java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label44_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 22:21:51,156 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 22:21:51,158 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 22:21:51,173 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 22:21:51,173 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 22:21:51,175 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 22:21:51,176 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 22:21:51,178 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 22:21:51,180 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 22:21:51,181 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 22:21:51,182 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 22:21:51,182 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 22:21:51,183 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 22:21:51,184 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 22:21:51,185 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 22:21:51,186 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 22:21:51,187 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 22:21:51,189 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 22:21:51,191 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 22:21:51,193 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 22:21:51,194 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 22:21:51,195 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 22:21:51,197 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 22:21:51,204 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 22:21:51,204 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 22:21:51,205 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 22:21:51,206 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 22:21:51,206 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 22:21:51,222 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 22:21:51,222 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 22:21:51,223 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 22:21:51,223 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 22:21:51,224 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 22:21:51,224 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 22:21:51,224 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 22:21:51,224 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 22:21:51,224 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 22:21:51,225 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 22:21:51,225 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 22:21:51,225 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 22:21:51,226 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 22:21:51,226 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 22:21:51,226 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 22:21:51,226 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 22:21:51,226 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 22:21:51,227 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 22:21:51,227 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 22:21:51,227 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 22:21:51,227 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 22:21:51,227 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 22:21:51,228 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 22:21:51,228 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 22:21:51,228 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:21:51,228 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 22:21:51,228 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 22:21:51,229 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 22:21:51,229 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 22:21:51,229 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 22:21:51,229 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 22:21:51,229 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 22:21:51,230 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 22:21:51,230 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 22:21:51,285 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 22:21:51,297 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 22:21:51,301 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 22:21:51,303 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 22:21:51,303 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 22:21:51,304 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label44_true-unreach-call.c [2018-10-24 22:21:51,365 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3d74bd64c/c69c0f4230c74d7f9be937a806d70573/FLAG8e5b4158b [2018-10-24 22:21:52,063 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 22:21:52,064 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label44_true-unreach-call.c [2018-10-24 22:21:52,088 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3d74bd64c/c69c0f4230c74d7f9be937a806d70573/FLAG8e5b4158b [2018-10-24 22:21:52,110 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3d74bd64c/c69c0f4230c74d7f9be937a806d70573 [2018-10-24 22:21:52,122 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 22:21:52,125 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 22:21:52,131 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 22:21:52,131 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 22:21:52,136 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 22:21:52,137 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:21:52" (1/1) ... [2018-10-24 22:21:52,141 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@483c0907 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:21:52, skipping insertion in model container [2018-10-24 22:21:52,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:21:52" (1/1) ... [2018-10-24 22:21:52,153 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 22:21:52,286 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 22:21:53,282 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:21:53,286 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 22:21:53,768 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:21:53,797 INFO L193 MainTranslator]: Completed translation [2018-10-24 22:21:53,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:21:53 WrapperNode [2018-10-24 22:21:53,798 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 22:21:53,799 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 22:21:53,799 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 22:21:53,800 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 22:21:53,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:21:53" (1/1) ... [2018-10-24 22:21:53,859 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:21:53" (1/1) ... [2018-10-24 22:21:54,187 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 22:21:54,188 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 22:21:54,188 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 22:21:54,188 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 22:21:54,200 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:21:53" (1/1) ... [2018-10-24 22:21:54,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:21:53" (1/1) ... [2018-10-24 22:21:54,218 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:21:53" (1/1) ... [2018-10-24 22:21:54,218 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:21:53" (1/1) ... [2018-10-24 22:21:54,319 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:21:53" (1/1) ... [2018-10-24 22:21:54,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:21:53" (1/1) ... [2018-10-24 22:21:54,399 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:21:53" (1/1) ... [2018-10-24 22:21:54,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 22:21:54,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 22:21:54,439 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 22:21:54,439 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 22:21:54,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:21:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:21:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 22:21:54,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 22:21:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 22:21:54,519 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 22:21:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 22:21:54,519 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 22:21:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 22:21:54,520 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 22:21:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 22:21:54,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 22:21:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 22:21:54,520 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 22:22:03,157 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 22:22:03,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:22:03 BoogieIcfgContainer [2018-10-24 22:22:03,160 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 22:22:03,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 22:22:03,162 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 22:22:03,165 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 22:22:03,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:21:52" (1/3) ... [2018-10-24 22:22:03,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@300862c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:22:03, skipping insertion in model container [2018-10-24 22:22:03,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:21:53" (2/3) ... [2018-10-24 22:22:03,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@300862c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:22:03, skipping insertion in model container [2018-10-24 22:22:03,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:22:03" (3/3) ... [2018-10-24 22:22:03,169 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label44_true-unreach-call.c [2018-10-24 22:22:03,180 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 22:22:03,192 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 22:22:03,213 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 22:22:03,261 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 22:22:03,262 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 22:22:03,262 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 22:22:03,262 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 22:22:03,262 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 22:22:03,263 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 22:22:03,263 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 22:22:03,263 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 22:22:03,304 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-24 22:22:03,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-24 22:22:03,313 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:22:03,314 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:22:03,317 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:22:03,323 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:22:03,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1357695353, now seen corresponding path program 1 times [2018-10-24 22:22:03,325 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:22:03,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:22:03,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:22:03,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:22:03,384 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:22:03,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:22:03,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:22:03,869 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:22:03,869 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:22:03,869 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:22:03,876 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:22:03,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:22:03,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:22:03,895 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 4 states. [2018-10-24 22:22:14,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:22:14,788 INFO L93 Difference]: Finished difference Result 2974 states and 5747 transitions. [2018-10-24 22:22:14,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:22:14,789 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-10-24 22:22:14,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:22:14,828 INFO L225 Difference]: With dead ends: 2974 [2018-10-24 22:22:14,828 INFO L226 Difference]: Without dead ends: 2193 [2018-10-24 22:22:14,841 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:22:14,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2018-10-24 22:22:15,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 1474. [2018-10-24 22:22:15,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-24 22:22:15,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2384 transitions. [2018-10-24 22:22:15,043 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2384 transitions. Word has length 39 [2018-10-24 22:22:15,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:22:15,044 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2384 transitions. [2018-10-24 22:22:15,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:22:15,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2384 transitions. [2018-10-24 22:22:15,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-10-24 22:22:15,056 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:22:15,057 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:22:15,057 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:22:15,057 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:22:15,058 INFO L82 PathProgramCache]: Analyzing trace with hash -947150568, now seen corresponding path program 1 times [2018-10-24 22:22:15,058 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:22:15,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:22:15,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:22:15,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:22:15,061 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:22:15,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:22:15,397 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:22:15,398 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:22:15,398 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 22:22:15,398 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:22:15,400 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 22:22:15,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 22:22:15,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 22:22:15,401 INFO L87 Difference]: Start difference. First operand 1474 states and 2384 transitions. Second operand 5 states. [2018-10-24 22:22:27,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:22:27,283 INFO L93 Difference]: Finished difference Result 4422 states and 7235 transitions. [2018-10-24 22:22:27,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:22:27,289 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2018-10-24 22:22:27,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:22:27,316 INFO L225 Difference]: With dead ends: 4422 [2018-10-24 22:22:27,316 INFO L226 Difference]: Without dead ends: 2954 [2018-10-24 22:22:27,324 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:22:27,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2018-10-24 22:22:27,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2930. [2018-10-24 22:22:27,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2930 states. [2018-10-24 22:22:27,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2930 states to 2930 states and 4516 transitions. [2018-10-24 22:22:27,436 INFO L78 Accepts]: Start accepts. Automaton has 2930 states and 4516 transitions. Word has length 109 [2018-10-24 22:22:27,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:22:27,437 INFO L481 AbstractCegarLoop]: Abstraction has 2930 states and 4516 transitions. [2018-10-24 22:22:27,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 22:22:27,437 INFO L276 IsEmpty]: Start isEmpty. Operand 2930 states and 4516 transitions. [2018-10-24 22:22:27,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-24 22:22:27,445 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:22:27,446 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:22:27,451 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:22:27,451 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:22:27,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1923837536, now seen corresponding path program 1 times [2018-10-24 22:22:27,452 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:22:27,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:22:27,453 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:22:27,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:22:27,453 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:22:27,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:22:27,732 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:22:27,733 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:22:27,733 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:22:27,733 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:22:27,734 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:22:27,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:22:27,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:22:27,735 INFO L87 Difference]: Start difference. First operand 2930 states and 4516 transitions. Second operand 6 states. [2018-10-24 22:22:36,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:22:36,884 INFO L93 Difference]: Finished difference Result 10279 states and 16084 transitions. [2018-10-24 22:22:36,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:22:36,887 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2018-10-24 22:22:36,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:22:36,933 INFO L225 Difference]: With dead ends: 10279 [2018-10-24 22:22:36,933 INFO L226 Difference]: Without dead ends: 7355 [2018-10-24 22:22:36,949 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 22:22:36,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7355 states. [2018-10-24 22:22:37,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7355 to 7296. [2018-10-24 22:22:37,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7296 states. [2018-10-24 22:22:37,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7296 states to 7296 states and 10495 transitions. [2018-10-24 22:22:37,179 INFO L78 Accepts]: Start accepts. Automaton has 7296 states and 10495 transitions. Word has length 113 [2018-10-24 22:22:37,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:22:37,180 INFO L481 AbstractCegarLoop]: Abstraction has 7296 states and 10495 transitions. [2018-10-24 22:22:37,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:22:37,180 INFO L276 IsEmpty]: Start isEmpty. Operand 7296 states and 10495 transitions. [2018-10-24 22:22:37,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-24 22:22:37,182 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:22:37,183 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:22:37,183 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:22:37,183 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:22:37,183 INFO L82 PathProgramCache]: Analyzing trace with hash 397539053, now seen corresponding path program 1 times [2018-10-24 22:22:37,184 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:22:37,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:22:37,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:22:37,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:22:37,185 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:22:37,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:22:37,395 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:22:37,395 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:22:37,396 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:22:37,396 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:22:37,396 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:22:37,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:22:37,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:22:37,397 INFO L87 Difference]: Start difference. First operand 7296 states and 10495 transitions. Second operand 6 states. [2018-10-24 22:22:45,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:22:45,617 INFO L93 Difference]: Finished difference Result 18993 states and 28013 transitions. [2018-10-24 22:22:45,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:22:45,624 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2018-10-24 22:22:45,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:22:45,682 INFO L225 Difference]: With dead ends: 18993 [2018-10-24 22:22:45,683 INFO L226 Difference]: Without dead ends: 11703 [2018-10-24 22:22:45,714 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 22:22:45,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11703 states. [2018-10-24 22:22:45,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11703 to 11639. [2018-10-24 22:22:45,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11639 states. [2018-10-24 22:22:45,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11639 states to 11639 states and 16002 transitions. [2018-10-24 22:22:45,990 INFO L78 Accepts]: Start accepts. Automaton has 11639 states and 16002 transitions. Word has length 134 [2018-10-24 22:22:45,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:22:45,991 INFO L481 AbstractCegarLoop]: Abstraction has 11639 states and 16002 transitions. [2018-10-24 22:22:45,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:22:45,991 INFO L276 IsEmpty]: Start isEmpty. Operand 11639 states and 16002 transitions. [2018-10-24 22:22:45,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-10-24 22:22:45,994 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:22:45,995 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:22:45,995 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:22:45,995 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:22:45,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1776632544, now seen corresponding path program 1 times [2018-10-24 22:22:45,995 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:22:45,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:22:45,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:22:45,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:22:45,997 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:22:46,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:22:46,304 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:22:46,593 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:22:46,593 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:22:46,593 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:22:46,593 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:22:46,594 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:22:46,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:22:46,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:22:46,596 INFO L87 Difference]: Start difference. First operand 11639 states and 16002 transitions. Second operand 6 states. [2018-10-24 22:22:52,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:22:52,114 INFO L93 Difference]: Finished difference Result 27658 states and 38922 transitions. [2018-10-24 22:22:52,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:22:52,114 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 177 [2018-10-24 22:22:52,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:22:52,171 INFO L225 Difference]: With dead ends: 27658 [2018-10-24 22:22:52,172 INFO L226 Difference]: Without dead ends: 16025 [2018-10-24 22:22:52,216 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 [2018-10-24 22:22:52,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16025 states. [2018-10-24 22:22:52,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16025 to 15947. [2018-10-24 22:22:52,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15947 states. [2018-10-24 22:22:52,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15947 states to 15947 states and 19810 transitions. [2018-10-24 22:22:52,525 INFO L78 Accepts]: Start accepts. Automaton has 15947 states and 19810 transitions. Word has length 177 [2018-10-24 22:22:52,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:22:52,526 INFO L481 AbstractCegarLoop]: Abstraction has 15947 states and 19810 transitions. [2018-10-24 22:22:52,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:22:52,526 INFO L276 IsEmpty]: Start isEmpty. Operand 15947 states and 19810 transitions. [2018-10-24 22:22:52,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-10-24 22:22:52,533 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:22:52,533 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 22:22:52,533 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:22:52,533 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:22:52,534 INFO L82 PathProgramCache]: Analyzing trace with hash 952767299, now seen corresponding path program 1 times [2018-10-24 22:22:52,534 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:22:52,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:22:52,535 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:22:52,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:22:52,535 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:22:52,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:22:53,063 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-10-24 22:22:53,064 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:22:53,064 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:22:53,064 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:22:53,065 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:22:53,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:22:53,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:22:53,065 INFO L87 Difference]: Start difference. First operand 15947 states and 19810 transitions. Second operand 4 states. [2018-10-24 22:23:01,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:23:01,876 INFO L93 Difference]: Finished difference Result 60752 states and 78092 transitions. [2018-10-24 22:23:01,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:23:01,877 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 235 [2018-10-24 22:23:01,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:23:02,031 INFO L225 Difference]: With dead ends: 60752 [2018-10-24 22:23:02,032 INFO L226 Difference]: Without dead ends: 44811 [2018-10-24 22:23:02,109 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 [2018-10-24 22:23:02,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44811 states. [2018-10-24 22:23:02,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44811 to 44811. [2018-10-24 22:23:02,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44811 states. [2018-10-24 22:23:03,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44811 states to 44811 states and 55159 transitions. [2018-10-24 22:23:03,356 INFO L78 Accepts]: Start accepts. Automaton has 44811 states and 55159 transitions. Word has length 235 [2018-10-24 22:23:03,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:23:03,357 INFO L481 AbstractCegarLoop]: Abstraction has 44811 states and 55159 transitions. [2018-10-24 22:23:03,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:23:03,357 INFO L276 IsEmpty]: Start isEmpty. Operand 44811 states and 55159 transitions. [2018-10-24 22:23:03,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-10-24 22:23:03,381 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:23:03,381 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 22:23:03,382 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:23:03,385 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:23:03,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1249259458, now seen corresponding path program 1 times [2018-10-24 22:23:03,386 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:23:03,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:23:03,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:23:03,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:23:03,387 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:23:03,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:23:03,766 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:23:04,108 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 59 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:23:04,109 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:23:04,109 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:23:04,110 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 301 with the following transitions: [2018-10-24 22:23:04,113 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1835], [1837], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2328], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2388], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 22:23:04,197 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:23:04,198 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:23:08,074 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:23:08,076 INFO L272 AbstractInterpreter]: Visited 143 different actions 143 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 22:23:08,088 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:23:08,088 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:23:10,551 INFO L232 lantSequenceWeakener]: Weakened 292 states. On average, predicates are now at 77.67% of their original sizes. [2018-10-24 22:23:10,552 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:23:11,021 INFO L413 sIntCurrentIteration]: We have 299 unified AI predicates [2018-10-24 22:23:11,021 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:23:11,022 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:23:11,022 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2018-10-24 22:23:11,023 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:23:11,023 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 22:23:11,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 22:23:11,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 22:23:11,024 INFO L87 Difference]: Start difference. First operand 44811 states and 55159 transitions. Second operand 7 states. [2018-10-24 22:23:21,330 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 22:25:22,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:25:22,946 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:25:22,951 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:25:22,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:25:22 BoogieIcfgContainer [2018-10-24 22:25:22,951 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:25:22,952 INFO L168 Benchmark]: Toolchain (without parser) took 210829.40 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 161.7 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-10-24 22:25:22,953 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-10-24 22:25:22,954 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1667.39 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-24 22:25:22,955 INFO L168 Benchmark]: Boogie Procedure Inliner took 388.44 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 748.7 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -925.5 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. [2018-10-24 22:25:22,957 INFO L168 Benchmark]: Boogie Preprocessor took 250.73 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: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2018-10-24 22:25:22,958 INFO L168 Benchmark]: RCFGBuilder took 8721.24 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 495.3 MB). Peak memory consumption was 495.3 MB. Max. memory is 7.1 GB. [2018-10-24 22:25:22,959 INFO L168 Benchmark]: TraceAbstraction took 199790.00 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 1.2 GB in the end (delta: 429.5 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-24 22:25:22,967 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 1667.39 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 388.44 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 748.7 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -925.5 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 250.73 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: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8721.24 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 495.3 MB). Peak memory consumption was 495.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 199790.00 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 1.2 GB in the end (delta: 429.5 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 105]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 105). Cancelled while BasicCegarLoop was constructing difference of abstraction (44811states) and FLOYD_HOARE automaton (currently 7 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (82165 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 199.7s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 187.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1928 SDtfs, 15632 SDslu, 1244 SDs, 0 SdLazy, 32549 SolverSat, 7516 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 126.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 350 GetRequests, 309 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44811occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.9s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.996625224177209 AbsIntWeakeningRatio, 0.08695652173913043 AbsIntAvgWeakeningVarsNumRemoved, 901.3846153846154 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.3s AutomataMinimizationTime, 6 MinimizatonAttempts, 944 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 1107 NumberOfCodeBlocks, 1107 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1100 ConstructedInterpolants, 0 QuantifiedInterpolants, 786575 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 340/468 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown