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/Problem02_label42_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 23:27:36,094 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 23:27:36,096 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 23:27:36,110 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 23:27:36,110 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 23:27:36,111 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 23:27:36,113 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 23:27:36,115 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 23:27:36,116 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 23:27:36,117 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 23:27:36,118 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 23:27:36,119 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 23:27:36,120 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 23:27:36,121 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 23:27:36,122 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 23:27:36,123 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 23:27:36,124 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 23:27:36,126 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 23:27:36,128 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 23:27:36,129 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 23:27:36,131 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 23:27:36,132 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 23:27:36,135 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 23:27:36,145 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 [2018-10-23 23:27:36,162 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 23:27:36,163 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 23:27:36,165 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 23:27:36,166 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 23:27:36,166 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 23:27:36,166 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 23:27:36,166 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 23:27:36,166 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 23:27:36,167 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 23:27:36,167 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 23:27:36,167 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 23:27:36,167 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 23:27:36,168 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 23:27:36,168 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 23:27:36,168 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 23:27:36,168 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 23:27:36,169 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 23:27:36,169 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 23:27:36,169 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 23:27:36,169 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 23:27:36,169 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 23:27:36,170 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 23:27:36,170 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 23:27:36,170 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 23:27:36,170 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 23:27:36,171 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 23:27:36,171 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 23:27:36,171 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 23:27:36,171 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 23:27:36,171 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 23:27:36,172 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 23:27:36,172 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 23:27:36,172 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 23:27:36,172 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 23:27:36,215 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 23:27:36,230 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 23:27:36,235 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 23:27:36,236 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 23:27:36,237 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 23:27:36,238 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label42_true-unreach-call_false-termination.c [2018-10-23 23:27:36,314 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b743fb4a7/0b92cf574e8142e690c042ed62103ca7/FLAG1833fb4f3 [2018-10-23 23:27:36,863 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 23:27:36,864 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label42_true-unreach-call_false-termination.c [2018-10-23 23:27:36,880 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b743fb4a7/0b92cf574e8142e690c042ed62103ca7/FLAG1833fb4f3 [2018-10-23 23:27:36,896 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b743fb4a7/0b92cf574e8142e690c042ed62103ca7 [2018-10-23 23:27:36,908 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 23:27:36,910 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 23:27:36,912 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 23:27:36,912 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 23:27:36,916 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 23:27:36,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:27:36" (1/1) ... [2018-10-23 23:27:36,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67006ad9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:27:36, skipping insertion in model container [2018-10-23 23:27:36,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:27:36" (1/1) ... [2018-10-23 23:27:36,933 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 23:27:36,992 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 23:27:37,427 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:27:37,432 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 23:27:37,534 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:27:37,552 INFO L193 MainTranslator]: Completed translation [2018-10-23 23:27:37,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:27:37 WrapperNode [2018-10-23 23:27:37,553 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 23:27:37,554 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 23:27:37,554 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 23:27:37,554 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 23:27:37,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:27:37" (1/1) ... [2018-10-23 23:27:37,585 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:27:37" (1/1) ... [2018-10-23 23:27:37,763 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 23:27:37,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 23:27:37,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 23:27:37,764 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 23:27:37,776 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:27:37" (1/1) ... [2018-10-23 23:27:37,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:27:37" (1/1) ... [2018-10-23 23:27:37,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:27:37" (1/1) ... [2018-10-23 23:27:37,792 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:27:37" (1/1) ... [2018-10-23 23:27:37,836 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:27:37" (1/1) ... [2018-10-23 23:27:37,862 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:27:37" (1/1) ... [2018-10-23 23:27:37,875 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:27:37" (1/1) ... [2018-10-23 23:27:37,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 23:27:37,892 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 23:27:37,892 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 23:27:37,892 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 23:27:37,893 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:27:37" (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 [2018-10-23 23:27:37,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 23:27:37,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 23:27:37,977 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 23:27:37,977 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 23:27:37,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 23:27:37,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 23:27:37,977 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 23:27:37,978 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 23:27:41,554 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 23:27:41,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:27:41 BoogieIcfgContainer [2018-10-23 23:27:41,555 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 23:27:41,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 23:27:41,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 23:27:41,568 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 23:27:41,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 11:27:36" (1/3) ... [2018-10-23 23:27:41,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed2c4d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:27:41, skipping insertion in model container [2018-10-23 23:27:41,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:27:37" (2/3) ... [2018-10-23 23:27:41,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ed2c4d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:27:41, skipping insertion in model container [2018-10-23 23:27:41,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:27:41" (3/3) ... [2018-10-23 23:27:41,578 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label42_true-unreach-call_false-termination.c [2018-10-23 23:27:41,590 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 23:27:41,600 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 23:27:41,621 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 23:27:41,664 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 23:27:41,664 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 23:27:41,664 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 23:27:41,665 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 23:27:41,665 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 23:27:41,665 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 23:27:41,666 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 23:27:41,666 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 23:27:41,698 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-10-23 23:27:41,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-10-23 23:27:41,712 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:27:41,714 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:27:41,717 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:27:41,724 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:27:41,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1675819633, now seen corresponding path program 1 times [2018-10-23 23:27:41,728 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:27:41,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:27:41,794 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:27:41,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:27:41,794 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:27:41,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:27:42,299 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 23:27:42,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:27:42,453 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:27:42,454 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 23:27:42,454 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:27:42,462 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 23:27:42,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 23:27:42,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:27:42,488 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 3 states. [2018-10-23 23:27:44,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:27:44,231 INFO L93 Difference]: Finished difference Result 621 states and 1059 transitions. [2018-10-23 23:27:44,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 23:27:44,234 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2018-10-23 23:27:44,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:27:44,254 INFO L225 Difference]: With dead ends: 621 [2018-10-23 23:27:44,254 INFO L226 Difference]: Without dead ends: 382 [2018-10-23 23:27:44,261 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 [2018-10-23 23:27:44,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2018-10-23 23:27:44,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2018-10-23 23:27:44,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2018-10-23 23:27:44,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 608 transitions. [2018-10-23 23:27:44,351 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 608 transitions. Word has length 107 [2018-10-23 23:27:44,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:27:44,353 INFO L481 AbstractCegarLoop]: Abstraction has 382 states and 608 transitions. [2018-10-23 23:27:44,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 23:27:44,353 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 608 transitions. [2018-10-23 23:27:44,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-23 23:27:44,360 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:27:44,360 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 23:27:44,361 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:27:44,361 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:27:44,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1274103906, now seen corresponding path program 1 times [2018-10-23 23:27:44,362 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:27:44,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:27:44,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:27:44,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:27:44,364 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:27:44,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:27:44,633 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:27:44,634 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:27:44,634 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 23:27:44,635 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:27:44,637 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 23:27:44,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 23:27:44,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:27:44,638 INFO L87 Difference]: Start difference. First operand 382 states and 608 transitions. Second operand 3 states. [2018-10-23 23:27:46,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:27:46,071 INFO L93 Difference]: Finished difference Result 1057 states and 1749 transitions. [2018-10-23 23:27:46,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 23:27:46,073 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 116 [2018-10-23 23:27:46,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:27:46,083 INFO L225 Difference]: With dead ends: 1057 [2018-10-23 23:27:46,083 INFO L226 Difference]: Without dead ends: 681 [2018-10-23 23:27:46,091 INFO L605 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 [2018-10-23 23:27:46,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2018-10-23 23:27:46,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 676. [2018-10-23 23:27:46,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 676 states. [2018-10-23 23:27:46,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 1044 transitions. [2018-10-23 23:27:46,150 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 1044 transitions. Word has length 116 [2018-10-23 23:27:46,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:27:46,151 INFO L481 AbstractCegarLoop]: Abstraction has 676 states and 1044 transitions. [2018-10-23 23:27:46,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 23:27:46,152 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 1044 transitions. [2018-10-23 23:27:46,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-23 23:27:46,158 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:27:46,159 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 23:27:46,159 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:27:46,159 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:27:46,160 INFO L82 PathProgramCache]: Analyzing trace with hash 63225070, now seen corresponding path program 1 times [2018-10-23 23:27:46,160 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:27:46,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:27:46,161 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:27:46,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:27:46,162 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:27:46,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:27:46,481 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 22 [2018-10-23 23:27:46,636 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2018-10-23 23:27:46,740 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:27:46,740 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:27:46,740 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 23:27:46,740 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:27:46,741 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 23:27:46,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 23:27:46,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:27:46,742 INFO L87 Difference]: Start difference. First operand 676 states and 1044 transitions. Second operand 5 states. [2018-10-23 23:27:48,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:27:48,568 INFO L93 Difference]: Finished difference Result 1491 states and 2375 transitions. [2018-10-23 23:27:48,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 23:27:48,569 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2018-10-23 23:27:48,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:27:48,576 INFO L225 Difference]: With dead ends: 1491 [2018-10-23 23:27:48,576 INFO L226 Difference]: Without dead ends: 675 [2018-10-23 23:27:48,580 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:27:48,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2018-10-23 23:27:48,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 675. [2018-10-23 23:27:48,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 675 states. [2018-10-23 23:27:48,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1032 transitions. [2018-10-23 23:27:48,621 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1032 transitions. Word has length 122 [2018-10-23 23:27:48,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:27:48,621 INFO L481 AbstractCegarLoop]: Abstraction has 675 states and 1032 transitions. [2018-10-23 23:27:48,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 23:27:48,622 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1032 transitions. [2018-10-23 23:27:48,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-23 23:27:48,626 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:27:48,627 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 23:27:48,627 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:27:48,627 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:27:48,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1081888773, now seen corresponding path program 1 times [2018-10-23 23:27:48,629 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:27:48,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:27:48,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:27:48,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:27:48,631 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:27:48,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:27:48,874 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 23:27:49,113 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:27:49,113 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:27:49,114 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 23:27:49,114 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:27:49,114 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 23:27:49,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 23:27:49,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 23:27:49,115 INFO L87 Difference]: Start difference. First operand 675 states and 1032 transitions. Second operand 6 states. [2018-10-23 23:27:51,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:27:51,136 INFO L93 Difference]: Finished difference Result 1489 states and 2269 transitions. [2018-10-23 23:27:51,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 23:27:51,143 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2018-10-23 23:27:51,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:27:51,149 INFO L225 Difference]: With dead ends: 1489 [2018-10-23 23:27:51,150 INFO L226 Difference]: Without dead ends: 820 [2018-10-23 23:27:51,153 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 23:27:51,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2018-10-23 23:27:51,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 810. [2018-10-23 23:27:51,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 810 states. [2018-10-23 23:27:51,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 1137 transitions. [2018-10-23 23:27:51,188 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 1137 transitions. Word has length 130 [2018-10-23 23:27:51,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:27:51,188 INFO L481 AbstractCegarLoop]: Abstraction has 810 states and 1137 transitions. [2018-10-23 23:27:51,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 23:27:51,189 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 1137 transitions. [2018-10-23 23:27:51,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-23 23:27:51,192 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:27:51,192 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2018-10-23 23:27:51,192 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:27:51,193 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:27:51,193 INFO L82 PathProgramCache]: Analyzing trace with hash 507940818, now seen corresponding path program 1 times [2018-10-23 23:27:51,193 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:27:51,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:27:51,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:27:51,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:27:51,195 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:27:51,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:27:51,412 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:27:51,413 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:27:51,413 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 23:27:51,414 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 140 with the following transitions: [2018-10-23 23:27:51,417 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [53], [64], [68], [72], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [527], [529], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-23 23:27:51,513 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 23:27:51,514 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 23:28:01,351 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 23:28:01,352 INFO L272 AbstractInterpreter]: Visited 108 different actions 108 times. Never merged. Never widened. Never found a fixpoint. Largest state had 38 variables. [2018-10-23 23:28:01,366 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:28:01,366 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 23:28:04,745 INFO L232 lantSequenceWeakener]: Weakened 118 states. On average, predicates are now at 81.18% of their original sizes. [2018-10-23 23:28:04,746 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 23:28:08,507 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 23:28:08,508 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 23:28:08,508 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2018-10-23 23:28:08,508 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:28:08,509 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-23 23:28:08,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-23 23:28:08,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2018-10-23 23:28:08,510 INFO L87 Difference]: Start difference. First operand 810 states and 1137 transitions. Second operand 13 states. [2018-10-23 23:29:59,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:29:59,229 INFO L93 Difference]: Finished difference Result 1914 states and 2695 transitions. [2018-10-23 23:29:59,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-23 23:29:59,229 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 139 [2018-10-23 23:29:59,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:29:59,235 INFO L225 Difference]: With dead ends: 1914 [2018-10-23 23:29:59,236 INFO L226 Difference]: Without dead ends: 1110 [2018-10-23 23:29:59,239 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 149 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2018-10-23 23:29:59,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2018-10-23 23:29:59,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 957. [2018-10-23 23:29:59,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 957 states. [2018-10-23 23:29:59,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1292 transitions. [2018-10-23 23:29:59,338 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1292 transitions. Word has length 139 [2018-10-23 23:29:59,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:29:59,338 INFO L481 AbstractCegarLoop]: Abstraction has 957 states and 1292 transitions. [2018-10-23 23:29:59,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-23 23:29:59,339 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1292 transitions. [2018-10-23 23:29:59,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-23 23:29:59,342 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:29:59,342 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-23 23:29:59,343 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:29:59,343 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:29:59,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1244996254, now seen corresponding path program 1 times [2018-10-23 23:29:59,343 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:29:59,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:29:59,344 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:29:59,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:29:59,345 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:29:59,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:29:59,609 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 26 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:29:59,610 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:29:59,610 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 23:29:59,610 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 145 with the following transitions: [2018-10-23 23:29:59,611 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [25], [26], [30], [34], [38], [42], [53], [64], [68], [72], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [527], [529], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-23 23:29:59,617 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 23:29:59,617 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 23:31:02,749 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 23:31:02,750 INFO L272 AbstractInterpreter]: Visited 111 different actions 432 times. Merged at 7 different actions 21 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 38 variables. [2018-10-23 23:31:02,759 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:31:02,759 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 23:31:06,947 INFO L232 lantSequenceWeakener]: Weakened 6 states. On average, predicates are now at 86.11% of their original sizes. [2018-10-23 23:31:06,947 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-23 23:31:56,398 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 23:31:56,404 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 23:31:56,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 11:31:56 BoogieIcfgContainer [2018-10-23 23:31:56,405 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 23:31:56,406 INFO L168 Benchmark]: Toolchain (without parser) took 259496.79 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 3.3 GB in the end (delta: -1.9 GB). Peak memory consumption was 519.6 MB. Max. memory is 7.1 GB. [2018-10-23 23:31:56,407 INFO L168 Benchmark]: CDTParser took 0.54 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 23:31:56,408 INFO L168 Benchmark]: CACSL2BoogieTranslator took 641.85 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. [2018-10-23 23:31:56,409 INFO L168 Benchmark]: Boogie Procedure Inliner took 208.88 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 724.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -811.3 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2018-10-23 23:31:56,410 INFO L168 Benchmark]: Boogie Preprocessor took 128.33 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. [2018-10-23 23:31:56,411 INFO L168 Benchmark]: RCFGBuilder took 3663.42 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 107.1 MB). Peak memory consumption was 107.1 MB. Max. memory is 7.1 GB. [2018-10-23 23:31:56,412 INFO L168 Benchmark]: TraceAbstraction took 254845.01 ms. Allocated memory was 2.2 GB in the beginning and 3.9 GB in the end (delta: 1.7 GB). Free memory was 2.1 GB in the beginning and 3.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 464.0 MB. Max. memory is 7.1 GB. [2018-10-23 23:31:56,422 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 641.85 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 208.88 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 724.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -811.3 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.33 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3663.42 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 107.1 MB). Peak memory consumption was 107.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 254845.01 ms. Allocated memory was 2.2 GB in the beginning and 3.9 GB in the end (delta: 1.7 GB). Free memory was 2.1 GB in the beginning and 3.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 464.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 472]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 472). Cancelled while BasicCegarLoop was analyzing trace of length 145 with TraceHistMax 3,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 13 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 254.7s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 117.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1031 SDtfs, 2793 SDslu, 692 SDs, 0 SdLazy, 3189 SolverSat, 699 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 61.6s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 175 GetRequests, 136 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 7.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=957occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 73.1s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9937886941071056 AbsIntWeakeningRatio, 0.23487544483985764 AbsIntAvgWeakeningVarsNumRemoved, 1731.7686832740214 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 168 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 614 NumberOfCodeBlocks, 614 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 609 ConstructedInterpolants, 0 QuantifiedInterpolants, 362541 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 71/73 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown