java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label28_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 22:19:25,170 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 22:19:25,172 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 22:19:25,189 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 22:19:25,189 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 22:19:25,190 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 22:19:25,192 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 22:19:25,195 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 22:19:25,197 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 22:19:25,199 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 22:19:25,200 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 22:19:25,201 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 22:19:25,204 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 22:19:25,205 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 22:19:25,206 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 22:19:25,207 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 22:19:25,210 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 22:19:25,219 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 22:19:25,224 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 22:19:25,226 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 22:19:25,229 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 22:19:25,230 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 22:19:25,234 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 22:19:25,247 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 22:19:25,247 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 22:19:25,248 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 22:19:25,248 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 22:19:25,249 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 22:19:25,276 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 22:19:25,276 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 22:19:25,277 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 22:19:25,277 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 22:19:25,278 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 22:19:25,278 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 22:19:25,278 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 22:19:25,278 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 22:19:25,278 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 22:19:25,279 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 22:19:25,279 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 22:19:25,279 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 22:19:25,280 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 22:19:25,280 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 22:19:25,280 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 22:19:25,280 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 22:19:25,280 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 22:19:25,281 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 22:19:25,281 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 22:19:25,281 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 22:19:25,281 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 22:19:25,281 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 22:19:25,282 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 22:19:25,282 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 22:19:25,282 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:19:25,282 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 22:19:25,282 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 22:19:25,283 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 22:19:25,283 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 22:19:25,283 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 22:19:25,283 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 22:19:25,283 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 22:19:25,283 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 22:19:25,284 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 22:19:25,336 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 22:19:25,352 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 22:19:25,356 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 22:19:25,358 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 22:19:25,358 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 22:19:25,359 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label28_true-unreach-call.c [2018-10-24 22:19:25,428 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e603c2ae3/57cfc7b62f6f40089db677e294a174eb/FLAGcb26bb033 [2018-10-24 22:19:26,166 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 22:19:26,167 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label28_true-unreach-call.c [2018-10-24 22:19:26,195 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e603c2ae3/57cfc7b62f6f40089db677e294a174eb/FLAGcb26bb033 [2018-10-24 22:19:26,217 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e603c2ae3/57cfc7b62f6f40089db677e294a174eb [2018-10-24 22:19:26,231 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 22:19:26,233 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 22:19:26,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 22:19:26,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 22:19:26,242 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 22:19:26,243 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:19:26" (1/1) ... [2018-10-24 22:19:26,248 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ba4e0b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:26, skipping insertion in model container [2018-10-24 22:19:26,248 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:19:26" (1/1) ... [2018-10-24 22:19:26,260 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 22:19:26,383 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 22:19:27,530 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:19:27,535 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 22:19:28,048 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:19:28,080 INFO L193 MainTranslator]: Completed translation [2018-10-24 22:19:28,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:28 WrapperNode [2018-10-24 22:19:28,081 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 22:19:28,082 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 22:19:28,083 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 22:19:28,083 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 22:19:28,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:28" (1/1) ... [2018-10-24 22:19:28,148 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:28" (1/1) ... [2018-10-24 22:19:28,475 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 22:19:28,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 22:19:28,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 22:19:28,476 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 22:19:28,488 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:28" (1/1) ... [2018-10-24 22:19:28,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:28" (1/1) ... [2018-10-24 22:19:28,508 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:28" (1/1) ... [2018-10-24 22:19:28,508 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:28" (1/1) ... [2018-10-24 22:19:28,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:28" (1/1) ... [2018-10-24 22:19:28,645 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:28" (1/1) ... [2018-10-24 22:19:28,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:28" (1/1) ... [2018-10-24 22:19:28,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 22:19:28,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 22:19:28,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 22:19:28,694 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 22:19:28,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:19:28,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 22:19:28,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 22:19:28,769 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 22:19:28,769 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 22:19:28,769 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 22:19:28,769 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 22:19:28,770 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 22:19:28,770 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 22:19:28,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 22:19:28,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 22:19:28,770 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 22:19:28,771 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 22:19:37,978 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 22:19:37,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:19:37 BoogieIcfgContainer [2018-10-24 22:19:37,979 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 22:19:37,980 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 22:19:37,980 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 22:19:37,984 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 22:19:37,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:19:26" (1/3) ... [2018-10-24 22:19:37,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cb2f755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:19:37, skipping insertion in model container [2018-10-24 22:19:37,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:19:28" (2/3) ... [2018-10-24 22:19:37,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cb2f755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:19:37, skipping insertion in model container [2018-10-24 22:19:37,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:19:37" (3/3) ... [2018-10-24 22:19:37,987 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label28_true-unreach-call.c [2018-10-24 22:19:37,997 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 22:19:38,006 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 22:19:38,023 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 22:19:38,067 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 22:19:38,067 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 22:19:38,067 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 22:19:38,067 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 22:19:38,068 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 22:19:38,068 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 22:19:38,068 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 22:19:38,068 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 22:19:38,107 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-24 22:19:38,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-10-24 22:19:38,118 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:19:38,119 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:19:38,122 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:19:38,128 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:19:38,128 INFO L82 PathProgramCache]: Analyzing trace with hash -2076114681, now seen corresponding path program 1 times [2018-10-24 22:19:38,130 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:19:38,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:19:38,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:19:38,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:19:38,185 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:19:38,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:19:38,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:19:38,723 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:19:38,724 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:19:38,724 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:19:38,731 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:19:38,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:19:38,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:19:38,754 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 4 states. [2018-10-24 22:19:50,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:19:50,125 INFO L93 Difference]: Finished difference Result 2974 states and 5747 transitions. [2018-10-24 22:19:50,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:19:50,127 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2018-10-24 22:19:50,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:19:50,163 INFO L225 Difference]: With dead ends: 2974 [2018-10-24 22:19:50,163 INFO L226 Difference]: Without dead ends: 2193 [2018-10-24 22:19:50,173 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:19:50,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2018-10-24 22:19:50,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 1474. [2018-10-24 22:19:50,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-24 22:19:50,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2384 transitions. [2018-10-24 22:19:50,320 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2384 transitions. Word has length 71 [2018-10-24 22:19:50,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:19:50,322 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2384 transitions. [2018-10-24 22:19:50,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:19:50,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2384 transitions. [2018-10-24 22:19:50,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-24 22:19:50,339 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:19:50,339 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, 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] [2018-10-24 22:19:50,340 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:19:50,340 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:19:50,340 INFO L82 PathProgramCache]: Analyzing trace with hash 865904024, now seen corresponding path program 1 times [2018-10-24 22:19:50,340 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:19:50,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:19:50,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:19:50,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:19:50,343 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:19:50,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:19:50,614 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:19:50,614 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:19:50,614 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 22:19:50,614 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:19:50,617 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 22:19:50,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 22:19:50,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 22:19:50,618 INFO L87 Difference]: Start difference. First operand 1474 states and 2384 transitions. Second operand 5 states. [2018-10-24 22:19:59,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:19:59,945 INFO L93 Difference]: Finished difference Result 4422 states and 7235 transitions. [2018-10-24 22:19:59,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:19:59,948 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2018-10-24 22:19:59,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:19:59,972 INFO L225 Difference]: With dead ends: 4422 [2018-10-24 22:19:59,972 INFO L226 Difference]: Without dead ends: 2954 [2018-10-24 22:19:59,979 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:19:59,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2018-10-24 22:20:00,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2930. [2018-10-24 22:20:00,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2930 states. [2018-10-24 22:20:00,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2930 states to 2930 states and 4516 transitions. [2018-10-24 22:20:00,118 INFO L78 Accepts]: Start accepts. Automaton has 2930 states and 4516 transitions. Word has length 141 [2018-10-24 22:20:00,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:20:00,119 INFO L481 AbstractCegarLoop]: Abstraction has 2930 states and 4516 transitions. [2018-10-24 22:20:00,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 22:20:00,119 INFO L276 IsEmpty]: Start isEmpty. Operand 2930 states and 4516 transitions. [2018-10-24 22:20:00,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-24 22:20:00,125 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:20:00,131 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, 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] [2018-10-24 22:20:00,132 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:20:00,132 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:20:00,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1444523296, now seen corresponding path program 1 times [2018-10-24 22:20:00,132 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:20:00,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:20:00,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:20:00,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:20:00,134 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:20:00,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:20:00,489 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:20:00,490 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:20:00,490 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:20:00,490 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:20:00,491 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:20:00,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:20:00,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:20:00,492 INFO L87 Difference]: Start difference. First operand 2930 states and 4516 transitions. Second operand 6 states. [2018-10-24 22:20:05,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:20:05,771 INFO L93 Difference]: Finished difference Result 7357 states and 11327 transitions. [2018-10-24 22:20:05,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:20:05,772 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2018-10-24 22:20:05,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:20:05,797 INFO L225 Difference]: With dead ends: 7357 [2018-10-24 22:20:05,797 INFO L226 Difference]: Without dead ends: 4433 [2018-10-24 22:20:05,807 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 22:20:05,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4433 states. [2018-10-24 22:20:05,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4433 to 4400. [2018-10-24 22:20:05,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4400 states. [2018-10-24 22:20:05,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4400 states to 4400 states and 5842 transitions. [2018-10-24 22:20:05,931 INFO L78 Accepts]: Start accepts. Automaton has 4400 states and 5842 transitions. Word has length 145 [2018-10-24 22:20:05,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:20:05,931 INFO L481 AbstractCegarLoop]: Abstraction has 4400 states and 5842 transitions. [2018-10-24 22:20:05,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:20:05,931 INFO L276 IsEmpty]: Start isEmpty. Operand 4400 states and 5842 transitions. [2018-10-24 22:20:05,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-24 22:20:05,935 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:20:05,935 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, 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] [2018-10-24 22:20:05,935 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:20:05,936 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:20:05,936 INFO L82 PathProgramCache]: Analyzing trace with hash -797874491, now seen corresponding path program 1 times [2018-10-24 22:20:05,936 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:20:05,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:20:05,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:20:05,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:20:05,937 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:20:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:20:06,157 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:20:06,157 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:20:06,157 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:20:06,158 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:20:06,158 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:20:06,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:20:06,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:20:06,159 INFO L87 Difference]: Start difference. First operand 4400 states and 5842 transitions. Second operand 4 states. [2018-10-24 22:20:12,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:20:12,631 INFO L93 Difference]: Finished difference Result 17356 states and 23632 transitions. [2018-10-24 22:20:12,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:20:12,634 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 178 [2018-10-24 22:20:12,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:20:12,692 INFO L225 Difference]: With dead ends: 17356 [2018-10-24 22:20:12,692 INFO L226 Difference]: Without dead ends: 12962 [2018-10-24 22:20:12,721 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:20:12,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12962 states. [2018-10-24 22:20:13,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12962 to 12962. [2018-10-24 22:20:13,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12962 states. [2018-10-24 22:20:13,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12962 states to 12962 states and 16372 transitions. [2018-10-24 22:20:13,053 INFO L78 Accepts]: Start accepts. Automaton has 12962 states and 16372 transitions. Word has length 178 [2018-10-24 22:20:13,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:20:13,053 INFO L481 AbstractCegarLoop]: Abstraction has 12962 states and 16372 transitions. [2018-10-24 22:20:13,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:20:13,054 INFO L276 IsEmpty]: Start isEmpty. Operand 12962 states and 16372 transitions. [2018-10-24 22:20:13,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2018-10-24 22:20:13,061 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:20:13,062 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:20:13,062 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:20:13,062 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:20:13,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1768524495, now seen corresponding path program 1 times [2018-10-24 22:20:13,062 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:20:13,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:20:13,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:20:13,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:20:13,064 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:20:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:20:13,704 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:20:13,704 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:20:13,705 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:20:13,706 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 290 with the following transitions: [2018-10-24 22:20:13,709 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2055], [2063], [2071], [2079], [2087], [2091], [2093], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2216], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2328], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 22:20:13,813 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:20:13,813 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:20:16,899 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:20:16,900 INFO L272 AbstractInterpreter]: Visited 128 different actions 128 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 22:20:16,912 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:20:16,912 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:20:19,427 INFO L232 lantSequenceWeakener]: Weakened 281 states. On average, predicates are now at 78.2% of their original sizes. [2018-10-24 22:20:19,427 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:20:19,774 INFO L413 sIntCurrentIteration]: We have 288 unified AI predicates [2018-10-24 22:20:19,774 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:20:19,775 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:20:19,776 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 22:20:19,776 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:20:19,777 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 22:20:19,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 22:20:19,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 22:20:19,777 INFO L87 Difference]: Start difference. First operand 12962 states and 16372 transitions. Second operand 7 states. [2018-10-24 22:20:22,439 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:22:07,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:22:07,963 INFO L93 Difference]: Finished difference Result 26623 states and 33475 transitions. [2018-10-24 22:22:07,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:22:07,964 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 289 [2018-10-24 22:22:07,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:22:08,010 INFO L225 Difference]: With dead ends: 26623 [2018-10-24 22:22:08,011 INFO L226 Difference]: Without dead ends: 13667 [2018-10-24 22:22:08,042 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 289 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:22:08,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13667 states. [2018-10-24 22:22:08,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13667 to 13665. [2018-10-24 22:22:08,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13665 states. [2018-10-24 22:22:08,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13665 states to 13665 states and 17087 transitions. [2018-10-24 22:22:08,271 INFO L78 Accepts]: Start accepts. Automaton has 13665 states and 17087 transitions. Word has length 289 [2018-10-24 22:22:08,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:22:08,271 INFO L481 AbstractCegarLoop]: Abstraction has 13665 states and 17087 transitions. [2018-10-24 22:22:08,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 22:22:08,271 INFO L276 IsEmpty]: Start isEmpty. Operand 13665 states and 17087 transitions. [2018-10-24 22:22:08,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2018-10-24 22:22:08,286 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:22:08,286 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, 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, 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] [2018-10-24 22:22:08,287 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:22:08,287 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:22:08,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1575146157, now seen corresponding path program 1 times [2018-10-24 22:22:08,287 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:22:08,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:22:08,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:22:08,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:22:08,289 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:22:08,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:22:08,844 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 22:22:09,062 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 22:22:09,289 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 22:22:09,892 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 251 proven. 249 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 22:22:09,893 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:22:09,893 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:22:09,893 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 477 with the following transitions: [2018-10-24 22:22:09,894 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2055], [2063], [2071], [2079], [2087], [2091], [2093], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2216], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2328], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 22:22:09,904 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:22:09,904 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:22:21,120 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:22:21,120 INFO L272 AbstractInterpreter]: Visited 196 different actions 386 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 22:22:21,126 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:22:21,126 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:22:25,062 INFO L232 lantSequenceWeakener]: Weakened 202 states. On average, predicates are now at 78.4% of their original sizes. [2018-10-24 22:22:25,062 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:22:51,453 INFO L413 sIntCurrentIteration]: We have 475 unified AI predicates [2018-10-24 22:22:51,453 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:22:51,454 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:22:51,454 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2018-10-24 22:22:51,454 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:22:51,455 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-24 22:22:51,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-24 22:22:51,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2018-10-24 22:22:51,456 INFO L87 Difference]: Start difference. First operand 13665 states and 17087 transitions. Second operand 16 states. Received shutdown request... [2018-10-24 22:23:06,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 22:23:06,680 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:23:06,685 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:23:06,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:23:06 BoogieIcfgContainer [2018-10-24 22:23:06,686 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:23:06,686 INFO L168 Benchmark]: Toolchain (without parser) took 220454.70 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 849.2 MB. Max. memory is 7.1 GB. [2018-10-24 22:23:06,688 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 22:23:06,688 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1846.58 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-24 22:23:06,689 INFO L168 Benchmark]: Boogie Procedure Inliner took 392.50 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 786.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -964.8 MB). Peak memory consumption was 55.6 MB. Max. memory is 7.1 GB. [2018-10-24 22:23:06,690 INFO L168 Benchmark]: Boogie Preprocessor took 217.70 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-10-24 22:23:06,691 INFO L168 Benchmark]: RCFGBuilder took 9286.03 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 505.4 MB). Peak memory consumption was 505.4 MB. Max. memory is 7.1 GB. [2018-10-24 22:23:06,692 INFO L168 Benchmark]: TraceAbstraction took 208705.64 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 3.2 GB in the end (delta: -1.5 GB). Peak memory consumption was 360.4 MB. Max. memory is 7.1 GB. [2018-10-24 22:23:06,701 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 1846.58 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 392.50 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 786.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -964.8 MB). Peak memory consumption was 55.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 217.70 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9286.03 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 505.4 MB). Peak memory consumption was 505.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208705.64 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 3.2 GB in the end (delta: -1.5 GB). Peak memory consumption was 360.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 201]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 201). Cancelled while BasicCegarLoop was constructing difference of abstraction (13665states) and FLOYD_HOARE automaton (currently 9 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (119 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 208.6s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 156.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2019 SDtfs, 9605 SDslu, 903 SDs, 0 SdLazy, 19017 SolverSat, 5072 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 102.2s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 798 GetRequests, 703 SyntacticMatches, 54 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 27.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13665occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 14.4s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.996797063460406 AbsIntWeakeningRatio, 0.07601572739187418 AbsIntAvgWeakeningVarsNumRemoved, 750.8768020969856 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 5 MinimizatonAttempts, 778 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 1300 NumberOfCodeBlocks, 1300 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1294 ConstructedInterpolants, 0 QuantifiedInterpolants, 2219973 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 669/920 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown