java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label58_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 12:06:41,800 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 12:06:41,803 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 12:06:41,822 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 12:06:41,822 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 12:06:41,823 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 12:06:41,826 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 12:06:41,829 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 12:06:41,832 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 12:06:41,834 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 12:06:41,835 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 12:06:41,835 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 12:06:41,838 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 12:06:41,839 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 12:06:41,840 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 12:06:41,849 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 12:06:41,850 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 12:06:41,853 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 12:06:41,858 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 12:06:41,859 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 12:06:41,862 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 12:06:41,864 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 12:06:41,867 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 12:06:41,868 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 12:06:41,868 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 12:06:41,869 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 12:06:41,870 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 12:06:41,872 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 12:06:41,873 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 12:06:41,876 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 12:06:41,876 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 12:06:41,877 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-07 12:06:41,881 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 12:06:41,905 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 12:06:41,905 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 12:06:41,908 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 12:06:41,908 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 12:06:41,909 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 12:06:41,909 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 12:06:41,909 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 12:06:41,909 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 12:06:41,909 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 12:06:41,909 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 12:06:41,910 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 12:06:41,910 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 12:06:41,911 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 12:06:41,911 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 12:06:41,911 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 12:06:41,911 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 12:06:41,911 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 12:06:41,911 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 12:06:41,912 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 12:06:41,912 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 12:06:41,912 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 12:06:41,912 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 12:06:41,912 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 12:06:41,912 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 12:06:41,913 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 12:06:41,913 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 12:06:41,913 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 12:06:41,913 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 12:06:41,913 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 12:06:41,914 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 12:06:41,914 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 12:06:41,914 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 12:06:41,914 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 12:06:41,914 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 12:06:41,960 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 12:06:41,973 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 12:06:41,977 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 12:06:41,979 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 12:06:41,980 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 12:06:41,980 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label58_false-unreach-call_false-termination.c [2018-11-07 12:06:42,045 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c837cc9f9/3ad155e4ab414abb851a9cee5cafc266/FLAG2fcd0e08e [2018-11-07 12:06:42,665 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 12:06:42,666 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label58_false-unreach-call_false-termination.c [2018-11-07 12:06:42,681 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c837cc9f9/3ad155e4ab414abb851a9cee5cafc266/FLAG2fcd0e08e [2018-11-07 12:06:42,699 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c837cc9f9/3ad155e4ab414abb851a9cee5cafc266 [2018-11-07 12:06:42,713 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 12:06:42,715 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 12:06:42,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 12:06:42,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 12:06:42,723 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 12:06:42,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:06:42" (1/1) ... [2018-11-07 12:06:42,727 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18470afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:06:42, skipping insertion in model container [2018-11-07 12:06:42,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:06:42" (1/1) ... [2018-11-07 12:06:42,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 12:06:42,821 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 12:06:43,376 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 12:06:43,382 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 12:06:43,553 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 12:06:43,576 INFO L193 MainTranslator]: Completed translation [2018-11-07 12:06:43,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:06:43 WrapperNode [2018-11-07 12:06:43,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 12:06:43,578 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 12:06:43,578 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 12:06:43,578 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 12:06:43,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:06:43" (1/1) ... [2018-11-07 12:06:43,613 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:06:43" (1/1) ... [2018-11-07 12:06:43,734 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 12:06:43,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 12:06:43,735 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 12:06:43,738 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 12:06:43,752 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:06:43" (1/1) ... [2018-11-07 12:06:43,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:06:43" (1/1) ... [2018-11-07 12:06:43,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:06:43" (1/1) ... [2018-11-07 12:06:43,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:06:43" (1/1) ... [2018-11-07 12:06:43,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:06:43" (1/1) ... [2018-11-07 12:06:43,844 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:06:43" (1/1) ... [2018-11-07 12:06:43,863 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:06:43" (1/1) ... [2018-11-07 12:06:43,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 12:06:43,879 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 12:06:43,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 12:06:43,879 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 12:06:43,880 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:06:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 12:06:43,952 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 12:06:43,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 12:06:43,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 12:06:43,952 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 12:06:43,953 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 12:06:43,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 12:06:43,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 12:06:43,953 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 12:06:43,954 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 12:06:47,499 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 12:06:47,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:06:47 BoogieIcfgContainer [2018-11-07 12:06:47,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 12:06:47,501 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 12:06:47,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 12:06:47,505 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 12:06:47,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:06:42" (1/3) ... [2018-11-07 12:06:47,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44f5a7c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:06:47, skipping insertion in model container [2018-11-07 12:06:47,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:06:43" (2/3) ... [2018-11-07 12:06:47,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44f5a7c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:06:47, skipping insertion in model container [2018-11-07 12:06:47,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:06:47" (3/3) ... [2018-11-07 12:06:47,509 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label58_false-unreach-call_false-termination.c [2018-11-07 12:06:47,520 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 12:06:47,529 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 12:06:47,545 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 12:06:47,585 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 12:06:47,585 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 12:06:47,585 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 12:06:47,586 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 12:06:47,586 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 12:06:47,586 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 12:06:47,586 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 12:06:47,586 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 12:06:47,614 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-07 12:06:47,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-07 12:06:47,621 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:06:47,622 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] [2018-11-07 12:06:47,625 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:06:47,631 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:06:47,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1333191671, now seen corresponding path program 1 times [2018-11-07 12:06:47,634 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:06:47,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:06:47,686 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:06:47,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:06:47,686 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:06:47,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:06:48,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:06:48,006 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:06:48,006 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 12:06:48,006 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:06:48,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 12:06:48,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 12:06:48,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 12:06:48,037 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 4 states. [2018-11-07 12:06:51,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:06:51,169 INFO L93 Difference]: Finished difference Result 894 states and 1611 transitions. [2018-11-07 12:06:51,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 12:06:51,173 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-11-07 12:06:51,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:06:51,197 INFO L225 Difference]: With dead ends: 894 [2018-11-07 12:06:51,197 INFO L226 Difference]: Without dead ends: 633 [2018-11-07 12:06:51,207 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 12:06:51,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2018-11-07 12:06:51,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2018-11-07 12:06:51,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2018-11-07 12:06:51,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 1007 transitions. [2018-11-07 12:06:51,321 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 1007 transitions. Word has length 21 [2018-11-07 12:06:51,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:06:51,322 INFO L480 AbstractCegarLoop]: Abstraction has 633 states and 1007 transitions. [2018-11-07 12:06:51,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 12:06:51,322 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 1007 transitions. [2018-11-07 12:06:51,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-11-07 12:06:51,330 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:06:51,331 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 12:06:51,331 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:06:51,332 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:06:51,332 INFO L82 PathProgramCache]: Analyzing trace with hash -128001133, now seen corresponding path program 1 times [2018-11-07 12:06:51,332 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:06:51,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:06:51,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:06:51,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:06:51,334 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:06:51,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:06:51,753 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:06:51,753 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:06:51,754 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 12:06:51,754 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:06:51,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 12:06:51,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 12:06:51,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 12:06:51,761 INFO L87 Difference]: Start difference. First operand 633 states and 1007 transitions. Second operand 4 states. [2018-11-07 12:06:54,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:06:54,838 INFO L93 Difference]: Finished difference Result 2358 states and 3922 transitions. [2018-11-07 12:06:54,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 12:06:54,839 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2018-11-07 12:06:54,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:06:54,862 INFO L225 Difference]: With dead ends: 2358 [2018-11-07 12:06:54,862 INFO L226 Difference]: Without dead ends: 1731 [2018-11-07 12:06:54,871 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 12:06:54,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2018-11-07 12:06:54,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1731. [2018-11-07 12:06:54,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1731 states. [2018-11-07 12:06:54,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2621 transitions. [2018-11-07 12:06:54,971 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2621 transitions. Word has length 134 [2018-11-07 12:06:54,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:06:54,972 INFO L480 AbstractCegarLoop]: Abstraction has 1731 states and 2621 transitions. [2018-11-07 12:06:54,972 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 12:06:54,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2621 transitions. [2018-11-07 12:06:54,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-11-07 12:06:54,990 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:06:54,990 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 12:06:54,991 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:06:54,991 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:06:54,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1381552484, now seen corresponding path program 1 times [2018-11-07 12:06:54,991 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:06:54,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:06:54,993 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:06:54,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:06:54,993 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:06:55,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:06:55,337 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:06:55,337 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:06:55,337 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 12:06:55,338 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:06:55,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 12:06:55,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 12:06:55,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 12:06:55,339 INFO L87 Difference]: Start difference. First operand 1731 states and 2621 transitions. Second operand 4 states. [2018-11-07 12:06:58,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:06:58,331 INFO L93 Difference]: Finished difference Result 6200 states and 9916 transitions. [2018-11-07 12:06:58,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 12:06:58,333 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2018-11-07 12:06:58,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:06:58,379 INFO L225 Difference]: With dead ends: 6200 [2018-11-07 12:06:58,379 INFO L226 Difference]: Without dead ends: 4475 [2018-11-07 12:06:58,408 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 12:06:58,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4475 states. [2018-11-07 12:06:58,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4475 to 4292. [2018-11-07 12:06:58,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4292 states. [2018-11-07 12:06:58,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4292 states to 4292 states and 6361 transitions. [2018-11-07 12:06:58,585 INFO L78 Accepts]: Start accepts. Automaton has 4292 states and 6361 transitions. Word has length 155 [2018-11-07 12:06:58,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:06:58,586 INFO L480 AbstractCegarLoop]: Abstraction has 4292 states and 6361 transitions. [2018-11-07 12:06:58,586 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 12:06:58,586 INFO L276 IsEmpty]: Start isEmpty. Operand 4292 states and 6361 transitions. [2018-11-07 12:06:58,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-11-07 12:06:58,602 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:06:58,603 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 12:06:58,603 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:06:58,603 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:06:58,603 INFO L82 PathProgramCache]: Analyzing trace with hash 622289172, now seen corresponding path program 1 times [2018-11-07 12:06:58,604 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:06:58,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:06:58,605 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:06:58,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:06:58,605 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:06:58,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:06:59,195 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2018-11-07 12:06:59,864 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 119 proven. 86 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-07 12:06:59,865 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 12:06:59,865 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 12:06:59,866 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 314 with the following transitions: [2018-11-07 12:06:59,869 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [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], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [738], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 12:06:59,919 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 12:06:59,920 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 12:07:00,564 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 12:07:01,243 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 12:07:01,245 INFO L272 AbstractInterpreter]: Visited 137 different actions 137 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 12:07:01,277 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:07:01,278 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 12:07:02,430 INFO L227 lantSequenceWeakener]: Weakened 301 states. On average, predicates are now at 77.33% of their original sizes. [2018-11-07 12:07:02,431 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 12:07:02,812 INFO L415 sIntCurrentIteration]: We unified 312 AI predicates to 312 [2018-11-07 12:07:02,813 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 12:07:02,814 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 12:07:02,814 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2018-11-07 12:07:02,814 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:07:02,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 12:07:02,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 12:07:02,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 12:07:02,816 INFO L87 Difference]: Start difference. First operand 4292 states and 6361 transitions. Second operand 7 states. [2018-11-07 12:07:58,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:07:58,296 INFO L93 Difference]: Finished difference Result 8763 states and 12926 transitions. [2018-11-07 12:07:58,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 12:07:58,297 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 313 [2018-11-07 12:07:58,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:07:58,325 INFO L225 Difference]: With dead ends: 8763 [2018-11-07 12:07:58,325 INFO L226 Difference]: Without dead ends: 4477 [2018-11-07 12:07:58,351 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 313 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 12:07:58,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4477 states. [2018-11-07 12:07:58,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4477 to 4475. [2018-11-07 12:07:58,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4475 states. [2018-11-07 12:07:58,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4475 states to 4475 states and 6552 transitions. [2018-11-07 12:07:58,484 INFO L78 Accepts]: Start accepts. Automaton has 4475 states and 6552 transitions. Word has length 313 [2018-11-07 12:07:58,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:07:58,485 INFO L480 AbstractCegarLoop]: Abstraction has 4475 states and 6552 transitions. [2018-11-07 12:07:58,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 12:07:58,485 INFO L276 IsEmpty]: Start isEmpty. Operand 4475 states and 6552 transitions. [2018-11-07 12:07:58,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2018-11-07 12:07:58,501 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:07:58,502 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 12:07:58,502 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:07:58,503 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:07:58,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1980550211, now seen corresponding path program 1 times [2018-11-07 12:07:58,503 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:07:58,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:07:58,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:07:58,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:07:58,505 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:07:58,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:07:59,434 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 130 proven. 164 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 12:07:59,435 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 12:07:59,435 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 12:07:59,435 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 325 with the following transitions: [2018-11-07 12:07:59,436 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [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], [551], [554], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [738], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 12:07:59,443 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 12:07:59,443 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 12:07:59,720 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 12:07:59,721 INFO L272 AbstractInterpreter]: Visited 140 different actions 273 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 12:07:59,758 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:07:59,758 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 12:08:00,425 INFO L227 lantSequenceWeakener]: Weakened 109 states. On average, predicates are now at 77.75% of their original sizes. [2018-11-07 12:08:00,425 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 12:08:01,545 INFO L415 sIntCurrentIteration]: We unified 323 AI predicates to 323 [2018-11-07 12:08:01,545 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 12:08:01,546 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 12:08:01,546 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [25] imperfect sequences [12] total 35 [2018-11-07 12:08:01,546 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:08:01,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-11-07 12:08:01,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-11-07 12:08:01,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=481, Unknown=0, NotChecked=0, Total=600 [2018-11-07 12:08:01,549 INFO L87 Difference]: Start difference. First operand 4475 states and 6552 transitions. Second operand 25 states. [2018-11-07 12:08:08,759 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown