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/Problem18_label53_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 08:47:39,542 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 08:47:39,544 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 08:47:39,556 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 08:47:39,557 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 08:47:39,558 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 08:47:39,559 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 08:47:39,561 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 08:47:39,563 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 08:47:39,565 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 08:47:39,567 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 08:47:39,568 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 08:47:39,568 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 08:47:39,570 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 08:47:39,571 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 08:47:39,576 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 08:47:39,577 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 08:47:39,579 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 08:47:39,581 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 08:47:39,582 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 08:47:39,584 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 08:47:39,585 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 08:47:39,588 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 08:47:39,588 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 08:47:39,588 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 08:47:39,590 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 08:47:39,591 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 08:47:39,591 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 08:47:39,592 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 08:47:39,593 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 08:47:39,594 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 08:47:39,594 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 08:47:39,595 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 08:47:39,595 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 08:47:39,596 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 08:47:39,597 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 08:47:39,597 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 08:47:39,628 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 08:47:39,628 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 08:47:39,629 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 08:47:39,629 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 08:47:39,629 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 08:47:39,630 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 08:47:39,630 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 08:47:39,630 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 08:47:39,630 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 08:47:39,630 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 08:47:39,630 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 08:47:39,631 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 08:47:39,631 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 08:47:39,632 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 08:47:39,632 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 08:47:39,633 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 08:47:39,633 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 08:47:39,633 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 08:47:39,633 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 08:47:39,633 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 08:47:39,634 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 08:47:39,635 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 08:47:39,635 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 08:47:39,635 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 08:47:39,635 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 08:47:39,636 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 08:47:39,636 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:47:39,636 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 08:47:39,636 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 08:47:39,637 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 08:47:39,637 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 08:47:39,637 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 08:47:39,637 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 08:47:39,637 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 08:47:39,637 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 08:47:39,638 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 08:47:39,682 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 08:47:39,695 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 08:47:39,699 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 08:47:39,700 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 08:47:39,701 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 08:47:39,702 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label53_true-unreach-call.c [2018-10-27 08:47:39,758 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ad593b2f9/bf62e2d12a1747b9869fd400bce51102/FLAG8baa87544 [2018-10-27 08:47:40,505 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 08:47:40,506 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label53_true-unreach-call.c [2018-10-27 08:47:40,536 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ad593b2f9/bf62e2d12a1747b9869fd400bce51102/FLAG8baa87544 [2018-10-27 08:47:40,559 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ad593b2f9/bf62e2d12a1747b9869fd400bce51102 [2018-10-27 08:47:40,572 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 08:47:40,576 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 08:47:40,578 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 08:47:40,578 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 08:47:40,586 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 08:47:40,587 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:47:40" (1/1) ... [2018-10-27 08:47:40,592 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b326c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:47:40, skipping insertion in model container [2018-10-27 08:47:40,592 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:47:40" (1/1) ... [2018-10-27 08:47:40,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 08:47:40,747 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 08:47:41,894 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:47:41,900 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 08:47:42,448 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:47:42,480 INFO L193 MainTranslator]: Completed translation [2018-10-27 08:47:42,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:47:42 WrapperNode [2018-10-27 08:47:42,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 08:47:42,482 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 08:47:42,482 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 08:47:42,483 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 08:47:42,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:47:42" (1/1) ... [2018-10-27 08:47:42,565 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:47:42" (1/1) ... [2018-10-27 08:47:42,900 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 08:47:42,900 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 08:47:42,901 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 08:47:42,901 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 08:47:42,913 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:47:42" (1/1) ... [2018-10-27 08:47:42,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:47:42" (1/1) ... [2018-10-27 08:47:42,934 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:47:42" (1/1) ... [2018-10-27 08:47:42,934 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:47:42" (1/1) ... [2018-10-27 08:47:43,013 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:47:42" (1/1) ... [2018-10-27 08:47:43,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:47:42" (1/1) ... [2018-10-27 08:47:43,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:47:42" (1/1) ... [2018-10-27 08:47:43,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 08:47:43,107 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 08:47:43,107 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 08:47:43,107 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 08:47:43,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:47:42" (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 08:47:43,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 08:47:43,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 08:47:43,185 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 08:47:43,185 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 08:47:43,185 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 08:47:43,185 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 08:47:43,185 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 08:47:43,186 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 08:47:43,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 08:47:43,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 08:47:43,186 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 08:47:43,186 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 08:47:52,033 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 08:47:52,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:47:52 BoogieIcfgContainer [2018-10-27 08:47:52,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 08:47:52,035 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 08:47:52,035 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 08:47:52,039 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 08:47:52,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:47:40" (1/3) ... [2018-10-27 08:47:52,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f4d0f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:47:52, skipping insertion in model container [2018-10-27 08:47:52,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:47:42" (2/3) ... [2018-10-27 08:47:52,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f4d0f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:47:52, skipping insertion in model container [2018-10-27 08:47:52,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:47:52" (3/3) ... [2018-10-27 08:47:52,042 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label53_true-unreach-call.c [2018-10-27 08:47:52,053 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 08:47:52,063 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 08:47:52,082 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 08:47:52,128 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 08:47:52,128 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 08:47:52,128 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 08:47:52,129 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 08:47:52,129 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 08:47:52,129 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 08:47:52,129 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 08:47:52,129 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 08:47:52,181 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-27 08:47:52,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-27 08:47:52,191 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:47:52,192 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] [2018-10-27 08:47:52,194 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:47:52,200 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:47:52,200 INFO L82 PathProgramCache]: Analyzing trace with hash 861122892, now seen corresponding path program 1 times [2018-10-27 08:47:52,203 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:47:52,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:47:52,254 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:47:52,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:47:52,254 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:47:52,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:47:52,716 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:47:52,857 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 08:47:52,863 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:47:52,864 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 08:47:52,864 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:47:52,873 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 08:47:52,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 08:47:52,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 08:47:52,889 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-10-27 08:47:59,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:47:59,982 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-10-27 08:47:59,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 08:47:59,986 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2018-10-27 08:47:59,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:48:00,023 INFO L225 Difference]: With dead ends: 2251 [2018-10-27 08:48:00,024 INFO L226 Difference]: Without dead ends: 1474 [2018-10-27 08:48:00,036 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 08:48:00,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-10-27 08:48:00,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-10-27 08:48:00,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-27 08:48:00,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2721 transitions. [2018-10-27 08:48:00,197 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2721 transitions. Word has length 40 [2018-10-27 08:48:00,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:48:00,198 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2721 transitions. [2018-10-27 08:48:00,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 08:48:00,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2721 transitions. [2018-10-27 08:48:00,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-10-27 08:48:00,209 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:48:00,211 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:48:00,211 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:48:00,211 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:48:00,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1815461261, now seen corresponding path program 1 times [2018-10-27 08:48:00,212 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:48:00,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:48:00,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:48:00,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:48:00,213 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:48:00,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:48:00,590 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:48:00,591 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:48:00,591 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:48:00,591 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:48:00,593 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:48:00,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:48:00,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:48:00,594 INFO L87 Difference]: Start difference. First operand 1474 states and 2721 transitions. Second operand 6 states. [2018-10-27 08:48:12,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:48:12,008 INFO L93 Difference]: Finished difference Result 4419 states and 8244 transitions. [2018-10-27 08:48:12,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:48:12,010 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2018-10-27 08:48:12,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:48:12,035 INFO L225 Difference]: With dead ends: 4419 [2018-10-27 08:48:12,036 INFO L226 Difference]: Without dead ends: 2951 [2018-10-27 08:48:12,042 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 08:48:12,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-10-27 08:48:12,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2928. [2018-10-27 08:48:12,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2928 states. [2018-10-27 08:48:12,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 5087 transitions. [2018-10-27 08:48:12,145 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 5087 transitions. Word has length 129 [2018-10-27 08:48:12,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:48:12,146 INFO L481 AbstractCegarLoop]: Abstraction has 2928 states and 5087 transitions. [2018-10-27 08:48:12,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:48:12,146 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 5087 transitions. [2018-10-27 08:48:12,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-10-27 08:48:12,153 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:48:12,154 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:48:12,154 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:48:12,154 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:48:12,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1289606006, now seen corresponding path program 1 times [2018-10-27 08:48:12,155 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:48:12,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:48:12,156 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:48:12,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:48:12,156 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:48:12,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:48:12,472 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:48:12,472 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:48:12,472 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:48:12,473 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:48:12,473 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:48:12,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:48:12,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:48:12,474 INFO L87 Difference]: Start difference. First operand 2928 states and 5087 transitions. Second operand 6 states. [2018-10-27 08:48:21,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:48:21,426 INFO L93 Difference]: Finished difference Result 10194 states and 17948 transitions. [2018-10-27 08:48:21,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:48:21,427 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 176 [2018-10-27 08:48:21,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:48:21,476 INFO L225 Difference]: With dead ends: 10194 [2018-10-27 08:48:21,476 INFO L226 Difference]: Without dead ends: 7272 [2018-10-27 08:48:21,494 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 08:48:21,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7272 states. [2018-10-27 08:48:21,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7272 to 7208. [2018-10-27 08:48:21,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7208 states. [2018-10-27 08:48:21,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7208 states to 7208 states and 11881 transitions. [2018-10-27 08:48:21,718 INFO L78 Accepts]: Start accepts. Automaton has 7208 states and 11881 transitions. Word has length 176 [2018-10-27 08:48:21,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:48:21,718 INFO L481 AbstractCegarLoop]: Abstraction has 7208 states and 11881 transitions. [2018-10-27 08:48:21,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:48:21,719 INFO L276 IsEmpty]: Start isEmpty. Operand 7208 states and 11881 transitions. [2018-10-27 08:48:21,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-27 08:48:21,724 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:48:21,726 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:48:21,726 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:48:21,726 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:48:21,727 INFO L82 PathProgramCache]: Analyzing trace with hash -680969838, now seen corresponding path program 1 times [2018-10-27 08:48:21,727 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:48:21,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:48:21,728 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:48:21,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:48:21,729 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:48:21,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:48:22,011 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:48:22,266 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:48:22,267 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:48:22,267 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:48:22,267 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:48:22,268 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:48:22,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:48:22,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:48:22,269 INFO L87 Difference]: Start difference. First operand 7208 states and 11881 transitions. Second operand 6 states. [2018-10-27 08:48:28,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:48:28,217 INFO L93 Difference]: Finished difference Result 17365 states and 29107 transitions. [2018-10-27 08:48:28,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:48:28,218 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 178 [2018-10-27 08:48:28,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:48:28,277 INFO L225 Difference]: With dead ends: 17365 [2018-10-27 08:48:28,277 INFO L226 Difference]: Without dead ends: 10163 [2018-10-27 08:48:28,303 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 08:48:28,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10163 states. [2018-10-27 08:48:28,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10163 to 10108. [2018-10-27 08:48:28,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10108 states. [2018-10-27 08:48:28,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10108 states to 10108 states and 14258 transitions. [2018-10-27 08:48:28,564 INFO L78 Accepts]: Start accepts. Automaton has 10108 states and 14258 transitions. Word has length 178 [2018-10-27 08:48:28,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:48:28,564 INFO L481 AbstractCegarLoop]: Abstraction has 10108 states and 14258 transitions. [2018-10-27 08:48:28,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:48:28,565 INFO L276 IsEmpty]: Start isEmpty. Operand 10108 states and 14258 transitions. [2018-10-27 08:48:28,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-10-27 08:48:28,572 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:48:28,572 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 08:48:28,573 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:48:28,573 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:48:28,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1490762096, now seen corresponding path program 1 times [2018-10-27 08:48:28,573 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:48:28,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:48:28,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:48:28,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:48:28,574 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:48:28,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:48:28,858 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-10-27 08:48:28,858 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:48:28,858 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:48:28,859 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:48:28,859 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:48:28,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:48:28,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:48:28,860 INFO L87 Difference]: Start difference. First operand 10108 states and 14258 transitions. Second operand 4 states. [2018-10-27 08:48:36,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:48:36,447 INFO L93 Difference]: Finished difference Result 28819 states and 41884 transitions. [2018-10-27 08:48:36,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:48:36,454 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 236 [2018-10-27 08:48:36,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:48:36,549 INFO L225 Difference]: With dead ends: 28819 [2018-10-27 08:48:36,550 INFO L226 Difference]: Without dead ends: 18717 [2018-10-27 08:48:36,595 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:48:36,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18717 states. [2018-10-27 08:48:36,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18717 to 18717. [2018-10-27 08:48:36,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18717 states. [2018-10-27 08:48:36,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18717 states to 18717 states and 26000 transitions. [2018-10-27 08:48:36,983 INFO L78 Accepts]: Start accepts. Automaton has 18717 states and 26000 transitions. Word has length 236 [2018-10-27 08:48:36,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:48:36,984 INFO L481 AbstractCegarLoop]: Abstraction has 18717 states and 26000 transitions. [2018-10-27 08:48:36,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:48:36,984 INFO L276 IsEmpty]: Start isEmpty. Operand 18717 states and 26000 transitions. [2018-10-27 08:48:37,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-10-27 08:48:37,022 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:48:37,022 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:48:37,023 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:48:37,023 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:48:37,024 INFO L82 PathProgramCache]: Analyzing trace with hash -205377436, now seen corresponding path program 1 times [2018-10-27 08:48:37,024 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:48:37,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:48:37,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:48:37,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:48:37,025 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:48:37,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:48:37,328 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:48:37,466 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 66 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 08:48:37,466 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:48:37,466 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:48:37,468 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 391 with the following transitions: [2018-10-27 08:48:37,470 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1843], [1845], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2124], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [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], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2948], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-27 08:48:37,531 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:48:37,531 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:48:38,365 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:48:38,368 INFO L272 AbstractInterpreter]: Visited 283 different actions 283 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 08:48:38,406 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:48:38,406 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:48:39,403 INFO L227 lantSequenceWeakener]: Weakened 381 states. On average, predicates are now at 77.56% of their original sizes. [2018-10-27 08:48:39,405 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:48:39,656 INFO L415 sIntCurrentIteration]: We unified 389 AI predicates to 389 [2018-10-27 08:48:39,657 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:48:39,657 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:48:39,658 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2018-10-27 08:48:39,658 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:48:39,659 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:48:39,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:48:39,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:48:39,659 INFO L87 Difference]: Start difference. First operand 18717 states and 26000 transitions. Second operand 6 states. [2018-10-27 08:50:14,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:50:14,672 INFO L93 Difference]: Finished difference Result 38133 states and 52855 transitions. [2018-10-27 08:50:14,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 08:50:14,672 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 390 [2018-10-27 08:50:14,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:50:14,735 INFO L225 Difference]: With dead ends: 38133 [2018-10-27 08:50:14,735 INFO L226 Difference]: Without dead ends: 19422 [2018-10-27 08:50:14,781 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 390 GetRequests, 385 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 08:50:14,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19422 states. [2018-10-27 08:50:15,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19422 to 19420. [2018-10-27 08:50:15,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19420 states. [2018-10-27 08:50:15,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19420 states to 19420 states and 26715 transitions. [2018-10-27 08:50:15,106 INFO L78 Accepts]: Start accepts. Automaton has 19420 states and 26715 transitions. Word has length 390 [2018-10-27 08:50:15,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:50:15,106 INFO L481 AbstractCegarLoop]: Abstraction has 19420 states and 26715 transitions. [2018-10-27 08:50:15,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:50:15,107 INFO L276 IsEmpty]: Start isEmpty. Operand 19420 states and 26715 transitions. [2018-10-27 08:50:15,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 578 [2018-10-27 08:50:15,151 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:50:15,152 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 08:50:15,152 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:50:15,152 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:50:15,153 INFO L82 PathProgramCache]: Analyzing trace with hash 750847463, now seen corresponding path program 1 times [2018-10-27 08:50:15,153 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:50:15,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:50:15,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:50:15,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:50:15,154 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:50:15,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:50:15,729 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 08:50:15,939 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 08:50:16,148 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 08:50:16,578 WARN L179 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-10-27 08:50:17,087 WARN L179 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-10-27 08:50:17,493 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 158 proven. 267 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 08:50:17,493 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:50:17,493 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:50:17,494 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 578 with the following transitions: [2018-10-27 08:50:17,494 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1843], [1845], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2124], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [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], [2584], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2948], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-27 08:50:17,502 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:50:17,503 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:50:17,992 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:50:17,992 INFO L272 AbstractInterpreter]: Visited 287 different actions 567 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 08:50:18,031 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:50:18,031 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:50:18,580 INFO L227 lantSequenceWeakener]: Weakened 574 states. On average, predicates are now at 77.51% of their original sizes. [2018-10-27 08:50:18,580 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:50:18,756 INFO L415 sIntCurrentIteration]: We unified 576 AI predicates to 576 [2018-10-27 08:50:18,757 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:50:18,757 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:50:18,757 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2018-10-27 08:50:18,757 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:50:18,758 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 08:50:18,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 08:50:18,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 08:50:18,759 INFO L87 Difference]: Start difference. First operand 19420 states and 26715 transitions. Second operand 10 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown