java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label41_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 07:37:10,182 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 07:37:10,184 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 07:37:10,197 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 07:37:10,198 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 07:37:10,199 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 07:37:10,200 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 07:37:10,202 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 07:37:10,204 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 07:37:10,205 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 07:37:10,205 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 07:37:10,206 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 07:37:10,207 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 07:37:10,208 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 07:37:10,209 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 07:37:10,211 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 07:37:10,214 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 07:37:10,219 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 07:37:10,224 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 07:37:10,227 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 07:37:10,228 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 07:37:10,231 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 07:37:10,236 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 07:37:10,236 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 07:37:10,236 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 07:37:10,239 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 07:37:10,240 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 07:37:10,241 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 07:37:10,245 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 07:37:10,246 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 07:37:10,247 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 07:37:10,247 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-27 07:37:10,252 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 07:37:10,279 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 07:37:10,280 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 07:37:10,280 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 07:37:10,281 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 07:37:10,281 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 07:37:10,281 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 07:37:10,282 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 07:37:10,282 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 07:37:10,282 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 07:37:10,282 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 07:37:10,282 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 07:37:10,283 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 07:37:10,283 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 07:37:10,283 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 07:37:10,285 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 07:37:10,285 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 07:37:10,285 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 07:37:10,285 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 07:37:10,286 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 07:37:10,286 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 07:37:10,286 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 07:37:10,286 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 07:37:10,286 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 07:37:10,287 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 07:37:10,287 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 07:37:10,287 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 07:37:10,287 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 07:37:10,287 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 07:37:10,288 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 07:37:10,288 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 07:37:10,288 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 07:37:10,288 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 07:37:10,288 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 07:37:10,289 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 07:37:10,289 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 07:37:10,289 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 07:37:10,343 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 07:37:10,361 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 07:37:10,365 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 07:37:10,367 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 07:37:10,368 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 07:37:10,369 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label41_true-unreach-call.c [2018-10-27 07:37:10,440 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9d4de4248/8a757cd903b540ed83ea8dda797d7fe4/FLAG563e15d41 [2018-10-27 07:37:11,068 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 07:37:11,070 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label41_true-unreach-call.c [2018-10-27 07:37:11,086 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9d4de4248/8a757cd903b540ed83ea8dda797d7fe4/FLAG563e15d41 [2018-10-27 07:37:11,104 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9d4de4248/8a757cd903b540ed83ea8dda797d7fe4 [2018-10-27 07:37:11,115 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 07:37:11,116 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 07:37:11,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 07:37:11,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 07:37:11,121 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 07:37:11,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:37:11" (1/1) ... [2018-10-27 07:37:11,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66c99c3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:37:11, skipping insertion in model container [2018-10-27 07:37:11,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:37:11" (1/1) ... [2018-10-27 07:37:11,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 07:37:11,220 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 07:37:11,994 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 07:37:11,999 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 07:37:12,212 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 07:37:12,233 INFO L193 MainTranslator]: Completed translation [2018-10-27 07:37:12,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:37:12 WrapperNode [2018-10-27 07:37:12,234 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 07:37:12,235 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 07:37:12,235 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 07:37:12,235 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 07:37:12,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:37:12" (1/1) ... [2018-10-27 07:37:12,290 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:37:12" (1/1) ... [2018-10-27 07:37:12,531 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 07:37:12,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 07:37:12,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 07:37:12,532 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 07:37:12,546 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:37:12" (1/1) ... [2018-10-27 07:37:12,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:37:12" (1/1) ... [2018-10-27 07:37:12,565 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:37:12" (1/1) ... [2018-10-27 07:37:12,565 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:37:12" (1/1) ... [2018-10-27 07:37:12,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:37:12" (1/1) ... [2018-10-27 07:37:12,647 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:37:12" (1/1) ... [2018-10-27 07:37:12,670 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:37:12" (1/1) ... [2018-10-27 07:37:12,683 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 07:37:12,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 07:37:12,683 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 07:37:12,684 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 07:37:12,685 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:37:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 07:37:12,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 07:37:12,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 07:37:12,760 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 07:37:12,760 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 07:37:12,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 07:37:12,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 07:37:12,761 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 07:37:12,761 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 07:37:18,189 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 07:37:18,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:37:18 BoogieIcfgContainer [2018-10-27 07:37:18,190 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 07:37:18,191 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 07:37:18,191 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 07:37:18,195 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 07:37:18,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:37:11" (1/3) ... [2018-10-27 07:37:18,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bc7ef6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:37:18, skipping insertion in model container [2018-10-27 07:37:18,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:37:12" (2/3) ... [2018-10-27 07:37:18,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bc7ef6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:37:18, skipping insertion in model container [2018-10-27 07:37:18,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:37:18" (3/3) ... [2018-10-27 07:37:18,199 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label41_true-unreach-call.c [2018-10-27 07:37:18,210 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 07:37:18,220 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 07:37:18,240 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 07:37:18,281 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 07:37:18,281 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 07:37:18,281 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 07:37:18,281 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 07:37:18,281 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 07:37:18,282 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 07:37:18,282 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 07:37:18,282 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 07:37:18,313 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-27 07:37:18,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-27 07:37:18,321 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:37:18,322 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] [2018-10-27 07:37:18,325 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:37:18,332 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:37:18,332 INFO L82 PathProgramCache]: Analyzing trace with hash -146636772, now seen corresponding path program 1 times [2018-10-27 07:37:18,335 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:37:18,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:37:18,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:37:18,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:37:18,392 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:37:18,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:37:18,814 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 07:37:18,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:37:18,900 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:37:18,900 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 07:37:18,901 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:37:18,908 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 07:37:18,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 07:37:18,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 07:37:18,932 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 3 states. [2018-10-27 07:37:21,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:37:21,288 INFO L93 Difference]: Finished difference Result 782 states and 1372 transitions. [2018-10-27 07:37:21,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 07:37:21,290 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2018-10-27 07:37:21,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:37:21,309 INFO L225 Difference]: With dead ends: 782 [2018-10-27 07:37:21,309 INFO L226 Difference]: Without dead ends: 487 [2018-10-27 07:37:21,318 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 07:37:21,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2018-10-27 07:37:21,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 482. [2018-10-27 07:37:21,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2018-10-27 07:37:21,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 843 transitions. [2018-10-27 07:37:21,405 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 843 transitions. Word has length 28 [2018-10-27 07:37:21,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:37:21,406 INFO L481 AbstractCegarLoop]: Abstraction has 482 states and 843 transitions. [2018-10-27 07:37:21,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 07:37:21,406 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 843 transitions. [2018-10-27 07:37:21,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-27 07:37:21,413 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:37:21,413 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 07:37:21,413 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:37:21,414 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:37:21,414 INFO L82 PathProgramCache]: Analyzing trace with hash -425752825, now seen corresponding path program 1 times [2018-10-27 07:37:21,414 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:37:21,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:37:21,416 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:37:21,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:37:21,416 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:37:21,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:37:21,937 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:37:21,937 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:37:21,938 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-27 07:37:21,938 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:37:21,940 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 07:37:21,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 07:37:21,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 07:37:21,941 INFO L87 Difference]: Start difference. First operand 482 states and 843 transitions. Second operand 7 states. [2018-10-27 07:37:28,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:37:28,589 INFO L93 Difference]: Finished difference Result 1760 states and 3239 transitions. [2018-10-27 07:37:28,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 07:37:28,591 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 103 [2018-10-27 07:37:28,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:37:28,610 INFO L225 Difference]: With dead ends: 1760 [2018-10-27 07:37:28,610 INFO L226 Difference]: Without dead ends: 1284 [2018-10-27 07:37:28,617 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-10-27 07:37:28,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2018-10-27 07:37:28,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1037. [2018-10-27 07:37:28,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1037 states. [2018-10-27 07:37:28,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1685 transitions. [2018-10-27 07:37:28,726 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1685 transitions. Word has length 103 [2018-10-27 07:37:28,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:37:28,727 INFO L481 AbstractCegarLoop]: Abstraction has 1037 states and 1685 transitions. [2018-10-27 07:37:28,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 07:37:28,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1685 transitions. [2018-10-27 07:37:28,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-10-27 07:37:28,735 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:37:28,735 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 07:37:28,735 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:37:28,736 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:37:28,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1279135784, now seen corresponding path program 1 times [2018-10-27 07:37:28,736 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:37:28,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:37:28,737 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:37:28,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:37:28,738 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:37:28,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:37:28,994 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 07:37:29,066 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 42 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 07:37:29,066 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:37:29,067 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:37:29,068 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 177 with the following transitions: [2018-10-27 07:37:29,070 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [125], [127], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [514], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 07:37:29,119 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:37:29,119 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:37:29,841 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 07:37:29,845 INFO L272 AbstractInterpreter]: Visited 80 different actions 80 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-10-27 07:37:29,887 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:37:29,887 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 07:37:30,354 INFO L227 lantSequenceWeakener]: Weakened 167 states. On average, predicates are now at 73.18% of their original sizes. [2018-10-27 07:37:30,354 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 07:37:30,518 INFO L415 sIntCurrentIteration]: We unified 175 AI predicates to 175 [2018-10-27 07:37:30,519 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 07:37:30,519 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 07:37:30,520 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-27 07:37:30,520 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:37:30,521 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:37:30,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:37:30,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:37:30,521 INFO L87 Difference]: Start difference. First operand 1037 states and 1685 transitions. Second operand 6 states. [2018-10-27 07:38:22,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:38:22,943 INFO L93 Difference]: Finished difference Result 2260 states and 3574 transitions. [2018-10-27 07:38:22,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 07:38:22,944 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 176 [2018-10-27 07:38:22,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:38:22,950 INFO L225 Difference]: With dead ends: 2260 [2018-10-27 07:38:22,951 INFO L226 Difference]: Without dead ends: 1229 [2018-10-27 07:38:22,954 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 176 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 07:38:22,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2018-10-27 07:38:22,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1227. [2018-10-27 07:38:22,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1227 states. [2018-10-27 07:38:22,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 1883 transitions. [2018-10-27 07:38:22,988 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 1883 transitions. Word has length 176 [2018-10-27 07:38:22,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:38:22,989 INFO L481 AbstractCegarLoop]: Abstraction has 1227 states and 1883 transitions. [2018-10-27 07:38:22,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:38:22,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 1883 transitions. [2018-10-27 07:38:22,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-10-27 07:38:22,993 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:38:22,993 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 07:38:22,994 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:38:22,994 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:38:22,994 INFO L82 PathProgramCache]: Analyzing trace with hash 239746622, now seen corresponding path program 1 times [2018-10-27 07:38:22,994 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:38:22,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:38:22,995 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:38:22,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:38:22,996 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:38:23,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:38:23,298 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-10-27 07:38:23,299 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:38:23,299 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:38:23,299 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 221 with the following transitions: [2018-10-27 07:38:23,300 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [125], [127], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [514], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 07:38:23,320 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:38:23,320 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:38:24,053 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 07:38:24,053 INFO L272 AbstractInterpreter]: Visited 126 different actions 375 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 28 variables. [2018-10-27 07:38:24,081 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:38:24,082 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 07:38:24,082 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:38:24,082 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 07:38:24,092 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:38:24,092 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 07:38:24,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:38:24,191 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 07:38:26,600 WARN L854 $PredicateComparison]: unable to prove that (or (exists ((v_~a23~0_478 Int)) (let ((.cse0 (mod (+ (div v_~a23~0_478 5) 1) 90))) (and (not (= (mod v_~a23~0_478 5) 0)) (< v_~a23~0_478 0) (<= c_~a23~0 (+ .cse0 49)) (= 0 .cse0) (<= |c_old(~a23~0)| v_~a23~0_478)))) (exists ((v_prenex_5 Int)) (let ((.cse1 (mod (div v_prenex_5 5) 90))) (and (<= 0 v_prenex_5) (= .cse1 0) (<= |c_old(~a23~0)| v_prenex_5) (<= c_~a23~0 (+ .cse1 49))))) (exists ((v_prenex_4 Int)) (let ((.cse3 (div v_prenex_4 5))) (let ((.cse2 (mod .cse3 90))) (and (not (= .cse2 0)) (= (mod v_prenex_4 5) 0) (<= (+ c_~a23~0 41) .cse2) (< .cse3 0) (<= |c_old(~a23~0)| v_prenex_4))))) (exists ((v_prenex_7 Int)) (let ((.cse5 (+ (div v_prenex_7 5) 1))) (let ((.cse4 (mod .cse5 90))) (and (< v_prenex_7 0) (not (= 0 .cse4)) (< .cse5 0) (<= |c_old(~a23~0)| v_prenex_7) (not (= (mod v_prenex_7 5) 0)) (<= (+ c_~a23~0 41) .cse4))))) (exists ((v_prenex_3 Int)) (let ((.cse6 (div v_prenex_3 5))) (and (<= c_~a23~0 (+ (mod .cse6 90) 49)) (= (mod v_prenex_3 5) 0) (<= 0 .cse6) (<= |c_old(~a23~0)| v_prenex_3)))) (exists ((v_prenex_1 Int)) (let ((.cse8 (div v_prenex_1 5))) (let ((.cse7 (mod .cse8 90))) (and (<= (+ c_~a23~0 41) .cse7) (< .cse8 0) (<= 0 v_prenex_1) (not (= .cse7 0)) (<= |c_old(~a23~0)| v_prenex_1))))) (exists ((v_prenex_2 Int)) (let ((.cse9 (div v_prenex_2 5))) (and (<= |c_old(~a23~0)| v_prenex_2) (<= 0 .cse9) (<= c_~a23~0 (+ (mod .cse9 90) 49)) (<= 0 v_prenex_2)))) (exists ((v_prenex_8 Int)) (let ((.cse10 (mod (div v_prenex_8 5) 90))) (and (<= |c_old(~a23~0)| v_prenex_8) (<= c_~a23~0 (+ .cse10 49)) (= .cse10 0) (= (mod v_prenex_8 5) 0)))) (exists ((v_prenex_6 Int)) (let ((.cse11 (+ (div v_prenex_6 5) 1))) (and (<= c_~a23~0 (+ (mod .cse11 90) 49)) (not (= (mod v_prenex_6 5) 0)) (< v_prenex_6 0) (<= |c_old(~a23~0)| v_prenex_6) (<= 0 .cse11))))) is different from true [2018-10-27 07:38:26,899 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 72 trivial. 2 not checked. [2018-10-27 07:38:26,900 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 07:38:27,567 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-10-27 07:38:27,603 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-27 07:38:27,603 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 6] total 8 [2018-10-27 07:38:27,603 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:38:27,605 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 07:38:27,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 07:38:27,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=30, Unknown=1, NotChecked=10, Total=56 [2018-10-27 07:38:27,606 INFO L87 Difference]: Start difference. First operand 1227 states and 1883 transitions. Second operand 3 states. [2018-10-27 07:38:30,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:38:30,302 INFO L93 Difference]: Finished difference Result 2987 states and 4933 transitions. [2018-10-27 07:38:30,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 07:38:30,303 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 220 [2018-10-27 07:38:30,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:38:30,317 INFO L225 Difference]: With dead ends: 2987 [2018-10-27 07:38:30,317 INFO L226 Difference]: Without dead ends: 1956 [2018-10-27 07:38:30,324 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 439 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=15, Invalid=30, Unknown=1, NotChecked=10, Total=56 [2018-10-27 07:38:30,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1956 states. [2018-10-27 07:38:30,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1956 to 1949. [2018-10-27 07:38:30,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1949 states. [2018-10-27 07:38:30,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1949 states to 1949 states and 3020 transitions. [2018-10-27 07:38:30,376 INFO L78 Accepts]: Start accepts. Automaton has 1949 states and 3020 transitions. Word has length 220 [2018-10-27 07:38:30,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:38:30,377 INFO L481 AbstractCegarLoop]: Abstraction has 1949 states and 3020 transitions. [2018-10-27 07:38:30,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 07:38:30,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1949 states and 3020 transitions. [2018-10-27 07:38:30,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-10-27 07:38:30,382 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:38:30,383 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 07:38:30,383 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:38:30,383 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:38:30,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1859385058, now seen corresponding path program 1 times [2018-10-27 07:38:30,384 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:38:30,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:38:30,385 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:38:30,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:38:30,385 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:38:30,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:38:30,721 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:38:30,722 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:38:30,722 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:38:30,722 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 237 with the following transitions: [2018-10-27 07:38:30,723 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [125], [127], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [578], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 07:38:30,738 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:38:30,739 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:38:31,340 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 07:38:31,340 INFO L272 AbstractInterpreter]: Visited 125 different actions 244 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-27 07:38:31,376 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:38:31,377 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 07:38:31,823 INFO L227 lantSequenceWeakener]: Weakened 233 states. On average, predicates are now at 75.06% of their original sizes. [2018-10-27 07:38:31,823 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 07:38:32,592 INFO L415 sIntCurrentIteration]: We unified 235 AI predicates to 235 [2018-10-27 07:38:32,593 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 07:38:32,594 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 07:38:32,595 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-10-27 07:38:32,596 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:38:32,597 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 07:38:32,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 07:38:32,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 07:38:32,598 INFO L87 Difference]: Start difference. First operand 1949 states and 3020 transitions. Second operand 10 states. [2018-10-27 07:40:13,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:40:13,325 INFO L93 Difference]: Finished difference Result 4094 states and 6590 transitions. [2018-10-27 07:40:13,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-27 07:40:13,325 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 236 [2018-10-27 07:40:13,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:40:13,339 INFO L225 Difference]: With dead ends: 4094 [2018-10-27 07:40:13,339 INFO L226 Difference]: Without dead ends: 2341 [2018-10-27 07:40:13,348 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 244 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2018-10-27 07:40:13,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2341 states. [2018-10-27 07:40:13,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2341 to 2334. [2018-10-27 07:40:13,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2334 states. [2018-10-27 07:40:13,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 3487 transitions. [2018-10-27 07:40:13,410 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 3487 transitions. Word has length 236 [2018-10-27 07:40:13,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:40:13,411 INFO L481 AbstractCegarLoop]: Abstraction has 2334 states and 3487 transitions. [2018-10-27 07:40:13,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 07:40:13,411 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 3487 transitions. [2018-10-27 07:40:13,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-10-27 07:40:13,417 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:40:13,417 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 07:40:13,418 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:40:13,418 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:40:13,418 INFO L82 PathProgramCache]: Analyzing trace with hash -867635988, now seen corresponding path program 1 times [2018-10-27 07:40:13,419 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:40:13,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:40:13,420 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:40:13,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:40:13,420 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:40:13,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:40:13,632 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-10-27 07:40:13,632 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:40:13,632 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 07:40:13,632 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:40:13,633 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 07:40:13,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 07:40:13,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 07:40:13,634 INFO L87 Difference]: Start difference. First operand 2334 states and 3487 transitions. Second operand 3 states. [2018-10-27 07:40:15,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:40:15,281 INFO L93 Difference]: Finished difference Result 5536 states and 8669 transitions. [2018-10-27 07:40:15,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 07:40:15,290 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 251 [2018-10-27 07:40:15,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:40:15,310 INFO L225 Difference]: With dead ends: 5536 [2018-10-27 07:40:15,311 INFO L226 Difference]: Without dead ends: 3397 [2018-10-27 07:40:15,325 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 07:40:15,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3397 states. [2018-10-27 07:40:15,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3397 to 3345. [2018-10-27 07:40:15,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3345 states. [2018-10-27 07:40:15,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3345 states to 3345 states and 5003 transitions. [2018-10-27 07:40:15,417 INFO L78 Accepts]: Start accepts. Automaton has 3345 states and 5003 transitions. Word has length 251 [2018-10-27 07:40:15,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:40:15,418 INFO L481 AbstractCegarLoop]: Abstraction has 3345 states and 5003 transitions. [2018-10-27 07:40:15,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 07:40:15,418 INFO L276 IsEmpty]: Start isEmpty. Operand 3345 states and 5003 transitions. [2018-10-27 07:40:15,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-10-27 07:40:15,436 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:40:15,437 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 07:40:15,437 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:40:15,438 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:40:15,438 INFO L82 PathProgramCache]: Analyzing trace with hash 399067847, now seen corresponding path program 1 times [2018-10-27 07:40:15,438 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:40:15,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:40:15,439 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:40:15,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:40:15,439 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:40:15,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:40:15,854 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 268 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-10-27 07:40:15,854 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:40:15,855 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:40:15,855 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 371 with the following transitions: [2018-10-27 07:40:15,856 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [125], [127], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [815], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 07:40:15,860 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:40:15,861 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:40:16,400 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 07:40:16,400 INFO L272 AbstractInterpreter]: Visited 147 different actions 581 times. Merged at 7 different actions 26 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 28 variables. [2018-10-27 07:40:16,405 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:40:16,405 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 07:40:16,813 INFO L227 lantSequenceWeakener]: Weakened 367 states. On average, predicates are now at 80.17% of their original sizes. [2018-10-27 07:40:16,813 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 07:40:16,964 INFO L415 sIntCurrentIteration]: We unified 369 AI predicates to 369 [2018-10-27 07:40:16,964 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 07:40:16,964 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 07:40:16,964 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2018-10-27 07:40:16,965 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:40:16,965 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 07:40:16,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 07:40:16,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-10-27 07:40:16,966 INFO L87 Difference]: Start difference. First operand 3345 states and 5003 transitions. Second operand 9 states. [2018-10-27 07:41:08,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:41:08,288 INFO L93 Difference]: Finished difference Result 8441 states and 13146 transitions. [2018-10-27 07:41:08,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-27 07:41:08,288 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 370 [2018-10-27 07:41:08,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:41:08,315 INFO L225 Difference]: With dead ends: 8441 [2018-10-27 07:41:08,316 INFO L226 Difference]: Without dead ends: 5677 [2018-10-27 07:41:08,334 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 376 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2018-10-27 07:41:08,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5677 states. [2018-10-27 07:41:08,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5677 to 5556. [2018-10-27 07:41:08,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5556 states. [2018-10-27 07:41:08,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5556 states to 5556 states and 8196 transitions. [2018-10-27 07:41:08,464 INFO L78 Accepts]: Start accepts. Automaton has 5556 states and 8196 transitions. Word has length 370 [2018-10-27 07:41:08,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:41:08,465 INFO L481 AbstractCegarLoop]: Abstraction has 5556 states and 8196 transitions. [2018-10-27 07:41:08,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 07:41:08,466 INFO L276 IsEmpty]: Start isEmpty. Operand 5556 states and 8196 transitions. [2018-10-27 07:41:08,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2018-10-27 07:41:08,494 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:41:08,494 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 07:41:08,495 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:41:08,495 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:41:08,495 INFO L82 PathProgramCache]: Analyzing trace with hash 134087738, now seen corresponding path program 1 times [2018-10-27 07:41:08,495 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:41:08,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:41:08,496 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:41:08,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:41:08,496 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:41:08,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:41:09,150 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 145 proven. 78 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2018-10-27 07:41:09,151 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:41:09,151 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:41:09,151 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 394 with the following transitions: [2018-10-27 07:41:09,152 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [125], [127], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [530], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [815], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [869], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 07:41:09,157 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:41:09,157 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:41:09,392 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 07:41:09,392 INFO L272 AbstractInterpreter]: Visited 157 different actions 308 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-27 07:41:09,427 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:41:09,427 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 07:41:09,781 INFO L227 lantSequenceWeakener]: Weakened 390 states. On average, predicates are now at 75.06% of their original sizes. [2018-10-27 07:41:09,781 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 07:41:09,864 INFO L415 sIntCurrentIteration]: We unified 392 AI predicates to 392 [2018-10-27 07:41:09,864 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 07:41:09,864 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 07:41:09,864 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-10-27 07:41:09,865 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:41:09,866 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 07:41:09,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 07:41:09,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 07:41:09,867 INFO L87 Difference]: Start difference. First operand 5556 states and 8196 transitions. Second operand 10 states. Received shutdown request... [2018-10-27 07:41:11,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 07:41:11,837 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 07:41:11,843 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 07:41:11,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 07:41:11 BoogieIcfgContainer [2018-10-27 07:41:11,843 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 07:41:11,844 INFO L168 Benchmark]: Toolchain (without parser) took 240728.99 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -604.7 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-27 07:41:11,846 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. [2018-10-27 07:41:11,846 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1117.22 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-10-27 07:41:11,847 INFO L168 Benchmark]: Boogie Procedure Inliner took 296.62 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 746.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -830.7 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2018-10-27 07:41:11,848 INFO L168 Benchmark]: Boogie Preprocessor took 151.15 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 07:41:11,849 INFO L168 Benchmark]: RCFGBuilder took 5506.61 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 199.2 MB). Peak memory consumption was 199.2 MB. Max. memory is 7.1 GB. [2018-10-27 07:41:11,849 INFO L168 Benchmark]: TraceAbstraction took 233652.71 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.0 GB in the end (delta: -26.0 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-27 07:41:11,854 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 1117.22 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 296.62 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 746.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -830.7 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 151.15 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 5506.61 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 199.2 MB). Peak memory consumption was 199.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 233652.71 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.0 GB in the end (delta: -26.0 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: 69]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 69). Cancelled while BasicCegarLoop was constructing difference of abstraction (5556states) and FLOYD_HOARE automaton (currently 10 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (137 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 233.5s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 220.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1850 SDtfs, 4995 SDslu, 1639 SDs, 0 SdLazy, 8287 SolverSat, 1761 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 183.4s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 1665 GetRequests, 1591 SyntacticMatches, 8 SemanticMatches, 66 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5556occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.0s AbstIntTime, 5 AbstIntIterations, 4 AbstIntStrong, 0.9974117718553523 AbsIntWeakeningRatio, 0.10589239965841162 AbsIntAvgWeakeningVarsNumRemoved, 17.365499573014517 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 7 MinimizatonAttempts, 441 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.7s InterpolantComputationTime, 1997 NumberOfCodeBlocks, 1997 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 2207 ConstructedInterpolants, 2 QuantifiedInterpolants, 1773127 SizeOfPredicates, 3 NumberOfNonLiveVariables, 423 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 1226/1466 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown