 324 proven. 78 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-11-07 03:32:59,347 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:32:59,347 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:32:59,348 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 444 with the following transitions: [2018-11-07 03:32:59,351 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [469], [471], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [710], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 03:32:59,462 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:32:59,463 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:33:04,706 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:33:05,118 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:33:05,119 INFO L272 AbstractInterpreter]: Visited 207 different actions 207 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 03:33:05,130 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:33:05,130 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:33:09,230 INFO L227 lantSequenceWeakener]: Weakened 432 states. On average, predicates are now at 77.8% of their original sizes. [2018-11-07 03:33:09,230 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:33:09,878 INFO L415 sIntCurrentIteration]: We unified 442 AI predicates to 442 [2018-11-07 03:33:09,878 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:33:09,879 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:33:09,879 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2018-11-07 03:33:09,879 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:33:09,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 03:33:09,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 03:33:09,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 03:33:09,881 INFO L87 Difference]: Start difference. First operand 3952 states and 5722 transitions. Second operand 8 states. [2018-11-07 03:34:49,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:34:49,186 INFO L93 Difference]: Finished difference Result 8208 states and 11776 transitions. [2018-11-07 03:34:49,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 03:34:49,186 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 443 [2018-11-07 03:34:49,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:34:49,210 INFO L225 Difference]: With dead ends: 8208 [2018-11-07 03:34:49,210 INFO L226 Difference]: Without dead ends: 4262 [2018-11-07 03:34:49,227 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 444 GetRequests, 436 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 03:34:49,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4262 states. [2018-11-07 03:34:49,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4262 to 4260. [2018-11-07 03:34:49,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4260 states. [2018-11-07 03:34:49,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4260 states to 4260 states and 6039 transitions. [2018-11-07 03:34:49,346 INFO L78 Accepts]: Start accepts. Automaton has 4260 states and 6039 transitions. Word has length 443 [2018-11-07 03:34:49,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:34:49,347 INFO L480 AbstractCegarLoop]: Abstraction has 4260 states and 6039 transitions. [2018-11-07 03:34:49,347 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 03:34:49,347 INFO L276 IsEmpty]: Start isEmpty. Operand 4260 states and 6039 transitions. [2018-11-07 03:34:49,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2018-11-07 03:34:49,369 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:34:49,370 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:34:49,370 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:34:49,370 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:34:49,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1235760953, now seen corresponding path program 1 times [2018-11-07 03:34:49,371 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:34:49,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:34:49,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:34:49,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:34:49,373 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:34:49,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:34:50,276 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 249 proven. 80 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-11-07 03:34:50,277 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:34:50,277 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:34:50,278 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 518 with the following transitions: [2018-11-07 03:34:50,279 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [469], [471], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [710], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 03:34:50,290 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:34:50,290 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:34:55,559 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:35:15,453 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:35:15,453 INFO L272 AbstractInterpreter]: Visited 284 different actions 840 times. Merged at 5 different actions 10 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 03:35:15,463 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:35:15,463 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:35:21,577 INFO L227 lantSequenceWeakener]: Weakened 29 states. On average, predicates are now at 78.21% of their original sizes. [2018-11-07 03:35:21,577 INFO L413 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-11-07 03:36:11,756 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 03:36:11,761 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 03:36:11,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 03:36:11 BoogieIcfgContainer [2018-11-07 03:36:11,762 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 03:36:11,763 INFO L168 Benchmark]: Toolchain (without parser) took 222060.33 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 236.6 MB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. [2018-11-07 03:36:11,764 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 03:36:11,764 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1320.07 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2018-11-07 03:36:11,768 INFO L168 Benchmark]: Boogie Procedure Inliner took 246.95 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 756.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -902.1 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. [2018-11-07 03:36:11,769 INFO L168 Benchmark]: Boogie Preprocessor took 168.12 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2018-11-07 03:36:11,773 INFO L168 Benchmark]: RCFGBuilder took 6850.01 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 302.0 MB). Peak memory consumption was 302.0 MB. Max. memory is 7.1 GB. [2018-11-07 03:36:11,774 INFO L168 Benchmark]: TraceAbstraction took 213470.34 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 1.2 GB in the end (delta: 717.0 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-11-07 03:36:11,785 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1320.07 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 246.95 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 756.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -902.1 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 168.12 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6850.01 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 302.0 MB). Peak memory consumption was 302.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 213470.34 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 1.2 GB in the end (delta: 717.0 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 172]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 172). Cancelled while BasicCegarLoop was analyzing trace of length 518 with TraceHistMax 4,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 19 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 213.3s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 116.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1003 SDtfs, 3414 SDslu, 1075 SDs, 0 SdLazy, 6810 SolverSat, 1631 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 83.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 464 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4260occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 30.9s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9972712625941725 AbsIntWeakeningRatio, 0.06680584551148225 AbsIntAvgWeakeningVarsNumRemoved, 538.919624217119 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 417 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 816 NumberOfCodeBlocks, 816 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 812 ConstructedInterpolants, 0 QuantifiedInterpolants, 1714090 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 458/536 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown