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_label56_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 00:21:06,353 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 00:21:06,355 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 00:21:06,374 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 00:21:06,374 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 00:21:06,376 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 00:21:06,377 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 00:21:06,380 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 00:21:06,383 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 00:21:06,384 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 00:21:06,393 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 00:21:06,393 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 00:21:06,394 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 00:21:06,397 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 00:21:06,399 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 00:21:06,400 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 00:21:06,400 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 00:21:06,404 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 00:21:06,408 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 00:21:06,409 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 00:21:06,412 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 00:21:06,413 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 00:21:06,416 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 00:21:06,427 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 00:21:06,454 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 00:21:06,455 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 00:21:06,456 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 00:21:06,456 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 00:21:06,457 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 00:21:06,457 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 00:21:06,457 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 00:21:06,457 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 00:21:06,457 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 00:21:06,458 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 00:21:06,458 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 00:21:06,458 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 00:21:06,459 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 00:21:06,460 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 00:21:06,460 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 00:21:06,460 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 00:21:06,460 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 00:21:06,460 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 00:21:06,461 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 00:21:06,461 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 00:21:06,461 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 00:21:06,461 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 00:21:06,461 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 00:21:06,462 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 00:21:06,462 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:21:06,462 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 00:21:06,462 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 00:21:06,462 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 00:21:06,463 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 00:21:06,463 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 00:21:06,463 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 00:21:06,463 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 00:21:06,463 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 00:21:06,464 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 00:21:06,512 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 00:21:06,528 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 00:21:06,534 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 00:21:06,535 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 00:21:06,536 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 00:21:06,537 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label56_false-unreach-call_false-termination.c [2018-11-07 00:21:06,615 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc8af32ae/bf299a94ba0a4f8eab19be6008c55707/FLAG86904c753 [2018-11-07 00:21:07,219 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 00:21:07,222 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label56_false-unreach-call_false-termination.c [2018-11-07 00:21:07,243 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc8af32ae/bf299a94ba0a4f8eab19be6008c55707/FLAG86904c753 [2018-11-07 00:21:07,258 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc8af32ae/bf299a94ba0a4f8eab19be6008c55707 [2018-11-07 00:21:07,270 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 00:21:07,271 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 00:21:07,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 00:21:07,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 00:21:07,280 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 00:21:07,281 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:21:07" (1/1) ... [2018-11-07 00:21:07,285 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f0bb127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:21:07, skipping insertion in model container [2018-11-07 00:21:07,285 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:21:07" (1/1) ... [2018-11-07 00:21:07,297 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 00:21:07,369 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 00:21:07,917 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:21:07,922 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 00:21:08,119 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:21:08,142 INFO L193 MainTranslator]: Completed translation [2018-11-07 00:21:08,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:21:08 WrapperNode [2018-11-07 00:21:08,143 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 00:21:08,144 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 00:21:08,144 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 00:21:08,144 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 00:21:08,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:21:08" (1/1) ... [2018-11-07 00:21:08,291 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:21:08" (1/1) ... [2018-11-07 00:21:08,307 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 00:21:08,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 00:21:08,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 00:21:08,308 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 00:21:08,319 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:21:08" (1/1) ... [2018-11-07 00:21:08,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:21:08" (1/1) ... [2018-11-07 00:21:08,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:21:08" (1/1) ... [2018-11-07 00:21:08,325 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:21:08" (1/1) ... [2018-11-07 00:21:08,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:21:08" (1/1) ... [2018-11-07 00:21:08,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:21:08" (1/1) ... [2018-11-07 00:21:08,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:21:08" (1/1) ... [2018-11-07 00:21:08,419 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 00:21:08,420 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 00:21:08,420 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 00:21:08,420 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 00:21:08,421 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:21:08" (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 00:21:08,489 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 00:21:08,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 00:21:08,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 00:21:08,490 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 00:21:08,491 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 00:21:08,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 00:21:08,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 00:21:08,491 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 00:21:08,491 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 00:21:11,866 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 00:21:11,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:21:11 BoogieIcfgContainer [2018-11-07 00:21:11,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 00:21:11,868 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 00:21:11,868 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 00:21:11,872 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 00:21:11,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:21:07" (1/3) ... [2018-11-07 00:21:11,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ef82a39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:21:11, skipping insertion in model container [2018-11-07 00:21:11,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:21:08" (2/3) ... [2018-11-07 00:21:11,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ef82a39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:21:11, skipping insertion in model container [2018-11-07 00:21:11,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:21:11" (3/3) ... [2018-11-07 00:21:11,876 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label56_false-unreach-call_false-termination.c [2018-11-07 00:21:11,886 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 00:21:11,897 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 00:21:11,917 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 00:21:11,966 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 00:21:11,966 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 00:21:11,966 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 00:21:11,966 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 00:21:11,966 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 00:21:11,967 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 00:21:11,967 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 00:21:11,967 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 00:21:11,995 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-07 00:21:12,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-07 00:21:12,002 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:21:12,003 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] [2018-11-07 00:21:12,006 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:21:12,011 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:21:12,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1546404148, now seen corresponding path program 1 times [2018-11-07 00:21:12,014 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:21:12,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:21:12,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:21:12,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:21:12,071 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:21:12,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:21:12,372 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 00:21:12,374 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:21:12,376 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 00:21:12,376 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:21:12,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 00:21:12,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 00:21:12,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:21:12,398 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-11-07 00:21:14,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:21:14,530 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-11-07 00:21:14,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 00:21:14,534 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2018-11-07 00:21:14,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:21:14,553 INFO L225 Difference]: With dead ends: 691 [2018-11-07 00:21:14,554 INFO L226 Difference]: Without dead ends: 434 [2018-11-07 00:21:14,562 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 00:21:14,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-11-07 00:21:14,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-11-07 00:21:14,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-11-07 00:21:14,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-11-07 00:21:14,647 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 24 [2018-11-07 00:21:14,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:21:14,648 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-11-07 00:21:14,648 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 00:21:14,648 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-11-07 00:21:14,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-11-07 00:21:14,654 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:21:14,655 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 00:21:14,655 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:21:14,656 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:21:14,656 INFO L82 PathProgramCache]: Analyzing trace with hash -412678633, now seen corresponding path program 1 times [2018-11-07 00:21:14,656 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:21:14,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:21:14,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:21:14,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:21:14,658 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:21:14,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:21:15,036 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:21:15,037 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:21:15,037 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:21:15,037 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:21:15,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:21:15,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:21:15,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:21:15,040 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-11-07 00:21:17,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:21:17,032 INFO L93 Difference]: Finished difference Result 1062 states and 1897 transitions. [2018-11-07 00:21:17,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:21:17,035 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2018-11-07 00:21:17,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:21:17,042 INFO L225 Difference]: With dead ends: 1062 [2018-11-07 00:21:17,042 INFO L226 Difference]: Without dead ends: 634 [2018-11-07 00:21:17,045 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 00:21:17,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2018-11-07 00:21:17,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 625. [2018-11-07 00:21:17,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2018-11-07 00:21:17,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1019 transitions. [2018-11-07 00:21:17,091 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1019 transitions. Word has length 111 [2018-11-07 00:21:17,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:21:17,092 INFO L480 AbstractCegarLoop]: Abstraction has 625 states and 1019 transitions. [2018-11-07 00:21:17,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:21:17,093 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1019 transitions. [2018-11-07 00:21:17,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-11-07 00:21:17,097 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:21:17,097 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 00:21:17,098 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:21:17,098 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:21:17,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1086282972, now seen corresponding path program 1 times [2018-11-07 00:21:17,099 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:21:17,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:21:17,100 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:21:17,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:21:17,100 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:21:17,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:21:17,321 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:21:17,322 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:21:17,322 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 00:21:17,322 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:21:17,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 00:21:17,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 00:21:17,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:21:17,324 INFO L87 Difference]: Start difference. First operand 625 states and 1019 transitions. Second operand 4 states. [2018-11-07 00:21:21,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:21:21,756 INFO L93 Difference]: Finished difference Result 2167 states and 3655 transitions. [2018-11-07 00:21:21,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-07 00:21:21,758 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2018-11-07 00:21:21,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:21:21,773 INFO L225 Difference]: With dead ends: 2167 [2018-11-07 00:21:21,773 INFO L226 Difference]: Without dead ends: 1172 [2018-11-07 00:21:21,785 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-07 00:21:21,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2018-11-07 00:21:21,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1172. [2018-11-07 00:21:21,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1172 states. [2018-11-07 00:21:21,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1890 transitions. [2018-11-07 00:21:21,856 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1890 transitions. Word has length 120 [2018-11-07 00:21:21,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:21:21,856 INFO L480 AbstractCegarLoop]: Abstraction has 1172 states and 1890 transitions. [2018-11-07 00:21:21,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 00:21:21,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1890 transitions. [2018-11-07 00:21:21,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-11-07 00:21:21,869 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:21:21,869 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:21:21,869 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:21:21,870 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:21:21,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1482099072, now seen corresponding path program 1 times [2018-11-07 00:21:21,870 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:21:21,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:21:21,871 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:21:21,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:21:21,872 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:21:21,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:21:22,098 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-07 00:21:22,099 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:21:22,099 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 00:21:22,099 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:21:22,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 00:21:22,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 00:21:22,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:21:22,101 INFO L87 Difference]: Start difference. First operand 1172 states and 1890 transitions. Second operand 4 states. [2018-11-07 00:21:24,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:21:24,014 INFO L93 Difference]: Finished difference Result 4363 states and 7273 transitions. [2018-11-07 00:21:24,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 00:21:24,019 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 224 [2018-11-07 00:21:24,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:21:24,047 INFO L225 Difference]: With dead ends: 4363 [2018-11-07 00:21:24,047 INFO L226 Difference]: Without dead ends: 3197 [2018-11-07 00:21:24,064 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:21:24,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3197 states. [2018-11-07 00:21:24,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3197 to 3197. [2018-11-07 00:21:24,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3197 states. [2018-11-07 00:21:24,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3197 states to 3197 states and 4831 transitions. [2018-11-07 00:21:24,169 INFO L78 Accepts]: Start accepts. Automaton has 3197 states and 4831 transitions. Word has length 224 [2018-11-07 00:21:24,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:21:24,170 INFO L480 AbstractCegarLoop]: Abstraction has 3197 states and 4831 transitions. [2018-11-07 00:21:24,170 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 00:21:24,170 INFO L276 IsEmpty]: Start isEmpty. Operand 3197 states and 4831 transitions. [2018-11-07 00:21:24,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-11-07 00:21:24,180 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:21:24,181 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:21:24,181 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:21:24,181 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:21:24,181 INFO L82 PathProgramCache]: Analyzing trace with hash 938793631, now seen corresponding path program 1 times [2018-11-07 00:21:24,182 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:21:24,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:21:24,183 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:21:24,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:21:24,183 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:21:24,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:21:24,680 WARN L179 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2018-11-07 00:21:25,054 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 34 proven. 101 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 00:21:25,055 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:21:25,055 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:21:25,057 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 244 with the following transitions: [2018-11-07 00:21:25,059 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [93], [95], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [638], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 00:21:25,139 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:21:25,140 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:21:27,837 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:21:30,571 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:21:30,573 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 00:21:30,620 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:21:30,620 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:21:33,681 INFO L227 lantSequenceWeakener]: Weakened 235 states. On average, predicates are now at 77.47% of their original sizes. [2018-11-07 00:21:33,682 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:21:34,130 INFO L415 sIntCurrentIteration]: We unified 242 AI predicates to 242 [2018-11-07 00:21:34,130 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:21:34,131 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:21:34,131 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2018-11-07 00:21:34,131 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:21:34,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 00:21:34,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 00:21:34,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 00:21:34,133 INFO L87 Difference]: Start difference. First operand 3197 states and 4831 transitions. Second operand 7 states. [2018-11-07 00:22:01,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:22:01,124 INFO L93 Difference]: Finished difference Result 6573 states and 9934 transitions. [2018-11-07 00:22:01,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:22:01,124 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 243 [2018-11-07 00:22:01,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:22:01,148 INFO L225 Difference]: With dead ends: 6573 [2018-11-07 00:22:01,148 INFO L226 Difference]: Without dead ends: 3382 [2018-11-07 00:22:01,167 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 243 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:22:01,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3382 states. [2018-11-07 00:22:01,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3382 to 3380. [2018-11-07 00:22:01,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3380 states. [2018-11-07 00:22:01,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3380 states to 3380 states and 5022 transitions. [2018-11-07 00:22:01,265 INFO L78 Accepts]: Start accepts. Automaton has 3380 states and 5022 transitions. Word has length 243 [2018-11-07 00:22:01,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:22:01,266 INFO L480 AbstractCegarLoop]: Abstraction has 3380 states and 5022 transitions. [2018-11-07 00:22:01,266 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 00:22:01,266 INFO L276 IsEmpty]: Start isEmpty. Operand 3380 states and 5022 transitions. [2018-11-07 00:22:01,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-11-07 00:22:01,277 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:22:01,278 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:22:01,278 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:22:01,278 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:22:01,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1617683216, now seen corresponding path program 1 times [2018-11-07 00:22:01,279 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:22:01,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:22:01,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:22:01,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:22:01,280 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:22:01,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:22:01,833 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 00:22:02,053 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 00:22:02,811 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 139 proven. 183 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 00:22:02,811 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:22:02,811 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:22:02,812 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 329 with the following transitions: [2018-11-07 00:22:02,812 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [93], [95], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [638], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 00:22:02,818 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:22:02,819 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:22:05,032 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:22:09,652 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:22:09,652 INFO L272 AbstractInterpreter]: Visited 122 different actions 237 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 00:22:09,660 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:22:09,660 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:22:12,379 INFO L227 lantSequenceWeakener]: Weakened 134 states. On average, predicates are now at 77.93% of their original sizes. [2018-11-07 00:22:12,379 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:22:47,603 INFO L415 sIntCurrentIteration]: We unified 327 AI predicates to 327 [2018-11-07 00:22:47,604 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:22:47,604 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:22:47,604 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [12] total 34 [2018-11-07 00:22:47,604 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:22:47,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-07 00:22:47,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-07 00:22:47,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2018-11-07 00:22:47,606 INFO L87 Difference]: Start difference. First operand 3380 states and 5022 transitions. Second operand 24 states. Received shutdown request... [2018-11-07 00:25:02,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-07 00:25:02,102 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 00:25:02,107 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 00:25:02,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:25:02 BoogieIcfgContainer [2018-11-07 00:25:02,107 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 00:25:02,108 INFO L168 Benchmark]: Toolchain (without parser) took 234837.67 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 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-11-07 00:25:02,109 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 00:25:02,110 INFO L168 Benchmark]: CACSL2BoogieTranslator took 869.46 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-07 00:25:02,111 INFO L168 Benchmark]: Boogie Procedure Inliner took 163.03 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 727.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -824.3 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. [2018-11-07 00:25:02,112 INFO L168 Benchmark]: Boogie Preprocessor took 112.02 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 00:25:02,112 INFO L168 Benchmark]: RCFGBuilder took 3447.74 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: 120.5 MB). Peak memory consumption was 120.5 MB. Max. memory is 7.1 GB. [2018-11-07 00:25:02,113 INFO L168 Benchmark]: TraceAbstraction took 230239.12 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 2.8 GB in the end (delta: -760.5 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-11-07 00:25:02,118 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 869.46 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 163.03 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 727.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -824.3 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.02 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 3447.74 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: 120.5 MB). Peak memory consumption was 120.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 230239.12 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 2.8 GB in the end (delta: -760.5 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 55]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 55). Cancelled while BasicCegarLoop was constructing difference of abstraction (3380states) and FLOYD_HOARE automaton (currently 21 states, 24 states before enhancement),while ReachableStatesComputation was computing reachable states (2582 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 230.1s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 172.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 849 SDtfs, 4196 SDslu, 913 SDs, 0 SdLazy, 7656 SolverSat, 1644 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 73.7s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 610 GetRequests, 513 SyntacticMatches, 43 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 40.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3380occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 12.4s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9957050253432157 AbsIntWeakeningRatio, 0.10193321616871705 AbsIntAvgWeakeningVarsNumRemoved, 621.5342706502636 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 1050 NumberOfCodeBlocks, 1050 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1044 ConstructedInterpolants, 0 QuantifiedInterpolants, 2181295 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 338/622 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown