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/Problem11_label08_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 23:57:31,682 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 23:57:31,684 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 23:57:31,698 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 23:57:31,700 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 23:57:31,701 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 23:57:31,705 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 23:57:31,708 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 23:57:31,710 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 23:57:31,713 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 23:57:31,717 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 23:57:31,717 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 23:57:31,718 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 23:57:31,720 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 23:57:31,721 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 23:57:31,724 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 23:57:31,725 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 23:57:31,727 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 23:57:31,729 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 23:57:31,739 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 23:57:31,744 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 23:57:31,745 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 23:57:31,752 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 23:57:31,752 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 23:57:31,752 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 23:57:31,753 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 23:57:31,754 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 23:57:31,755 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 23:57:31,756 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 23:57:31,760 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 23:57:31,760 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 23:57:31,761 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-06 23:57:31,761 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-06 23:57:31,761 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-06 23:57:31,762 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-06 23:57:31,763 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-06 23:57:31,763 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 [2018-11-06 23:57:31,779 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 23:57:31,780 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 23:57:31,781 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 23:57:31,781 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-06 23:57:31,781 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-06 23:57:31,781 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-06 23:57:31,782 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-06 23:57:31,782 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-06 23:57:31,782 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-06 23:57:31,782 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-06 23:57:31,783 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-06 23:57:31,783 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-06 23:57:31,784 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 23:57:31,784 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 23:57:31,784 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 23:57:31,784 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 23:57:31,784 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 23:57:31,785 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 23:57:31,785 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 23:57:31,785 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 23:57:31,785 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 23:57:31,786 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 23:57:31,786 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 23:57:31,786 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 23:57:31,786 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 23:57:31,786 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 23:57:31,787 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 23:57:31,787 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 23:57:31,787 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-06 23:57:31,787 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 23:57:31,788 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 23:57:31,788 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 23:57:31,788 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 23:57:31,788 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-06 23:57:31,852 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 23:57:31,874 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 23:57:31,879 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 23:57:31,881 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 23:57:31,882 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 23:57:31,883 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label08_false-unreach-call.c [2018-11-06 23:57:31,952 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24fd72f83/31aec11f2c5943c6a296afffb038d42c/FLAG9b0d18fbf [2018-11-06 23:57:32,564 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 23:57:32,568 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label08_false-unreach-call.c [2018-11-06 23:57:32,593 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24fd72f83/31aec11f2c5943c6a296afffb038d42c/FLAG9b0d18fbf [2018-11-06 23:57:32,616 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24fd72f83/31aec11f2c5943c6a296afffb038d42c [2018-11-06 23:57:32,630 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 23:57:32,632 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 23:57:32,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 23:57:32,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 23:57:32,641 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 23:57:32,642 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:57:32" (1/1) ... [2018-11-06 23:57:32,646 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ab1c4bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:57:32, skipping insertion in model container [2018-11-06 23:57:32,646 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:57:32" (1/1) ... [2018-11-06 23:57:32,659 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 23:57:32,757 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 23:57:33,460 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 23:57:33,468 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 23:57:33,645 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 23:57:33,665 INFO L193 MainTranslator]: Completed translation [2018-11-06 23:57:33,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:57:33 WrapperNode [2018-11-06 23:57:33,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 23:57:33,667 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 23:57:33,667 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 23:57:33,667 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 23:57:33,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:57:33" (1/1) ... [2018-11-06 23:57:33,870 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:57:33" (1/1) ... [2018-11-06 23:57:33,890 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 23:57:33,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 23:57:33,890 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 23:57:33,893 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 23:57:33,904 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:57:33" (1/1) ... [2018-11-06 23:57:33,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:57:33" (1/1) ... [2018-11-06 23:57:33,912 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:57:33" (1/1) ... [2018-11-06 23:57:33,913 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:57:33" (1/1) ... [2018-11-06 23:57:33,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:57:33" (1/1) ... [2018-11-06 23:57:33,982 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:57:33" (1/1) ... [2018-11-06 23:57:33,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:57:33" (1/1) ... [2018-11-06 23:57:34,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 23:57:34,014 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 23:57:34,014 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 23:57:34,014 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 23:57:34,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:57:33" (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 [2018-11-06 23:57:34,094 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 23:57:34,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-06 23:57:34,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-06 23:57:34,096 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-06 23:57:34,096 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-06 23:57:34,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 23:57:34,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 23:57:34,096 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-06 23:57:34,097 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-06 23:57:38,748 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 23:57:38,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:57:38 BoogieIcfgContainer [2018-11-06 23:57:38,750 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 23:57:38,751 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 23:57:38,751 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 23:57:38,755 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 23:57:38,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:57:32" (1/3) ... [2018-11-06 23:57:38,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@543c9949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:57:38, skipping insertion in model container [2018-11-06 23:57:38,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:57:33" (2/3) ... [2018-11-06 23:57:38,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@543c9949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:57:38, skipping insertion in model container [2018-11-06 23:57:38,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:57:38" (3/3) ... [2018-11-06 23:57:38,759 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label08_false-unreach-call.c [2018-11-06 23:57:38,770 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 23:57:38,781 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 23:57:38,798 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 23:57:38,837 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 23:57:38,837 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 23:57:38,838 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 23:57:38,838 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 23:57:38,838 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 23:57:38,838 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 23:57:38,838 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 23:57:38,839 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 23:57:38,868 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-06 23:57:38,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-06 23:57:38,875 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:57:38,876 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] [2018-11-06 23:57:38,878 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:57:38,884 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:57:38,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1486587100, now seen corresponding path program 1 times [2018-11-06 23:57:38,887 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-06 23:57:38,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:57:38,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 23:57:38,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:57:38,934 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-06 23:57:39,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:57:39,349 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-06 23:57:39,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:57:39,395 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 23:57:39,395 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 23:57:39,395 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-06 23:57:39,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 23:57:39,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 23:57:39,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 23:57:39,417 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 3 states. [2018-11-06 23:57:41,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:57:41,798 INFO L93 Difference]: Finished difference Result 782 states and 1372 transitions. [2018-11-06 23:57:41,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 23:57:41,801 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-11-06 23:57:41,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:57:41,821 INFO L225 Difference]: With dead ends: 782 [2018-11-06 23:57:41,821 INFO L226 Difference]: Without dead ends: 487 [2018-11-06 23:57:41,829 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 23:57:41,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2018-11-06 23:57:41,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 482. [2018-11-06 23:57:41,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2018-11-06 23:57:41,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 837 transitions. [2018-11-06 23:57:41,921 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 837 transitions. Word has length 22 [2018-11-06 23:57:41,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:57:41,921 INFO L480 AbstractCegarLoop]: Abstraction has 482 states and 837 transitions. [2018-11-06 23:57:41,922 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 23:57:41,922 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 837 transitions. [2018-11-06 23:57:41,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-11-06 23:57:41,927 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:57:41,928 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 23:57:41,928 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:57:41,928 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:57:41,929 INFO L82 PathProgramCache]: Analyzing trace with hash 838371767, now seen corresponding path program 1 times [2018-11-06 23:57:41,929 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-06 23:57:41,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:57:41,930 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 23:57:41,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:57:41,931 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-06 23:57:42,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:57:42,273 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:57:42,273 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 23:57:42,274 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-06 23:57:42,274 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-06 23:57:42,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 23:57:42,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 23:57:42,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-06 23:57:42,277 INFO L87 Difference]: Start difference. First operand 482 states and 837 transitions. Second operand 6 states. [2018-11-06 23:57:47,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:57:47,784 INFO L93 Difference]: Finished difference Result 1802 states and 3378 transitions. [2018-11-06 23:57:47,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-06 23:57:47,785 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2018-11-06 23:57:47,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:57:47,800 INFO L225 Difference]: With dead ends: 1802 [2018-11-06 23:57:47,801 INFO L226 Difference]: Without dead ends: 1326 [2018-11-06 23:57:47,811 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-06 23:57:47,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2018-11-06 23:57:47,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 1284. [2018-11-06 23:57:47,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1284 states. [2018-11-06 23:57:47,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 1948 transitions. [2018-11-06 23:57:47,897 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 1948 transitions. Word has length 93 [2018-11-06 23:57:47,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:57:47,898 INFO L480 AbstractCegarLoop]: Abstraction has 1284 states and 1948 transitions. [2018-11-06 23:57:47,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 23:57:47,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 1948 transitions. [2018-11-06 23:57:47,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-11-06 23:57:47,901 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:57:47,902 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 23:57:47,902 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:57:47,902 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:57:47,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1072390589, now seen corresponding path program 1 times [2018-11-06 23:57:47,903 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-06 23:57:47,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:57:47,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 23:57:47,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:57:47,904 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-06 23:57:47,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:57:48,184 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:57:48,185 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 23:57:48,185 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-06 23:57:48,185 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-06 23:57:48,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 23:57:48,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 23:57:48,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-06 23:57:48,187 INFO L87 Difference]: Start difference. First operand 1284 states and 1948 transitions. Second operand 6 states. [2018-11-06 23:57:52,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:57:52,340 INFO L93 Difference]: Finished difference Result 4477 states and 7236 transitions. [2018-11-06 23:57:52,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 23:57:52,341 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2018-11-06 23:57:52,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:57:52,370 INFO L225 Difference]: With dead ends: 4477 [2018-11-06 23:57:52,370 INFO L226 Difference]: Without dead ends: 3199 [2018-11-06 23:57:52,389 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-06 23:57:52,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3199 states. [2018-11-06 23:57:52,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3199 to 3160. [2018-11-06 23:57:52,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3160 states. [2018-11-06 23:57:52,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3160 states to 3160 states and 4530 transitions. [2018-11-06 23:57:52,530 INFO L78 Accepts]: Start accepts. Automaton has 3160 states and 4530 transitions. Word has length 103 [2018-11-06 23:57:52,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:57:52,531 INFO L480 AbstractCegarLoop]: Abstraction has 3160 states and 4530 transitions. [2018-11-06 23:57:52,531 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 23:57:52,531 INFO L276 IsEmpty]: Start isEmpty. Operand 3160 states and 4530 transitions. [2018-11-06 23:57:52,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-11-06 23:57:52,541 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:57:52,543 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 23:57:52,543 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:57:52,543 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:57:52,543 INFO L82 PathProgramCache]: Analyzing trace with hash -2038666381, now seen corresponding path program 1 times [2018-11-06 23:57:52,544 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-06 23:57:52,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:57:52,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 23:57:52,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:57:52,545 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-06 23:57:52,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:57:53,091 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:57:53,092 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 23:57:53,092 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-06 23:57:53,093 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 168 with the following transitions: [2018-11-06 23:57:53,097 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [77], [79], [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], [498], [499], [503], [507], [510], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-06 23:57:53,197 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-06 23:57:53,198 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-06 23:57:55,016 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-06 23:57:55,652 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-06 23:57:55,653 INFO L272 AbstractInterpreter]: Visited 79 different actions 79 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-11-06 23:57:55,697 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:57:55,698 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-06 23:57:58,300 INFO L227 lantSequenceWeakener]: Weakened 159 states. On average, predicates are now at 73.15% of their original sizes. [2018-11-06 23:57:58,301 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-06 23:57:58,759 INFO L415 sIntCurrentIteration]: We unified 166 AI predicates to 166 [2018-11-06 23:57:58,760 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-06 23:57:58,760 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 23:57:58,760 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-06 23:57:58,761 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-06 23:57:58,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 23:57:58,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 23:57:58,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-06 23:57:58,762 INFO L87 Difference]: Start difference. First operand 3160 states and 4530 transitions. Second operand 7 states. [2018-11-06 23:58:51,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:58:51,452 INFO L93 Difference]: Finished difference Result 6506 states and 9271 transitions. [2018-11-06 23:58:51,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 23:58:51,452 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 167 [2018-11-06 23:58:51,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:58:51,475 INFO L225 Difference]: With dead ends: 6506 [2018-11-06 23:58:51,475 INFO L226 Difference]: Without dead ends: 3352 [2018-11-06 23:58:51,490 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-06 23:58:51,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3352 states. [2018-11-06 23:58:51,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3352 to 3350. [2018-11-06 23:58:51,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3350 states. [2018-11-06 23:58:51,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3350 states to 3350 states and 4729 transitions. [2018-11-06 23:58:51,589 INFO L78 Accepts]: Start accepts. Automaton has 3350 states and 4729 transitions. Word has length 167 [2018-11-06 23:58:51,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:58:51,590 INFO L480 AbstractCegarLoop]: Abstraction has 3350 states and 4729 transitions. [2018-11-06 23:58:51,590 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 23:58:51,590 INFO L276 IsEmpty]: Start isEmpty. Operand 3350 states and 4729 transitions. [2018-11-06 23:58:51,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-11-06 23:58:51,596 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:58:51,596 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-11-06 23:58:51,597 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:58:51,597 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:58:51,597 INFO L82 PathProgramCache]: Analyzing trace with hash 170993114, now seen corresponding path program 1 times [2018-11-06 23:58:51,597 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-06 23:58:51,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:58:51,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 23:58:51,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:58:51,599 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-06 23:58:51,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:58:52,408 WARN L179 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 13 [2018-11-06 23:58:52,529 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:58:52,529 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 23:58:52,529 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-06 23:58:52,530 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 221 with the following transitions: [2018-11-06 23:58:52,530 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [77], [79], [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], [538], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-06 23:58:52,537 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-06 23:58:52,537 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-06 23:58:53,986 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-06 23:59:31,412 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-06 23:59:31,412 INFO L272 AbstractInterpreter]: Visited 126 different actions 858 times. Merged at 7 different actions 44 times. Widened at 1 different actions 2 times. Found 7 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-06 23:59:31,421 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:59:31,422 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-06 23:59:31,422 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 23:59:31,422 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 23:59:31,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 23:59:31,435 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-06 23:59:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:59:31,536 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 23:59:32,063 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:59:32,063 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-06 23:59:32,345 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-11-06 23:59:32,609 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:59:32,630 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-06 23:59:32,631 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-06 23:59:32,631 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-06 23:59:32,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-06 23:59:32,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-06 23:59:32,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-11-06 23:59:32,633 INFO L87 Difference]: Start difference. First operand 3350 states and 4729 transitions. Second operand 9 states. [2018-11-06 23:59:39,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:59:39,223 INFO L93 Difference]: Finished difference Result 9607 states and 18173 transitions. [2018-11-06 23:59:39,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-06 23:59:39,224 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 220 [2018-11-06 23:59:39,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:59:39,310 INFO L225 Difference]: With dead ends: 9607 [2018-11-06 23:59:39,310 INFO L226 Difference]: Without dead ends: 6453 [2018-11-06 23:59:39,407 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 445 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=148, Invalid=314, Unknown=0, NotChecked=0, Total=462 [2018-11-06 23:59:39,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6453 states. [2018-11-06 23:59:39,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6453 to 6129. [2018-11-06 23:59:39,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6129 states. [2018-11-06 23:59:39,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6129 states to 6129 states and 8769 transitions. [2018-11-06 23:59:39,723 INFO L78 Accepts]: Start accepts. Automaton has 6129 states and 8769 transitions. Word has length 220 [2018-11-06 23:59:39,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:59:39,724 INFO L480 AbstractCegarLoop]: Abstraction has 6129 states and 8769 transitions. [2018-11-06 23:59:39,724 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-06 23:59:39,724 INFO L276 IsEmpty]: Start isEmpty. Operand 6129 states and 8769 transitions. [2018-11-06 23:59:39,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-11-06 23:59:39,731 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:59:39,732 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 23:59:39,732 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:59:39,732 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:59:39,733 INFO L82 PathProgramCache]: Analyzing trace with hash 226627033, now seen corresponding path program 1 times [2018-11-06 23:59:39,733 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-06 23:59:39,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:59:39,734 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 23:59:39,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:59:39,734 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-06 23:59:39,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:59:40,108 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-11-06 23:59:40,109 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 23:59:40,109 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 23:59:40,109 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-06 23:59:40,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 23:59:40,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 23:59:40,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 23:59:40,111 INFO L87 Difference]: Start difference. First operand 6129 states and 8769 transitions. Second operand 4 states. [2018-11-06 23:59:43,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:59:43,198 INFO L93 Difference]: Finished difference Result 18489 states and 30030 transitions. [2018-11-06 23:59:43,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 23:59:43,199 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 241 [2018-11-06 23:59:43,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:59:43,295 INFO L225 Difference]: With dead ends: 18489 [2018-11-06 23:59:43,295 INFO L226 Difference]: Without dead ends: 12556 [2018-11-06 23:59:43,349 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 [2018-11-06 23:59:43,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12556 states. [2018-11-06 23:59:43,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12556 to 10015. [2018-11-06 23:59:43,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10015 states. [2018-11-06 23:59:43,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10015 states to 10015 states and 14823 transitions. [2018-11-06 23:59:43,783 INFO L78 Accepts]: Start accepts. Automaton has 10015 states and 14823 transitions. Word has length 241 [2018-11-06 23:59:43,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:59:43,784 INFO L480 AbstractCegarLoop]: Abstraction has 10015 states and 14823 transitions. [2018-11-06 23:59:43,784 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 23:59:43,784 INFO L276 IsEmpty]: Start isEmpty. Operand 10015 states and 14823 transitions. [2018-11-06 23:59:43,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-11-06 23:59:43,795 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:59:43,796 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 23:59:43,796 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:59:43,796 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:59:43,798 INFO L82 PathProgramCache]: Analyzing trace with hash -764405825, now seen corresponding path program 1 times [2018-11-06 23:59:43,798 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-06 23:59:43,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:59:43,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 23:59:43,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:59:43,799 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-06 23:59:43,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:59:44,025 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-11-06 23:59:44,026 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 23:59:44,026 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 23:59:44,026 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-06 23:59:44,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 23:59:44,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 23:59:44,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 23:59:44,029 INFO L87 Difference]: Start difference. First operand 10015 states and 14823 transitions. Second operand 3 states. [2018-11-06 23:59:46,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:59:46,303 INFO L93 Difference]: Finished difference Result 23859 states and 37410 transitions. [2018-11-06 23:59:46,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 23:59:46,304 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 262 [2018-11-06 23:59:46,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:59:46,405 INFO L225 Difference]: With dead ends: 23859 [2018-11-06 23:59:46,405 INFO L226 Difference]: Without dead ends: 14040 [2018-11-06 23:59:46,475 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 23:59:46,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14040 states. [2018-11-06 23:59:47,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14040 to 14030. [2018-11-06 23:59:47,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14030 states. [2018-11-06 23:59:47,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14030 states to 14030 states and 20462 transitions. [2018-11-06 23:59:47,126 INFO L78 Accepts]: Start accepts. Automaton has 14030 states and 20462 transitions. Word has length 262 [2018-11-06 23:59:47,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:59:47,127 INFO L480 AbstractCegarLoop]: Abstraction has 14030 states and 20462 transitions. [2018-11-06 23:59:47,127 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 23:59:47,127 INFO L276 IsEmpty]: Start isEmpty. Operand 14030 states and 20462 transitions. [2018-11-06 23:59:47,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-11-06 23:59:47,144 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:59:47,144 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 23:59:47,145 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:59:47,145 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:59:47,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1252280123, now seen corresponding path program 1 times [2018-11-06 23:59:47,145 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-06 23:59:47,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:59:47,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 23:59:47,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:59:47,147 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-06 23:59:47,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:59:48,167 WARN L179 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 15 [2018-11-06 23:59:48,590 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 5 [2018-11-06 23:59:48,659 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-11-06 23:59:48,660 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 23:59:48,660 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-06 23:59:48,660 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 266 with the following transitions: [2018-11-06 23:59:48,661 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [77], [79], [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], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [665], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-06 23:59:48,677 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-06 23:59:48,677 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-06 23:59:51,527 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:00:12,012 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:00:12,012 INFO L272 AbstractInterpreter]: Visited 140 different actions 407 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-07 00:00:12,020 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:00:12,020 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:00:15,254 INFO L227 lantSequenceWeakener]: Weakened 50 states. On average, predicates are now at 74.58% of their original sizes. [2018-11-07 00:00:15,254 INFO L413 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-11-07 00:01:13,882 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 00:01:13,887 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 00:01:13,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:01:13 BoogieIcfgContainer [2018-11-07 00:01:13,888 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 00:01:13,889 INFO L168 Benchmark]: Toolchain (without parser) took 221257.62 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 2.0 GB in the end (delta: -564.4 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-11-07 00:01:13,890 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 00:01:13,891 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1031.22 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-11-07 00:01:13,891 INFO L168 Benchmark]: Boogie Procedure Inliner took 222.98 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 710.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -816.9 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. [2018-11-07 00:01:13,892 INFO L168 Benchmark]: Boogie Preprocessor took 122.83 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 00:01:13,893 INFO L168 Benchmark]: RCFGBuilder took 4736.52 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 166.4 MB). Peak memory consumption was 166.4 MB. Max. memory is 7.1 GB. [2018-11-07 00:01:13,894 INFO L168 Benchmark]: TraceAbstraction took 215136.47 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.0 GB in the end (delta: 22.6 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-11-07 00:01:13,899 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1031.22 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 222.98 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 710.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -816.9 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.83 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4736.52 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 166.4 MB). Peak memory consumption was 166.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 215136.47 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.0 GB in the end (delta: 22.6 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 51). Cancelled while BasicCegarLoop was analyzing trace of length 266 with TraceHistMax 3,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 10 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 215.0s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 77.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1870 SDtfs, 5030 SDslu, 1421 SDs, 0 SdLazy, 10324 SolverSat, 2110 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 52.4s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 667 GetRequests, 620 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14030occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 64.8s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.9952257905746282 AbsIntWeakeningRatio, 0.1325581395348837 AbsIntAvgWeakeningVarsNumRemoved, 1080.0418604651163 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 7 MinimizatonAttempts, 2963 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 1328 NumberOfCodeBlocks, 1328 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1539 ConstructedInterpolants, 0 QuantifiedInterpolants, 989166 SizeOfPredicates, 0 NumberOfNonLiveVariables, 424 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 726/734 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown