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/Problem17_label14_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 21:00:35,156 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 21:00:35,158 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 21:00:35,171 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 21:00:35,171 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 21:00:35,172 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 21:00:35,174 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 21:00:35,176 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 21:00:35,178 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 21:00:35,179 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 21:00:35,180 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 21:00:35,180 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 21:00:35,181 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 21:00:35,182 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 21:00:35,184 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 21:00:35,185 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 21:00:35,186 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 21:00:35,188 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 21:00:35,191 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 21:00:35,193 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 21:00:35,194 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 21:00:35,196 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 21:00:35,199 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 21:00:35,199 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 21:00:35,200 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 21:00:35,201 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 21:00:35,205 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 21:00:35,206 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 21:00:35,207 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 21:00:35,212 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 21:00:35,212 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 21:00:35,213 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 21:00:35,213 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 21:00:35,214 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 21:00:35,215 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 21:00:35,215 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 21:00:35,219 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 [2018-11-07 21:00:35,251 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 21:00:35,253 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 21:00:35,253 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 21:00:35,254 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 21:00:35,254 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 21:00:35,254 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 21:00:35,254 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 21:00:35,254 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 21:00:35,255 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 21:00:35,255 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 21:00:35,255 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 21:00:35,256 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 21:00:35,256 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 21:00:35,257 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 21:00:35,257 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 21:00:35,257 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 21:00:35,258 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 21:00:35,258 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 21:00:35,258 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 21:00:35,258 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 21:00:35,258 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 21:00:35,259 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 21:00:35,259 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 21:00:35,259 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 21:00:35,259 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 21:00:35,259 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 21:00:35,260 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 21:00:35,261 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 21:00:35,261 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 21:00:35,262 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 21:00:35,262 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 21:00:35,262 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 21:00:35,262 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 21:00:35,262 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 21:00:35,262 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 21:00:35,313 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 21:00:35,326 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 21:00:35,330 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 21:00:35,331 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 21:00:35,332 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 21:00:35,333 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label14_true-unreach-call.c [2018-11-07 21:00:35,399 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5625c1cf/ae1b328312a1448f87ece1282e228f65/FLAG818935ead [2018-11-07 21:00:36,168 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 21:00:36,169 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label14_true-unreach-call.c [2018-11-07 21:00:36,193 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5625c1cf/ae1b328312a1448f87ece1282e228f65/FLAG818935ead [2018-11-07 21:00:36,212 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5625c1cf/ae1b328312a1448f87ece1282e228f65 [2018-11-07 21:00:36,225 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 21:00:36,227 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 21:00:36,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 21:00:36,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 21:00:36,236 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 21:00:36,237 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:00:36" (1/1) ... [2018-11-07 21:00:36,241 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60fab143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:00:36, skipping insertion in model container [2018-11-07 21:00:36,241 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:00:36" (1/1) ... [2018-11-07 21:00:36,253 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 21:00:36,374 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 21:00:37,481 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 21:00:37,486 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 21:00:37,895 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 21:00:37,921 INFO L193 MainTranslator]: Completed translation [2018-11-07 21:00:37,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:00:37 WrapperNode [2018-11-07 21:00:37,922 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 21:00:37,924 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 21:00:37,924 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 21:00:37,924 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 21:00:37,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:00:37" (1/1) ... [2018-11-07 21:00:38,193 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:00:37" (1/1) ... [2018-11-07 21:00:38,205 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 21:00:38,205 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 21:00:38,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 21:00:38,206 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 21:00:38,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:00:37" (1/1) ... [2018-11-07 21:00:38,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:00:37" (1/1) ... [2018-11-07 21:00:38,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:00:37" (1/1) ... [2018-11-07 21:00:38,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:00:37" (1/1) ... [2018-11-07 21:00:38,325 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:00:37" (1/1) ... [2018-11-07 21:00:38,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:00:37" (1/1) ... [2018-11-07 21:00:38,432 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:00:37" (1/1) ... [2018-11-07 21:00:38,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 21:00:38,468 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 21:00:38,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 21:00:38,469 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 21:00:38,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:00:37" (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 [2018-11-07 21:00:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 21:00:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 21:00:38,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 21:00:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 21:00:38,538 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 21:00:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 21:00:38,539 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 21:00:38,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 21:00:38,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 21:00:38,539 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 21:00:38,539 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 21:00:47,729 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 21:00:47,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:00:47 BoogieIcfgContainer [2018-11-07 21:00:47,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 21:00:47,731 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 21:00:47,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 21:00:47,735 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 21:00:47,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:00:36" (1/3) ... [2018-11-07 21:00:47,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b3381eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:00:47, skipping insertion in model container [2018-11-07 21:00:47,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:00:37" (2/3) ... [2018-11-07 21:00:47,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b3381eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:00:47, skipping insertion in model container [2018-11-07 21:00:47,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:00:47" (3/3) ... [2018-11-07 21:00:47,739 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label14_true-unreach-call.c [2018-11-07 21:00:47,750 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 21:00:47,760 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 21:00:47,779 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 21:00:47,824 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 21:00:47,825 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 21:00:47,825 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 21:00:47,825 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 21:00:47,825 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 21:00:47,825 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 21:00:47,825 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 21:00:47,826 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 21:00:47,862 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-11-07 21:00:47,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-11-07 21:00:47,872 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:00:47,874 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] [2018-11-07 21:00:47,876 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:00:47,882 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:00:47,883 INFO L82 PathProgramCache]: Analyzing trace with hash 104391076, now seen corresponding path program 1 times [2018-11-07 21:00:47,885 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:00:47,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:00:47,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:00:47,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:00:47,934 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:00:48,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:00:48,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:00:48,375 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:00:48,376 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 21:00:48,376 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:00:48,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 21:00:48,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 21:00:48,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 21:00:48,403 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-11-07 21:00:57,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:00:57,399 INFO L93 Difference]: Finished difference Result 2162 states and 4007 transitions. [2018-11-07 21:00:57,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 21:00:57,404 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2018-11-07 21:00:57,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:00:57,434 INFO L225 Difference]: With dead ends: 2162 [2018-11-07 21:00:57,434 INFO L226 Difference]: Without dead ends: 1552 [2018-11-07 21:00:57,447 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 [2018-11-07 21:00:57,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2018-11-07 21:00:57,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1525. [2018-11-07 21:00:57,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1525 states. [2018-11-07 21:00:57,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 2696 transitions. [2018-11-07 21:00:57,601 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 2696 transitions. Word has length 54 [2018-11-07 21:00:57,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:00:57,602 INFO L480 AbstractCegarLoop]: Abstraction has 1525 states and 2696 transitions. [2018-11-07 21:00:57,603 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 21:00:57,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 2696 transitions. [2018-11-07 21:00:57,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-11-07 21:00:57,620 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:00:57,620 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:00:57,621 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:00:57,621 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:00:57,621 INFO L82 PathProgramCache]: Analyzing trace with hash -733218574, now seen corresponding path program 1 times [2018-11-07 21:00:57,621 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:00:57,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:00:57,623 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:00:57,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:00:57,623 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:00:57,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:00:57,981 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:00:57,981 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:00:57,981 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 21:00:57,982 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:00:57,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 21:00:57,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 21:00:57,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-07 21:00:57,985 INFO L87 Difference]: Start difference. First operand 1525 states and 2696 transitions. Second operand 6 states. [2018-11-07 21:01:08,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:01:08,355 INFO L93 Difference]: Finished difference Result 5786 states and 10669 transitions. [2018-11-07 21:01:08,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:01:08,355 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2018-11-07 21:01:08,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:01:08,389 INFO L225 Difference]: With dead ends: 5786 [2018-11-07 21:01:08,390 INFO L226 Difference]: Without dead ends: 4267 [2018-11-07 21:01:08,410 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-07 21:01:08,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4267 states. [2018-11-07 21:01:08,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4267 to 4239. [2018-11-07 21:01:08,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4239 states. [2018-11-07 21:01:08,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4239 states to 4239 states and 6346 transitions. [2018-11-07 21:01:08,558 INFO L78 Accepts]: Start accepts. Automaton has 4239 states and 6346 transitions. Word has length 133 [2018-11-07 21:01:08,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:01:08,560 INFO L480 AbstractCegarLoop]: Abstraction has 4239 states and 6346 transitions. [2018-11-07 21:01:08,560 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 21:01:08,560 INFO L276 IsEmpty]: Start isEmpty. Operand 4239 states and 6346 transitions. [2018-11-07 21:01:08,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-11-07 21:01:08,568 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:01:08,568 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:01:08,568 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:01:08,572 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:01:08,572 INFO L82 PathProgramCache]: Analyzing trace with hash 9362786, now seen corresponding path program 1 times [2018-11-07 21:01:08,573 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:01:08,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:01:08,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:01:08,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:01:08,574 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:01:08,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:01:08,799 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:01:08,799 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:01:08,800 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 21:01:08,800 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:01:08,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 21:01:08,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 21:01:08,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 21:01:08,801 INFO L87 Difference]: Start difference. First operand 4239 states and 6346 transitions. Second operand 6 states. [2018-11-07 21:01:13,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:01:13,914 INFO L93 Difference]: Finished difference Result 12257 states and 20025 transitions. [2018-11-07 21:01:13,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:01:13,915 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2018-11-07 21:01:13,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:01:13,971 INFO L225 Difference]: With dead ends: 12257 [2018-11-07 21:01:13,971 INFO L226 Difference]: Without dead ends: 8024 [2018-11-07 21:01:13,998 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 [2018-11-07 21:01:14,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8024 states. [2018-11-07 21:01:14,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8024 to 7939. [2018-11-07 21:01:14,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7939 states. [2018-11-07 21:01:14,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7939 states to 7939 states and 11950 transitions. [2018-11-07 21:01:14,269 INFO L78 Accepts]: Start accepts. Automaton has 7939 states and 11950 transitions. Word has length 134 [2018-11-07 21:01:14,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:01:14,270 INFO L480 AbstractCegarLoop]: Abstraction has 7939 states and 11950 transitions. [2018-11-07 21:01:14,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 21:01:14,270 INFO L276 IsEmpty]: Start isEmpty. Operand 7939 states and 11950 transitions. [2018-11-07 21:01:14,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-11-07 21:01:14,276 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:01:14,276 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, 2, 2, 2, 2, 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] [2018-11-07 21:01:14,276 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:01:14,280 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:01:14,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1511832028, now seen corresponding path program 1 times [2018-11-07 21:01:14,280 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:01:14,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:01:14,281 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:01:14,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:01:14,282 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:01:14,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:01:14,620 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 21:01:14,842 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 95 proven. 5 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-11-07 21:01:14,843 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:01:14,843 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:01:14,844 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 209 with the following transitions: [2018-11-07 21:01:14,846 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1042], [1044], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1239], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 21:01:14,891 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:01:14,892 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:01:15,330 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:01:16,114 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 21:01:16,115 INFO L272 AbstractInterpreter]: Visited 88 different actions 250 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 21:01:16,164 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:01:16,165 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 21:01:16,166 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:01:16,166 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 21:01:16,181 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:01:16,182 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 21:01:16,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:01:16,291 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 21:01:16,617 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:01:16,618 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 21:01:16,935 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:01:16,956 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 21:01:16,956 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-07 21:01:16,956 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 21:01:16,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 21:01:16,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 21:01:16,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-07 21:01:16,958 INFO L87 Difference]: Start difference. First operand 7939 states and 11950 transitions. Second operand 9 states. [2018-11-07 21:01:24,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:01:24,188 INFO L93 Difference]: Finished difference Result 19972 states and 30375 transitions. [2018-11-07 21:01:24,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-07 21:01:24,189 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 208 [2018-11-07 21:01:24,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:01:24,295 INFO L225 Difference]: With dead ends: 19972 [2018-11-07 21:01:24,295 INFO L226 Difference]: Without dead ends: 12004 [2018-11-07 21:01:24,373 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 414 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2018-11-07 21:01:24,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12004 states. [2018-11-07 21:01:24,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12004 to 11979. [2018-11-07 21:01:24,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11979 states. [2018-11-07 21:01:24,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11979 states to 11979 states and 15403 transitions. [2018-11-07 21:01:24,755 INFO L78 Accepts]: Start accepts. Automaton has 11979 states and 15403 transitions. Word has length 208 [2018-11-07 21:01:24,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:01:24,756 INFO L480 AbstractCegarLoop]: Abstraction has 11979 states and 15403 transitions. [2018-11-07 21:01:24,756 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 21:01:24,756 INFO L276 IsEmpty]: Start isEmpty. Operand 11979 states and 15403 transitions. [2018-11-07 21:01:24,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-11-07 21:01:24,762 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:01:24,762 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 21:01:24,763 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:01:24,763 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:01:24,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1311071484, now seen corresponding path program 1 times [2018-11-07 21:01:24,763 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:01:24,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:01:24,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:01:24,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:01:24,765 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:01:24,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:01:25,138 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-11-07 21:01:25,139 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:01:25,139 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 21:01:25,139 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:01:25,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 21:01:25,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 21:01:25,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 21:01:25,141 INFO L87 Difference]: Start difference. First operand 11979 states and 15403 transitions. Second operand 4 states. [2018-11-07 21:01:31,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:01:31,064 INFO L93 Difference]: Finished difference Result 31979 states and 43968 transitions. [2018-11-07 21:01:31,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 21:01:31,067 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 221 [2018-11-07 21:01:31,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:01:31,132 INFO L225 Difference]: With dead ends: 31979 [2018-11-07 21:01:31,132 INFO L226 Difference]: Without dead ends: 15887 [2018-11-07 21:01:31,210 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 [2018-11-07 21:01:31,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15887 states. [2018-11-07 21:01:31,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15887 to 13191. [2018-11-07 21:01:31,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13191 states. [2018-11-07 21:01:31,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13191 states to 13191 states and 15980 transitions. [2018-11-07 21:01:31,539 INFO L78 Accepts]: Start accepts. Automaton has 13191 states and 15980 transitions. Word has length 221 [2018-11-07 21:01:31,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:01:31,539 INFO L480 AbstractCegarLoop]: Abstraction has 13191 states and 15980 transitions. [2018-11-07 21:01:31,540 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 21:01:31,540 INFO L276 IsEmpty]: Start isEmpty. Operand 13191 states and 15980 transitions. [2018-11-07 21:01:31,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-11-07 21:01:31,546 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:01:31,546 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 21:01:31,547 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:01:31,547 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:01:31,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1606849281, now seen corresponding path program 1 times [2018-11-07 21:01:31,547 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:01:31,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:01:31,548 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:01:31,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:01:31,548 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:01:31,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:01:32,160 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-07 21:01:32,518 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 95 proven. 59 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-11-07 21:01:32,519 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:01:32,519 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:01:32,519 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 285 with the following transitions: [2018-11-07 21:01:32,520 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1042], [1044], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1547], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 21:01:32,529 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:01:32,529 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:01:32,635 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:01:34,983 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 21:01:34,983 INFO L272 AbstractInterpreter]: Visited 151 different actions 886 times. Merged at 7 different actions 38 times. Widened at 1 different actions 1 times. Found 6 fixpoints after 2 different actions. Largest state had 26 variables. [2018-11-07 21:01:35,021 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:01:35,022 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 21:01:35,022 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:01:35,022 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 21:01:35,039 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:01:35,039 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 21:01:35,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:01:35,148 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 21:01:35,584 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-11-07 21:01:35,585 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 21:01:36,868 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 99 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:01:36,900 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 21:01:36,900 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 18 [2018-11-07 21:01:36,900 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 21:01:36,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-07 21:01:36,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-07 21:01:36,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2018-11-07 21:01:36,903 INFO L87 Difference]: Start difference. First operand 13191 states and 15980 transitions. Second operand 13 states. [2018-11-07 21:02:29,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:02:29,060 INFO L93 Difference]: Finished difference Result 85547 states and 108773 transitions. [2018-11-07 21:02:29,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-11-07 21:02:29,060 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 284 [2018-11-07 21:02:29,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:02:29,286 INFO L225 Difference]: With dead ends: 85547 [2018-11-07 21:02:29,286 INFO L226 Difference]: Without dead ends: 61032 [2018-11-07 21:02:29,378 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 692 GetRequests, 561 SyntacticMatches, 2 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6352 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=2495, Invalid=14535, Unknown=0, NotChecked=0, Total=17030 [2018-11-07 21:02:29,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61032 states. [2018-11-07 21:02:30,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61032 to 55538. [2018-11-07 21:02:30,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55538 states. [2018-11-07 21:02:30,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55538 states to 55538 states and 65504 transitions. [2018-11-07 21:02:30,655 INFO L78 Accepts]: Start accepts. Automaton has 55538 states and 65504 transitions. Word has length 284 [2018-11-07 21:02:30,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:02:30,656 INFO L480 AbstractCegarLoop]: Abstraction has 55538 states and 65504 transitions. [2018-11-07 21:02:30,656 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-07 21:02:30,656 INFO L276 IsEmpty]: Start isEmpty. Operand 55538 states and 65504 transitions. [2018-11-07 21:02:30,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-11-07 21:02:30,677 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:02:30,677 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, 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] [2018-11-07 21:02:30,677 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:02:30,678 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:02:30,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1354231450, now seen corresponding path program 1 times [2018-11-07 21:02:30,678 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:02:30,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:02:30,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:02:30,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:02:30,679 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:02:30,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:02:31,532 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 145 proven. 17 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2018-11-07 21:02:31,533 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:02:31,533 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:02:31,533 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 395 with the following transitions: [2018-11-07 21:02:31,533 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1042], [1044], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1547], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 21:02:31,539 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:02:31,539 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:02:31,625 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:02:34,035 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 21:02:34,035 INFO L272 AbstractInterpreter]: Visited 152 different actions 902 times. Merged at 8 different actions 48 times. Widened at 1 different actions 1 times. Found 9 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-07 21:02:34,074 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:02:34,074 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 21:02:34,074 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:02:34,074 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 21:02:34,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:02:34,087 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 21:02:34,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:02:34,202 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 21:02:34,653 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 377 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-11-07 21:02:34,653 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 21:02:35,141 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 21:02:36,093 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 147 proven. 275 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 21:02:36,113 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 21:02:36,113 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2018-11-07 21:02:36,114 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 21:02:36,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-07 21:02:36,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-07 21:02:36,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2018-11-07 21:02:36,115 INFO L87 Difference]: Start difference. First operand 55538 states and 65504 transitions. Second operand 15 states. [2018-11-07 21:03:02,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:03:02,133 INFO L93 Difference]: Finished difference Result 159558 states and 190157 transitions. [2018-11-07 21:03:02,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-11-07 21:03:02,134 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 394 [2018-11-07 21:03:02,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:03:02,423 INFO L225 Difference]: With dead ends: 159558 [2018-11-07 21:03:02,423 INFO L226 Difference]: Without dead ends: 97087 [2018-11-07 21:03:02,573 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 847 GetRequests, 780 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1183 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=891, Invalid=3531, Unknown=0, NotChecked=0, Total=4422 [2018-11-07 21:03:02,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97087 states. [2018-11-07 21:03:04,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97087 to 92521. [2018-11-07 21:03:04,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92521 states. [2018-11-07 21:03:04,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92521 states to 92521 states and 108314 transitions. [2018-11-07 21:03:04,691 INFO L78 Accepts]: Start accepts. Automaton has 92521 states and 108314 transitions. Word has length 394 [2018-11-07 21:03:04,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:03:04,692 INFO L480 AbstractCegarLoop]: Abstraction has 92521 states and 108314 transitions. [2018-11-07 21:03:04,692 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-07 21:03:04,692 INFO L276 IsEmpty]: Start isEmpty. Operand 92521 states and 108314 transitions. [2018-11-07 21:03:04,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2018-11-07 21:03:04,712 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:03:04,713 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 21:03:04,713 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:03:04,713 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:03:04,714 INFO L82 PathProgramCache]: Analyzing trace with hash 863350675, now seen corresponding path program 1 times [2018-11-07 21:03:04,714 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:03:04,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:03:04,715 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:03:04,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:03:04,715 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:03:04,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:03:05,212 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2018-11-07 21:03:05,212 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:03:05,212 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 21:03:05,212 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:03:05,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 21:03:05,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 21:03:05,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 21:03:05,213 INFO L87 Difference]: Start difference. First operand 92521 states and 108314 transitions. Second operand 4 states. [2018-11-07 21:03:11,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:03:11,579 INFO L93 Difference]: Finished difference Result 202196 states and 240309 transitions. [2018-11-07 21:03:11,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 21:03:11,580 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 455 [2018-11-07 21:03:11,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:03:11,919 INFO L225 Difference]: With dead ends: 202196 [2018-11-07 21:03:11,920 INFO L226 Difference]: Without dead ends: 116832 [2018-11-07 21:03:12,067 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 [2018-11-07 21:03:12,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116832 states. [2018-11-07 21:03:14,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116832 to 113352. [2018-11-07 21:03:14,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113352 states. [2018-11-07 21:03:14,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113352 states to 113352 states and 130155 transitions. [2018-11-07 21:03:14,693 INFO L78 Accepts]: Start accepts. Automaton has 113352 states and 130155 transitions. Word has length 455 [2018-11-07 21:03:14,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:03:14,694 INFO L480 AbstractCegarLoop]: Abstraction has 113352 states and 130155 transitions. [2018-11-07 21:03:14,694 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 21:03:14,694 INFO L276 IsEmpty]: Start isEmpty. Operand 113352 states and 130155 transitions. [2018-11-07 21:03:14,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2018-11-07 21:03:14,736 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:03:14,736 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 21:03:14,737 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:03:14,737 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:03:14,737 INFO L82 PathProgramCache]: Analyzing trace with hash 911489126, now seen corresponding path program 1 times [2018-11-07 21:03:14,737 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:03:14,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:03:14,738 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:03:14,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:03:14,739 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:03:14,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:03:15,441 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-07 21:03:15,948 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 453 proven. 121 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2018-11-07 21:03:15,948 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:03:15,948 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:03:15,948 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 543 with the following transitions: [2018-11-07 21:03:15,949 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1042], [1044], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1239], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1478], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1806], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 21:03:15,953 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:03:15,953 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:03:16,015 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:03:19,180 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 21:03:19,180 INFO L272 AbstractInterpreter]: Visited 202 different actions 1413 times. Merged at 9 different actions 67 times. Widened at 1 different actions 2 times. Found 19 fixpoints after 2 different actions. Largest state had 26 variables. [2018-11-07 21:03:19,186 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:03:19,186 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 21:03:19,186 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:03:19,186 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 21:03:19,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:03:19,194 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 21:03:19,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:03:19,343 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 21:03:19,663 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 197 proven. 0 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2018-11-07 21:03:19,664 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 21:03:19,846 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 197 proven. 0 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2018-11-07 21:03:19,866 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 21:03:19,867 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-11-07 21:03:19,867 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:03:19,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 21:03:19,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 21:03:19,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-11-07 21:03:19,868 INFO L87 Difference]: Start difference. First operand 113352 states and 130155 transitions. Second operand 3 states. [2018-11-07 21:03:22,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:03:22,375 INFO L93 Difference]: Finished difference Result 209374 states and 241911 transitions. [2018-11-07 21:03:22,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 21:03:22,376 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 542 [2018-11-07 21:03:22,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:03:22,673 INFO L225 Difference]: With dead ends: 209374 [2018-11-07 21:03:22,674 INFO L226 Difference]: Without dead ends: 107900 [2018-11-07 21:03:22,821 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1094 GetRequests, 1085 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-11-07 21:03:22,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107900 states. [2018-11-07 21:03:25,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107900 to 107549. [2018-11-07 21:03:25,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107549 states. [2018-11-07 21:03:25,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107549 states to 107549 states and 123491 transitions. [2018-11-07 21:03:25,168 INFO L78 Accepts]: Start accepts. Automaton has 107549 states and 123491 transitions. Word has length 542 [2018-11-07 21:03:25,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:03:25,170 INFO L480 AbstractCegarLoop]: Abstraction has 107549 states and 123491 transitions. [2018-11-07 21:03:25,170 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 21:03:25,170 INFO L276 IsEmpty]: Start isEmpty. Operand 107549 states and 123491 transitions. [2018-11-07 21:03:25,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2018-11-07 21:03:25,228 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:03:25,229 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:03:25,229 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:03:25,229 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:03:25,230 INFO L82 PathProgramCache]: Analyzing trace with hash 357807604, now seen corresponding path program 1 times [2018-11-07 21:03:25,230 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:03:25,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:03:25,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:03:25,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:03:25,231 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:03:25,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:03:25,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 770 proven. 6 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2018-11-07 21:03:25,841 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:03:25,841 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:03:25,841 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 620 with the following transitions: [2018-11-07 21:03:25,842 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1042], [1044], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1231], [1232], [1236], [1239], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1478], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1806], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 21:03:25,846 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:03:25,847 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:03:25,937 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:03:29,204 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 21:03:29,204 INFO L272 AbstractInterpreter]: Visited 203 different actions 1430 times. Merged at 10 different actions 78 times. Widened at 1 different actions 2 times. Found 25 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-07 21:03:29,243 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:03:29,244 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 21:03:29,244 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:03:29,244 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 21:03:29,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:03:29,256 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 21:03:29,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:03:29,426 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 21:03:33,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 770 proven. 6 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2018-11-07 21:03:33,001 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 21:03:33,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 770 proven. 76 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2018-11-07 21:03:33,466 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 21:03:33,467 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 13 [2018-11-07 21:03:33,467 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 21:03:33,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 21:03:33,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 21:03:33,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-11-07 21:03:33,468 INFO L87 Difference]: Start difference. First operand 107549 states and 123491 transitions. Second operand 8 states. [2018-11-07 21:03:45,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:03:45,345 INFO L93 Difference]: Finished difference Result 247295 states and 285615 transitions. [2018-11-07 21:03:45,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-07 21:03:45,346 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 619 [2018-11-07 21:03:45,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:03:45,708 INFO L225 Difference]: With dead ends: 247295 [2018-11-07 21:03:45,708 INFO L226 Difference]: Without dead ends: 151185 [2018-11-07 21:03:45,829 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1269 GetRequests, 1245 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=181, Invalid=419, Unknown=0, NotChecked=0, Total=600 [2018-11-07 21:03:45,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151185 states. [2018-11-07 21:03:48,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151185 to 142966. [2018-11-07 21:03:48,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142966 states. [2018-11-07 21:03:48,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142966 states to 142966 states and 163520 transitions. [2018-11-07 21:03:48,244 INFO L78 Accepts]: Start accepts. Automaton has 142966 states and 163520 transitions. Word has length 619 [2018-11-07 21:03:48,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:03:48,246 INFO L480 AbstractCegarLoop]: Abstraction has 142966 states and 163520 transitions. [2018-11-07 21:03:48,246 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 21:03:48,246 INFO L276 IsEmpty]: Start isEmpty. Operand 142966 states and 163520 transitions. [2018-11-07 21:03:48,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2018-11-07 21:03:48,287 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:03:48,288 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:03:48,288 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:03:48,288 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:03:48,289 INFO L82 PathProgramCache]: Analyzing trace with hash -2014214146, now seen corresponding path program 1 times [2018-11-07 21:03:48,289 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:03:48,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:03:48,290 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:03:48,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:03:48,290 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:03:48,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:03:48,844 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 21:03:50,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1101 backedges. 253 proven. 595 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2018-11-07 21:03:50,243 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:03:50,244 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:03:50,244 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 625 with the following transitions: [2018-11-07 21:03:50,244 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1042], [1044], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1231], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1266], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1478], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1806], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 21:03:50,247 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:03:50,248 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:03:50,301 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:03:52,813 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 21:03:52,814 INFO L272 AbstractInterpreter]: Visited 203 different actions 1431 times. Merged at 10 different actions 79 times. Widened at 1 different actions 2 times. Found 25 fixpoints after 2 different actions. Largest state had 26 variables. [2018-11-07 21:03:52,823 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:03:52,823 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 21:03:52,823 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:03:52,823 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 21:03:52,832 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:03:52,832 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 21:03:53,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:03:53,029 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 21:03:56,007 WARN L179 SmtUtils]: Spent 2.40 s on a formula simplification. DAG size of input: 433 DAG size of output: 35 [2018-11-07 21:04:00,096 WARN L179 SmtUtils]: Spent 3.91 s on a formula simplification that was a NOOP. DAG size: 34 [2018-11-07 21:04:08,465 WARN L179 SmtUtils]: Spent 6.03 s on a formula simplification. DAG size of input: 123 DAG size of output: 26 [2018-11-07 21:04:09,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1101 backedges. 507 proven. 45 refuted. 0 times theorem prover too weak. 549 trivial. 0 not checked. [2018-11-07 21:04:09,514 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 21:04:10,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1101 backedges. 550 proven. 2 refuted. 0 times theorem prover too weak. 549 trivial. 0 not checked. [2018-11-07 21:04:10,496 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 21:04:10,497 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6, 6] total 22 [2018-11-07 21:04:10,497 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 21:04:10,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 21:04:10,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 21:04:10,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=377, Unknown=1, NotChecked=0, Total=462 [2018-11-07 21:04:10,504 INFO L87 Difference]: Start difference. First operand 142966 states and 163520 transitions. Second operand 18 states. [2018-11-07 21:04:15,020 WARN L179 SmtUtils]: Spent 3.54 s on a formula simplification. DAG size of input: 71 DAG size of output: 62 Received shutdown request... [2018-11-07 21:04:19,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-07 21:04:19,317 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 21:04:19,323 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 21:04:19,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:04:19 BoogieIcfgContainer [2018-11-07 21:04:19,324 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 21:04:19,325 INFO L168 Benchmark]: Toolchain (without parser) took 223099.06 ms. Allocated memory was 1.5 GB in the beginning and 4.7 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -824.3 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-11-07 21:04:19,326 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. [2018-11-07 21:04:19,327 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1694.36 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-11-07 21:04:19,328 INFO L168 Benchmark]: Boogie Procedure Inliner took 281.61 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 794.8 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -976.9 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. [2018-11-07 21:04:19,333 INFO L168 Benchmark]: Boogie Preprocessor took 262.73 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2018-11-07 21:04:19,334 INFO L168 Benchmark]: RCFGBuilder took 9261.97 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 448.0 MB). Peak memory consumption was 448.0 MB. Max. memory is 7.1 GB. [2018-11-07 21:04:19,334 INFO L168 Benchmark]: TraceAbstraction took 211592.62 ms. Allocated memory was 2.3 GB in the beginning and 4.7 GB in the end (delta: 2.3 GB). Free memory was 1.8 GB in the beginning and 2.2 GB in the end (delta: -446.7 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-11-07 21:04:19,340 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 1694.36 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 281.61 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 794.8 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -976.9 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 262.73 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9261.97 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 448.0 MB). Peak memory consumption was 448.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211592.62 ms. Allocated memory was 2.3 GB in the beginning and 4.7 GB in the end (delta: 2.3 GB). Free memory was 1.8 GB in the beginning and 2.2 GB in the end (delta: -446.7 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: 149]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 149). Cancelled while BasicCegarLoop was constructing difference of abstraction (142966states) and FLOYD_HOARE automaton (currently 11 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (366 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 211.5s OverallTime, 11 OverallIterations, 6 TraceHistogramMax, 148.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2927 SDtfs, 40981 SDslu, 4326 SDs, 0 SdLazy, 67997 SolverSat, 10895 SolverUnsat, 343 SolverUnknown, 0 SolverNotchecked, 113.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5639 GetRequests, 5342 SyntacticMatches, 13 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7819 ImplicationChecksByTransitivity, 29.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=142966occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 15.5s AbstIntTime, 6 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 12.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 24971 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 31.7s InterpolantComputationTime, 6339 NumberOfCodeBlocks, 6339 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 8987 ConstructedInterpolants, 332 QuantifiedInterpolants, 19236143 SizeOfPredicates, 11 NumberOfNonLiveVariables, 4181 ConjunctsInSsa, 46 ConjunctsInUnsatCore, 23 InterpolantComputations, 7 PerfectInterpolantSequences, 10527/11825 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown