java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label01_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 03:23:12,349 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 03:23:12,351 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 03:23:12,365 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 03:23:12,366 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 03:23:12,369 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 03:23:12,371 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 03:23:12,373 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 03:23:12,376 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 03:23:12,377 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 03:23:12,378 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 03:23:12,379 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 03:23:12,380 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 03:23:12,382 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 03:23:12,385 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 03:23:12,392 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 03:23:12,393 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 03:23:12,396 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 03:23:12,399 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 03:23:12,403 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 03:23:12,404 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 03:23:12,406 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 03:23:12,409 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 03:23:12,422 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 03:23:12,449 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 03:23:12,449 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 03:23:12,456 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 03:23:12,456 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 03:23:12,456 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 03:23:12,456 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 03:23:12,456 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 03:23:12,457 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 03:23:12,457 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 03:23:12,457 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 03:23:12,458 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 03:23:12,458 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 03:23:12,459 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 03:23:12,459 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 03:23:12,459 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 03:23:12,459 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 03:23:12,459 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 03:23:12,461 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 03:23:12,461 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 03:23:12,461 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 03:23:12,461 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 03:23:12,461 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 03:23:12,462 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 03:23:12,462 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 03:23:12,462 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 03:23:12,462 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 03:23:12,462 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 03:23:12,463 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 03:23:12,463 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 03:23:12,463 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 03:23:12,463 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 03:23:12,464 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 03:23:12,464 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 03:23:12,464 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 03:23:12,529 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 03:23:12,546 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 03:23:12,551 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 03:23:12,553 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 03:23:12,553 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 03:23:12,554 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label01_true-unreach-call_false-termination.c [2018-11-07 03:23:12,628 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/617fffa7e/ce82650e0f9448758db44a1ee5a670ac/FLAGd17ecb323 [2018-11-07 03:23:13,163 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 03:23:13,164 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label01_true-unreach-call_false-termination.c [2018-11-07 03:23:13,186 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/617fffa7e/ce82650e0f9448758db44a1ee5a670ac/FLAGd17ecb323 [2018-11-07 03:23:13,206 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/617fffa7e/ce82650e0f9448758db44a1ee5a670ac [2018-11-07 03:23:13,219 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 03:23:13,222 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 03:23:13,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 03:23:13,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 03:23:13,231 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 03:23:13,232 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:23:13" (1/1) ... [2018-11-07 03:23:13,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b1de55c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:23:13, skipping insertion in model container [2018-11-07 03:23:13,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:23:13" (1/1) ... [2018-11-07 03:23:13,247 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 03:23:13,328 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 03:23:13,875 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:23:13,881 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 03:23:14,008 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:23:14,026 INFO L193 MainTranslator]: Completed translation [2018-11-07 03:23:14,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:23:14 WrapperNode [2018-11-07 03:23:14,027 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 03:23:14,028 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 03:23:14,028 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 03:23:14,028 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 03:23:14,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:23:14" (1/1) ... [2018-11-07 03:23:14,154 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:23:14" (1/1) ... [2018-11-07 03:23:14,165 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 03:23:14,165 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 03:23:14,165 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 03:23:14,165 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 03:23:14,188 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:23:14" (1/1) ... [2018-11-07 03:23:14,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:23:14" (1/1) ... [2018-11-07 03:23:14,201 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:23:14" (1/1) ... [2018-11-07 03:23:14,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:23:14" (1/1) ... [2018-11-07 03:23:14,264 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:23:14" (1/1) ... [2018-11-07 03:23:14,289 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:23:14" (1/1) ... [2018-11-07 03:23:14,307 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:23:14" (1/1) ... [2018-11-07 03:23:14,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 03:23:14,322 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 03:23:14,323 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 03:23:14,323 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 03:23:14,324 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:23:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 03:23:14,394 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 03:23:14,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 03:23:14,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 03:23:14,394 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 03:23:14,394 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 03:23:14,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 03:23:14,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 03:23:14,395 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 03:23:14,395 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 03:23:17,771 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 03:23:17,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:23:17 BoogieIcfgContainer [2018-11-07 03:23:17,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 03:23:17,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 03:23:17,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 03:23:17,777 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 03:23:17,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:23:13" (1/3) ... [2018-11-07 03:23:17,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e52ef58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:23:17, skipping insertion in model container [2018-11-07 03:23:17,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:23:14" (2/3) ... [2018-11-07 03:23:17,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e52ef58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:23:17, skipping insertion in model container [2018-11-07 03:23:17,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:23:17" (3/3) ... [2018-11-07 03:23:17,782 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label01_true-unreach-call_false-termination.c [2018-11-07 03:23:17,792 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 03:23:17,801 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 03:23:17,816 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 03:23:17,856 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 03:23:17,856 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 03:23:17,856 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 03:23:17,857 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 03:23:17,857 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 03:23:17,857 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 03:23:17,857 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 03:23:17,857 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 03:23:17,886 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-07 03:23:17,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-11-07 03:23:17,896 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:23:17,897 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] [2018-11-07 03:23:17,900 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:23:17,905 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:23:17,906 INFO L82 PathProgramCache]: Analyzing trace with hash 105664553, now seen corresponding path program 1 times [2018-11-07 03:23:17,908 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:23:17,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:23:17,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:23:17,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:23:17,953 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:23:18,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:23:18,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:23:18,412 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:23:18,412 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 03:23:18,412 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:23:18,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 03:23:18,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 03:23:18,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 03:23:18,440 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-11-07 03:23:20,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:23:20,231 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-11-07 03:23:20,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 03:23:20,235 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2018-11-07 03:23:20,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:23:20,253 INFO L225 Difference]: With dead ends: 691 [2018-11-07 03:23:20,254 INFO L226 Difference]: Without dead ends: 434 [2018-11-07 03:23:20,262 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 03:23:20,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-11-07 03:23:20,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-11-07 03:23:20,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-11-07 03:23:20,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 767 transitions. [2018-11-07 03:23:20,343 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 767 transitions. Word has length 61 [2018-11-07 03:23:20,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:23:20,344 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 767 transitions. [2018-11-07 03:23:20,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 03:23:20,344 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 767 transitions. [2018-11-07 03:23:20,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-11-07 03:23:20,353 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:23:20,354 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 03:23:20,354 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:23:20,354 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:23:20,354 INFO L82 PathProgramCache]: Analyzing trace with hash -175237717, now seen corresponding path program 1 times [2018-11-07 03:23:20,355 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:23:20,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:23:20,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:23:20,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:23:20,356 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:23:20,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:23:20,630 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:23:20,631 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:23:20,631 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 03:23:20,631 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:23:20,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 03:23:20,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 03:23:20,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 03:23:20,634 INFO L87 Difference]: Start difference. First operand 434 states and 767 transitions. Second operand 5 states. [2018-11-07 03:23:24,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:23:24,237 INFO L93 Difference]: Finished difference Result 1416 states and 2580 transitions. [2018-11-07 03:23:24,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 03:23:24,238 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2018-11-07 03:23:24,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:23:24,247 INFO L225 Difference]: With dead ends: 1416 [2018-11-07 03:23:24,247 INFO L226 Difference]: Without dead ends: 988 [2018-11-07 03:23:24,253 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 03:23:24,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2018-11-07 03:23:24,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 973. [2018-11-07 03:23:24,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 973 states. [2018-11-07 03:23:24,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1540 transitions. [2018-11-07 03:23:24,316 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1540 transitions. Word has length 138 [2018-11-07 03:23:24,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:23:24,316 INFO L480 AbstractCegarLoop]: Abstraction has 973 states and 1540 transitions. [2018-11-07 03:23:24,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 03:23:24,317 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1540 transitions. [2018-11-07 03:23:24,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-11-07 03:23:24,323 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:23:24,324 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 03:23:24,324 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:23:24,324 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:23:24,324 INFO L82 PathProgramCache]: Analyzing trace with hash -683828693, now seen corresponding path program 1 times [2018-11-07 03:23:24,325 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:23:24,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:23:24,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:23:24,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:23:24,326 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:23:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:23:24,680 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:23:24,680 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:23:24,682 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 03:23:24,682 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:23:24,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:23:24,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:23:24,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:23:24,684 INFO L87 Difference]: Start difference. First operand 973 states and 1540 transitions. Second operand 6 states. [2018-11-07 03:23:27,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:23:27,747 INFO L93 Difference]: Finished difference Result 2347 states and 3916 transitions. [2018-11-07 03:23:27,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:23:27,748 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 202 [2018-11-07 03:23:27,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:23:27,759 INFO L225 Difference]: With dead ends: 2347 [2018-11-07 03:23:27,760 INFO L226 Difference]: Without dead ends: 1380 [2018-11-07 03:23:27,764 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 03:23:27,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1380 states. [2018-11-07 03:23:27,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1380 to 1352. [2018-11-07 03:23:27,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2018-11-07 03:23:27,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 2126 transitions. [2018-11-07 03:23:27,816 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 2126 transitions. Word has length 202 [2018-11-07 03:23:27,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:23:27,817 INFO L480 AbstractCegarLoop]: Abstraction has 1352 states and 2126 transitions. [2018-11-07 03:23:27,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:23:27,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 2126 transitions. [2018-11-07 03:23:27,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-11-07 03:23:27,822 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:23:27,822 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:23:27,823 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:23:27,823 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:23:27,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1369870952, now seen corresponding path program 1 times [2018-11-07 03:23:27,823 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:23:27,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:23:27,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:23:27,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:23:27,825 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:23:27,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:23:28,013 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 180 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:23:28,013 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:23:28,014 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:23:28,014 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 213 with the following transitions: [2018-11-07 03:23:28,017 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [389], [391], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [522], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 03:23:28,081 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:23:28,082 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:23:29,624 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:23:30,125 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:23:30,126 INFO L272 AbstractInterpreter]: Visited 82 different actions 82 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 03:23:30,141 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:23:30,141 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:23:31,902 INFO L227 lantSequenceWeakener]: Weakened 204 states. On average, predicates are now at 78.33% of their original sizes. [2018-11-07 03:23:31,902 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:23:32,217 INFO L415 sIntCurrentIteration]: We unified 211 AI predicates to 211 [2018-11-07 03:23:32,217 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:23:32,218 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:23:32,218 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 03:23:32,218 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:23:32,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 03:23:32,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 03:23:32,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 03:23:32,220 INFO L87 Difference]: Start difference. First operand 1352 states and 2126 transitions. Second operand 7 states. [2018-11-07 03:24:02,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:24:02,483 INFO L93 Difference]: Finished difference Result 2883 states and 4473 transitions. [2018-11-07 03:24:02,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:24:02,484 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 212 [2018-11-07 03:24:02,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:24:02,493 INFO L225 Difference]: With dead ends: 2883 [2018-11-07 03:24:02,493 INFO L226 Difference]: Without dead ends: 1537 [2018-11-07 03:24:02,498 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 212 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 03:24:02,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1537 states. [2018-11-07 03:24:02,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1537 to 1535. [2018-11-07 03:24:02,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1535 states. [2018-11-07 03:24:02,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 2316 transitions. [2018-11-07 03:24:02,547 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 2316 transitions. Word has length 212 [2018-11-07 03:24:02,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:24:02,548 INFO L480 AbstractCegarLoop]: Abstraction has 1535 states and 2316 transitions. [2018-11-07 03:24:02,548 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 03:24:02,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 2316 transitions. [2018-11-07 03:24:02,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2018-11-07 03:24:02,555 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:24:02,555 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:24:02,555 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:24:02,556 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:24:02,556 INFO L82 PathProgramCache]: Analyzing trace with hash -50001898, now seen corresponding path program 1 times [2018-11-07 03:24:02,556 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:24:02,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:24:02,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:24:02,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:24:02,558 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:24:02,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:24:03,350 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-11-07 03:24:03,350 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:24:03,350 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:24:03,351 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 298 with the following transitions: [2018-11-07 03:24:03,351 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [389], [391], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [551], [554], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 03:24:03,365 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:24:03,365 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:24:04,012 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:24:06,237 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:24:06,237 INFO L272 AbstractInterpreter]: Visited 94 different actions 181 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 03:24:06,246 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:24:06,246 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:24:09,045 INFO L227 lantSequenceWeakener]: Weakened 40 states. On average, predicates are now at 79.43% of their original sizes. [2018-11-07 03:24:09,046 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:24:55,964 INFO L415 sIntCurrentIteration]: We unified 296 AI predicates to 296 [2018-11-07 03:24:55,965 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:24:55,965 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:24:55,965 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [7] total 22 [2018-11-07 03:24:55,965 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:24:55,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 03:24:55,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 03:24:55,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2018-11-07 03:24:55,967 INFO L87 Difference]: Start difference. First operand 1535 states and 2316 transitions. Second operand 17 states. Received shutdown request... [2018-11-07 03:27:16,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-07 03:27:16,895 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 03:27:16,900 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 03:27:16,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 03:27:16 BoogieIcfgContainer [2018-11-07 03:27:16,900 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 03:27:16,901 INFO L168 Benchmark]: Toolchain (without parser) took 243681.22 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 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 1.1 GB. Max. memory is 7.1 GB. [2018-11-07 03:27:16,903 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-11-07 03:27:16,903 INFO L168 Benchmark]: CACSL2BoogieTranslator took 802.16 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-11-07 03:27:16,904 INFO L168 Benchmark]: Boogie Procedure Inliner took 137.03 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 733.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -826.7 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2018-11-07 03:27:16,905 INFO L168 Benchmark]: Boogie Preprocessor took 157.08 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 03:27:16,906 INFO L168 Benchmark]: RCFGBuilder took 3450.06 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: 132.4 MB). Peak memory consumption was 132.4 MB. Max. memory is 7.1 GB. [2018-11-07 03:27:16,906 INFO L168 Benchmark]: TraceAbstraction took 239126.58 ms. Allocated memory was 2.3 GB in the beginning and 4.1 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: -888.9 MB). Peak memory consumption was 961.9 MB. Max. memory is 7.1 GB. [2018-11-07 03:27:16,911 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 802.16 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 137.03 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 733.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -826.7 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 157.08 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3450.06 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: 132.4 MB). Peak memory consumption was 132.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 239126.58 ms. Allocated memory was 2.3 GB in the beginning and 4.1 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: -888.9 MB). Peak memory consumption was 961.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 166]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 166). Cancelled while BasicCegarLoop was constructing difference of abstraction (1535states) and FLOYD_HOARE automaton (currently 18 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (2832 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 239.0s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 179.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 707 SDtfs, 5057 SDslu, 742 SDs, 0 SdLazy, 6697 SolverSat, 1064 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 75.4s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 538 GetRequests, 434 SyntacticMatches, 63 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 48.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1535occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 5.0s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9951798016179284 AbsIntWeakeningRatio, 0.11439842209072978 AbsIntAvgWeakeningVarsNumRemoved, 533.2879684418145 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 45 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 910 NumberOfCodeBlocks, 910 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 905 ConstructedInterpolants, 0 QuantifiedInterpolants, 527081 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 673/677 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown