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/Problem12_label34_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 22:13:58,132 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 22:13:58,135 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 22:13:58,152 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 22:13:58,153 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 22:13:58,154 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 22:13:58,155 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 22:13:58,157 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 22:13:58,159 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 22:13:58,159 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 22:13:58,160 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 22:13:58,161 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 22:13:58,162 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 22:13:58,163 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 22:13:58,164 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 22:13:58,164 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 22:13:58,165 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 22:13:58,167 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 22:13:58,170 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 22:13:58,173 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 22:13:58,175 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 22:13:58,179 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 22:13:58,183 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 22:13:58,196 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-23 22:13:58,225 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 22:13:58,225 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 22:13:58,227 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 22:13:58,227 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 22:13:58,227 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 22:13:58,228 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 22:13:58,228 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 22:13:58,228 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 22:13:58,228 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 22:13:58,228 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 22:13:58,229 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 22:13:58,229 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 22:13:58,230 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 22:13:58,230 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 22:13:58,230 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 22:13:58,230 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 22:13:58,231 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 22:13:58,231 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 22:13:58,231 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 22:13:58,232 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 22:13:58,232 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 22:13:58,233 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 22:13:58,233 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 22:13:58,233 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 22:13:58,233 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 22:13:58,233 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 22:13:58,234 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 22:13:58,234 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 22:13:58,234 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 22:13:58,235 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 22:13:58,235 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 22:13:58,235 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 22:13:58,235 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 22:13:58,235 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 22:13:58,299 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 22:13:58,317 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 22:13:58,321 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 22:13:58,323 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 22:13:58,323 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 22:13:58,324 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label34_false-unreach-call.c [2018-10-23 22:13:58,389 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ac01463fc/d9a4b817f1644542808636d9a1249e5c/FLAGb9784cd75 [2018-10-23 22:13:59,135 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 22:13:59,136 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label34_false-unreach-call.c [2018-10-23 22:13:59,171 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ac01463fc/d9a4b817f1644542808636d9a1249e5c/FLAGb9784cd75 [2018-10-23 22:13:59,193 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ac01463fc/d9a4b817f1644542808636d9a1249e5c [2018-10-23 22:13:59,206 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 22:13:59,208 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 22:13:59,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 22:13:59,210 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 22:13:59,216 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 22:13:59,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:13:59" (1/1) ... [2018-10-23 22:13:59,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@191d3d25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:59, skipping insertion in model container [2018-10-23 22:13:59,220 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:13:59" (1/1) ... [2018-10-23 22:13:59,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 22:13:59,411 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 22:14:00,795 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:14:00,800 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 22:14:01,420 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:14:01,456 INFO L193 MainTranslator]: Completed translation [2018-10-23 22:14:01,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:14:01 WrapperNode [2018-10-23 22:14:01,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 22:14:01,458 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 22:14:01,458 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 22:14:01,458 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 22:14:01,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:14:01" (1/1) ... [2018-10-23 22:14:01,551 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:14:01" (1/1) ... [2018-10-23 22:14:02,026 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 22:14:02,026 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 22:14:02,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 22:14:02,027 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 22:14:02,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:14:01" (1/1) ... [2018-10-23 22:14:02,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:14:01" (1/1) ... [2018-10-23 22:14:02,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:14:01" (1/1) ... [2018-10-23 22:14:02,086 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:14:01" (1/1) ... [2018-10-23 22:14:02,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:14:01" (1/1) ... [2018-10-23 22:14:02,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:14:01" (1/1) ... [2018-10-23 22:14:02,266 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:14:01" (1/1) ... [2018-10-23 22:14:02,302 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 22:14:02,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 22:14:02,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 22:14:02,303 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 22:14:02,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:14:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 22:14:02,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 22:14:02,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 22:14:02,375 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-23 22:14:02,375 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-23 22:14:02,375 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-23 22:14:02,376 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-23 22:14:02,376 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-23 22:14:02,376 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-23 22:14:02,376 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 22:14:02,377 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 22:14:02,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 22:14:02,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 22:14:02,377 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 22:14:02,378 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 22:14:13,322 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 22:14:13,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:14:13 BoogieIcfgContainer [2018-10-23 22:14:13,327 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 22:14:13,328 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 22:14:13,328 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 22:14:13,333 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 22:14:13,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:13:59" (1/3) ... [2018-10-23 22:14:13,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cd9f0a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:14:13, skipping insertion in model container [2018-10-23 22:14:13,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:14:01" (2/3) ... [2018-10-23 22:14:13,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cd9f0a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:14:13, skipping insertion in model container [2018-10-23 22:14:13,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:14:13" (3/3) ... [2018-10-23 22:14:13,339 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label34_false-unreach-call.c [2018-10-23 22:14:13,350 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 22:14:13,368 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 22:14:13,387 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 22:14:13,453 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 22:14:13,454 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 22:14:13,454 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 22:14:13,454 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 22:14:13,454 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 22:14:13,454 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 22:14:13,455 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 22:14:13,455 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 22:14:13,496 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-23 22:14:13,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-23 22:14:13,504 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:14:13,505 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] [2018-10-23 22:14:13,508 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:14:13,515 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:14:13,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1388139973, now seen corresponding path program 1 times [2018-10-23 22:14:13,519 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:14:13,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:14:13,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:14:13,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:14:13,572 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:14:13,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:14:13,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:14:13,984 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:14:13,985 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 22:14:13,985 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:14:13,991 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 22:14:14,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 22:14:14,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:14:14,008 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 4 states. [2018-10-23 22:14:31,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:14:31,019 INFO L93 Difference]: Finished difference Result 3234 states and 6255 transitions. [2018-10-23 22:14:31,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 22:14:31,022 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-10-23 22:14:31,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:14:31,063 INFO L225 Difference]: With dead ends: 3234 [2018-10-23 22:14:31,063 INFO L226 Difference]: Without dead ends: 2388 [2018-10-23 22:14:31,073 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 [2018-10-23 22:14:31,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2018-10-23 22:14:31,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 2388. [2018-10-23 22:14:31,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2388 states. [2018-10-23 22:14:31,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2388 states to 2388 states and 4022 transitions. [2018-10-23 22:14:31,275 INFO L78 Accepts]: Start accepts. Automaton has 2388 states and 4022 transitions. Word has length 23 [2018-10-23 22:14:31,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:14:31,276 INFO L481 AbstractCegarLoop]: Abstraction has 2388 states and 4022 transitions. [2018-10-23 22:14:31,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 22:14:31,276 INFO L276 IsEmpty]: Start isEmpty. Operand 2388 states and 4022 transitions. [2018-10-23 22:14:31,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-23 22:14:31,288 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:14:31,288 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:14:31,289 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:14:31,289 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:14:31,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1150464296, now seen corresponding path program 1 times [2018-10-23 22:14:31,289 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:14:31,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:14:31,291 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:14:31,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:14:31,291 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:14:31,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:14:31,870 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:14:31,871 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:14:31,871 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:14:31,871 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:14:31,873 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:14:31,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:14:31,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:14:31,874 INFO L87 Difference]: Start difference. First operand 2388 states and 4022 transitions. Second operand 6 states. [2018-10-23 22:14:45,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:14:45,640 INFO L93 Difference]: Finished difference Result 9453 states and 16261 transitions. [2018-10-23 22:14:45,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:14:45,643 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2018-10-23 22:14:45,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:14:45,694 INFO L225 Difference]: With dead ends: 9453 [2018-10-23 22:14:45,694 INFO L226 Difference]: Without dead ends: 7071 [2018-10-23 22:14:45,709 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 22:14:45,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7071 states. [2018-10-23 22:14:45,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7071 to 7023. [2018-10-23 22:14:45,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7023 states. [2018-10-23 22:14:45,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7023 states to 7023 states and 10536 transitions. [2018-10-23 22:14:45,914 INFO L78 Accepts]: Start accepts. Automaton has 7023 states and 10536 transitions. Word has length 123 [2018-10-23 22:14:45,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:14:45,914 INFO L481 AbstractCegarLoop]: Abstraction has 7023 states and 10536 transitions. [2018-10-23 22:14:45,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:14:45,915 INFO L276 IsEmpty]: Start isEmpty. Operand 7023 states and 10536 transitions. [2018-10-23 22:14:45,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-10-23 22:14:45,930 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:14:45,930 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:14:45,930 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:14:45,931 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:14:45,931 INFO L82 PathProgramCache]: Analyzing trace with hash -521586516, now seen corresponding path program 1 times [2018-10-23 22:14:45,932 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:14:45,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:14:45,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:14:45,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:14:45,933 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:14:46,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:14:46,232 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:14:46,232 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:14:46,232 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 22:14:46,232 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:14:46,233 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 22:14:46,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 22:14:46,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:14:46,234 INFO L87 Difference]: Start difference. First operand 7023 states and 10536 transitions. Second operand 4 states. [2018-10-23 22:14:56,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:14:56,928 INFO L93 Difference]: Finished difference Result 27807 states and 43318 transitions. [2018-10-23 22:14:56,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 22:14:56,929 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 173 [2018-10-23 22:14:56,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:14:57,054 INFO L225 Difference]: With dead ends: 27807 [2018-10-23 22:14:57,055 INFO L226 Difference]: Without dead ends: 20790 [2018-10-23 22:14:57,097 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 [2018-10-23 22:14:57,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20790 states. [2018-10-23 22:14:57,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20790 to 20790. [2018-10-23 22:14:57,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20790 states. [2018-10-23 22:14:57,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20790 states to 20790 states and 31070 transitions. [2018-10-23 22:14:57,675 INFO L78 Accepts]: Start accepts. Automaton has 20790 states and 31070 transitions. Word has length 173 [2018-10-23 22:14:57,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:14:57,675 INFO L481 AbstractCegarLoop]: Abstraction has 20790 states and 31070 transitions. [2018-10-23 22:14:57,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 22:14:57,676 INFO L276 IsEmpty]: Start isEmpty. Operand 20790 states and 31070 transitions. [2018-10-23 22:14:57,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2018-10-23 22:14:57,709 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:14:57,709 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-23 22:14:57,709 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:14:57,710 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:14:57,710 INFO L82 PathProgramCache]: Analyzing trace with hash 640704029, now seen corresponding path program 1 times [2018-10-23 22:14:57,710 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:14:57,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:14:57,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:14:57,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:14:57,712 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:14:57,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:14:58,095 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2018-10-23 22:14:58,096 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:14:58,096 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 22:14:58,096 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:14:58,097 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 22:14:58,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 22:14:58,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:14:58,099 INFO L87 Difference]: Start difference. First operand 20790 states and 31070 transitions. Second operand 4 states. [2018-10-23 22:15:07,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:15:07,528 INFO L93 Difference]: Finished difference Result 75182 states and 120688 transitions. [2018-10-23 22:15:07,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 22:15:07,529 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 291 [2018-10-23 22:15:07,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:15:07,799 INFO L225 Difference]: With dead ends: 75182 [2018-10-23 22:15:07,799 INFO L226 Difference]: Without dead ends: 54398 [2018-10-23 22:15:07,945 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:15:08,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54398 states. [2018-10-23 22:15:09,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54398 to 54395. [2018-10-23 22:15:09,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54395 states. [2018-10-23 22:15:09,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54395 states to 54395 states and 80117 transitions. [2018-10-23 22:15:09,553 INFO L78 Accepts]: Start accepts. Automaton has 54395 states and 80117 transitions. Word has length 291 [2018-10-23 22:15:09,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:15:09,554 INFO L481 AbstractCegarLoop]: Abstraction has 54395 states and 80117 transitions. [2018-10-23 22:15:09,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 22:15:09,554 INFO L276 IsEmpty]: Start isEmpty. Operand 54395 states and 80117 transitions. [2018-10-23 22:15:09,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-10-23 22:15:09,603 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:15:09,603 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:15:09,604 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:15:09,604 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:15:09,604 INFO L82 PathProgramCache]: Analyzing trace with hash -627152535, now seen corresponding path program 1 times [2018-10-23 22:15:09,604 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:15:09,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:15:09,605 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:15:09,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:15:09,606 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:15:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:15:10,088 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:15:10,089 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:15:10,089 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 22:15:10,089 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:15:10,090 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 22:15:10,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 22:15:10,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-23 22:15:10,091 INFO L87 Difference]: Start difference. First operand 54395 states and 80117 transitions. Second operand 5 states. [2018-10-23 22:15:21,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:15:21,532 INFO L93 Difference]: Finished difference Result 162657 states and 253697 transitions. [2018-10-23 22:15:21,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:15:21,533 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 292 [2018-10-23 22:15:21,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:15:22,147 INFO L225 Difference]: With dead ends: 162657 [2018-10-23 22:15:22,147 INFO L226 Difference]: Without dead ends: 108268 [2018-10-23 22:15:22,312 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-23 22:15:22,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108268 states. [2018-10-23 22:15:25,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108268 to 107287. [2018-10-23 22:15:25,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107287 states. [2018-10-23 22:15:25,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107287 states to 107287 states and 156044 transitions. [2018-10-23 22:15:25,701 INFO L78 Accepts]: Start accepts. Automaton has 107287 states and 156044 transitions. Word has length 292 [2018-10-23 22:15:25,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:15:25,702 INFO L481 AbstractCegarLoop]: Abstraction has 107287 states and 156044 transitions. [2018-10-23 22:15:25,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 22:15:25,702 INFO L276 IsEmpty]: Start isEmpty. Operand 107287 states and 156044 transitions. [2018-10-23 22:15:25,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2018-10-23 22:15:25,804 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:15:25,804 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:15:25,805 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:15:25,805 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:15:25,805 INFO L82 PathProgramCache]: Analyzing trace with hash 123415015, now seen corresponding path program 1 times [2018-10-23 22:15:25,805 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:15:25,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:15:25,806 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:15:25,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:15:25,807 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:15:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:15:26,183 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:15:26,707 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 32 proven. 98 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-23 22:15:26,707 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:15:26,707 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:15:26,709 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 396 with the following transitions: [2018-10-23 22:15:26,711 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1951], [1953], [1956], [1964], [1972], [1980], [1988], [1996], [2004], [2012], [2020], [2028], [2036], [2044], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [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], [2492], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2949], [2953], [2957], [2961], [2965], [2969], [2973], [2977], [2981], [2985], [2989], [2993], [2997], [3001], [3005], [3009], [3013], [3017], [3021], [3025], [3029], [3033], [3037], [3041], [3045], [3049], [3053], [3057], [3061], [3065], [3069], [3073], [3077], [3081], [3085], [3089], [3093], [3097], [3101], [3105], [3109], [3113], [3117], [3121], [3125], [3129], [3133], [3137], [3141], [3145], [3149], [3153], [3156], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-23 22:15:26,802 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:15:26,802 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:15:38,118 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:15:38,119 INFO L272 AbstractInterpreter]: Visited 274 different actions 274 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-23 22:15:38,133 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:15:38,133 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:15:42,185 INFO L232 lantSequenceWeakener]: Weakened 387 states. On average, predicates are now at 75.07% of their original sizes. [2018-10-23 22:15:42,185 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:15:43,061 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:15:43,062 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:15:43,063 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2018-10-23 22:15:43,063 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:15:43,063 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-23 22:15:43,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-23 22:15:43,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-10-23 22:15:43,064 INFO L87 Difference]: Start difference. First operand 107287 states and 156044 transitions. Second operand 9 states. [2018-10-23 22:15:54,322 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-23 22:17:24,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-23 22:17:24,680 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 22:17:24,685 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 22:17:24,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:17:24 BoogieIcfgContainer [2018-10-23 22:17:24,685 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 22:17:24,686 INFO L168 Benchmark]: Toolchain (without parser) took 205479.39 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 925.0 MB. Max. memory is 7.1 GB. [2018-10-23 22:17:24,688 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 22:17:24,688 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2247.77 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 203.5 MB). Peak memory consumption was 203.5 MB. Max. memory is 7.1 GB. [2018-10-23 22:17:24,690 INFO L168 Benchmark]: Boogie Procedure Inliner took 568.62 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 777.5 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 69.0 MB. Max. memory is 7.1 GB. [2018-10-23 22:17:24,691 INFO L168 Benchmark]: Boogie Preprocessor took 276.18 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: 36.9 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. [2018-10-23 22:17:24,692 INFO L168 Benchmark]: RCFGBuilder took 11023.79 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 207.1 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -228.2 MB). Peak memory consumption was 689.2 MB. Max. memory is 7.1 GB. [2018-10-23 22:17:24,693 INFO L168 Benchmark]: TraceAbstraction took 191357.58 ms. Allocated memory was 2.5 GB in the beginning and 4.0 GB in the end (delta: 1.5 GB). Free memory was 2.4 GB in the beginning and 2.9 GB in the end (delta: -514.7 MB). Peak memory consumption was 953.9 MB. Max. memory is 7.1 GB. [2018-10-23 22:17:24,699 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2247.77 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 203.5 MB). Peak memory consumption was 203.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 568.62 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 777.5 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 69.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 276.18 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: 36.9 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11023.79 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 207.1 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -228.2 MB). Peak memory consumption was 689.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 191357.58 ms. Allocated memory was 2.5 GB in the beginning and 4.0 GB in the end (delta: 1.5 GB). Free memory was 2.4 GB in the beginning and 2.9 GB in the end (delta: -514.7 MB). Peak memory consumption was 953.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 60]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 60). Cancelled while BasicCegarLoop was constructing difference of abstraction (107287states) and FLOYD_HOARE automaton (currently 9 states, 9 states before enhancement),while ReachableStatesComputation was computing reachable states (150045 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 191.2s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 165.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2182 SDtfs, 15169 SDslu, 864 SDs, 0 SdLazy, 24228 SolverSat, 8189 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 109.8s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 432 GetRequests, 402 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=107287occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 11.4s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.997540023428348 AbsIntWeakeningRatio, 0.06852791878172589 AbsIntAvgWeakeningVarsNumRemoved, 1067.3147208121827 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 5.9s AutomataMinimizationTime, 5 MinimizatonAttempts, 1032 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 1297 NumberOfCodeBlocks, 1297 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1291 ConstructedInterpolants, 0 QuantifiedInterpolants, 903027 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 235/333 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown