java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label47_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:09:14,893 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:09:14,895 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:09:14,912 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:09:14,913 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:09:14,914 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:09:14,916 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:09:14,918 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:09:14,922 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:09:14,923 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:09:14,929 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:09:14,929 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:09:14,930 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:09:14,936 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:09:14,937 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:09:14,938 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:09:14,939 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:09:14,940 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:09:14,942 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:09:14,944 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:09:14,945 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:09:14,946 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:09:14,948 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 18:09:14,956 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 18:09:14,978 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:09:14,980 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:09:14,981 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:09:14,981 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:09:14,982 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:09:14,982 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:09:14,982 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:09:14,982 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:09:14,982 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:09:14,983 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:09:14,983 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:09:14,983 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:09:14,984 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:09:14,986 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:09:14,986 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:09:14,986 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:09:14,987 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:09:14,987 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:09:14,987 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:09:14,987 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:09:14,987 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:09:14,988 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:09:14,988 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:09:14,988 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:09:14,988 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:09:14,988 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:09:14,988 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:09:14,989 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:09:14,989 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:09:14,989 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:09:14,989 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:09:14,989 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:09:14,990 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:09:14,990 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:09:15,045 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:09:15,060 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:09:15,064 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:09:15,066 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:09:15,066 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:09:15,067 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label47_false-unreach-call.c [2018-10-24 18:09:15,126 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/976266aee/b0261d475ad840179f4cea8e77742930/FLAG5f57ee603 [2018-10-24 18:09:15,748 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:09:15,752 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label47_false-unreach-call.c [2018-10-24 18:09:15,774 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/976266aee/b0261d475ad840179f4cea8e77742930/FLAG5f57ee603 [2018-10-24 18:09:15,792 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/976266aee/b0261d475ad840179f4cea8e77742930 [2018-10-24 18:09:15,803 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:09:15,804 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:09:15,805 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:09:15,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:09:15,809 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:09:15,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:09:15" (1/1) ... [2018-10-24 18:09:15,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11290b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:15, skipping insertion in model container [2018-10-24 18:09:15,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:09:15" (1/1) ... [2018-10-24 18:09:15,824 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:09:15,890 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:09:16,296 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:09:16,300 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:09:16,441 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:09:16,461 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:09:16,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:16 WrapperNode [2018-10-24 18:09:16,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:09:16,463 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:09:16,463 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:09:16,463 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:09:16,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:16" (1/1) ... [2018-10-24 18:09:16,498 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:16" (1/1) ... [2018-10-24 18:09:16,668 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:09:16,668 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:09:16,669 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:09:16,669 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:09:16,679 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:16" (1/1) ... [2018-10-24 18:09:16,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:16" (1/1) ... [2018-10-24 18:09:16,686 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:16" (1/1) ... [2018-10-24 18:09:16,686 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:16" (1/1) ... [2018-10-24 18:09:16,714 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:16" (1/1) ... [2018-10-24 18:09:16,731 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:16" (1/1) ... [2018-10-24 18:09:16,751 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:16" (1/1) ... [2018-10-24 18:09:16,769 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:09:16,769 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:09:16,769 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:09:16,770 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:09:16,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:09:16,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:09:16,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:09:16,843 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:09:16,843 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:09:16,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:09:16,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:09:16,844 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:09:16,844 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:09:20,175 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:09:20,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:09:20 BoogieIcfgContainer [2018-10-24 18:09:20,176 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:09:20,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:09:20,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:09:20,181 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:09:20,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:09:15" (1/3) ... [2018-10-24 18:09:20,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@424a1850 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:09:20, skipping insertion in model container [2018-10-24 18:09:20,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:16" (2/3) ... [2018-10-24 18:09:20,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@424a1850 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:09:20, skipping insertion in model container [2018-10-24 18:09:20,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:09:20" (3/3) ... [2018-10-24 18:09:20,185 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label47_false-unreach-call.c [2018-10-24 18:09:20,197 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:09:20,207 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:09:20,226 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:09:20,265 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:09:20,266 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:09:20,266 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:09:20,266 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:09:20,266 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:09:20,267 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:09:20,267 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:09:20,267 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:09:20,294 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-24 18:09:20,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-24 18:09:20,301 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:09:20,302 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] [2018-10-24 18:09:20,305 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:09:20,311 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:09:20,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1783981196, now seen corresponding path program 1 times [2018-10-24 18:09:20,313 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:09:20,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:20,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:09:20,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:20,364 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:09:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:09:20,789 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:09:20,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:09:20,843 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:09:20,844 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:09:20,844 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:09:20,850 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:09:20,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:09:20,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:09:20,869 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-10-24 18:09:23,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:09:23,149 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-10-24 18:09:23,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:09:23,153 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2018-10-24 18:09:23,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:09:23,172 INFO L225 Difference]: With dead ends: 574 [2018-10-24 18:09:23,172 INFO L226 Difference]: Without dead ends: 356 [2018-10-24 18:09:23,180 INFO L605 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 [2018-10-24 18:09:23,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-10-24 18:09:23,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-10-24 18:09:23,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-10-24 18:09:23,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 609 transitions. [2018-10-24 18:09:23,257 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 609 transitions. Word has length 26 [2018-10-24 18:09:23,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:09:23,257 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 609 transitions. [2018-10-24 18:09:23,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:09:23,258 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 609 transitions. [2018-10-24 18:09:23,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-24 18:09:23,263 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:09:23,264 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:09:23,264 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:09:23,265 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:09:23,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1113022292, now seen corresponding path program 1 times [2018-10-24 18:09:23,265 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:09:23,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:23,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:09:23,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:23,267 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:09:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:09:23,602 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:09:23,602 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:09:23,603 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:09:23,603 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:09:23,605 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:09:23,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:09:23,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:09:23,606 INFO L87 Difference]: Start difference. First operand 356 states and 609 transitions. Second operand 6 states. [2018-10-24 18:09:25,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:09:25,256 INFO L93 Difference]: Finished difference Result 867 states and 1507 transitions. [2018-10-24 18:09:25,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:09:25,258 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2018-10-24 18:09:25,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:09:25,264 INFO L225 Difference]: With dead ends: 867 [2018-10-24 18:09:25,264 INFO L226 Difference]: Without dead ends: 517 [2018-10-24 18:09:25,267 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:09:25,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2018-10-24 18:09:25,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 508. [2018-10-24 18:09:25,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 508 states. [2018-10-24 18:09:25,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 831 transitions. [2018-10-24 18:09:25,310 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 831 transitions. Word has length 100 [2018-10-24 18:09:25,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:09:25,310 INFO L481 AbstractCegarLoop]: Abstraction has 508 states and 831 transitions. [2018-10-24 18:09:25,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:09:25,311 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 831 transitions. [2018-10-24 18:09:25,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-24 18:09:25,315 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:09:25,316 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:09:25,316 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:09:25,316 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:09:25,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1943190632, now seen corresponding path program 1 times [2018-10-24 18:09:25,317 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:09:25,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:25,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:09:25,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:25,319 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:09:25,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:09:25,538 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:09:25,539 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:09:25,539 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 18:09:25,539 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:09:25,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 18:09:25,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 18:09:25,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:09:25,541 INFO L87 Difference]: Start difference. First operand 508 states and 831 transitions. Second operand 4 states. [2018-10-24 18:09:28,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:09:28,066 INFO L93 Difference]: Finished difference Result 1742 states and 2991 transitions. [2018-10-24 18:09:28,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 18:09:28,067 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2018-10-24 18:09:28,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:09:28,080 INFO L225 Difference]: With dead ends: 1742 [2018-10-24 18:09:28,080 INFO L226 Difference]: Without dead ends: 1240 [2018-10-24 18:09:28,087 INFO L605 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 [2018-10-24 18:09:28,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2018-10-24 18:09:28,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2018-10-24 18:09:28,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1240 states. [2018-10-24 18:09:28,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1869 transitions. [2018-10-24 18:09:28,166 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1869 transitions. Word has length 106 [2018-10-24 18:09:28,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:09:28,167 INFO L481 AbstractCegarLoop]: Abstraction has 1240 states and 1869 transitions. [2018-10-24 18:09:28,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 18:09:28,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1869 transitions. [2018-10-24 18:09:28,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-10-24 18:09:28,180 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:09:28,180 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:09:28,180 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:09:28,180 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:09:28,181 INFO L82 PathProgramCache]: Analyzing trace with hash 815246527, now seen corresponding path program 1 times [2018-10-24 18:09:28,181 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:09:28,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:28,182 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:09:28,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:28,182 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:09:28,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:09:28,531 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:09:28,893 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:09:28,893 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:09:28,893 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:09:28,893 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:09:28,894 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:09:28,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:09:28,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:09:28,895 INFO L87 Difference]: Start difference. First operand 1240 states and 1869 transitions. Second operand 6 states. [2018-10-24 18:09:31,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:09:31,794 INFO L93 Difference]: Finished difference Result 2759 states and 4120 transitions. [2018-10-24 18:09:31,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:09:31,803 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 163 [2018-10-24 18:09:31,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:09:31,820 INFO L225 Difference]: With dead ends: 2759 [2018-10-24 18:09:31,821 INFO L226 Difference]: Without dead ends: 1525 [2018-10-24 18:09:31,830 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:09:31,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1525 states. [2018-10-24 18:09:31,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1525 to 1485. [2018-10-24 18:09:31,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1485 states. [2018-10-24 18:09:31,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 2034 transitions. [2018-10-24 18:09:31,885 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 2034 transitions. Word has length 163 [2018-10-24 18:09:31,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:09:31,886 INFO L481 AbstractCegarLoop]: Abstraction has 1485 states and 2034 transitions. [2018-10-24 18:09:31,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:09:31,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 2034 transitions. [2018-10-24 18:09:31,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-10-24 18:09:31,892 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:09:31,892 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:09:31,893 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:09:31,893 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:09:31,893 INFO L82 PathProgramCache]: Analyzing trace with hash 894893843, now seen corresponding path program 1 times [2018-10-24 18:09:31,893 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:09:31,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:31,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:09:31,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:31,895 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:09:31,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:09:32,255 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:09:32,673 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:09:32,673 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:09:32,673 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:09:32,673 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:09:32,674 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:09:32,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:09:32,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:09:32,675 INFO L87 Difference]: Start difference. First operand 1485 states and 2034 transitions. Second operand 6 states. [2018-10-24 18:09:34,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:09:34,202 INFO L93 Difference]: Finished difference Result 3547 states and 5008 transitions. [2018-10-24 18:09:34,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:09:34,203 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 169 [2018-10-24 18:09:34,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:09:34,216 INFO L225 Difference]: With dead ends: 3547 [2018-10-24 18:09:34,216 INFO L226 Difference]: Without dead ends: 2068 [2018-10-24 18:09:34,224 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:09:34,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2068 states. [2018-10-24 18:09:34,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2068 to 2051. [2018-10-24 18:09:34,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2051 states. [2018-10-24 18:09:34,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2051 states to 2051 states and 2708 transitions. [2018-10-24 18:09:34,283 INFO L78 Accepts]: Start accepts. Automaton has 2051 states and 2708 transitions. Word has length 169 [2018-10-24 18:09:34,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:09:34,283 INFO L481 AbstractCegarLoop]: Abstraction has 2051 states and 2708 transitions. [2018-10-24 18:09:34,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:09:34,284 INFO L276 IsEmpty]: Start isEmpty. Operand 2051 states and 2708 transitions. [2018-10-24 18:09:34,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-10-24 18:09:34,292 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:09:34,292 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:09:34,293 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:09:34,293 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:09:34,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1544642997, now seen corresponding path program 1 times [2018-10-24 18:09:34,293 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:09:34,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:34,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:09:34,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:34,295 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:09:34,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:09:34,609 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:09:34,813 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 39 proven. 6 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-24 18:09:34,813 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:09:34,813 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:09:34,814 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 244 with the following transitions: [2018-10-24 18:09:34,816 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [109], [111], [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], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 18:09:34,893 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:09:34,893 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:09:37,766 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:10:04,823 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:10:04,825 INFO L272 AbstractInterpreter]: Visited 145 different actions 840 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 18:10:04,840 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:10:04,840 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:10:09,325 INFO L232 lantSequenceWeakener]: Weakened 74 states. On average, predicates are now at 73.94% of their original sizes. [2018-10-24 18:10:09,326 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:10:36,959 INFO L413 sIntCurrentIteration]: We have 242 unified AI predicates [2018-10-24 18:10:36,959 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:10:36,960 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:10:36,960 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [8] total 30 [2018-10-24 18:10:36,961 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:10:36,961 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-24 18:10:36,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-24 18:10:36,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2018-10-24 18:10:36,962 INFO L87 Difference]: Start difference. First operand 2051 states and 2708 transitions. Second operand 24 states. Received shutdown request... [2018-10-24 18:13:13,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-24 18:13:13,747 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 18:13:13,752 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 18:13:13,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 06:13:13 BoogieIcfgContainer [2018-10-24 18:13:13,753 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 18:13:13,755 INFO L168 Benchmark]: Toolchain (without parser) took 237950.84 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-24 18:13:13,756 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 18:13:13,757 INFO L168 Benchmark]: CACSL2BoogieTranslator took 656.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-24 18:13:13,757 INFO L168 Benchmark]: Boogie Procedure Inliner took 205.66 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 728.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -807.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2018-10-24 18:13:13,758 INFO L168 Benchmark]: Boogie Preprocessor took 100.43 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2018-10-24 18:13:13,759 INFO L168 Benchmark]: RCFGBuilder took 3407.16 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 132.8 MB). Peak memory consumption was 132.8 MB. Max. memory is 7.1 GB. [2018-10-24 18:13:13,760 INFO L168 Benchmark]: TraceAbstraction took 233576.00 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.9 GB in the end (delta: -813.8 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-24 18:13:13,766 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 656.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 205.66 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 728.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -807.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 100.43 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3407.16 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 132.8 MB). Peak memory consumption was 132.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 233576.00 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.9 GB in the end (delta: -813.8 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 61]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 61). Cancelled while BasicCegarLoop was constructing difference of abstraction (2051states) and FLOYD_HOARE automaton (currently 30 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (3466 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 233.4s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 167.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 604 SDtfs, 5589 SDslu, 711 SDs, 0 SdLazy, 5940 SolverSat, 1043 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 83.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 294 GetRequests, 207 SyntacticMatches, 29 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 31.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2051occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 30.0s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.995126661875674 AbsIntWeakeningRatio, 0.10743801652892562 AbsIntAvgWeakeningVarsNumRemoved, 247.36776859504133 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 66 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 807 NumberOfCodeBlocks, 807 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 801 ConstructedInterpolants, 0 QuantifiedInterpolants, 675504 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 188/194 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown