java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label56_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 19:44:51,131 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 19:44:51,133 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 19:44:51,145 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 19:44:51,145 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 19:44:51,146 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 19:44:51,148 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 19:44:51,150 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 19:44:51,152 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 19:44:51,152 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 19:44:51,153 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 19:44:51,154 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 19:44:51,155 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 19:44:51,156 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 19:44:51,157 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 19:44:51,158 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 19:44:51,159 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 19:44:51,161 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 19:44:51,164 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 19:44:51,165 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 19:44:51,167 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 19:44:51,168 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 19:44:51,171 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 19:44:51,171 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 19:44:51,171 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 19:44:51,172 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 19:44:51,173 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 19:44:51,174 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 19:44:51,175 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 19:44:51,177 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 19:44:51,177 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 19:44:51,178 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-12 19:44:51,181 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 19:44:51,209 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 19:44:51,210 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 19:44:51,211 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 19:44:51,211 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 19:44:51,211 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 19:44:51,211 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 19:44:51,214 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 19:44:51,214 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 19:44:51,215 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 19:44:51,215 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 19:44:51,215 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 19:44:51,215 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 19:44:51,215 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 19:44:51,216 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 19:44:51,217 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 19:44:51,218 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 19:44:51,218 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 19:44:51,218 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 19:44:51,219 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 19:44:51,220 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 19:44:51,220 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 19:44:51,220 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 19:44:51,220 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 19:44:51,221 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 19:44:51,221 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 19:44:51,221 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 19:44:51,222 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 19:44:51,222 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 19:44:51,222 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 19:44:51,222 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 19:44:51,222 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 19:44:51,223 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 19:44:51,223 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 19:44:51,223 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 19:44:51,223 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 19:44:51,294 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 19:44:51,309 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 19:44:51,313 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 19:44:51,315 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 19:44:51,316 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 19:44:51,317 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label56_true-unreach-call.c [2018-11-12 19:44:51,387 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79a14c0b7/a879d5f47fb7449da108540d0419fe06/FLAG99b5a88fd [2018-11-12 19:44:52,137 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 19:44:52,140 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label56_true-unreach-call.c [2018-11-12 19:44:52,168 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79a14c0b7/a879d5f47fb7449da108540d0419fe06/FLAG99b5a88fd [2018-11-12 19:44:52,187 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79a14c0b7/a879d5f47fb7449da108540d0419fe06 [2018-11-12 19:44:52,200 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 19:44:52,202 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 19:44:52,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 19:44:52,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 19:44:52,211 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 19:44:52,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:44:52" (1/1) ... [2018-11-12 19:44:52,216 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4360854e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:44:52, skipping insertion in model container [2018-11-12 19:44:52,216 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:44:52" (1/1) ... [2018-11-12 19:44:52,228 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 19:44:52,372 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 19:44:53,549 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:44:53,554 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 19:44:53,993 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:44:54,027 INFO L193 MainTranslator]: Completed translation [2018-11-12 19:44:54,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:44:54 WrapperNode [2018-11-12 19:44:54,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 19:44:54,029 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 19:44:54,029 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 19:44:54,030 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 19:44:54,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:44:54" (1/1) ... [2018-11-12 19:44:54,301 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:44:54" (1/1) ... [2018-11-12 19:44:54,312 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 19:44:54,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 19:44:54,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 19:44:54,313 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 19:44:54,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:44:54" (1/1) ... [2018-11-12 19:44:54,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:44:54" (1/1) ... [2018-11-12 19:44:54,348 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:44:54" (1/1) ... [2018-11-12 19:44:54,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:44:54" (1/1) ... [2018-11-12 19:44:54,461 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:44:54" (1/1) ... [2018-11-12 19:44:54,497 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:44:54" (1/1) ... [2018-11-12 19:44:54,530 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:44:54" (1/1) ... [2018-11-12 19:44:54,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 19:44:54,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 19:44:54,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 19:44:54,562 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 19:44:54,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:44:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 19:44:54,637 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 19:44:54,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 19:44:54,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 19:44:54,637 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-12 19:44:54,638 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-12 19:44:54,638 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 19:44:54,638 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 19:44:54,638 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 19:44:54,638 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 19:44:54,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 19:44:54,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 19:44:54,640 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 19:44:54,640 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 19:45:02,406 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 19:45:02,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:45:02 BoogieIcfgContainer [2018-11-12 19:45:02,407 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 19:45:02,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 19:45:02,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 19:45:02,411 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 19:45:02,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 07:44:52" (1/3) ... [2018-11-12 19:45:02,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a06424b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:45:02, skipping insertion in model container [2018-11-12 19:45:02,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:44:54" (2/3) ... [2018-11-12 19:45:02,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a06424b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:45:02, skipping insertion in model container [2018-11-12 19:45:02,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:45:02" (3/3) ... [2018-11-12 19:45:02,415 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label56_true-unreach-call.c [2018-11-12 19:45:02,426 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 19:45:02,439 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 19:45:02,459 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 19:45:02,519 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 19:45:02,519 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 19:45:02,519 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 19:45:02,520 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 19:45:02,520 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 19:45:02,520 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 19:45:02,520 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 19:45:02,520 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 19:45:02,572 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-12 19:45:02,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-11-12 19:45:02,582 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:45:02,583 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:45:02,586 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:45:02,592 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:45:02,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1650138055, now seen corresponding path program 1 times [2018-11-12 19:45:02,595 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:45:02,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:45:02,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:45:02,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:45:02,649 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:45:02,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:45:03,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:45:03,141 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:45:03,141 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 19:45:03,142 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:45:03,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 19:45:03,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 19:45:03,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:45:03,167 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 4 states. [2018-11-12 19:45:15,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:45:15,066 INFO L93 Difference]: Finished difference Result 2974 states and 5747 transitions. [2018-11-12 19:45:15,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 19:45:15,069 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2018-11-12 19:45:15,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:45:15,109 INFO L225 Difference]: With dead ends: 2974 [2018-11-12 19:45:15,110 INFO L226 Difference]: Without dead ends: 2193 [2018-11-12 19:45:15,122 INFO L604 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 [2018-11-12 19:45:15,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2018-11-12 19:45:15,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 2193. [2018-11-12 19:45:15,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2193 states. [2018-11-12 19:45:15,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2193 states to 2193 states and 3677 transitions. [2018-11-12 19:45:15,297 INFO L78 Accepts]: Start accepts. Automaton has 2193 states and 3677 transitions. Word has length 55 [2018-11-12 19:45:15,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:45:15,298 INFO L480 AbstractCegarLoop]: Abstraction has 2193 states and 3677 transitions. [2018-11-12 19:45:15,298 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 19:45:15,298 INFO L276 IsEmpty]: Start isEmpty. Operand 2193 states and 3677 transitions. [2018-11-12 19:45:15,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-11-12 19:45:15,311 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:45:15,312 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:45:15,312 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:45:15,312 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:45:15,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1840391000, now seen corresponding path program 1 times [2018-11-12 19:45:15,313 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:45:15,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:45:15,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:45:15,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:45:15,315 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:45:15,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:45:15,757 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:45:15,757 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:45:15,757 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 19:45:15,757 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:45:15,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 19:45:15,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 19:45:15,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 19:45:15,760 INFO L87 Difference]: Start difference. First operand 2193 states and 3677 transitions. Second operand 5 states. [2018-11-12 19:45:25,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:45:25,610 INFO L93 Difference]: Finished difference Result 6600 states and 11248 transitions. [2018-11-12 19:45:25,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:45:25,613 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2018-11-12 19:45:25,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:45:25,650 INFO L225 Difference]: With dead ends: 6600 [2018-11-12 19:45:25,650 INFO L226 Difference]: Without dead ends: 4413 [2018-11-12 19:45:25,659 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 19:45:25,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4413 states. [2018-11-12 19:45:25,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4413 to 4378. [2018-11-12 19:45:25,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4378 states. [2018-11-12 19:45:25,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4378 states to 4378 states and 6986 transitions. [2018-11-12 19:45:25,829 INFO L78 Accepts]: Start accepts. Automaton has 4378 states and 6986 transitions. Word has length 125 [2018-11-12 19:45:25,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:45:25,830 INFO L480 AbstractCegarLoop]: Abstraction has 4378 states and 6986 transitions. [2018-11-12 19:45:25,830 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 19:45:25,831 INFO L276 IsEmpty]: Start isEmpty. Operand 4378 states and 6986 transitions. [2018-11-12 19:45:25,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-11-12 19:45:25,844 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:45:25,844 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:45:25,844 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:45:25,844 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:45:25,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1923458833, now seen corresponding path program 1 times [2018-11-12 19:45:25,848 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:45:25,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:45:25,849 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:45:25,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:45:25,850 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:45:25,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:45:26,142 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:45:26,143 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:45:26,143 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 19:45:26,143 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:45:26,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:45:26,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:45:26,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:45:26,145 INFO L87 Difference]: Start difference. First operand 4378 states and 6986 transitions. Second operand 6 states. [2018-11-12 19:45:31,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:45:31,298 INFO L93 Difference]: Finished difference Result 11002 states and 17598 transitions. [2018-11-12 19:45:31,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:45:31,301 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 152 [2018-11-12 19:45:31,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:45:31,340 INFO L225 Difference]: With dead ends: 11002 [2018-11-12 19:45:31,340 INFO L226 Difference]: Without dead ends: 6630 [2018-11-12 19:45:31,355 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 19:45:31,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6630 states. [2018-11-12 19:45:31,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6630 to 6590. [2018-11-12 19:45:31,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6590 states. [2018-11-12 19:45:31,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6590 states to 6590 states and 9022 transitions. [2018-11-12 19:45:31,516 INFO L78 Accepts]: Start accepts. Automaton has 6590 states and 9022 transitions. Word has length 152 [2018-11-12 19:45:31,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:45:31,516 INFO L480 AbstractCegarLoop]: Abstraction has 6590 states and 9022 transitions. [2018-11-12 19:45:31,517 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:45:31,517 INFO L276 IsEmpty]: Start isEmpty. Operand 6590 states and 9022 transitions. [2018-11-12 19:45:31,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-11-12 19:45:31,521 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:45:31,522 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-12 19:45:31,522 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:45:31,522 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:45:31,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1294774890, now seen corresponding path program 1 times [2018-11-12 19:45:31,523 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:45:31,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:45:31,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:45:31,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:45:31,524 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:45:31,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:45:31,813 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-12 19:45:31,814 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:45:31,814 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 19:45:31,814 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:45:31,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 19:45:31,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 19:45:31,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:45:31,816 INFO L87 Difference]: Start difference. First operand 6590 states and 9022 transitions. Second operand 4 states. [2018-11-12 19:45:39,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:45:39,130 INFO L93 Difference]: Finished difference Result 26034 states and 37031 transitions. [2018-11-12 19:45:39,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 19:45:39,130 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 232 [2018-11-12 19:45:39,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:45:39,225 INFO L225 Difference]: With dead ends: 26034 [2018-11-12 19:45:39,226 INFO L226 Difference]: Without dead ends: 19450 [2018-11-12 19:45:39,265 INFO L604 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 [2018-11-12 19:45:39,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19450 states. [2018-11-12 19:45:39,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19450 to 19450. [2018-11-12 19:45:39,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19450 states. [2018-11-12 19:45:39,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19450 states to 19450 states and 25983 transitions. [2018-11-12 19:45:39,675 INFO L78 Accepts]: Start accepts. Automaton has 19450 states and 25983 transitions. Word has length 232 [2018-11-12 19:45:39,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:45:39,676 INFO L480 AbstractCegarLoop]: Abstraction has 19450 states and 25983 transitions. [2018-11-12 19:45:39,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 19:45:39,676 INFO L276 IsEmpty]: Start isEmpty. Operand 19450 states and 25983 transitions. [2018-11-12 19:45:39,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-11-12 19:45:39,685 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:45:39,685 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2018-11-12 19:45:39,686 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:45:39,686 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:45:39,686 INFO L82 PathProgramCache]: Analyzing trace with hash 2023127083, now seen corresponding path program 1 times [2018-11-12 19:45:39,686 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:45:39,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:45:39,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:45:39,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:45:39,688 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:45:39,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:45:40,128 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:45:40,129 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:45:40,129 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:45:40,130 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 240 with the following transitions: [2018-11-12 19:45:40,132 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1963], [1965], [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], [2144], [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], [2264], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-12 19:45:40,182 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:45:40,183 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:45:40,800 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:45:40,810 INFO L272 AbstractInterpreter]: Visited 112 different actions 112 times. Never merged. Never widened. Performed 971 root evaluator evaluations with a maximum evaluation depth of 6. Performed 971 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 24 variables. [2018-11-12 19:45:40,863 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:45:40,863 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:45:41,627 INFO L227 lantSequenceWeakener]: Weakened 230 states. On average, predicates are now at 77.99% of their original sizes. [2018-11-12 19:45:41,627 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:45:41,735 INFO L415 sIntCurrentIteration]: We unified 238 AI predicates to 238 [2018-11-12 19:45:41,735 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:45:41,736 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:45:41,736 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-12 19:45:41,737 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:45:41,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-12 19:45:41,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-12 19:45:41,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-12 19:45:41,738 INFO L87 Difference]: Start difference. First operand 19450 states and 25983 transitions. Second operand 7 states. [2018-11-12 19:45:53,642 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:46:25,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:46:25,131 INFO L93 Difference]: Finished difference Result 39599 states and 52734 transitions. [2018-11-12 19:46:25,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:46:25,132 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 239 [2018-11-12 19:46:25,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:46:25,195 INFO L225 Difference]: With dead ends: 39599 [2018-11-12 19:46:25,195 INFO L226 Difference]: Without dead ends: 20155 [2018-11-12 19:46:25,244 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 239 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-12 19:46:25,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20155 states. [2018-11-12 19:46:25,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20155 to 20153. [2018-11-12 19:46:25,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20153 states. [2018-11-12 19:46:25,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20153 states to 20153 states and 26698 transitions. [2018-11-12 19:46:25,605 INFO L78 Accepts]: Start accepts. Automaton has 20153 states and 26698 transitions. Word has length 239 [2018-11-12 19:46:25,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:46:25,606 INFO L480 AbstractCegarLoop]: Abstraction has 20153 states and 26698 transitions. [2018-11-12 19:46:25,606 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-12 19:46:25,606 INFO L276 IsEmpty]: Start isEmpty. Operand 20153 states and 26698 transitions. [2018-11-12 19:46:25,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-11-12 19:46:25,620 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:46:25,621 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:46:25,621 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:46:25,621 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:46:25,622 INFO L82 PathProgramCache]: Analyzing trace with hash -577564023, now seen corresponding path program 1 times [2018-11-12 19:46:25,622 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:46:25,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:46:25,623 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:46:25,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:46:25,623 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:46:25,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:46:26,219 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 19:46:26,418 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 19:46:26,641 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 19:46:27,065 WARN L179 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-12 19:46:27,546 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 203 proven. 197 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:46:27,547 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:46:27,547 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:46:27,547 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 427 with the following transitions: [2018-11-12 19:46:27,548 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1963], [1965], [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], [2144], [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], [2264], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-12 19:46:27,556 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:46:27,557 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:46:28,521 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:46:28,521 INFO L272 AbstractInterpreter]: Visited 196 different actions 388 times. Merged at 5 different actions 7 times. Never widened. Performed 6143 root evaluator evaluations with a maximum evaluation depth of 6. Performed 6143 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:46:28,562 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:46:28,563 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:46:29,820 INFO L227 lantSequenceWeakener]: Weakened 169 states. On average, predicates are now at 78.05% of their original sizes. [2018-11-12 19:46:29,820 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:46:33,435 INFO L415 sIntCurrentIteration]: We unified 425 AI predicates to 425 [2018-11-12 19:46:33,436 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:46:33,436 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:46:33,436 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2018-11-12 19:46:33,436 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:46:33,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-12 19:46:33,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-12 19:46:33,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2018-11-12 19:46:33,438 INFO L87 Difference]: Start difference. First operand 20153 states and 26698 transitions. Second operand 16 states. [2018-11-12 19:47:00,977 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:47:24,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:47:24,032 INFO L93 Difference]: Finished difference Result 41141 states and 54287 transitions. [2018-11-12 19:47:24,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-12 19:47:24,033 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 426 [2018-11-12 19:47:24,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:47:24,122 INFO L225 Difference]: With dead ends: 41141 [2018-11-12 19:47:24,122 INFO L226 Difference]: Without dead ends: 20444 [2018-11-12 19:47:24,183 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 433 GetRequests, 352 SyntacticMatches, 59 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552 [2018-11-12 19:47:24,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20444 states. [2018-11-12 19:47:24,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20444 to 20153. [2018-11-12 19:47:24,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20153 states. [2018-11-12 19:47:24,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20153 states to 20153 states and 26690 transitions. [2018-11-12 19:47:24,686 INFO L78 Accepts]: Start accepts. Automaton has 20153 states and 26690 transitions. Word has length 426 [2018-11-12 19:47:24,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:47:24,687 INFO L480 AbstractCegarLoop]: Abstraction has 20153 states and 26690 transitions. [2018-11-12 19:47:24,687 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-12 19:47:24,687 INFO L276 IsEmpty]: Start isEmpty. Operand 20153 states and 26690 transitions. [2018-11-12 19:47:24,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 768 [2018-11-12 19:47:24,715 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:47:24,715 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:47:24,716 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:47:24,716 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:47:24,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1518042946, now seen corresponding path program 1 times [2018-11-12 19:47:24,717 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:47:24,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:47:24,718 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:47:24,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:47:24,718 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:47:24,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:47:25,347 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:47:26,834 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 221 proven. 180 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-12 19:47:26,835 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:47:26,835 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:47:26,835 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 768 with the following transitions: [2018-11-12 19:47:26,837 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [37], [739], [740], [744], [748], [752], [756], [760], [764], [768], [772], [776], [780], [784], [788], [792], [796], [800], [804], [808], [812], [816], [820], [824], [828], [832], [836], [840], [844], [848], [852], [856], [860], [864], [868], [872], [876], [880], [884], [888], [892], [896], [900], [904], [908], [912], [916], [920], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [964], [968], [972], [976], [980], [984], [988], [992], [996], [1000], [1004], [1008], [1012], [1016], [1020], [1024], [1028], [1032], [1036], [1040], [1044], [1048], [1052], [1056], [1060], [1064], [1068], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1184], [1188], [1192], [1196], [1200], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1248], [1252], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1360], [1364], [1368], [1372], [1376], [1380], [1384], [1388], [1392], [1396], [1400], [1404], [1408], [1412], [1416], [1420], [1424], [1428], [1432], [1436], [1440], [1444], [1448], [1452], [1456], [1460], [1464], [1468], [1472], [1476], [1480], [1484], [1488], [1492], [1496], [1500], [1504], [1508], [1512], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1552], [1556], [1560], [1564], [1568], [1572], [1576], [1580], [1584], [1588], [1592], [1596], [1600], [1604], [1608], [1612], [1616], [1620], [1622], [1623], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1963], [1965], [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], [2144], [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], [2264], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2949], [2953], [2957], [2961], [2965], [2969], [2973], [2977], [2981], [2985], [2989], [2993], [2995], [2996], [3000], [3004], [3010], [3014], [3016], [3021], [3022], [3023], [3024], [3025], [3026], [3027], [3029], [3030] [2018-11-12 19:47:26,860 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:47:26,860 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:47:28,876 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:47:28,876 INFO L272 AbstractInterpreter]: Visited 537 different actions 1068 times. Merged at 5 different actions 5 times. Never widened. Performed 16816 root evaluator evaluations with a maximum evaluation depth of 6. Performed 16816 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:47:28,882 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:47:28,882 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:47:29,891 INFO L227 lantSequenceWeakener]: Weakened 458 states. On average, predicates are now at 77.77% of their original sizes. [2018-11-12 19:47:29,891 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:47:30,504 INFO L415 sIntCurrentIteration]: We unified 766 AI predicates to 766 [2018-11-12 19:47:30,504 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:47:30,505 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:47:30,505 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [30] imperfect sequences [8] total 36 [2018-11-12 19:47:30,505 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:47:30,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-11-12 19:47:30,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-11-12 19:47:30,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=759, Unknown=0, NotChecked=0, Total=870 [2018-11-12 19:47:30,507 INFO L87 Difference]: Start difference. First operand 20153 states and 26690 transitions. Second operand 30 states. [2018-11-12 19:48:09,786 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-12 19:48:24,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-11-12 19:48:24,031 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 19:48:24,036 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 19:48:24,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 07:48:24 BoogieIcfgContainer [2018-11-12 19:48:24,036 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 19:48:24,037 INFO L168 Benchmark]: Toolchain (without parser) took 211836.55 ms. Allocated memory was 1.5 GB in the beginning and 4.8 GB in the end (delta: 3.2 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -805.6 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-11-12 19:48:24,039 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 19:48:24,039 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1824.93 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-11-12 19:48:24,040 INFO L168 Benchmark]: Boogie Procedure Inliner took 283.55 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 777.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -971.1 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-12 19:48:24,041 INFO L168 Benchmark]: Boogie Preprocessor took 248.73 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: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-11-12 19:48:24,042 INFO L168 Benchmark]: RCFGBuilder took 7845.02 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: 506.4 MB). Peak memory consumption was 506.4 MB. Max. memory is 7.1 GB. [2018-11-12 19:48:24,043 INFO L168 Benchmark]: TraceAbstraction took 201628.68 ms. Allocated memory was 2.3 GB in the beginning and 4.8 GB in the end (delta: 2.4 GB). Free memory was 1.7 GB in the beginning and 2.2 GB in the end (delta: -502.6 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-11-12 19:48:24,049 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1824.93 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 283.55 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 777.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -971.1 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 248.73 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: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7845.02 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: 506.4 MB). Peak memory consumption was 506.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 201628.68 ms. Allocated memory was 2.3 GB in the beginning and 4.8 GB in the end (delta: 2.4 GB). Free memory was 1.7 GB in the beginning and 2.2 GB in the end (delta: -502.6 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 153]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 153). Cancelled while BasicCegarLoop was constructing difference of abstraction (20153states) and FLOYD_HOARE automaton (currently 36 states, 30 states before enhancement),while ReachableStatesComputation was computing reachable states (14519 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 201.5s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 182.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3155 SDtfs, 18645 SDslu, 1737 SDs, 0 SdLazy, 42742 SolverSat, 5003 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 76.2s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 1491 GetRequests, 1334 SyntacticMatches, 61 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1198 ImplicationChecksByTransitivity, 5.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20153occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.7s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9979465383046483 AbsIntWeakeningRatio, 0.06857942617214835 AbsIntAvgWeakeningVarsNumRemoved, 16.793561931420573 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 6 MinimizatonAttempts, 368 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 1996 NumberOfCodeBlocks, 1996 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1989 ConstructedInterpolants, 0 QuantifiedInterpolants, 3685086 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 866/1245 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown