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-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label38_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 14:18:21,526 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 14:18:21,528 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 14:18:21,545 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 14:18:21,546 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 14:18:21,547 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 14:18:21,552 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 14:18:21,556 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 14:18:21,562 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 14:18:21,563 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 14:18:21,564 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 14:18:21,565 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 14:18:21,565 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 14:18:21,568 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 14:18:21,570 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 14:18:21,571 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 14:18:21,577 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 14:18:21,579 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 14:18:21,584 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 14:18:21,588 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 14:18:21,589 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 14:18:21,593 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 14:18:21,596 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 14:18:21,596 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 14:18:21,596 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 14:18:21,597 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 14:18:21,598 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 14:18:21,599 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 14:18:21,599 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 14:18:21,600 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 14:18:21,600 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 14:18:21,601 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 14:18:21,601 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 14:18:21,601 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 14:18:21,602 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 14:18:21,603 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 14:18:21,603 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 14:18:21,628 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 14:18:21,628 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 14:18:21,629 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 14:18:21,629 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 14:18:21,630 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 14:18:21,630 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 14:18:21,630 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 14:18:21,630 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 14:18:21,630 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 14:18:21,631 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 14:18:21,631 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 14:18:21,631 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 14:18:21,632 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 14:18:21,632 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 14:18:21,632 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 14:18:21,632 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 14:18:21,632 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 14:18:21,633 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 14:18:21,633 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 14:18:21,633 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 14:18:21,633 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 14:18:21,633 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 14:18:21,634 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 14:18:21,634 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 14:18:21,634 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 14:18:21,634 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 14:18:21,634 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 14:18:21,635 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 14:18:21,635 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 14:18:21,635 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 14:18:21,635 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 14:18:21,635 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 14:18:21,636 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 14:18:21,636 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 14:18:21,678 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 14:18:21,691 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 14:18:21,695 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 14:18:21,697 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 14:18:21,697 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 14:18:21,698 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label38_true-unreach-call.c [2018-10-27 14:18:21,756 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/df3164966/900989b1411d4f65b643392f320a7603/FLAGc8b406822 [2018-10-27 14:18:22,517 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 14:18:22,518 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label38_true-unreach-call.c [2018-10-27 14:18:22,553 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/df3164966/900989b1411d4f65b643392f320a7603/FLAGc8b406822 [2018-10-27 14:18:22,569 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/df3164966/900989b1411d4f65b643392f320a7603 [2018-10-27 14:18:22,581 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 14:18:22,583 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 14:18:22,584 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 14:18:22,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 14:18:22,589 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 14:18:22,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:18:22" (1/1) ... [2018-10-27 14:18:22,593 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@689f4e6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:18:22, skipping insertion in model container [2018-10-27 14:18:22,593 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:18:22" (1/1) ... [2018-10-27 14:18:22,605 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 14:18:22,796 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 14:18:24,247 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:18:24,258 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 14:18:25,063 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:18:25,099 INFO L193 MainTranslator]: Completed translation [2018-10-27 14:18:25,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:18:25 WrapperNode [2018-10-27 14:18:25,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 14:18:25,101 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 14:18:25,101 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 14:18:25,102 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 14:18:25,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:18:25" (1/1) ... [2018-10-27 14:18:25,184 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:18:25" (1/1) ... [2018-10-27 14:18:25,676 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 14:18:25,677 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 14:18:25,677 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 14:18:25,678 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 14:18:25,689 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:18:25" (1/1) ... [2018-10-27 14:18:25,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:18:25" (1/1) ... [2018-10-27 14:18:25,729 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:18:25" (1/1) ... [2018-10-27 14:18:25,730 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:18:25" (1/1) ... [2018-10-27 14:18:25,862 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:18:25" (1/1) ... [2018-10-27 14:18:25,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:18:25" (1/1) ... [2018-10-27 14:18:25,939 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:18:25" (1/1) ... [2018-10-27 14:18:25,984 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 14:18:25,984 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 14:18:25,984 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 14:18:25,985 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 14:18:25,986 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:18:25" (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 14:18:26,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 14:18:26,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 14:18:26,057 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-27 14:18:26,058 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-27 14:18:26,058 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 14:18:26,059 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 14:18:26,059 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 14:18:26,059 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 14:18:26,059 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 14:18:26,059 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 14:18:26,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 14:18:26,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 14:18:26,060 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 14:18:26,061 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 14:18:36,364 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 14:18:36,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:18:36 BoogieIcfgContainer [2018-10-27 14:18:36,365 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 14:18:36,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 14:18:36,366 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 14:18:36,373 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 14:18:36,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:18:22" (1/3) ... [2018-10-27 14:18:36,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f81bd3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:18:36, skipping insertion in model container [2018-10-27 14:18:36,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:18:25" (2/3) ... [2018-10-27 14:18:36,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f81bd3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:18:36, skipping insertion in model container [2018-10-27 14:18:36,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:18:36" (3/3) ... [2018-10-27 14:18:36,379 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label38_true-unreach-call.c [2018-10-27 14:18:36,388 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 14:18:36,397 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 14:18:36,412 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 14:18:36,470 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 14:18:36,471 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 14:18:36,471 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 14:18:36,471 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 14:18:36,471 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 14:18:36,471 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 14:18:36,472 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 14:18:36,472 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 14:18:36,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-27 14:18:36,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-27 14:18:36,532 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:18:36,534 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:18:36,536 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:18:36,545 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:18:36,545 INFO L82 PathProgramCache]: Analyzing trace with hash 437838356, now seen corresponding path program 1 times [2018-10-27 14:18:36,548 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:18:36,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:18:36,600 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:18:36,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:18:36,600 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:18:36,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:18:37,098 WARN L179 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 14:18:37,216 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 14:18:37,218 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:18:37,219 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 14:18:37,219 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:18:37,226 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 14:18:37,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 14:18:37,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 14:18:37,244 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-10-27 14:18:48,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:18:48,287 INFO L93 Difference]: Finished difference Result 3087 states and 5699 transitions. [2018-10-27 14:18:48,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 14:18:48,290 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2018-10-27 14:18:48,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:18:48,329 INFO L225 Difference]: With dead ends: 3087 [2018-10-27 14:18:48,330 INFO L226 Difference]: Without dead ends: 1965 [2018-10-27 14:18:48,340 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 14:18:48,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2018-10-27 14:18:48,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1959. [2018-10-27 14:18:48,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2018-10-27 14:18:48,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3512 transitions. [2018-10-27 14:18:48,504 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3512 transitions. Word has length 66 [2018-10-27 14:18:48,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:18:48,505 INFO L481 AbstractCegarLoop]: Abstraction has 1959 states and 3512 transitions. [2018-10-27 14:18:48,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 14:18:48,505 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3512 transitions. [2018-10-27 14:18:48,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-27 14:18:48,514 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:18:48,514 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 14:18:48,515 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:18:48,515 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:18:48,515 INFO L82 PathProgramCache]: Analyzing trace with hash 124498118, now seen corresponding path program 1 times [2018-10-27 14:18:48,515 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:18:48,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:18:48,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:18:48,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:18:48,517 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:18:48,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:18:48,942 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:18:48,942 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:18:48,942 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 14:18:48,943 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:18:48,945 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 14:18:48,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 14:18:48,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 14:18:48,945 INFO L87 Difference]: Start difference. First operand 1959 states and 3512 transitions. Second operand 6 states. [2018-10-27 14:19:03,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:19:03,639 INFO L93 Difference]: Finished difference Result 5634 states and 10287 transitions. [2018-10-27 14:19:03,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 14:19:03,640 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-10-27 14:19:03,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:19:03,665 INFO L225 Difference]: With dead ends: 5634 [2018-10-27 14:19:03,665 INFO L226 Difference]: Without dead ends: 3681 [2018-10-27 14:19:03,673 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 14:19:03,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3681 states. [2018-10-27 14:19:03,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3681 to 3650. [2018-10-27 14:19:03,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3650 states. [2018-10-27 14:19:03,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 5957 transitions. [2018-10-27 14:19:03,777 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 5957 transitions. Word has length 143 [2018-10-27 14:19:03,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:19:03,778 INFO L481 AbstractCegarLoop]: Abstraction has 3650 states and 5957 transitions. [2018-10-27 14:19:03,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 14:19:03,778 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 5957 transitions. [2018-10-27 14:19:03,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-27 14:19:03,784 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:19:03,784 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 14:19:03,784 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:19:03,785 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:19:03,785 INFO L82 PathProgramCache]: Analyzing trace with hash -738024772, now seen corresponding path program 1 times [2018-10-27 14:19:03,785 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:19:03,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:19:03,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:19:03,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:19:03,787 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:19:03,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:19:04,115 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:19:04,116 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:19:04,116 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 14:19:04,116 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:19:04,117 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 14:19:04,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 14:19:04,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 14:19:04,118 INFO L87 Difference]: Start difference. First operand 3650 states and 5957 transitions. Second operand 6 states. [2018-10-27 14:19:14,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:19:14,733 INFO L93 Difference]: Finished difference Result 12385 states and 20601 transitions. [2018-10-27 14:19:14,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 14:19:14,734 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 162 [2018-10-27 14:19:14,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:19:14,784 INFO L225 Difference]: With dead ends: 12385 [2018-10-27 14:19:14,784 INFO L226 Difference]: Without dead ends: 8741 [2018-10-27 14:19:14,806 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 14:19:14,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8741 states. [2018-10-27 14:19:15,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8741 to 8684. [2018-10-27 14:19:15,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8684 states. [2018-10-27 14:19:15,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8684 states to 8684 states and 12864 transitions. [2018-10-27 14:19:15,029 INFO L78 Accepts]: Start accepts. Automaton has 8684 states and 12864 transitions. Word has length 162 [2018-10-27 14:19:15,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:19:15,030 INFO L481 AbstractCegarLoop]: Abstraction has 8684 states and 12864 transitions. [2018-10-27 14:19:15,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 14:19:15,030 INFO L276 IsEmpty]: Start isEmpty. Operand 8684 states and 12864 transitions. [2018-10-27 14:19:15,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-27 14:19:15,035 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:19:15,035 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 14:19:15,036 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:19:15,036 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:19:15,036 INFO L82 PathProgramCache]: Analyzing trace with hash -645382492, now seen corresponding path program 1 times [2018-10-27 14:19:15,036 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:19:15,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:19:15,037 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:19:15,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:19:15,038 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:19:15,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:19:15,305 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 14:19:15,524 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:19:15,525 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:19:15,525 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 14:19:15,525 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:19:15,526 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 14:19:15,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 14:19:15,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 14:19:15,527 INFO L87 Difference]: Start difference. First operand 8684 states and 12864 transitions. Second operand 6 states. [2018-10-27 14:19:27,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:19:27,358 INFO L93 Difference]: Finished difference Result 22909 states and 34919 transitions. [2018-10-27 14:19:27,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 14:19:27,361 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 174 [2018-10-27 14:19:27,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:19:27,431 INFO L225 Difference]: With dead ends: 22909 [2018-10-27 14:19:27,431 INFO L226 Difference]: Without dead ends: 14231 [2018-10-27 14:19:27,470 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 14:19:27,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14231 states. [2018-10-27 14:19:27,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14231 to 14057. [2018-10-27 14:19:27,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14057 states. [2018-10-27 14:19:27,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14057 states to 14057 states and 19960 transitions. [2018-10-27 14:19:27,829 INFO L78 Accepts]: Start accepts. Automaton has 14057 states and 19960 transitions. Word has length 174 [2018-10-27 14:19:27,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:19:27,830 INFO L481 AbstractCegarLoop]: Abstraction has 14057 states and 19960 transitions. [2018-10-27 14:19:27,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 14:19:27,830 INFO L276 IsEmpty]: Start isEmpty. Operand 14057 states and 19960 transitions. [2018-10-27 14:19:27,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-10-27 14:19:27,842 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:19:27,842 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:19:27,842 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:19:27,843 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:19:27,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1546539748, now seen corresponding path program 1 times [2018-10-27 14:19:27,843 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:19:27,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:19:27,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:19:27,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:19:27,844 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:19:27,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:19:28,200 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 118 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 14:19:28,201 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 14:19:28,202 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 14:19:28,203 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 230 with the following transitions: [2018-10-27 14:19:28,207 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3027], [3035], [3043], [3051], [3055], [3057], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3128], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3225], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-27 14:19:28,272 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 14:19:28,272 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 14:19:28,910 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 14:19:28,912 INFO L272 AbstractInterpreter]: Visited 96 different actions 96 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-27 14:19:28,959 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:19:28,959 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 14:19:29,996 INFO L227 lantSequenceWeakener]: Weakened 207 states. On average, predicates are now at 71.9% of their original sizes. [2018-10-27 14:19:29,997 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 14:19:30,252 INFO L415 sIntCurrentIteration]: We unified 228 AI predicates to 228 [2018-10-27 14:19:30,253 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 14:19:30,254 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 14:19:30,254 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [5] total 12 [2018-10-27 14:19:30,254 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:19:30,255 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 14:19:30,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 14:19:30,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-10-27 14:19:30,255 INFO L87 Difference]: Start difference. First operand 14057 states and 19960 transitions. Second operand 9 states. [2018-10-27 14:19:34,727 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown