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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label22_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 23:54:03,097 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 23:54:03,106 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 23:54:03,121 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 23:54:03,121 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 23:54:03,123 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 23:54:03,124 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 23:54:03,128 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 23:54:03,130 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 23:54:03,131 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 23:54:03,132 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 23:54:03,132 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 23:54:03,133 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 23:54:03,134 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 23:54:03,135 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 23:54:03,136 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 23:54:03,137 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 23:54:03,139 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 23:54:03,141 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 23:54:03,146 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 23:54:03,147 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 23:54:03,148 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 23:54:03,153 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 23:54:03,169 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-24 23:54:03,188 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 23:54:03,189 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 23:54:03,189 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 23:54:03,190 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 23:54:03,194 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 23:54:03,194 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 23:54:03,194 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-24 23:54:03,195 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 23:54:03,195 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-24 23:54:03,195 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 23:54:03,195 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 23:54:03,195 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 23:54:03,196 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 23:54:03,196 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 23:54:03,197 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 23:54:03,197 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 23:54:03,197 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 23:54:03,197 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 23:54:03,197 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 23:54:03,198 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 23:54:03,199 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 23:54:03,199 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 23:54:03,199 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 23:54:03,200 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 23:54:03,200 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 23:54:03,200 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 23:54:03,200 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 23:54:03,200 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 23:54:03,201 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 23:54:03,201 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 23:54:03,201 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 23:54:03,201 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 23:54:03,201 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 23:54:03,202 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 23:54:03,202 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 23:54:03,202 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 23:54:03,281 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 23:54:03,298 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 23:54:03,302 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 23:54:03,304 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 23:54:03,305 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 23:54:03,306 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label22_false-unreach-call.c [2018-10-24 23:54:03,370 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/16edb964d/a2e1b93d62524440ab4d915f69b62a3c/FLAGe6268b177 [2018-10-24 23:54:04,351 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 23:54:04,353 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label22_false-unreach-call.c [2018-10-24 23:54:04,404 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/16edb964d/a2e1b93d62524440ab4d915f69b62a3c/FLAGe6268b177 [2018-10-24 23:54:04,422 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/16edb964d/a2e1b93d62524440ab4d915f69b62a3c [2018-10-24 23:54:04,438 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 23:54:04,440 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 23:54:04,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 23:54:04,443 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 23:54:04,447 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 23:54:04,448 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:54:04" (1/1) ... [2018-10-24 23:54:04,451 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8de4687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:04, skipping insertion in model container [2018-10-24 23:54:04,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:54:04" (1/1) ... [2018-10-24 23:54:04,462 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 23:54:04,702 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 23:54:06,650 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 23:54:06,655 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 23:54:07,705 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 23:54:07,769 INFO L193 MainTranslator]: Completed translation [2018-10-24 23:54:07,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:07 WrapperNode [2018-10-24 23:54:07,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 23:54:07,771 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 23:54:07,771 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 23:54:07,771 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 23:54:07,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:07" (1/1) ... [2018-10-24 23:54:07,885 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:07" (1/1) ... [2018-10-24 23:54:08,547 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 23:54:08,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 23:54:08,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 23:54:08,548 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 23:54:08,560 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:07" (1/1) ... [2018-10-24 23:54:08,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:07" (1/1) ... [2018-10-24 23:54:08,613 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:07" (1/1) ... [2018-10-24 23:54:08,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:07" (1/1) ... [2018-10-24 23:54:08,837 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:07" (1/1) ... [2018-10-24 23:54:08,892 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:07" (1/1) ... [2018-10-24 23:54:09,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:07" (1/1) ... [2018-10-24 23:54:09,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 23:54:09,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 23:54:09,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 23:54:09,156 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 23:54:09,158 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:07" (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 23:54:09,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 23:54:09,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 23:54:09,234 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-10-24 23:54:09,234 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-10-24 23:54:09,234 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-10-24 23:54:09,234 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-10-24 23:54:09,235 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 23:54:09,235 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 23:54:09,235 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 23:54:09,235 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 23:54:09,235 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 23:54:09,236 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 23:54:09,236 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 23:54:09,237 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 23:54:09,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 23:54:09,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 23:54:09,237 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 23:54:09,238 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 23:54:27,276 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 23:54:27,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:54:27 BoogieIcfgContainer [2018-10-24 23:54:27,277 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 23:54:27,278 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 23:54:27,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 23:54:27,282 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 23:54:27,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:54:04" (1/3) ... [2018-10-24 23:54:27,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d98ae1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:54:27, skipping insertion in model container [2018-10-24 23:54:27,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:54:07" (2/3) ... [2018-10-24 23:54:27,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d98ae1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:54:27, skipping insertion in model container [2018-10-24 23:54:27,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:54:27" (3/3) ... [2018-10-24 23:54:27,285 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label22_false-unreach-call.c [2018-10-24 23:54:27,295 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 23:54:27,305 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 23:54:27,323 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 23:54:27,374 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 23:54:27,374 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 23:54:27,374 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 23:54:27,374 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 23:54:27,374 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 23:54:27,375 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 23:54:27,375 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 23:54:27,375 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 23:54:27,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-10-24 23:54:27,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-24 23:54:27,434 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:54:27,436 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] [2018-10-24 23:54:27,438 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:54:27,444 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:54:27,444 INFO L82 PathProgramCache]: Analyzing trace with hash 655645660, now seen corresponding path program 1 times [2018-10-24 23:54:27,447 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:54:27,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:54:27,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:54:27,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:54:27,505 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:54:27,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:54:27,884 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 23:54:28,011 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 23:54:28,014 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:54:28,014 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 23:54:28,014 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:54:28,021 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 23:54:28,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 23:54:28,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 23:54:28,042 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-10-24 23:54:44,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:54:44,117 INFO L93 Difference]: Finished difference Result 5034 states and 9499 transitions. [2018-10-24 23:54:44,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 23:54:44,124 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2018-10-24 23:54:44,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:54:44,168 INFO L225 Difference]: With dead ends: 5034 [2018-10-24 23:54:44,168 INFO L226 Difference]: Without dead ends: 3254 [2018-10-24 23:54:44,179 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 23:54:44,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3254 states. [2018-10-24 23:54:44,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3254 to 3207. [2018-10-24 23:54:44,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3207 states. [2018-10-24 23:54:44,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3207 states to 3207 states and 5994 transitions. [2018-10-24 23:54:44,403 INFO L78 Accepts]: Start accepts. Automaton has 3207 states and 5994 transitions. Word has length 36 [2018-10-24 23:54:44,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:54:44,404 INFO L481 AbstractCegarLoop]: Abstraction has 3207 states and 5994 transitions. [2018-10-24 23:54:44,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 23:54:44,404 INFO L276 IsEmpty]: Start isEmpty. Operand 3207 states and 5994 transitions. [2018-10-24 23:54:44,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-10-24 23:54:44,411 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:54:44,411 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:54:44,412 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:54:44,412 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:54:44,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1545584319, now seen corresponding path program 1 times [2018-10-24 23:54:44,412 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:54:44,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:54:44,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:54:44,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:54:44,414 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:54:44,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:54:44,843 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:54:44,844 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:54:44,844 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 23:54:44,844 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:54:44,847 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:54:44,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:54:44,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 23:54:44,848 INFO L87 Difference]: Start difference. First operand 3207 states and 5994 transitions. Second operand 6 states. [2018-10-24 23:55:12,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:55:12,495 INFO L93 Difference]: Finished difference Result 9590 states and 17980 transitions. [2018-10-24 23:55:12,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 23:55:12,495 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 109 [2018-10-24 23:55:12,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:55:12,531 INFO L225 Difference]: With dead ends: 9590 [2018-10-24 23:55:12,531 INFO L226 Difference]: Without dead ends: 6389 [2018-10-24 23:55:12,542 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-24 23:55:12,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6389 states. [2018-10-24 23:55:12,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6389 to 6281. [2018-10-24 23:55:12,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6281 states. [2018-10-24 23:55:12,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6281 states to 6281 states and 11310 transitions. [2018-10-24 23:55:12,713 INFO L78 Accepts]: Start accepts. Automaton has 6281 states and 11310 transitions. Word has length 109 [2018-10-24 23:55:12,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:55:12,714 INFO L481 AbstractCegarLoop]: Abstraction has 6281 states and 11310 transitions. [2018-10-24 23:55:12,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 23:55:12,714 INFO L276 IsEmpty]: Start isEmpty. Operand 6281 states and 11310 transitions. [2018-10-24 23:55:12,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-24 23:55:12,718 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:55:12,718 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:55:12,719 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:55:12,719 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:55:12,719 INFO L82 PathProgramCache]: Analyzing trace with hash 205222398, now seen corresponding path program 1 times [2018-10-24 23:55:12,719 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:55:12,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:55:12,721 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:55:12,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:55:12,721 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:55:12,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:55:12,946 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:55:12,947 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:55:12,947 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 23:55:12,947 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:55:12,948 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 23:55:12,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 23:55:12,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 23:55:12,949 INFO L87 Difference]: Start difference. First operand 6281 states and 11310 transitions. Second operand 5 states. [2018-10-24 23:55:44,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:55:44,319 INFO L93 Difference]: Finished difference Result 18967 states and 34376 transitions. [2018-10-24 23:55:44,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 23:55:44,320 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2018-10-24 23:55:44,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:55:44,374 INFO L225 Difference]: With dead ends: 18967 [2018-10-24 23:55:44,374 INFO L226 Difference]: Without dead ends: 12692 [2018-10-24 23:55:44,393 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 23:55:44,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12692 states. [2018-10-24 23:55:44,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12692 to 12416. [2018-10-24 23:55:44,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12416 states. [2018-10-24 23:55:44,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12416 states to 12416 states and 18931 transitions. [2018-10-24 23:55:44,734 INFO L78 Accepts]: Start accepts. Automaton has 12416 states and 18931 transitions. Word has length 123 [2018-10-24 23:55:44,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:55:44,735 INFO L481 AbstractCegarLoop]: Abstraction has 12416 states and 18931 transitions. [2018-10-24 23:55:44,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 23:55:44,737 INFO L276 IsEmpty]: Start isEmpty. Operand 12416 states and 18931 transitions. [2018-10-24 23:55:44,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-10-24 23:55:44,745 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:55:44,746 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 23:55:44,746 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:55:44,746 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:55:44,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1515004663, now seen corresponding path program 1 times [2018-10-24 23:55:44,747 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:55:44,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:55:44,748 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:55:44,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:55:44,748 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:55:44,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:55:45,152 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 58 proven. 82 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 23:55:45,152 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:55:45,152 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:55:45,153 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 214 with the following transitions: [2018-10-24 23:55:45,155 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5414], [5416], [5419], [5427], [5435], [5443], [5451], [5459], [5467], [5475], [5483], [5491], [5499], [5507], [5515], [5523], [5531], [5539], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5822], [5823], [5827], [5838], [5841], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-10-24 23:55:45,204 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:55:45,205 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:55:45,738 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 23:55:45,740 INFO L272 AbstractInterpreter]: Visited 95 different actions 95 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 23:55:45,783 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:55:45,783 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 23:55:46,394 INFO L232 lantSequenceWeakener]: Weakened 204 states. On average, predicates are now at 75.33% of their original sizes. [2018-10-24 23:55:46,394 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 23:55:46,633 INFO L413 sIntCurrentIteration]: We have 212 unified AI predicates [2018-10-24 23:55:46,634 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 23:55:46,635 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 23:55:46,635 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-24 23:55:46,635 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:55:46,636 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:55:46,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:55:46,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 23:55:46,636 INFO L87 Difference]: Start difference. First operand 12416 states and 18931 transitions. Second operand 6 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown