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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label16_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 14:26:52,643 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 14:26:52,646 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 14:26:52,659 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 14:26:52,660 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 14:26:52,662 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 14:26:52,663 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 14:26:52,666 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 14:26:52,668 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 14:26:52,668 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 14:26:52,672 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 14:26:52,672 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 14:26:52,673 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 14:26:52,681 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 14:26:52,682 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 14:26:52,683 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 14:26:52,687 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 14:26:52,690 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 14:26:52,693 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 14:26:52,694 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 14:26:52,697 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 14:26:52,698 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 14:26:52,700 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 14:26:52,703 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 14:26:52,703 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 14:26:52,705 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 14:26:52,708 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 14:26:52,709 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 14:26:52,710 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 14:26:52,711 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 14:26:52,713 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 14:26:52,713 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 14:26:52,714 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 14:26:52,714 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 14:26:52,715 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 14:26:52,715 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 14:26:52,717 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.epf [2018-11-07 14:26:52,746 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 14:26:52,746 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 14:26:52,747 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 14:26:52,747 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 14:26:52,747 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 14:26:52,748 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 14:26:52,748 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 14:26:52,748 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 14:26:52,748 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 14:26:52,749 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 14:26:52,749 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 14:26:52,749 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 14:26:52,750 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 14:26:52,751 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 14:26:52,751 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 14:26:52,751 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 14:26:52,751 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 14:26:52,752 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 14:26:52,752 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 14:26:52,752 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 14:26:52,752 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 14:26:52,752 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 14:26:52,753 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 14:26:52,754 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 14:26:52,754 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 14:26:52,754 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 14:26:52,754 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 14:26:52,755 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 14:26:52,755 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 14:26:52,755 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 14:26:52,755 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 14:26:52,755 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 14:26:52,756 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 14:26:52,756 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 14:26:52,827 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 14:26:52,842 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 14:26:52,846 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 14:26:52,848 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 14:26:52,848 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 14:26:52,849 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label16_true-unreach-call.c [2018-11-07 14:26:52,908 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2113227a/7098be9f252c441d919f6b5d5db967fa/FLAG91cea29f2 [2018-11-07 14:26:53,556 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 14:26:53,556 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label16_true-unreach-call.c [2018-11-07 14:26:53,580 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2113227a/7098be9f252c441d919f6b5d5db967fa/FLAG91cea29f2 [2018-11-07 14:26:53,598 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2113227a/7098be9f252c441d919f6b5d5db967fa [2018-11-07 14:26:53,611 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 14:26:53,613 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 14:26:53,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 14:26:53,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 14:26:53,620 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 14:26:53,621 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:26:53" (1/1) ... [2018-11-07 14:26:53,624 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@289a9b61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:26:53, skipping insertion in model container [2018-11-07 14:26:53,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:26:53" (1/1) ... [2018-11-07 14:26:53,635 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 14:26:53,724 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 14:26:54,340 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:26:54,344 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 14:26:54,553 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:26:54,573 INFO L193 MainTranslator]: Completed translation [2018-11-07 14:26:54,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:26:54 WrapperNode [2018-11-07 14:26:54,573 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 14:26:54,574 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 14:26:54,574 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 14:26:54,575 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 14:26:54,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:26:54" (1/1) ... [2018-11-07 14:26:54,738 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:26:54" (1/1) ... [2018-11-07 14:26:54,753 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 14:26:54,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 14:26:54,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 14:26:54,754 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 14:26:54,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:26:54" (1/1) ... [2018-11-07 14:26:54,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:26:54" (1/1) ... [2018-11-07 14:26:54,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:26:54" (1/1) ... [2018-11-07 14:26:54,770 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:26:54" (1/1) ... [2018-11-07 14:26:54,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:26:54" (1/1) ... [2018-11-07 14:26:54,839 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:26:54" (1/1) ... [2018-11-07 14:26:54,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:26:54" (1/1) ... [2018-11-07 14:26:54,867 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 14:26:54,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 14:26:54,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 14:26:54,868 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 14:26:54,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:26:54" (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 14:26:54,951 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 14:26:54,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 14:26:54,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 14:26:54,953 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 14:26:54,953 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 14:26:54,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 14:26:54,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 14:26:54,954 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 14:26:54,954 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 14:27:00,206 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 14:27:00,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:27:00 BoogieIcfgContainer [2018-11-07 14:27:00,207 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 14:27:00,208 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 14:27:00,208 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 14:27:00,212 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 14:27:00,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:26:53" (1/3) ... [2018-11-07 14:27:00,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6323ca8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:27:00, skipping insertion in model container [2018-11-07 14:27:00,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:26:54" (2/3) ... [2018-11-07 14:27:00,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6323ca8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:27:00, skipping insertion in model container [2018-11-07 14:27:00,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:27:00" (3/3) ... [2018-11-07 14:27:00,216 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label16_true-unreach-call.c [2018-11-07 14:27:00,226 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 14:27:00,236 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 14:27:00,256 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 14:27:00,297 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 14:27:00,298 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 14:27:00,298 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 14:27:00,298 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 14:27:00,298 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 14:27:00,298 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 14:27:00,298 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 14:27:00,299 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 14:27:00,330 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-07 14:27:00,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-11-07 14:27:00,339 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:27:00,341 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:27:00,343 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:27:00,349 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:27:00,350 INFO L82 PathProgramCache]: Analyzing trace with hash -328635820, now seen corresponding path program 1 times [2018-11-07 14:27:00,353 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:27:00,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:27:00,407 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:27:00,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:27:00,407 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:27:00,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:27:00,951 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 14:27:00,954 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:27:00,954 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 14:27:00,954 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:27:00,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 14:27:00,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 14:27:00,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:27:00,985 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-11-07 14:27:04,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:27:04,348 INFO L93 Difference]: Finished difference Result 985 states and 1761 transitions. [2018-11-07 14:27:04,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 14:27:04,351 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2018-11-07 14:27:04,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:27:04,374 INFO L225 Difference]: With dead ends: 985 [2018-11-07 14:27:04,375 INFO L226 Difference]: Without dead ends: 686 [2018-11-07 14:27:04,384 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:27:04,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2018-11-07 14:27:04,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 686. [2018-11-07 14:27:04,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2018-11-07 14:27:04,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1046 transitions. [2018-11-07 14:27:04,490 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1046 transitions. Word has length 50 [2018-11-07 14:27:04,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:27:04,491 INFO L480 AbstractCegarLoop]: Abstraction has 686 states and 1046 transitions. [2018-11-07 14:27:04,491 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 14:27:04,491 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1046 transitions. [2018-11-07 14:27:04,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-11-07 14:27:04,500 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:27:04,500 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:27:04,501 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:27:04,501 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:27:04,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1947059533, now seen corresponding path program 1 times [2018-11-07 14:27:04,501 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:27:04,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:27:04,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:27:04,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:27:04,503 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:27:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:27:04,922 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:27:04,922 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:27:04,923 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:27:04,923 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:27:04,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:27:04,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:27:04,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:27:04,926 INFO L87 Difference]: Start difference. First operand 686 states and 1046 transitions. Second operand 6 states. [2018-11-07 14:27:10,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:27:10,237 INFO L93 Difference]: Finished difference Result 2339 states and 3734 transitions. [2018-11-07 14:27:10,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:27:10,241 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-11-07 14:27:10,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:27:10,255 INFO L225 Difference]: With dead ends: 2339 [2018-11-07 14:27:10,256 INFO L226 Difference]: Without dead ends: 1659 [2018-11-07 14:27:10,261 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-07 14:27:10,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2018-11-07 14:27:10,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1642. [2018-11-07 14:27:10,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1642 states. [2018-11-07 14:27:10,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 2354 transitions. [2018-11-07 14:27:10,364 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 2354 transitions. Word has length 131 [2018-11-07 14:27:10,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:27:10,365 INFO L480 AbstractCegarLoop]: Abstraction has 1642 states and 2354 transitions. [2018-11-07 14:27:10,365 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:27:10,366 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 2354 transitions. [2018-11-07 14:27:10,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-11-07 14:27:10,373 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:27:10,373 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:27:10,374 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:27:10,374 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:27:10,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1463851825, now seen corresponding path program 1 times [2018-11-07 14:27:10,374 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:27:10,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:27:10,376 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:27:10,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:27:10,376 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:27:10,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:27:10,618 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:27:10,619 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:27:10,619 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 14:27:10,619 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:27:10,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 14:27:10,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 14:27:10,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:27:10,621 INFO L87 Difference]: Start difference. First operand 1642 states and 2354 transitions. Second operand 4 states. [2018-11-07 14:27:12,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:27:12,946 INFO L93 Difference]: Finished difference Result 6013 states and 9018 transitions. [2018-11-07 14:27:12,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 14:27:12,947 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 182 [2018-11-07 14:27:12,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:27:12,987 INFO L225 Difference]: With dead ends: 6013 [2018-11-07 14:27:12,988 INFO L226 Difference]: Without dead ends: 4377 [2018-11-07 14:27:13,005 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:27:13,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4377 states. [2018-11-07 14:27:13,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4377 to 4354. [2018-11-07 14:27:13,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4354 states. [2018-11-07 14:27:13,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4354 states to 4354 states and 6078 transitions. [2018-11-07 14:27:13,149 INFO L78 Accepts]: Start accepts. Automaton has 4354 states and 6078 transitions. Word has length 182 [2018-11-07 14:27:13,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:27:13,150 INFO L480 AbstractCegarLoop]: Abstraction has 4354 states and 6078 transitions. [2018-11-07 14:27:13,150 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 14:27:13,150 INFO L276 IsEmpty]: Start isEmpty. Operand 4354 states and 6078 transitions. [2018-11-07 14:27:13,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-11-07 14:27:13,164 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:27:13,165 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:27:13,165 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:27:13,165 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:27:13,165 INFO L82 PathProgramCache]: Analyzing trace with hash -572064998, now seen corresponding path program 1 times [2018-11-07 14:27:13,166 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:27:13,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:27:13,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:27:13,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:27:13,167 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:27:13,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:27:13,521 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 86 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 14:27:13,522 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:27:13,522 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 14:27:13,523 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 227 with the following transitions: [2018-11-07 14:27:13,526 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [301], [303], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [618], [623], [625], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 14:27:13,575 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 14:27:13,576 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 14:27:14,199 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 14:27:14,202 INFO L272 AbstractInterpreter]: Visited 106 different actions 106 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-11-07 14:27:14,265 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:27:14,265 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 14:27:15,014 INFO L227 lantSequenceWeakener]: Weakened 215 states. On average, predicates are now at 73.51% of their original sizes. [2018-11-07 14:27:15,014 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 14:27:15,392 INFO L415 sIntCurrentIteration]: We unified 225 AI predicates to 225 [2018-11-07 14:27:15,393 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 14:27:15,394 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 14:27:15,394 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 14:27:15,394 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:27:15,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 14:27:15,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 14:27:15,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 14:27:15,396 INFO L87 Difference]: Start difference. First operand 4354 states and 6078 transitions. Second operand 7 states. [2018-11-07 14:27:17,631 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 14:30:01,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:30:01,111 INFO L93 Difference]: Finished difference Result 8894 states and 12374 transitions. [2018-11-07 14:30:01,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:30:01,111 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 226 [2018-11-07 14:30:01,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:30:01,136 INFO L225 Difference]: With dead ends: 8894 [2018-11-07 14:30:01,136 INFO L226 Difference]: Without dead ends: 4546 [2018-11-07 14:30:01,155 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 226 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 14:30:01,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4546 states. [2018-11-07 14:30:01,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4546 to 4544. [2018-11-07 14:30:01,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4544 states. [2018-11-07 14:30:01,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4544 states to 4544 states and 6278 transitions. [2018-11-07 14:30:01,275 INFO L78 Accepts]: Start accepts. Automaton has 4544 states and 6278 transitions. Word has length 226 [2018-11-07 14:30:01,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:30:01,276 INFO L480 AbstractCegarLoop]: Abstraction has 4544 states and 6278 transitions. [2018-11-07 14:30:01,276 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 14:30:01,276 INFO L276 IsEmpty]: Start isEmpty. Operand 4544 states and 6278 transitions. [2018-11-07 14:30:01,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-11-07 14:30:01,291 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:30:01,292 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 14:30:01,292 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:30:01,293 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:30:01,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1720249895, now seen corresponding path program 1 times [2018-11-07 14:30:01,293 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:30:01,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:30:01,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:30:01,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:30:01,294 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:30:01,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:30:01,659 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-11-07 14:30:01,660 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:30:01,660 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 14:30:01,660 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:30:01,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 14:30:01,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 14:30:01,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 14:30:01,664 INFO L87 Difference]: Start difference. First operand 4544 states and 6278 transitions. Second operand 3 states. [2018-11-07 14:30:05,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:30:05,183 INFO L93 Difference]: Finished difference Result 10605 states and 15140 transitions. [2018-11-07 14:30:05,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 14:30:05,186 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 320 [2018-11-07 14:30:05,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:30:05,223 INFO L225 Difference]: With dead ends: 10605 [2018-11-07 14:30:05,223 INFO L226 Difference]: Without dead ends: 6257 [2018-11-07 14:30:05,251 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 14:30:05,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6257 states. [2018-11-07 14:30:05,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6257 to 6257. [2018-11-07 14:30:05,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6257 states. [2018-11-07 14:30:05,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6257 states to 6257 states and 8403 transitions. [2018-11-07 14:30:05,408 INFO L78 Accepts]: Start accepts. Automaton has 6257 states and 8403 transitions. Word has length 320 [2018-11-07 14:30:05,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:30:05,409 INFO L480 AbstractCegarLoop]: Abstraction has 6257 states and 8403 transitions. [2018-11-07 14:30:05,409 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 14:30:05,410 INFO L276 IsEmpty]: Start isEmpty. Operand 6257 states and 8403 transitions. [2018-11-07 14:30:05,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2018-11-07 14:30:05,430 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:30:05,430 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 14:30:05,431 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:30:05,431 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:30:05,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1616066757, now seen corresponding path program 1 times [2018-11-07 14:30:05,432 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:30:05,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:30:05,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:30:05,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:30:05,433 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:30:05,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:30:06,176 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 312 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-11-07 14:30:06,177 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:30:06,177 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 14:30:06,177 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 354 with the following transitions: [2018-11-07 14:30:06,179 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [301], [303], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [578], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 14:30:06,188 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 14:30:06,188 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 14:30:06,282 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 14:30:07,119 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 14:30:07,119 INFO L272 AbstractInterpreter]: Visited 126 different actions 365 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-07 14:30:07,131 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:30:07,131 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 14:30:07,790 INFO L227 lantSequenceWeakener]: Weakened 350 states. On average, predicates are now at 73.4% of their original sizes. [2018-11-07 14:30:07,791 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 14:30:08,138 INFO L415 sIntCurrentIteration]: We unified 352 AI predicates to 352 [2018-11-07 14:30:08,138 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 14:30:08,139 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 14:30:08,139 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-07 14:30:08,139 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:30:08,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 14:30:08,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 14:30:08,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-07 14:30:08,141 INFO L87 Difference]: Start difference. First operand 6257 states and 8403 transitions. Second operand 11 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown