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/Problem14_label23_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 03:26:12,867 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 03:26:12,869 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 03:26:12,881 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 03:26:12,882 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 03:26:12,883 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 03:26:12,884 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 03:26:12,886 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 03:26:12,887 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 03:26:12,888 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 03:26:12,889 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 03:26:12,889 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 03:26:12,890 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 03:26:12,891 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 03:26:12,892 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 03:26:12,893 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 03:26:12,894 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 03:26:12,896 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 03:26:12,897 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 03:26:12,899 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 03:26:12,900 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 03:26:12,901 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 03:26:12,904 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 03:26:12,904 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 03:26:12,904 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 03:26:12,905 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 03:26:12,906 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 03:26:12,907 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 03:26:12,908 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 03:26:12,909 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 03:26:12,909 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 03:26:12,910 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-07 03:26:12,912 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 03:26:12,927 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 03:26:12,927 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 03:26:12,928 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 03:26:12,928 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 03:26:12,929 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 03:26:12,929 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 03:26:12,929 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 03:26:12,929 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 03:26:12,929 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 03:26:12,930 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 03:26:12,930 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 03:26:12,930 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 03:26:12,931 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 03:26:12,931 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 03:26:12,931 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 03:26:12,931 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 03:26:12,931 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 03:26:12,932 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 03:26:12,932 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 03:26:12,932 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 03:26:12,932 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 03:26:12,932 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 03:26:12,933 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 03:26:12,933 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 03:26:12,933 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 03:26:12,933 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 03:26:12,933 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 03:26:12,934 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 03:26:12,934 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 03:26:12,934 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 03:26:12,934 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 03:26:12,934 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 03:26:12,935 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 03:26:12,935 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 03:26:12,978 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 03:26:12,991 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 03:26:12,994 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 03:26:12,996 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 03:26:12,996 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 03:26:12,997 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label23_true-unreach-call_false-termination.c [2018-11-07 03:26:13,055 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69d3c92fb/025e109630114d88a1cb78400761124f/FLAGeab364ab8 [2018-11-07 03:26:13,705 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 03:26:13,706 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label23_true-unreach-call_false-termination.c [2018-11-07 03:26:13,734 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69d3c92fb/025e109630114d88a1cb78400761124f/FLAGeab364ab8 [2018-11-07 03:26:13,756 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69d3c92fb/025e109630114d88a1cb78400761124f [2018-11-07 03:26:13,768 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 03:26:13,770 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 03:26:13,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 03:26:13,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 03:26:13,775 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 03:26:13,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:26:13" (1/1) ... [2018-11-07 03:26:13,780 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1da72689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:13, skipping insertion in model container [2018-11-07 03:26:13,780 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:26:13" (1/1) ... [2018-11-07 03:26:13,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 03:26:13,853 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 03:26:14,336 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:26:14,341 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 03:26:14,486 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:26:14,508 INFO L193 MainTranslator]: Completed translation [2018-11-07 03:26:14,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:14 WrapperNode [2018-11-07 03:26:14,509 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 03:26:14,510 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 03:26:14,511 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 03:26:14,511 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 03:26:14,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:14" (1/1) ... [2018-11-07 03:26:14,564 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:14" (1/1) ... [2018-11-07 03:26:14,673 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 03:26:14,673 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 03:26:14,674 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 03:26:14,674 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 03:26:14,687 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:14" (1/1) ... [2018-11-07 03:26:14,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:14" (1/1) ... [2018-11-07 03:26:14,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:14" (1/1) ... [2018-11-07 03:26:14,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:14" (1/1) ... [2018-11-07 03:26:14,768 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:14" (1/1) ... [2018-11-07 03:26:14,793 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:14" (1/1) ... [2018-11-07 03:26:14,798 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:14" (1/1) ... [2018-11-07 03:26:14,808 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 03:26:14,809 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 03:26:14,809 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 03:26:14,809 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 03:26:14,810 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:14" (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 03:26:14,880 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 03:26:14,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 03:26:14,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 03:26:14,881 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 03:26:14,881 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 03:26:14,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 03:26:14,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 03:26:14,882 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 03:26:14,882 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 03:26:18,466 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 03:26:18,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:26:18 BoogieIcfgContainer [2018-11-07 03:26:18,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 03:26:18,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 03:26:18,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 03:26:18,472 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 03:26:18,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:26:13" (1/3) ... [2018-11-07 03:26:18,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f61d93e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:26:18, skipping insertion in model container [2018-11-07 03:26:18,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:26:14" (2/3) ... [2018-11-07 03:26:18,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f61d93e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:26:18, skipping insertion in model container [2018-11-07 03:26:18,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:26:18" (3/3) ... [2018-11-07 03:26:18,476 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label23_true-unreach-call_false-termination.c [2018-11-07 03:26:18,484 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 03:26:18,493 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 03:26:18,508 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 03:26:18,545 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 03:26:18,545 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 03:26:18,546 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 03:26:18,546 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 03:26:18,546 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 03:26:18,547 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 03:26:18,547 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 03:26:18,547 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 03:26:18,579 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-07 03:26:18,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-07 03:26:18,587 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:26:18,588 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] [2018-11-07 03:26:18,591 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:26:18,597 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:26:18,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1395557711, now seen corresponding path program 1 times [2018-11-07 03:26:18,599 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:26:18,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:26:18,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:26:18,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:26:18,650 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:26:18,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:26:19,053 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 03:26:19,056 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:26:19,057 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 03:26:19,057 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:26:19,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 03:26:19,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 03:26:19,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 03:26:19,082 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-11-07 03:26:21,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:26:21,153 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-11-07 03:26:21,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 03:26:21,158 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2018-11-07 03:26:21,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:26:21,178 INFO L225 Difference]: With dead ends: 691 [2018-11-07 03:26:21,178 INFO L226 Difference]: Without dead ends: 434 [2018-11-07 03:26:21,187 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 03:26:21,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-11-07 03:26:21,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-11-07 03:26:21,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-11-07 03:26:21,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-11-07 03:26:21,273 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 39 [2018-11-07 03:26:21,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:26:21,274 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-11-07 03:26:21,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 03:26:21,275 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-11-07 03:26:21,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-11-07 03:26:21,281 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:26:21,282 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:26:21,282 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:26:21,283 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:26:21,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1621257519, now seen corresponding path program 1 times [2018-11-07 03:26:21,283 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:26:21,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:26:21,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:26:21,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:26:21,285 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:26:21,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:26:21,579 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:26:21,579 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:26:21,580 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 03:26:21,580 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:26:21,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:26:21,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:26:21,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:26:21,583 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-11-07 03:26:23,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:26:23,629 INFO L93 Difference]: Finished difference Result 1062 states and 1897 transitions. [2018-11-07 03:26:23,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:26:23,630 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2018-11-07 03:26:23,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:26:23,636 INFO L225 Difference]: With dead ends: 1062 [2018-11-07 03:26:23,636 INFO L226 Difference]: Without dead ends: 634 [2018-11-07 03:26:23,639 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 03:26:23,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2018-11-07 03:26:23,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 625. [2018-11-07 03:26:23,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2018-11-07 03:26:23,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1019 transitions. [2018-11-07 03:26:23,683 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1019 transitions. Word has length 114 [2018-11-07 03:26:23,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:26:23,684 INFO L480 AbstractCegarLoop]: Abstraction has 625 states and 1019 transitions. [2018-11-07 03:26:23,684 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:26:23,684 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1019 transitions. [2018-11-07 03:26:23,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-11-07 03:26:23,687 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:26:23,689 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:26:23,689 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:26:23,689 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:26:23,690 INFO L82 PathProgramCache]: Analyzing trace with hash -985362584, now seen corresponding path program 1 times [2018-11-07 03:26:23,690 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:26:23,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:26:23,691 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:26:23,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:26:23,691 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:26:23,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:26:24,233 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:26:24,233 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:26:24,234 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 03:26:24,234 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:26:24,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:26:24,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:26:24,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:26:24,236 INFO L87 Difference]: Start difference. First operand 625 states and 1019 transitions. Second operand 6 states. [2018-11-07 03:26:29,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:26:29,195 INFO L93 Difference]: Finished difference Result 1812 states and 2965 transitions. [2018-11-07 03:26:29,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 03:26:29,197 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2018-11-07 03:26:29,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:26:29,206 INFO L225 Difference]: With dead ends: 1812 [2018-11-07 03:26:29,206 INFO L226 Difference]: Without dead ends: 1193 [2018-11-07 03:26:29,213 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-11-07 03:26:29,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1193 states. [2018-11-07 03:26:29,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1193 to 1138. [2018-11-07 03:26:29,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1138 states. [2018-11-07 03:26:29,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1729 transitions. [2018-11-07 03:26:29,264 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 1729 transitions. Word has length 123 [2018-11-07 03:26:29,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:26:29,265 INFO L480 AbstractCegarLoop]: Abstraction has 1138 states and 1729 transitions. [2018-11-07 03:26:29,265 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:26:29,265 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 1729 transitions. [2018-11-07 03:26:29,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-11-07 03:26:29,279 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:26:29,279 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, 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] [2018-11-07 03:26:29,282 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:26:29,282 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:26:29,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1921964902, now seen corresponding path program 1 times [2018-11-07 03:26:29,283 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:26:29,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:26:29,284 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:26:29,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:26:29,284 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:26:29,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:26:29,827 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 03:26:30,008 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 03:26:30,214 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 03:26:30,661 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 146 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:26:30,661 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:26:30,661 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:26:30,662 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 209 with the following transitions: [2018-11-07 03:26:30,664 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [554], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 03:26:30,739 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:26:30,739 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:26:34,090 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:26:34,091 INFO L272 AbstractInterpreter]: Visited 93 different actions 179 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 03:26:34,102 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:26:34,102 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:26:36,552 INFO L227 lantSequenceWeakener]: Weakened 77 states. On average, predicates are now at 79.3% of their original sizes. [2018-11-07 03:26:36,552 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:26:58,092 INFO L415 sIntCurrentIteration]: We unified 207 AI predicates to 207 [2018-11-07 03:26:58,093 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:26:58,094 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:26:58,094 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [25] imperfect sequences [12] total 35 [2018-11-07 03:26:58,094 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:26:58,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-11-07 03:26:58,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-11-07 03:26:58,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=479, Unknown=0, NotChecked=0, Total=600 [2018-11-07 03:26:58,097 INFO L87 Difference]: Start difference. First operand 1138 states and 1729 transitions. Second operand 25 states. [2018-11-07 03:27:41,902 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:29:11,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:29:11,823 INFO L93 Difference]: Finished difference Result 3350 states and 5072 transitions. [2018-11-07 03:29:11,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-07 03:29:11,823 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 208 [2018-11-07 03:29:11,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:29:11,837 INFO L225 Difference]: With dead ends: 3350 [2018-11-07 03:29:11,838 INFO L226 Difference]: Without dead ends: 2218 [2018-11-07 03:29:11,844 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 225 GetRequests, 164 SyntacticMatches, 20 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 26.4s TimeCoverageRelationStatistics Valid=308, Invalid=1498, Unknown=0, NotChecked=0, Total=1806 [2018-11-07 03:29:11,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2218 states. [2018-11-07 03:29:12,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2218 to 2214. [2018-11-07 03:29:12,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2214 states. [2018-11-07 03:29:12,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2214 states to 2214 states and 2847 transitions. [2018-11-07 03:29:12,021 INFO L78 Accepts]: Start accepts. Automaton has 2214 states and 2847 transitions. Word has length 208 [2018-11-07 03:29:12,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:29:12,021 INFO L480 AbstractCegarLoop]: Abstraction has 2214 states and 2847 transitions. [2018-11-07 03:29:12,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-11-07 03:29:12,023 INFO L276 IsEmpty]: Start isEmpty. Operand 2214 states and 2847 transitions. [2018-11-07 03:29:12,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2018-11-07 03:29:12,030 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:29:12,030 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:29:12,031 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:29:12,031 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:29:12,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1895724036, now seen corresponding path program 1 times [2018-11-07 03:29:12,031 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:29:12,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:29:12,033 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:29:12,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:29:12,034 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:29:12,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:29:12,621 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 184 proven. 83 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-11-07 03:29:12,622 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:29:12,622 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:29:12,622 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 320 with the following transitions: [2018-11-07 03:29:12,623 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [213], [215], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 03:29:12,628 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:29:12,629 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:29:23,848 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:29:23,848 INFO L272 AbstractInterpreter]: Visited 120 different actions 355 times. Merged at 7 different actions 17 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 03:29:23,857 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:29:23,857 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:29:27,157 INFO L227 lantSequenceWeakener]: Weakened 21 states. On average, predicates are now at 78.57% of their original sizes. [2018-11-07 03:29:27,158 INFO L413 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-11-07 03:29:42,292 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 03:29:42,297 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 03:29:42,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 03:29:42 BoogieIcfgContainer [2018-11-07 03:29:42,298 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 03:29:42,302 INFO L168 Benchmark]: Toolchain (without parser) took 208529.74 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-11-07 03:29:42,303 INFO L168 Benchmark]: CDTParser took 0.21 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 03:29:42,304 INFO L168 Benchmark]: CACSL2BoogieTranslator took 738.38 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-07 03:29:42,306 INFO L168 Benchmark]: Boogie Procedure Inliner took 162.74 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 743.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -842.4 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2018-11-07 03:29:42,307 INFO L168 Benchmark]: Boogie Preprocessor took 134.89 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: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2018-11-07 03:29:42,309 INFO L168 Benchmark]: RCFGBuilder took 3658.58 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 132.5 MB). Peak memory consumption was 132.5 MB. Max. memory is 7.1 GB. [2018-11-07 03:29:42,310 INFO L168 Benchmark]: TraceAbstraction took 203829.64 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.7 GB in the end (delta: -641.3 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-11-07 03:29:42,320 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 738.38 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 162.74 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 743.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -842.4 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 134.89 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: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3658.58 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 132.5 MB). Peak memory consumption was 132.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 203829.64 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.7 GB in the end (delta: -641.3 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 100). Cancelled while BasicCegarLoop was analyzing trace of length 320 with TraceHistMax 4,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 11 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 203.7s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 142.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 518 SDtfs, 5252 SDslu, 813 SDs, 0 SdLazy, 7397 SolverSat, 1289 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 56.7s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 251 GetRequests, 170 SyntacticMatches, 25 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 27.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2214occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 14.6s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9950207039337476 AbsIntWeakeningRatio, 0.11047619047619048 AbsIntAvgWeakeningVarsNumRemoved, 549.52 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 68 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 484 NumberOfCodeBlocks, 484 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 480 ConstructedInterpolants, 0 QuantifiedInterpolants, 998656 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 210/212 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown