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-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label08_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 17:47:10,603 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 17:47:10,606 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 17:47:10,618 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 17:47:10,618 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 17:47:10,619 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 17:47:10,620 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 17:47:10,622 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 17:47:10,624 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 17:47:10,625 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 17:47:10,626 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 17:47:10,626 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 17:47:10,627 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 17:47:10,628 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 17:47:10,630 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 17:47:10,630 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 17:47:10,631 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 17:47:10,633 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 17:47:10,635 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 17:47:10,637 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 17:47:10,638 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 17:47:10,639 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 17:47:10,642 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 17:47:10,642 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 17:47:10,642 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 17:47:10,643 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 17:47:10,644 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 17:47:10,645 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 17:47:10,646 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 17:47:10,647 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 17:47:10,647 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 17:47:10,648 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 17:47:10,648 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 17:47:10,649 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 17:47:10,650 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 17:47:10,650 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 17:47:10,651 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 17:47:10,666 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 17:47:10,667 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 17:47:10,668 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 17:47:10,668 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 17:47:10,668 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 17:47:10,668 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 17:47:10,668 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 17:47:10,669 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 17:47:10,669 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 17:47:10,669 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 17:47:10,669 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 17:47:10,669 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 17:47:10,670 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 17:47:10,670 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 17:47:10,671 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 17:47:10,671 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 17:47:10,671 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 17:47:10,671 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 17:47:10,671 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 17:47:10,672 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 17:47:10,672 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 17:47:10,672 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 17:47:10,672 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 17:47:10,673 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 17:47:10,673 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 17:47:10,673 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 17:47:10,673 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 17:47:10,673 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 17:47:10,674 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 17:47:10,674 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 17:47:10,674 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 17:47:10,674 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 17:47:10,674 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 17:47:10,675 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 17:47:10,675 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 17:47:10,734 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 17:47:10,751 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 17:47:10,755 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 17:47:10,758 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 17:47:10,758 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 17:47:10,759 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label08_false-unreach-call.c [2018-11-07 17:47:10,825 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddc25e6c2/1a8ecbc99ccd440586e4a4c0ef3f8ce5/FLAG2e8284344 [2018-11-07 17:47:11,637 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 17:47:11,638 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label08_false-unreach-call.c [2018-11-07 17:47:11,665 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddc25e6c2/1a8ecbc99ccd440586e4a4c0ef3f8ce5/FLAG2e8284344 [2018-11-07 17:47:11,681 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddc25e6c2/1a8ecbc99ccd440586e4a4c0ef3f8ce5 [2018-11-07 17:47:11,692 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 17:47:11,694 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 17:47:11,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 17:47:11,696 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 17:47:11,700 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 17:47:11,701 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:47:11" (1/1) ... [2018-11-07 17:47:11,704 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@627d1230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:47:11, skipping insertion in model container [2018-11-07 17:47:11,704 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:47:11" (1/1) ... [2018-11-07 17:47:11,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 17:47:11,859 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 17:47:13,115 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 17:47:13,121 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 17:47:13,812 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 17:47:13,846 INFO L193 MainTranslator]: Completed translation [2018-11-07 17:47:13,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:47:13 WrapperNode [2018-11-07 17:47:13,847 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 17:47:13,848 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 17:47:13,848 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 17:47:13,849 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 17:47:13,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:47:13" (1/1) ... [2018-11-07 17:47:14,157 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:47:13" (1/1) ... [2018-11-07 17:47:14,168 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 17:47:14,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 17:47:14,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 17:47:14,169 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 17:47:14,181 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:47:13" (1/1) ... [2018-11-07 17:47:14,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:47:13" (1/1) ... [2018-11-07 17:47:14,204 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:47:13" (1/1) ... [2018-11-07 17:47:14,205 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:47:13" (1/1) ... [2018-11-07 17:47:14,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:47:13" (1/1) ... [2018-11-07 17:47:14,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:47:13" (1/1) ... [2018-11-07 17:47:14,429 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:47:13" (1/1) ... [2018-11-07 17:47:14,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 17:47:14,476 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 17:47:14,476 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 17:47:14,476 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 17:47:14,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:47:13" (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 17:47:14,552 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 17:47:14,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 17:47:14,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 17:47:14,553 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 17:47:14,553 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 17:47:14,553 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 17:47:14,554 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 17:47:14,554 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 17:47:14,554 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 17:47:14,554 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 17:47:14,554 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 17:47:14,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 17:47:14,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 17:47:14,556 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 17:47:14,556 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 17:47:25,242 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 17:47:25,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:47:25 BoogieIcfgContainer [2018-11-07 17:47:25,242 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 17:47:25,243 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 17:47:25,244 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 17:47:25,247 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 17:47:25,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:47:11" (1/3) ... [2018-11-07 17:47:25,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f5e27a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:47:25, skipping insertion in model container [2018-11-07 17:47:25,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:47:13" (2/3) ... [2018-11-07 17:47:25,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f5e27a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:47:25, skipping insertion in model container [2018-11-07 17:47:25,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:47:25" (3/3) ... [2018-11-07 17:47:25,250 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label08_false-unreach-call.c [2018-11-07 17:47:25,260 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 17:47:25,271 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 17:47:25,289 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 17:47:25,342 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 17:47:25,343 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 17:47:25,343 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 17:47:25,343 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 17:47:25,343 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 17:47:25,343 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 17:47:25,344 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 17:47:25,344 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 17:47:25,391 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-11-07 17:47:25,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-07 17:47:25,399 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:47:25,400 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] [2018-11-07 17:47:25,403 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:47:25,409 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:47:25,409 INFO L82 PathProgramCache]: Analyzing trace with hash 2052861436, now seen corresponding path program 1 times [2018-11-07 17:47:25,412 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:47:25,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:47:25,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:47:25,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:47:25,470 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:47:25,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:47:25,850 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 17:47:25,968 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 17:47:25,971 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 17:47:25,971 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 17:47:25,972 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:47:25,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 17:47:25,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 17:47:25,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 17:47:26,001 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-11-07 17:47:34,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:47:34,200 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-11-07 17:47:34,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 17:47:34,201 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2018-11-07 17:47:34,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:47:34,235 INFO L225 Difference]: With dead ends: 2446 [2018-11-07 17:47:34,235 INFO L226 Difference]: Without dead ends: 1604 [2018-11-07 17:47:34,246 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 17:47:34,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-11-07 17:47:34,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-11-07 17:47:34,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-11-07 17:47:34,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2969 transitions. [2018-11-07 17:47:34,397 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2969 transitions. Word has length 36 [2018-11-07 17:47:34,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:47:34,398 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2969 transitions. [2018-11-07 17:47:34,398 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 17:47:34,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2969 transitions. [2018-11-07 17:47:34,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-11-07 17:47:34,405 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:47:34,405 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:47:34,406 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:47:34,406 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:47:34,406 INFO L82 PathProgramCache]: Analyzing trace with hash 817752002, now seen corresponding path program 1 times [2018-11-07 17:47:34,406 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:47:34,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:47:34,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:47:34,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:47:34,408 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:47:34,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:47:34,752 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 17:47:34,753 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 17:47:34,753 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 17:47:34,753 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:47:34,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 17:47:34,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 17:47:34,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 17:47:34,757 INFO L87 Difference]: Start difference. First operand 1604 states and 2969 transitions. Second operand 5 states. [2018-11-07 17:47:45,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:47:45,327 INFO L93 Difference]: Finished difference Result 4038 states and 7427 transitions. [2018-11-07 17:47:45,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 17:47:45,330 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2018-11-07 17:47:45,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:47:45,346 INFO L225 Difference]: With dead ends: 4038 [2018-11-07 17:47:45,346 INFO L226 Difference]: Without dead ends: 2440 [2018-11-07 17:47:45,351 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 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 17:47:45,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2440 states. [2018-11-07 17:47:45,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2440 to 2413. [2018-11-07 17:47:45,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2413 states. [2018-11-07 17:47:45,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2413 states to 2413 states and 4141 transitions. [2018-11-07 17:47:45,420 INFO L78 Accepts]: Start accepts. Automaton has 2413 states and 4141 transitions. Word has length 110 [2018-11-07 17:47:45,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:47:45,421 INFO L480 AbstractCegarLoop]: Abstraction has 2413 states and 4141 transitions. [2018-11-07 17:47:45,421 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 17:47:45,421 INFO L276 IsEmpty]: Start isEmpty. Operand 2413 states and 4141 transitions. [2018-11-07 17:47:45,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-11-07 17:47:45,424 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:47:45,424 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:47:45,425 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:47:45,425 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:47:45,425 INFO L82 PathProgramCache]: Analyzing trace with hash -354889122, now seen corresponding path program 1 times [2018-11-07 17:47:45,425 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:47:45,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:47:45,426 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:47:45,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:47:45,427 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:47:45,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:47:45,667 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-07 17:47:45,668 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:47:45,668 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 17:47:45,669 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 113 with the following transitions: [2018-11-07 17:47:45,671 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2055], [2057], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2384], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 17:47:45,728 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 17:47:45,729 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 17:47:46,586 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 17:47:46,589 INFO L272 AbstractInterpreter]: Visited 83 different actions 159 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 17:47:46,638 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:47:46,638 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 17:47:47,075 INFO L227 lantSequenceWeakener]: Weakened 109 states. On average, predicates are now at 75.54% of their original sizes. [2018-11-07 17:47:47,076 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 17:47:47,897 INFO L415 sIntCurrentIteration]: We unified 111 AI predicates to 111 [2018-11-07 17:47:47,897 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 17:47:47,900 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 17:47:47,900 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 14 [2018-11-07 17:47:47,900 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:47:47,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 17:47:47,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 17:47:47,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-07 17:47:47,902 INFO L87 Difference]: Start difference. First operand 2413 states and 4141 transitions. Second operand 11 states. [2018-11-07 17:47:57,492 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 17:48:44,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:48:44,872 INFO L93 Difference]: Finished difference Result 7130 states and 12346 transitions. [2018-11-07 17:48:44,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-07 17:48:44,872 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 112 [2018-11-07 17:48:44,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:48:44,898 INFO L225 Difference]: With dead ends: 7130 [2018-11-07 17:48:44,898 INFO L226 Difference]: Without dead ends: 4723 [2018-11-07 17:48:44,906 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 120 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2018-11-07 17:48:44,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4723 states. [2018-11-07 17:48:45,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4723 to 4720. [2018-11-07 17:48:45,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4720 states. [2018-11-07 17:48:45,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4720 states to 4720 states and 6479 transitions. [2018-11-07 17:48:45,025 INFO L78 Accepts]: Start accepts. Automaton has 4720 states and 6479 transitions. Word has length 112 [2018-11-07 17:48:45,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:48:45,026 INFO L480 AbstractCegarLoop]: Abstraction has 4720 states and 6479 transitions. [2018-11-07 17:48:45,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-07 17:48:45,026 INFO L276 IsEmpty]: Start isEmpty. Operand 4720 states and 6479 transitions. [2018-11-07 17:48:45,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-11-07 17:48:45,038 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:48:45,038 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 17:48:45,039 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:48:45,039 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:48:45,039 INFO L82 PathProgramCache]: Analyzing trace with hash -252974828, now seen corresponding path program 1 times [2018-11-07 17:48:45,039 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:48:45,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:48:45,040 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:48:45,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:48:45,042 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:48:45,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:48:45,440 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-11-07 17:48:45,441 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 17:48:45,441 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 17:48:45,441 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:48:45,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 17:48:45,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 17:48:45,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 17:48:45,443 INFO L87 Difference]: Start difference. First operand 4720 states and 6479 transitions. Second operand 4 states. [2018-11-07 17:48:53,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:48:53,428 INFO L93 Difference]: Finished difference Result 11805 states and 19115 transitions. [2018-11-07 17:48:53,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 17:48:53,429 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 258 [2018-11-07 17:48:53,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:48:53,473 INFO L225 Difference]: With dead ends: 11805 [2018-11-07 17:48:53,473 INFO L226 Difference]: Without dead ends: 9398 [2018-11-07 17:48:53,489 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 17:48:53,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9398 states. [2018-11-07 17:48:53,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9398 to 9398. [2018-11-07 17:48:53,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9398 states. [2018-11-07 17:48:53,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9398 states to 9398 states and 13400 transitions. [2018-11-07 17:48:53,716 INFO L78 Accepts]: Start accepts. Automaton has 9398 states and 13400 transitions. Word has length 258 [2018-11-07 17:48:53,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:48:53,717 INFO L480 AbstractCegarLoop]: Abstraction has 9398 states and 13400 transitions. [2018-11-07 17:48:53,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 17:48:53,717 INFO L276 IsEmpty]: Start isEmpty. Operand 9398 states and 13400 transitions. [2018-11-07 17:48:53,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-11-07 17:48:53,725 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:48:53,725 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 17:48:53,726 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:48:53,726 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:48:53,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1459343232, now seen corresponding path program 1 times [2018-11-07 17:48:53,726 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:48:53,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:48:53,727 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:48:53,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:48:53,728 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:48:53,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:48:54,125 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 17:48:54,560 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 59 proven. 15 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-11-07 17:48:54,560 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:48:54,560 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 17:48:54,560 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 285 with the following transitions: [2018-11-07 17:48:54,561 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2055], [2057], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2472], [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], [2680], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 17:48:54,570 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 17:48:54,570 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 17:48:54,737 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 17:48:55,092 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 17:48:55,093 INFO L272 AbstractInterpreter]: Visited 158 different actions 310 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 17:48:55,130 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:48:55,131 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 17:48:56,448 INFO L227 lantSequenceWeakener]: Weakened 40 states. On average, predicates are now at 80.05% of their original sizes. [2018-11-07 17:48:56,448 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 17:48:57,228 INFO L415 sIntCurrentIteration]: We unified 283 AI predicates to 283 [2018-11-07 17:48:57,229 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 17:48:57,229 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 17:48:57,230 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [25] imperfect sequences [6] total 29 [2018-11-07 17:48:57,230 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:48:57,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-11-07 17:48:57,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-11-07 17:48:57,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2018-11-07 17:48:57,232 INFO L87 Difference]: Start difference. First operand 9398 states and 13400 transitions. Second operand 25 states.