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_label14_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 11:41:25,649 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 11:41:25,651 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 11:41:25,665 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 11:41:25,665 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 11:41:25,666 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 11:41:25,670 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 11:41:25,673 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 11:41:25,675 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 11:41:25,675 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 11:41:25,677 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 11:41:25,678 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 11:41:25,679 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 11:41:25,680 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 11:41:25,683 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 11:41:25,684 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 11:41:25,685 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 11:41:25,692 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 11:41:25,698 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 11:41:25,701 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 11:41:25,703 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 11:41:25,705 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 11:41:25,710 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 11:41:25,723 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 11:41:25,753 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 11:41:25,753 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 11:41:25,754 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 11:41:25,754 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 11:41:25,755 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 11:41:25,755 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 11:41:25,755 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 11:41:25,755 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 11:41:25,755 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 11:41:25,760 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 11:41:25,760 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 11:41:25,760 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 11:41:25,761 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 11:41:25,761 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 11:41:25,762 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 11:41:25,762 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 11:41:25,762 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 11:41:25,762 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 11:41:25,762 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 11:41:25,763 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 11:41:25,763 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 11:41:25,763 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 11:41:25,763 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 11:41:25,763 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 11:41:25,763 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 11:41:25,765 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 11:41:25,766 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 11:41:25,766 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 11:41:25,766 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 11:41:25,766 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 11:41:25,766 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 11:41:25,766 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 11:41:25,767 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 11:41:25,767 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 11:41:25,824 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 11:41:25,839 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 11:41:25,843 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 11:41:25,844 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 11:41:25,845 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 11:41:25,846 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label14_false-unreach-call.c [2018-11-07 11:41:25,916 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea6f2d1f3/98236cc17c3f422b873183065bbd8105/FLAG795347c7d [2018-11-07 11:41:26,587 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 11:41:26,588 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label14_false-unreach-call.c [2018-11-07 11:41:26,604 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea6f2d1f3/98236cc17c3f422b873183065bbd8105/FLAG795347c7d [2018-11-07 11:41:26,621 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea6f2d1f3/98236cc17c3f422b873183065bbd8105 [2018-11-07 11:41:26,632 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 11:41:26,634 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 11:41:26,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 11:41:26,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 11:41:26,639 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 11:41:26,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:41:26" (1/1) ... [2018-11-07 11:41:26,643 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ede86bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:41:26, skipping insertion in model container [2018-11-07 11:41:26,643 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:41:26" (1/1) ... [2018-11-07 11:41:26,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 11:41:26,741 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 11:41:27,467 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 11:41:27,474 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 11:41:27,695 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 11:41:27,715 INFO L193 MainTranslator]: Completed translation [2018-11-07 11:41:27,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:41:27 WrapperNode [2018-11-07 11:41:27,716 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 11:41:27,717 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 11:41:27,717 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 11:41:27,717 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 11:41:27,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:41:27" (1/1) ... [2018-11-07 11:41:27,891 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:41:27" (1/1) ... [2018-11-07 11:41:27,910 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 11:41:27,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 11:41:27,911 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 11:41:27,911 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 11:41:27,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:41:27" (1/1) ... [2018-11-07 11:41:27,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:41:27" (1/1) ... [2018-11-07 11:41:27,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:41:27" (1/1) ... [2018-11-07 11:41:27,938 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:41:27" (1/1) ... [2018-11-07 11:41:28,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:41:27" (1/1) ... [2018-11-07 11:41:28,026 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:41:27" (1/1) ... [2018-11-07 11:41:28,052 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:41:27" (1/1) ... [2018-11-07 11:41:28,074 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 11:41:28,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 11:41:28,075 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 11:41:28,075 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 11:41:28,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:41:27" (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 11:41:28,157 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 11:41:28,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 11:41:28,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 11:41:28,158 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 11:41:28,158 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 11:41:28,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 11:41:28,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 11:41:28,159 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 11:41:28,159 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 11:41:33,282 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 11:41:33,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:41:33 BoogieIcfgContainer [2018-11-07 11:41:33,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 11:41:33,285 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 11:41:33,285 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 11:41:33,288 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 11:41:33,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:41:26" (1/3) ... [2018-11-07 11:41:33,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b7b0cd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:41:33, skipping insertion in model container [2018-11-07 11:41:33,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:41:27" (2/3) ... [2018-11-07 11:41:33,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b7b0cd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:41:33, skipping insertion in model container [2018-11-07 11:41:33,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:41:33" (3/3) ... [2018-11-07 11:41:33,294 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label14_false-unreach-call.c [2018-11-07 11:41:33,305 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 11:41:33,316 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 11:41:33,333 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 11:41:33,384 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 11:41:33,384 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 11:41:33,384 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 11:41:33,384 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 11:41:33,385 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 11:41:33,385 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 11:41:33,385 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 11:41:33,385 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 11:41:33,421 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-07 11:41:33,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-07 11:41:33,432 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:41:33,433 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] [2018-11-07 11:41:33,435 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:41:33,442 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:41:33,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1160444273, now seen corresponding path program 1 times [2018-11-07 11:41:33,445 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:41:33,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:41:33,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:41:33,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:41:33,493 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:41:33,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:41:33,913 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 11:41:33,916 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 11:41:33,916 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 11:41:33,917 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:41:33,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 11:41:33,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 11:41:33,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 11:41:33,945 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-11-07 11:41:37,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 11:41:37,586 INFO L93 Difference]: Finished difference Result 998 states and 1780 transitions. [2018-11-07 11:41:37,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 11:41:37,588 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-11-07 11:41:37,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 11:41:37,613 INFO L225 Difference]: With dead ends: 998 [2018-11-07 11:41:37,613 INFO L226 Difference]: Without dead ends: 699 [2018-11-07 11:41:37,624 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 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 11:41:37,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2018-11-07 11:41:37,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 693. [2018-11-07 11:41:37,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2018-11-07 11:41:37,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1109 transitions. [2018-11-07 11:41:37,740 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1109 transitions. Word has length 23 [2018-11-07 11:41:37,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 11:41:37,741 INFO L480 AbstractCegarLoop]: Abstraction has 693 states and 1109 transitions. [2018-11-07 11:41:37,741 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 11:41:37,742 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1109 transitions. [2018-11-07 11:41:37,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-11-07 11:41:37,748 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:41:37,748 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 11:41:37,749 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:41:37,749 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:41:37,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1757464148, now seen corresponding path program 1 times [2018-11-07 11:41:37,750 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:41:37,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:41:37,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:41:37,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:41:37,752 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:41:37,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:41:38,488 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 11:41:38,489 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 11:41:38,489 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-07 11:41:38,489 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:41:38,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 11:41:38,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 11:41:38,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 11:41:38,492 INFO L87 Difference]: Start difference. First operand 693 states and 1109 transitions. Second operand 7 states. [2018-11-07 11:41:44,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 11:41:44,724 INFO L93 Difference]: Finished difference Result 2549 states and 4241 transitions. [2018-11-07 11:41:44,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 11:41:44,729 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2018-11-07 11:41:44,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 11:41:44,745 INFO L225 Difference]: With dead ends: 2549 [2018-11-07 11:41:44,746 INFO L226 Difference]: Without dead ends: 1862 [2018-11-07 11:41:44,755 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-11-07 11:41:44,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1862 states. [2018-11-07 11:41:44,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1862 to 1435. [2018-11-07 11:41:44,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1435 states. [2018-11-07 11:41:44,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1435 states to 1435 states and 2153 transitions. [2018-11-07 11:41:44,856 INFO L78 Accepts]: Start accepts. Automaton has 1435 states and 2153 transitions. Word has length 97 [2018-11-07 11:41:44,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 11:41:44,857 INFO L480 AbstractCegarLoop]: Abstraction has 1435 states and 2153 transitions. [2018-11-07 11:41:44,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 11:41:44,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1435 states and 2153 transitions. [2018-11-07 11:41:44,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-11-07 11:41:44,866 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 11:41:44,866 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 11:41:44,866 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 11:41:44,867 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:41:44,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1282100994, now seen corresponding path program 1 times [2018-11-07 11:41:44,867 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 11:41:44,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:41:44,868 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 11:41:44,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 11:41:44,869 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 11:41:44,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 11:41:45,133 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 32 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 11:41:45,134 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 11:41:45,134 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 11:41:45,135 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 171 with the following transitions: [2018-11-07 11:41:45,137 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [85], [87], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [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], [510], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 11:41:45,191 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 11:41:45,191 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 11:41:45,869 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 11:41:46,360 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 11:41:46,364 INFO L272 AbstractInterpreter]: Visited 79 different actions 79 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-11-07 11:41:46,418 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 11:41:46,419 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 11:41:47,868 INFO L227 lantSequenceWeakener]: Weakened 161 states. On average, predicates are now at 73.01% of their original sizes. [2018-11-07 11:41:47,869 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 11:41:48,236 INFO L415 sIntCurrentIteration]: We unified 169 AI predicates to 169 [2018-11-07 11:41:48,236 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 11:41:48,239 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 11:41:48,239 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 11:41:48,240 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 11:41:48,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 11:41:48,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 11:41:48,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 11:41:48,241 INFO L87 Difference]: Start difference. First operand 1435 states and 2153 transitions. Second operand 7 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown