java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label26_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 07:45:40,767 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 07:45:40,772 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 07:45:40,793 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 07:45:40,794 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 07:45:40,795 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 07:45:40,796 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 07:45:40,798 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 07:45:40,799 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 07:45:40,800 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 07:45:40,801 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 07:45:40,802 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 07:45:40,802 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 07:45:40,803 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 07:45:40,805 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 07:45:40,805 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 07:45:40,806 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 07:45:40,808 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 07:45:40,810 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 07:45:40,812 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 07:45:40,813 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 07:45:40,814 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 07:45:40,817 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 07:45:40,817 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 07:45:40,817 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 07:45:40,818 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 07:45:40,819 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 07:45:40,820 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 07:45:40,821 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 07:45:40,822 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 07:45:40,823 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 07:45:40,823 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-27 07:45:40,826 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 07:45:40,843 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 07:45:40,843 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 07:45:40,844 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 07:45:40,845 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 07:45:40,845 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 07:45:40,845 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 07:45:40,845 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 07:45:40,845 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 07:45:40,846 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 07:45:40,846 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 07:45:40,846 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 07:45:40,846 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 07:45:40,846 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 07:45:40,847 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 07:45:40,847 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 07:45:40,847 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 07:45:40,848 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 07:45:40,848 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 07:45:40,848 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 07:45:40,848 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 07:45:40,848 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 07:45:40,849 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 07:45:40,849 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 07:45:40,849 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 07:45:40,849 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 07:45:40,849 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 07:45:40,850 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 07:45:40,850 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 07:45:40,850 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 07:45:40,850 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 07:45:40,850 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 07:45:40,851 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 07:45:40,851 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 07:45:40,851 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 07:45:40,851 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 07:45:40,851 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 07:45:40,895 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 07:45:40,908 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 07:45:40,912 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 07:45:40,914 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 07:45:40,914 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 07:45:40,915 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label26_true-unreach-call.c [2018-10-27 07:45:40,990 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b6f12edf8/d15c58fccfbf4dc1bd05d94520319b9b/FLAG12a3018be [2018-10-27 07:45:41,780 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 07:45:41,781 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label26_true-unreach-call.c [2018-10-27 07:45:41,816 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b6f12edf8/d15c58fccfbf4dc1bd05d94520319b9b/FLAG12a3018be [2018-10-27 07:45:41,839 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b6f12edf8/d15c58fccfbf4dc1bd05d94520319b9b [2018-10-27 07:45:41,852 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 07:45:41,854 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 07:45:41,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 07:45:41,858 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 07:45:41,865 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 07:45:41,867 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:45:41" (1/1) ... [2018-10-27 07:45:41,870 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31151419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:41, skipping insertion in model container [2018-10-27 07:45:41,871 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:45:41" (1/1) ... [2018-10-27 07:45:41,882 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 07:45:42,053 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 07:45:43,436 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 07:45:43,440 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 07:45:44,090 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 07:45:44,129 INFO L193 MainTranslator]: Completed translation [2018-10-27 07:45:44,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:44 WrapperNode [2018-10-27 07:45:44,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 07:45:44,132 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 07:45:44,133 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 07:45:44,133 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 07:45:44,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:44" (1/1) ... [2018-10-27 07:45:44,226 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:44" (1/1) ... [2018-10-27 07:45:44,693 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 07:45:44,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 07:45:44,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 07:45:44,694 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 07:45:44,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:44" (1/1) ... [2018-10-27 07:45:44,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:44" (1/1) ... [2018-10-27 07:45:44,735 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:44" (1/1) ... [2018-10-27 07:45:44,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:44" (1/1) ... [2018-10-27 07:45:44,834 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:44" (1/1) ... [2018-10-27 07:45:44,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:44" (1/1) ... [2018-10-27 07:45:44,900 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:44" (1/1) ... [2018-10-27 07:45:44,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 07:45:44,933 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 07:45:44,934 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 07:45:44,934 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 07:45:44,935 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 07:45:45,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 07:45:45,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 07:45:45,018 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-27 07:45:45,018 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-27 07:45:45,019 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 07:45:45,019 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 07:45:45,019 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 07:45:45,019 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 07:45:45,020 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 07:45:45,020 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 07:45:45,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 07:45:45,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 07:45:45,020 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 07:45:45,021 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 07:45:57,112 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 07:45:57,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:45:57 BoogieIcfgContainer [2018-10-27 07:45:57,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 07:45:57,116 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 07:45:57,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 07:45:57,120 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 07:45:57,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:45:41" (1/3) ... [2018-10-27 07:45:57,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb78536 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:45:57, skipping insertion in model container [2018-10-27 07:45:57,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:44" (2/3) ... [2018-10-27 07:45:57,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb78536 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:45:57, skipping insertion in model container [2018-10-27 07:45:57,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:45:57" (3/3) ... [2018-10-27 07:45:57,124 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label26_true-unreach-call.c [2018-10-27 07:45:57,134 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 07:45:57,144 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 07:45:57,161 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 07:45:57,207 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 07:45:57,208 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 07:45:57,208 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 07:45:57,208 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 07:45:57,208 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 07:45:57,208 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 07:45:57,209 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 07:45:57,209 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 07:45:57,382 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-27 07:45:57,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-27 07:45:57,391 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:45:57,392 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 07:45:57,395 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:45:57,428 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:45:57,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1342118596, now seen corresponding path program 1 times [2018-10-27 07:45:57,432 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:45:57,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:45:57,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:45:57,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:45:57,492 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:45:57,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:45:57,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:45:57,995 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:45:57,996 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 07:45:57,996 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:45:58,003 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 07:45:58,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 07:45:58,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 07:45:58,025 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 4 states. [2018-10-27 07:46:11,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:46:11,451 INFO L93 Difference]: Finished difference Result 3234 states and 6255 transitions. [2018-10-27 07:46:11,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 07:46:11,459 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2018-10-27 07:46:11,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:46:11,499 INFO L225 Difference]: With dead ends: 3234 [2018-10-27 07:46:11,499 INFO L226 Difference]: Without dead ends: 2388 [2018-10-27 07:46:11,516 INFO L605 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 [2018-10-27 07:46:11,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2018-10-27 07:46:11,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 1604. [2018-10-27 07:46:11,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-10-27 07:46:11,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2600 transitions. [2018-10-27 07:46:11,716 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2600 transitions. Word has length 52 [2018-10-27 07:46:11,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:46:11,717 INFO L481 AbstractCegarLoop]: Abstraction has 1604 states and 2600 transitions. [2018-10-27 07:46:11,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 07:46:11,717 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2600 transitions. [2018-10-27 07:46:11,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-27 07:46:11,728 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:46:11,729 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 07:46:11,729 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:46:11,729 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:46:11,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1915502122, now seen corresponding path program 1 times [2018-10-27 07:46:11,730 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:46:11,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:46:11,731 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:46:11,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:46:11,731 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:46:11,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:46:12,112 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:46:12,112 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:46:12,112 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 07:46:12,113 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:46:12,115 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 07:46:12,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 07:46:12,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-27 07:46:12,116 INFO L87 Difference]: Start difference. First operand 1604 states and 2600 transitions. Second operand 5 states. [2018-10-27 07:46:27,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:46:27,431 INFO L93 Difference]: Finished difference Result 4873 states and 7923 transitions. [2018-10-27 07:46:27,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 07:46:27,435 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2018-10-27 07:46:27,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:46:27,459 INFO L225 Difference]: With dead ends: 4873 [2018-10-27 07:46:27,460 INFO L226 Difference]: Without dead ends: 3275 [2018-10-27 07:46:27,465 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:46:27,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3275 states. [2018-10-27 07:46:27,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3275 to 3241. [2018-10-27 07:46:27,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3241 states. [2018-10-27 07:46:27,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3241 states to 3241 states and 4816 transitions. [2018-10-27 07:46:27,594 INFO L78 Accepts]: Start accepts. Automaton has 3241 states and 4816 transitions. Word has length 132 [2018-10-27 07:46:27,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:46:27,595 INFO L481 AbstractCegarLoop]: Abstraction has 3241 states and 4816 transitions. [2018-10-27 07:46:27,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 07:46:27,595 INFO L276 IsEmpty]: Start isEmpty. Operand 3241 states and 4816 transitions. [2018-10-27 07:46:27,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-10-27 07:46:27,601 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:46:27,601 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 07:46:27,601 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:46:27,602 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:46:27,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1363927151, now seen corresponding path program 1 times [2018-10-27 07:46:27,602 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:46:27,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:46:27,603 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:46:27,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:46:27,604 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:46:27,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:46:27,896 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:46:27,896 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:46:27,896 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 07:46:27,897 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:46:27,897 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:46:27,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:46:27,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:46:27,898 INFO L87 Difference]: Start difference. First operand 3241 states and 4816 transitions. Second operand 6 states. [2018-10-27 07:46:35,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:46:35,437 INFO L93 Difference]: Finished difference Result 9802 states and 14868 transitions. [2018-10-27 07:46:35,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 07:46:35,437 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 161 [2018-10-27 07:46:35,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:46:35,478 INFO L225 Difference]: With dead ends: 9802 [2018-10-27 07:46:35,480 INFO L226 Difference]: Without dead ends: 6567 [2018-10-27 07:46:35,491 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 07:46:35,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6567 states. [2018-10-27 07:46:35,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6567 to 6493. [2018-10-27 07:46:35,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6493 states. [2018-10-27 07:46:35,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6493 states to 6493 states and 9457 transitions. [2018-10-27 07:46:35,667 INFO L78 Accepts]: Start accepts. Automaton has 6493 states and 9457 transitions. Word has length 161 [2018-10-27 07:46:35,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:46:35,668 INFO L481 AbstractCegarLoop]: Abstraction has 6493 states and 9457 transitions. [2018-10-27 07:46:35,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:46:35,668 INFO L276 IsEmpty]: Start isEmpty. Operand 6493 states and 9457 transitions. [2018-10-27 07:46:35,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-10-27 07:46:35,672 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:46:35,673 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 07:46:35,673 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:46:35,673 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:46:35,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1064317105, now seen corresponding path program 1 times [2018-10-27 07:46:35,675 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:46:35,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:46:35,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:46:35,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:46:35,677 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:46:35,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:46:36,042 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 07:46:36,193 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:46:36,193 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:46:36,193 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 07:46:36,193 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:46:36,194 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:46:36,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:46:36,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:46:36,195 INFO L87 Difference]: Start difference. First operand 6493 states and 9457 transitions. Second operand 6 states. [2018-10-27 07:46:48,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:46:48,303 INFO L93 Difference]: Finished difference Result 21850 states and 33059 transitions. [2018-10-27 07:46:48,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 07:46:48,303 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 177 [2018-10-27 07:46:48,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:46:48,384 INFO L225 Difference]: With dead ends: 21850 [2018-10-27 07:46:48,385 INFO L226 Difference]: Without dead ends: 15363 [2018-10-27 07:46:48,428 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 07:46:48,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15363 states. [2018-10-27 07:46:48,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15363 to 15280. [2018-10-27 07:46:48,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15280 states. [2018-10-27 07:46:48,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15280 states to 15280 states and 21374 transitions. [2018-10-27 07:46:48,806 INFO L78 Accepts]: Start accepts. Automaton has 15280 states and 21374 transitions. Word has length 177 [2018-10-27 07:46:48,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:46:48,807 INFO L481 AbstractCegarLoop]: Abstraction has 15280 states and 21374 transitions. [2018-10-27 07:46:48,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:46:48,807 INFO L276 IsEmpty]: Start isEmpty. Operand 15280 states and 21374 transitions. [2018-10-27 07:46:48,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-27 07:46:48,811 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:46:48,812 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 07:46:48,812 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:46:48,812 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:46:48,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1136410638, now seen corresponding path program 1 times [2018-10-27 07:46:48,813 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:46:48,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:46:48,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:46:48,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:46:48,814 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:46:48,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:46:49,118 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 07:46:49,272 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-27 07:46:49,272 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:46:49,272 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:46:49,273 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 199 with the following transitions: [2018-10-27 07:46:49,276 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2179], [2183], [2185], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2664], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-27 07:46:49,334 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:46:49,334 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:46:50,674 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 07:46:50,677 INFO L272 AbstractInterpreter]: Visited 153 different actions 300 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-27 07:46:50,725 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:46:50,725 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 07:46:51,310 INFO L227 lantSequenceWeakener]: Weakened 195 states. On average, predicates are now at 77.92% of their original sizes. [2018-10-27 07:46:51,310 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 07:46:52,131 INFO L415 sIntCurrentIteration]: We unified 197 AI predicates to 197 [2018-10-27 07:46:52,131 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 07:46:52,132 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 07:46:52,133 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [4] total 12 [2018-10-27 07:46:52,133 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:46:52,133 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 07:46:52,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 07:46:52,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 07:46:52,134 INFO L87 Difference]: Start difference. First operand 15280 states and 21374 transitions. Second operand 10 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown