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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label47_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 08:54:06,468 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 08:54:06,470 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 08:54:06,487 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 08:54:06,488 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 08:54:06,489 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 08:54:06,490 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 08:54:06,493 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 08:54:06,498 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 08:54:06,500 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 08:54:06,502 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 08:54:06,502 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 08:54:06,503 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 08:54:06,504 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 08:54:06,505 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 08:54:06,506 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 08:54:06,507 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 08:54:06,511 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 08:54:06,513 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 08:54:06,517 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 08:54:06,519 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 08:54:06,520 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 08:54:06,522 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 08:54:06,523 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 08:54:06,523 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 08:54:06,525 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 08:54:06,526 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 08:54:06,527 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 08:54:06,528 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 08:54:06,532 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 08:54:06,532 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 08:54:06,533 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 08:54:06,533 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 08:54:06,533 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 08:54:06,536 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 08:54:06,536 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 08:54:06,537 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 08:54:06,567 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 08:54:06,568 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 08:54:06,569 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 08:54:06,570 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 08:54:06,570 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 08:54:06,570 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 08:54:06,570 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 08:54:06,570 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 08:54:06,571 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 08:54:06,571 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 08:54:06,571 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 08:54:06,571 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 08:54:06,571 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 08:54:06,572 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 08:54:06,573 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 08:54:06,573 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 08:54:06,573 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 08:54:06,574 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 08:54:06,574 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 08:54:06,574 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 08:54:06,574 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 08:54:06,574 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 08:54:06,576 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 08:54:06,577 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 08:54:06,577 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 08:54:06,577 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 08:54:06,577 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 08:54:06,577 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 08:54:06,578 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 08:54:06,578 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 08:54:06,578 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 08:54:06,578 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 08:54:06,579 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 08:54:06,579 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 08:54:06,579 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 08:54:06,579 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 08:54:06,644 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 08:54:06,662 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 08:54:06,667 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 08:54:06,669 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 08:54:06,669 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 08:54:06,670 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label47_true-unreach-call.c [2018-11-07 08:54:06,745 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b22d37b3/1bf16064854143c797ad97157efcec43/FLAG2eb8d136c [2018-11-07 08:54:07,541 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 08:54:07,542 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label47_true-unreach-call.c [2018-11-07 08:54:07,586 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b22d37b3/1bf16064854143c797ad97157efcec43/FLAG2eb8d136c [2018-11-07 08:54:07,607 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b22d37b3/1bf16064854143c797ad97157efcec43 [2018-11-07 08:54:07,620 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 08:54:07,623 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 08:54:07,624 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 08:54:07,624 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 08:54:07,631 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 08:54:07,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:54:07" (1/1) ... [2018-11-07 08:54:07,636 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@596e7265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:07, skipping insertion in model container [2018-11-07 08:54:07,636 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:54:07" (1/1) ... [2018-11-07 08:54:07,648 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 08:54:07,860 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 08:54:09,499 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:54:09,503 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 08:54:10,259 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:54:10,303 INFO L193 MainTranslator]: Completed translation [2018-11-07 08:54:10,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:10 WrapperNode [2018-11-07 08:54:10,304 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 08:54:10,305 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 08:54:10,305 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 08:54:10,305 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 08:54:10,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:10" (1/1) ... [2018-11-07 08:54:10,749 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:10" (1/1) ... [2018-11-07 08:54:10,758 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 08:54:10,759 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 08:54:10,759 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 08:54:10,759 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 08:54:10,771 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:10" (1/1) ... [2018-11-07 08:54:10,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:10" (1/1) ... [2018-11-07 08:54:10,796 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:10" (1/1) ... [2018-11-07 08:54:10,796 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:10" (1/1) ... [2018-11-07 08:54:10,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:10" (1/1) ... [2018-11-07 08:54:10,942 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:10" (1/1) ... [2018-11-07 08:54:10,972 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:10" (1/1) ... [2018-11-07 08:54:11,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 08:54:11,004 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 08:54:11,004 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 08:54:11,004 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 08:54:11,005 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 08:54:11,069 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 08:54:11,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 08:54:11,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 08:54:11,070 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 08:54:11,070 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 08:54:11,071 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 08:54:11,071 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 08:54:11,071 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 08:54:11,071 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 08:54:11,071 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 08:54:11,072 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 08:54:11,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 08:54:11,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 08:54:11,073 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 08:54:11,073 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 08:54:21,768 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 08:54:21,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:54:21 BoogieIcfgContainer [2018-11-07 08:54:21,769 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 08:54:21,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 08:54:21,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 08:54:21,773 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 08:54:21,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:54:07" (1/3) ... [2018-11-07 08:54:21,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65dba608 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:54:21, skipping insertion in model container [2018-11-07 08:54:21,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:54:10" (2/3) ... [2018-11-07 08:54:21,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65dba608 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:54:21, skipping insertion in model container [2018-11-07 08:54:21,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:54:21" (3/3) ... [2018-11-07 08:54:21,777 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label47_true-unreach-call.c [2018-11-07 08:54:21,788 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 08:54:21,798 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 08:54:21,816 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 08:54:21,866 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 08:54:21,867 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 08:54:21,867 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 08:54:21,867 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 08:54:21,867 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 08:54:21,867 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 08:54:21,868 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 08:54:21,868 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 08:54:21,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-07 08:54:21,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-11-07 08:54:21,933 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:54:21,935 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] [2018-11-07 08:54:21,937 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:54:21,945 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:54:21,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1678740780, now seen corresponding path program 1 times [2018-11-07 08:54:21,947 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:54:22,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:54:22,003 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:54:22,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:54:22,003 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:54:22,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:54:22,458 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:54:22,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:54:22,627 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:54:22,628 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 08:54:22,628 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:54:22,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 08:54:22,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 08:54:22,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 08:54:22,654 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-11-07 08:54:31,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:54:31,183 INFO L93 Difference]: Finished difference Result 3104 states and 5729 transitions. [2018-11-07 08:54:31,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 08:54:31,186 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2018-11-07 08:54:31,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:54:31,219 INFO L225 Difference]: With dead ends: 3104 [2018-11-07 08:54:31,220 INFO L226 Difference]: Without dead ends: 1982 [2018-11-07 08:54:31,230 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 08:54:31,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1982 states. [2018-11-07 08:54:31,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1982 to 1965. [2018-11-07 08:54:31,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2018-11-07 08:54:31,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 3515 transitions. [2018-11-07 08:54:31,431 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 3515 transitions. Word has length 50 [2018-11-07 08:54:31,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:54:31,431 INFO L480 AbstractCegarLoop]: Abstraction has 1965 states and 3515 transitions. [2018-11-07 08:54:31,433 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 08:54:31,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 3515 transitions. [2018-11-07 08:54:31,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-11-07 08:54:31,445 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:54:31,447 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:54:31,449 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:54:31,449 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:54:31,449 INFO L82 PathProgramCache]: Analyzing trace with hash 307608752, now seen corresponding path program 1 times [2018-11-07 08:54:31,449 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:54:31,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:54:31,451 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:54:31,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:54:31,452 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:54:31,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:54:31,843 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:54:31,923 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:54:31,923 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:54:31,924 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 08:54:31,924 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:54:31,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 08:54:31,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 08:54:31,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 08:54:31,927 INFO L87 Difference]: Start difference. First operand 1965 states and 3515 transitions. Second operand 5 states. [2018-11-07 08:54:44,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:54:44,780 INFO L93 Difference]: Finished difference Result 5645 states and 10294 transitions. [2018-11-07 08:54:44,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 08:54:44,781 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2018-11-07 08:54:44,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:54:44,805 INFO L225 Difference]: With dead ends: 5645 [2018-11-07 08:54:44,805 INFO L226 Difference]: Without dead ends: 3686 [2018-11-07 08:54:44,813 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 08:54:44,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3686 states. [2018-11-07 08:54:44,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3686 to 3654. [2018-11-07 08:54:44,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3654 states. [2018-11-07 08:54:44,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3654 states to 3654 states and 5960 transitions. [2018-11-07 08:54:44,933 INFO L78 Accepts]: Start accepts. Automaton has 3654 states and 5960 transitions. Word has length 120 [2018-11-07 08:54:44,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:54:44,934 INFO L480 AbstractCegarLoop]: Abstraction has 3654 states and 5960 transitions. [2018-11-07 08:54:44,934 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 08:54:44,934 INFO L276 IsEmpty]: Start isEmpty. Operand 3654 states and 5960 transitions. [2018-11-07 08:54:44,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-11-07 08:54:44,946 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:54:44,947 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:54:44,947 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:54:44,947 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:54:44,948 INFO L82 PathProgramCache]: Analyzing trace with hash 778030412, now seen corresponding path program 1 times [2018-11-07 08:54:44,950 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:54:44,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:54:44,951 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:54:44,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:54:44,951 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:54:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:54:45,140 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:54:45,140 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:54:45,141 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 08:54:45,141 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:54:45,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 08:54:45,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 08:54:45,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 08:54:45,142 INFO L87 Difference]: Start difference. First operand 3654 states and 5960 transitions. Second operand 5 states. [2018-11-07 08:54:55,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:54:55,075 INFO L93 Difference]: Finished difference Result 10920 states and 18331 transitions. [2018-11-07 08:54:55,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 08:54:55,076 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2018-11-07 08:54:55,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:54:55,121 INFO L225 Difference]: With dead ends: 10920 [2018-11-07 08:54:55,122 INFO L226 Difference]: Without dead ends: 7272 [2018-11-07 08:54:55,137 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 08:54:55,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7272 states. [2018-11-07 08:54:55,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7272 to 7117. [2018-11-07 08:54:55,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7117 states. [2018-11-07 08:54:55,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7117 states to 7117 states and 10838 transitions. [2018-11-07 08:54:55,359 INFO L78 Accepts]: Start accepts. Automaton has 7117 states and 10838 transitions. Word has length 122 [2018-11-07 08:54:55,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:54:55,360 INFO L480 AbstractCegarLoop]: Abstraction has 7117 states and 10838 transitions. [2018-11-07 08:54:55,361 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 08:54:55,361 INFO L276 IsEmpty]: Start isEmpty. Operand 7117 states and 10838 transitions. [2018-11-07 08:54:55,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-11-07 08:54:55,368 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:54:55,369 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:54:55,369 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:54:55,369 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:54:55,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1974086272, now seen corresponding path program 1 times [2018-11-07 08:54:55,370 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:54:55,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:54:55,371 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:54:55,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:54:55,371 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:54:55,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:54:55,600 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:54:55,601 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:54:55,601 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 08:54:55,601 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:54:55,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 08:54:55,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 08:54:55,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 08:54:55,602 INFO L87 Difference]: Start difference. First operand 7117 states and 10838 transitions. Second operand 3 states. [2018-11-07 08:55:01,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:55:01,099 INFO L93 Difference]: Finished difference Result 20867 states and 33055 transitions. [2018-11-07 08:55:01,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 08:55:01,099 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 144 [2018-11-07 08:55:01,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:55:01,183 INFO L225 Difference]: With dead ends: 20867 [2018-11-07 08:55:01,183 INFO L226 Difference]: Without dead ends: 13756 [2018-11-07 08:55:01,229 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 [2018-11-07 08:55:01,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13756 states. [2018-11-07 08:55:01,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13756 to 13750. [2018-11-07 08:55:01,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13750 states. [2018-11-07 08:55:01,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13750 states to 13750 states and 20108 transitions. [2018-11-07 08:55:01,630 INFO L78 Accepts]: Start accepts. Automaton has 13750 states and 20108 transitions. Word has length 144 [2018-11-07 08:55:01,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:55:01,632 INFO L480 AbstractCegarLoop]: Abstraction has 13750 states and 20108 transitions. [2018-11-07 08:55:01,632 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 08:55:01,632 INFO L276 IsEmpty]: Start isEmpty. Operand 13750 states and 20108 transitions. [2018-11-07 08:55:01,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-11-07 08:55:01,643 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:55:01,643 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 08:55:01,647 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:55:01,648 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:55:01,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1974647027, now seen corresponding path program 1 times [2018-11-07 08:55:01,648 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:55:01,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:55:01,649 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:55:01,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:55:01,650 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:55:01,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:55:02,151 WARN L179 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:55:02,290 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 86 proven. 82 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 08:55:02,291 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:55:02,291 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:55:02,292 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 241 with the following transitions: [2018-11-07 08:55:02,294 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], [2927], [2929], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3202], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3273], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 08:55:02,347 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:55:02,348 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:55:02,942 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 08:55:02,944 INFO L272 AbstractInterpreter]: Visited 108 different actions 108 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 08:55:02,966 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:55:02,966 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 08:55:03,481 INFO L227 lantSequenceWeakener]: Weakened 231 states. On average, predicates are now at 71.3% of their original sizes. [2018-11-07 08:55:03,482 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 08:55:03,700 INFO L415 sIntCurrentIteration]: We unified 239 AI predicates to 239 [2018-11-07 08:55:03,701 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 08:55:03,702 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 08:55:03,702 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-11-07 08:55:03,702 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:55:03,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:55:03,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:55:03,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:55:03,704 INFO L87 Difference]: Start difference. First operand 13750 states and 20108 transitions. Second operand 6 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown