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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label29_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 23:56:43,332 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 23:56:43,334 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 23:56:43,349 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 23:56:43,349 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 23:56:43,351 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 23:56:43,352 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 23:56:43,356 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 23:56:43,358 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 23:56:43,359 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 23:56:43,361 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 23:56:43,361 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 23:56:43,362 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 23:56:43,364 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 23:56:43,365 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 23:56:43,368 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 23:56:43,375 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 23:56:43,377 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 23:56:43,382 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 23:56:43,383 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 23:56:43,386 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 23:56:43,388 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 23:56:43,390 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 23:56:43,390 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 23:56:43,390 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 23:56:43,391 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 23:56:43,392 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 23:56:43,392 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 23:56:43,393 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 23:56:43,394 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 23:56:43,394 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 23:56:43,395 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-06 23:56:43,395 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-06 23:56:43,395 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-06 23:56:43,396 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-06 23:56:43,397 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-06 23:56:43,397 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-06 23:56:43,412 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 23:56:43,412 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 23:56:43,413 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 23:56:43,413 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-06 23:56:43,413 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-06 23:56:43,413 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-06 23:56:43,413 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-06 23:56:43,414 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-06 23:56:43,414 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-06 23:56:43,414 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-06 23:56:43,414 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-06 23:56:43,414 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-06 23:56:43,415 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 23:56:43,415 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 23:56:43,415 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 23:56:43,415 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 23:56:43,416 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 23:56:43,416 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 23:56:43,416 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 23:56:43,416 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 23:56:43,416 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 23:56:43,417 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 23:56:43,417 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 23:56:43,417 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 23:56:43,417 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 23:56:43,417 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 23:56:43,418 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 23:56:43,418 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 23:56:43,418 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-06 23:56:43,418 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 23:56:43,418 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 23:56:43,419 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 23:56:43,419 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 23:56:43,419 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-06 23:56:43,460 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 23:56:43,473 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 23:56:43,477 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 23:56:43,478 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 23:56:43,478 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 23:56:43,479 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label29_false-unreach-call.c [2018-11-06 23:56:43,534 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c6093fe0/8bda52c11b62481599b4fa1a89910ccc/FLAGde21c2442 [2018-11-06 23:56:44,106 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 23:56:44,107 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label29_false-unreach-call.c [2018-11-06 23:56:44,132 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c6093fe0/8bda52c11b62481599b4fa1a89910ccc/FLAGde21c2442 [2018-11-06 23:56:44,155 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c6093fe0/8bda52c11b62481599b4fa1a89910ccc [2018-11-06 23:56:44,168 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 23:56:44,174 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 23:56:44,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 23:56:44,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 23:56:44,182 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 23:56:44,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:56:44" (1/1) ... [2018-11-06 23:56:44,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49f7c194 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:56:44, skipping insertion in model container [2018-11-06 23:56:44,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:56:44" (1/1) ... [2018-11-06 23:56:44,199 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 23:56:44,282 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 23:56:44,824 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 23:56:44,830 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 23:56:44,962 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 23:56:44,986 INFO L193 MainTranslator]: Completed translation [2018-11-06 23:56:44,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:56:44 WrapperNode [2018-11-06 23:56:44,987 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 23:56:44,988 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 23:56:44,988 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 23:56:44,988 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 23:56:45,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:56:44" (1/1) ... [2018-11-06 23:56:45,036 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:56:44" (1/1) ... [2018-11-06 23:56:45,150 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 23:56:45,151 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 23:56:45,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 23:56:45,151 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 23:56:45,162 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:56:44" (1/1) ... [2018-11-06 23:56:45,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:56:44" (1/1) ... [2018-11-06 23:56:45,165 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:56:44" (1/1) ... [2018-11-06 23:56:45,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:56:44" (1/1) ... [2018-11-06 23:56:45,207 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:56:44" (1/1) ... [2018-11-06 23:56:45,224 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:56:44" (1/1) ... [2018-11-06 23:56:45,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:56:44" (1/1) ... [2018-11-06 23:56:45,237 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 23:56:45,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 23:56:45,238 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 23:56:45,238 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 23:56:45,239 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:56:44" (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 [2018-11-06 23:56:45,316 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 23:56:45,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-06 23:56:45,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-06 23:56:45,317 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-06 23:56:45,317 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-06 23:56:45,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 23:56:45,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 23:56:45,318 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-06 23:56:45,318 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-06 23:56:48,581 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 23:56:48,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:56:48 BoogieIcfgContainer [2018-11-06 23:56:48,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 23:56:48,584 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 23:56:48,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 23:56:48,587 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 23:56:48,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:56:44" (1/3) ... [2018-11-06 23:56:48,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@605acf39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:56:48, skipping insertion in model container [2018-11-06 23:56:48,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:56:44" (2/3) ... [2018-11-06 23:56:48,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@605acf39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:56:48, skipping insertion in model container [2018-11-06 23:56:48,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:56:48" (3/3) ... [2018-11-06 23:56:48,591 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label29_false-unreach-call.c [2018-11-06 23:56:48,601 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 23:56:48,610 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 23:56:48,633 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 23:56:48,672 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 23:56:48,672 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 23:56:48,672 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 23:56:48,673 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 23:56:48,673 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 23:56:48,674 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 23:56:48,674 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 23:56:48,674 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 23:56:48,713 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-11-06 23:56:48,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-06 23:56:48,720 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:56:48,722 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] [2018-11-06 23:56:48,724 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:56:48,732 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:56:48,733 INFO L82 PathProgramCache]: Analyzing trace with hash -246853596, now seen corresponding path program 1 times [2018-11-06 23:56:48,735 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-06 23:56:48,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:56:48,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 23:56:48,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:56:48,791 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-06 23:56:48,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:56:49,143 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-06 23:56:49,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:56:49,174 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 23:56:49,174 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 23:56:49,174 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-06 23:56:49,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 23:56:49,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 23:56:49,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 23:56:49,195 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-11-06 23:56:51,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:56:51,097 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-11-06 23:56:51,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 23:56:51,101 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-11-06 23:56:51,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:56:51,119 INFO L225 Difference]: With dead ends: 574 [2018-11-06 23:56:51,119 INFO L226 Difference]: Without dead ends: 356 [2018-11-06 23:56:51,126 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 23:56:51,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-11-06 23:56:51,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-11-06 23:56:51,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-11-06 23:56:51,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 609 transitions. [2018-11-06 23:56:51,203 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 609 transitions. Word has length 22 [2018-11-06 23:56:51,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:56:51,204 INFO L480 AbstractCegarLoop]: Abstraction has 356 states and 609 transitions. [2018-11-06 23:56:51,204 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 23:56:51,204 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 609 transitions. [2018-11-06 23:56:51,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-11-06 23:56:51,210 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:56:51,210 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-06 23:56:51,211 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:56:51,211 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:56:51,211 INFO L82 PathProgramCache]: Analyzing trace with hash -409159749, now seen corresponding path program 1 times [2018-11-06 23:56:51,211 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-06 23:56:51,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:56:51,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 23:56:51,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:56:51,213 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-06 23:56:51,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:56:51,538 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:56:51,538 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 23:56:51,538 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-06 23:56:51,539 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-06 23:56:51,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 23:56:51,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 23:56:51,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-06 23:56:51,542 INFO L87 Difference]: Start difference. First operand 356 states and 609 transitions. Second operand 5 states. [2018-11-06 23:56:54,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:56:54,111 INFO L93 Difference]: Finished difference Result 1287 states and 2312 transitions. [2018-11-06 23:56:54,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-06 23:56:54,112 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2018-11-06 23:56:54,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:56:54,120 INFO L225 Difference]: With dead ends: 1287 [2018-11-06 23:56:54,121 INFO L226 Difference]: Without dead ends: 937 [2018-11-06 23:56:54,125 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-06 23:56:54,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2018-11-06 23:56:54,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 924. [2018-11-06 23:56:54,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 924 states. [2018-11-06 23:56:54,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1441 transitions. [2018-11-06 23:56:54,186 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1441 transitions. Word has length 105 [2018-11-06 23:56:54,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:56:54,187 INFO L480 AbstractCegarLoop]: Abstraction has 924 states and 1441 transitions. [2018-11-06 23:56:54,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 23:56:54,187 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1441 transitions. [2018-11-06 23:56:54,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-11-06 23:56:54,196 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:56:54,196 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 23:56:54,196 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:56:54,197 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:56:54,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1170323611, now seen corresponding path program 1 times [2018-11-06 23:56:54,197 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-06 23:56:54,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:56:54,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 23:56:54,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:56:54,199 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-06 23:56:54,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:56:54,505 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:56:54,505 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 23:56:54,505 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-06 23:56:54,506 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-06 23:56:54,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 23:56:54,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 23:56:54,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-06 23:56:54,507 INFO L87 Difference]: Start difference. First operand 924 states and 1441 transitions. Second operand 6 states. [2018-11-06 23:56:59,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:56:59,178 INFO L93 Difference]: Finished difference Result 2533 states and 4079 transitions. [2018-11-06 23:56:59,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 23:56:59,178 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2018-11-06 23:56:59,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:56:59,194 INFO L225 Difference]: With dead ends: 2533 [2018-11-06 23:56:59,194 INFO L226 Difference]: Without dead ends: 1615 [2018-11-06 23:56:59,202 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-06 23:56:59,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1615 states. [2018-11-06 23:56:59,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1615 to 1584. [2018-11-06 23:56:59,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2018-11-06 23:56:59,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 2317 transitions. [2018-11-06 23:56:59,283 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 2317 transitions. Word has length 121 [2018-11-06 23:56:59,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:56:59,284 INFO L480 AbstractCegarLoop]: Abstraction has 1584 states and 2317 transitions. [2018-11-06 23:56:59,284 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 23:56:59,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 2317 transitions. [2018-11-06 23:56:59,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-11-06 23:56:59,296 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:56:59,296 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-06 23:56:59,296 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:56:59,296 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:56:59,297 INFO L82 PathProgramCache]: Analyzing trace with hash -367068693, now seen corresponding path program 1 times [2018-11-06 23:56:59,297 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-06 23:56:59,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:56:59,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 23:56:59,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:56:59,299 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-06 23:56:59,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:56:59,652 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-06 23:57:00,023 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:57:00,024 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 23:57:00,024 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-06 23:57:00,024 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-06 23:57:00,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 23:57:00,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 23:57:00,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-06 23:57:00,026 INFO L87 Difference]: Start difference. First operand 1584 states and 2317 transitions. Second operand 6 states. [2018-11-06 23:57:01,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:57:01,318 INFO L93 Difference]: Finished difference Result 3502 states and 5313 transitions. [2018-11-06 23:57:01,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 23:57:01,319 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2018-11-06 23:57:01,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:57:01,333 INFO L225 Difference]: With dead ends: 3502 [2018-11-06 23:57:01,334 INFO L226 Difference]: Without dead ends: 1924 [2018-11-06 23:57:01,341 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-06 23:57:01,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1924 states. [2018-11-06 23:57:01,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1924 to 1885. [2018-11-06 23:57:01,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1885 states. [2018-11-06 23:57:01,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 2678 transitions. [2018-11-06 23:57:01,405 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 2678 transitions. Word has length 145 [2018-11-06 23:57:01,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:57:01,406 INFO L480 AbstractCegarLoop]: Abstraction has 1885 states and 2678 transitions. [2018-11-06 23:57:01,406 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 23:57:01,406 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 2678 transitions. [2018-11-06 23:57:01,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-11-06 23:57:01,412 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:57:01,413 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 23:57:01,413 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:57:01,413 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:57:01,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1267702892, now seen corresponding path program 1 times [2018-11-06 23:57:01,414 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-06 23:57:01,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:57:01,415 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 23:57:01,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:57:01,415 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-06 23:57:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:57:01,626 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:57:01,627 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 23:57:01,627 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-06 23:57:01,628 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 177 with the following transitions: [2018-11-06 23:57:01,631 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [77], [79], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [546], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-11-06 23:57:01,721 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-06 23:57:01,721 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-06 23:57:04,121 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-06 23:57:18,738 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-06 23:57:18,740 INFO L272 AbstractInterpreter]: Visited 91 different actions 516 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-06 23:57:18,790 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:57:18,790 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-06 23:57:21,825 INFO L227 lantSequenceWeakener]: Weakened 16 states. On average, predicates are now at 77.19% of their original sizes. [2018-11-06 23:57:21,826 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-06 23:57:33,511 INFO L415 sIntCurrentIteration]: We unified 175 AI predicates to 175 [2018-11-06 23:57:33,512 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-06 23:57:33,512 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 23:57:33,513 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [6] total 20 [2018-11-06 23:57:33,513 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-06 23:57:33,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-06 23:57:33,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-06 23:57:33,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2018-11-06 23:57:33,514 INFO L87 Difference]: Start difference. First operand 1885 states and 2678 transitions. Second operand 16 states. [2018-11-06 23:59:47,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:59:47,775 INFO L93 Difference]: Finished difference Result 4445 states and 6400 transitions. [2018-11-06 23:59:47,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-06 23:59:47,776 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 176 [2018-11-06 23:59:47,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:59:47,790 INFO L225 Difference]: With dead ends: 4445 [2018-11-06 23:59:47,790 INFO L226 Difference]: Without dead ends: 2566 [2018-11-06 23:59:47,799 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 182 GetRequests, 152 SyntacticMatches, 9 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2018-11-06 23:59:47,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2566 states. [2018-11-06 23:59:47,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2566 to 2331. [2018-11-06 23:59:47,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2331 states. [2018-11-06 23:59:47,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2331 states to 2331 states and 3169 transitions. [2018-11-06 23:59:47,946 INFO L78 Accepts]: Start accepts. Automaton has 2331 states and 3169 transitions. Word has length 176 [2018-11-06 23:59:47,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:59:47,947 INFO L480 AbstractCegarLoop]: Abstraction has 2331 states and 3169 transitions. [2018-11-06 23:59:47,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-06 23:59:47,947 INFO L276 IsEmpty]: Start isEmpty. Operand 2331 states and 3169 transitions. [2018-11-06 23:59:47,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-11-06 23:59:47,951 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:59:47,952 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 23:59:47,952 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:59:47,952 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:59:47,953 INFO L82 PathProgramCache]: Analyzing trace with hash -531546105, now seen corresponding path program 1 times [2018-11-06 23:59:47,953 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-06 23:59:47,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:59:47,954 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 23:59:47,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:59:47,955 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-06 23:59:47,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:59:48,342 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-06 23:59:48,917 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-06 23:59:49,150 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:59:49,150 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 23:59:49,151 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-06 23:59:49,151 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 186 with the following transitions: [2018-11-06 23:59:49,151 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [77], [79], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [546], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-11-06 23:59:49,158 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-06 23:59:49,158 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-06 23:59:50,695 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:00:01,592 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:00:01,593 INFO L272 AbstractInterpreter]: Visited 91 different actions 516 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 00:00:01,599 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:00:01,599 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:00:03,481 INFO L227 lantSequenceWeakener]: Weakened 18 states. On average, predicates are now at 76.7% of their original sizes. [2018-11-07 00:00:03,481 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:00:27,259 INFO L415 sIntCurrentIteration]: We unified 184 AI predicates to 184 [2018-11-07 00:00:27,259 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:00:27,259 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:00:27,260 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [12] total 30 [2018-11-07 00:00:27,260 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:00:27,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-07 00:00:27,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-07 00:00:27,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2018-11-07 00:00:27,261 INFO L87 Difference]: Start difference. First operand 2331 states and 3169 transitions. Second operand 20 states. Received shutdown request... [2018-11-07 00:00:36,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 00:00:36,967 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 00:00:36,973 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 00:00:36,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:00:36 BoogieIcfgContainer [2018-11-07 00:00:36,973 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 00:00:36,974 INFO L168 Benchmark]: Toolchain (without parser) took 232804.04 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 898.4 MB. Max. memory is 7.1 GB. [2018-11-07 00:00:36,975 INFO L168 Benchmark]: CDTParser took 0.19 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. [2018-11-07 00:00:36,976 INFO L168 Benchmark]: CACSL2BoogieTranslator took 812.11 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-11-07 00:00:36,977 INFO L168 Benchmark]: Boogie Procedure Inliner took 162.47 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 752.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -826.1 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2018-11-07 00:00:36,978 INFO L168 Benchmark]: Boogie Preprocessor took 86.51 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 00:00:36,978 INFO L168 Benchmark]: RCFGBuilder took 3345.47 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 102.9 MB). Peak memory consumption was 102.9 MB. Max. memory is 7.1 GB. [2018-11-07 00:00:36,979 INFO L168 Benchmark]: TraceAbstraction took 228389.59 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 837.6 MB. Max. memory is 7.1 GB. [2018-11-07 00:00:36,984 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 812.11 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 162.47 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 752.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -826.1 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 86.51 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3345.47 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 102.9 MB). Peak memory consumption was 102.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 228389.59 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 837.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 49]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 49). Cancelled while BasicCegarLoop was constructing difference of abstraction (2331states) and FLOYD_HOARE automaton (currently 9 states, 20 states before enhancement),while ReachableStatesComputation was computing reachable states (43 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 228.3s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 154.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 552 SDtfs, 3654 SDslu, 569 SDs, 0 SdLazy, 5404 SolverSat, 1179 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 76.6s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 405 GetRequests, 303 SyntacticMatches, 37 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 37.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2331occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 29.6s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9934298171248637 AbsIntWeakeningRatio, 0.14484679665738162 AbsIntAvgWeakeningVarsNumRemoved, 153.41504178272982 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 318 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 754 NumberOfCodeBlocks, 754 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 748 ConstructedInterpolants, 0 QuantifiedInterpolants, 836667 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 252/256 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown