java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label41_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 02:59:52,168 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 02:59:52,175 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 02:59:52,189 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 02:59:52,189 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 02:59:52,190 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 02:59:52,192 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 02:59:52,193 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 02:59:52,196 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 02:59:52,197 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 02:59:52,198 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 02:59:52,198 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 02:59:52,199 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 02:59:52,203 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 02:59:52,208 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 02:59:52,209 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 02:59:52,210 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 02:59:52,212 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 02:59:52,214 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 02:59:52,215 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 02:59:52,216 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 02:59:52,217 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 02:59:52,219 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 02:59:52,220 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 02:59:52,220 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 02:59:52,221 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 02:59:52,222 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 02:59:52,222 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 02:59:52,223 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 02:59:52,224 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 02:59:52,224 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 02:59:52,225 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 02:59:52,225 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 02:59:52,225 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 02:59:52,226 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 02:59:52,227 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 02:59:52,227 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 02:59:52,246 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 02:59:52,246 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 02:59:52,247 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 02:59:52,247 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 02:59:52,247 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 02:59:52,248 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 02:59:52,248 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 02:59:52,248 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 02:59:52,248 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 02:59:52,248 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 02:59:52,249 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 02:59:52,249 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 02:59:52,250 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 02:59:52,250 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 02:59:52,250 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 02:59:52,250 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 02:59:52,250 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 02:59:52,251 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 02:59:52,251 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 02:59:52,251 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 02:59:52,251 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 02:59:52,252 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 02:59:52,252 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 02:59:52,252 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 02:59:52,252 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 02:59:52,252 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 02:59:52,253 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 02:59:52,253 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 02:59:52,253 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 02:59:52,253 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 02:59:52,253 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 02:59:52,254 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 02:59:52,254 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 02:59:52,254 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 02:59:52,301 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 02:59:52,315 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 02:59:52,320 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 02:59:52,322 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 02:59:52,322 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 02:59:52,324 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label41_true-unreach-call.c [2018-11-07 02:59:52,390 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/448f09423/2236a26f2ddc4154942dcf16f3ff0af3/FLAG590af86d2 [2018-11-07 02:59:53,030 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 02:59:53,032 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label41_true-unreach-call.c [2018-11-07 02:59:53,058 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/448f09423/2236a26f2ddc4154942dcf16f3ff0af3/FLAG590af86d2 [2018-11-07 02:59:53,080 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/448f09423/2236a26f2ddc4154942dcf16f3ff0af3 [2018-11-07 02:59:53,095 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 02:59:53,097 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 02:59:53,099 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 02:59:53,099 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 02:59:53,104 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 02:59:53,105 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:59:53" (1/1) ... [2018-11-07 02:59:53,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d010140 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:59:53, skipping insertion in model container [2018-11-07 02:59:53,108 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:59:53" (1/1) ... [2018-11-07 02:59:53,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 02:59:53,210 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 02:59:53,856 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 02:59:53,862 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 02:59:54,094 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 02:59:54,115 INFO L193 MainTranslator]: Completed translation [2018-11-07 02:59:54,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:59:54 WrapperNode [2018-11-07 02:59:54,116 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 02:59:54,117 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 02:59:54,117 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 02:59:54,117 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 02:59:54,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:59:54" (1/1) ... [2018-11-07 02:59:54,329 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:59:54" (1/1) ... [2018-11-07 02:59:54,337 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 02:59:54,338 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 02:59:54,338 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 02:59:54,338 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 02:59:54,353 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:59:54" (1/1) ... [2018-11-07 02:59:54,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:59:54" (1/1) ... [2018-11-07 02:59:54,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:59:54" (1/1) ... [2018-11-07 02:59:54,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:59:54" (1/1) ... [2018-11-07 02:59:54,426 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:59:54" (1/1) ... [2018-11-07 02:59:54,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:59:54" (1/1) ... [2018-11-07 02:59:54,455 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:59:54" (1/1) ... [2018-11-07 02:59:54,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 02:59:54,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 02:59:54,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 02:59:54,467 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 02:59:54,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:59:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 02:59:54,549 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 02:59:54,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 02:59:54,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 02:59:54,552 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 02:59:54,552 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 02:59:54,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 02:59:54,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 02:59:54,553 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 02:59:54,553 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 02:59:59,504 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 02:59:59,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:59:59 BoogieIcfgContainer [2018-11-07 02:59:59,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 02:59:59,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 02:59:59,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 02:59:59,510 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 02:59:59,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:59:53" (1/3) ... [2018-11-07 02:59:59,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75ec86c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:59:59, skipping insertion in model container [2018-11-07 02:59:59,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:59:54" (2/3) ... [2018-11-07 02:59:59,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75ec86c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:59:59, skipping insertion in model container [2018-11-07 02:59:59,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:59:59" (3/3) ... [2018-11-07 02:59:59,514 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label41_true-unreach-call.c [2018-11-07 02:59:59,525 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 02:59:59,535 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 02:59:59,553 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 02:59:59,594 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 02:59:59,595 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 02:59:59,595 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 02:59:59,595 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 02:59:59,595 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 02:59:59,596 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 02:59:59,596 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 02:59:59,596 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 02:59:59,626 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-07 02:59:59,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-07 02:59:59,634 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:59:59,635 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] [2018-11-07 02:59:59,638 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:59:59,644 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:59:59,645 INFO L82 PathProgramCache]: Analyzing trace with hash -146636772, now seen corresponding path program 1 times [2018-11-07 02:59:59,647 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:59:59,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:59:59,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:59:59,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:59:59,706 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:59:59,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:00:00,162 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 03:00:00,258 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 03:00:00,261 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:00:00,261 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 03:00:00,261 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:00:00,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 03:00:00,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 03:00:00,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 03:00:00,291 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 3 states. [2018-11-07 03:00:02,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:00:02,719 INFO L93 Difference]: Finished difference Result 782 states and 1372 transitions. [2018-11-07 03:00:02,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 03:00:02,721 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2018-11-07 03:00:02,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:00:02,740 INFO L225 Difference]: With dead ends: 782 [2018-11-07 03:00:02,740 INFO L226 Difference]: Without dead ends: 487 [2018-11-07 03:00:02,748 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 03:00:02,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2018-11-07 03:00:02,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 482. [2018-11-07 03:00:02,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2018-11-07 03:00:02,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 843 transitions. [2018-11-07 03:00:02,841 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 843 transitions. Word has length 28 [2018-11-07 03:00:02,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:00:02,841 INFO L480 AbstractCegarLoop]: Abstraction has 482 states and 843 transitions. [2018-11-07 03:00:02,841 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 03:00:02,842 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 843 transitions. [2018-11-07 03:00:02,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-11-07 03:00:02,848 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:00:02,848 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] [2018-11-07 03:00:02,849 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:00:02,849 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:00:02,849 INFO L82 PathProgramCache]: Analyzing trace with hash -425752825, now seen corresponding path program 1 times [2018-11-07 03:00:02,850 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:00:02,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:00:02,851 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:00:02,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:00:02,851 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:00:02,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:00:03,403 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 03:00:03,855 WARN L179 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2018-11-07 03:00:03,928 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:00:03,928 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:00:03,929 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-07 03:00:03,929 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:00:03,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 03:00:03,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 03:00:03,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 03:00:03,932 INFO L87 Difference]: Start difference. First operand 482 states and 843 transitions. Second operand 7 states. [2018-11-07 03:00:04,586 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-11-07 03:00:10,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:00:10,133 INFO L93 Difference]: Finished difference Result 1759 states and 3238 transitions. [2018-11-07 03:00:10,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 03:00:10,136 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 103 [2018-11-07 03:00:10,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:00:10,164 INFO L225 Difference]: With dead ends: 1759 [2018-11-07 03:00:10,164 INFO L226 Difference]: Without dead ends: 1283 [2018-11-07 03:00:10,173 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-11-07 03:00:10,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2018-11-07 03:00:10,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1037. [2018-11-07 03:00:10,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1037 states. [2018-11-07 03:00:10,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1685 transitions. [2018-11-07 03:00:10,285 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1685 transitions. Word has length 103 [2018-11-07 03:00:10,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:00:10,286 INFO L480 AbstractCegarLoop]: Abstraction has 1037 states and 1685 transitions. [2018-11-07 03:00:10,286 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 03:00:10,286 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1685 transitions. [2018-11-07 03:00:10,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-11-07 03:00:10,298 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:00:10,299 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] [2018-11-07 03:00:10,299 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:00:10,299 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:00:10,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1279135784, now seen corresponding path program 1 times [2018-11-07 03:00:10,300 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:00:10,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:00:10,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:00:10,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:00:10,303 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:00:10,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:00:10,687 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 03:00:10,744 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 42 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 03:00:10,744 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:00:10,744 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:00:10,747 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 177 with the following transitions: [2018-11-07 03:00:10,749 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] [2018-11-07 03:00:10,828 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:00:10,828 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:00:12,944 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:00:13,246 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:00:13,248 INFO L272 AbstractInterpreter]: Visited 80 different actions 80 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-11-07 03:00:13,261 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:00:13,261 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:00:15,464 INFO L227 lantSequenceWeakener]: Weakened 168 states. On average, predicates are now at 73.29% of their original sizes. [2018-11-07 03:00:15,465 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:00:15,932 INFO L415 sIntCurrentIteration]: We unified 175 AI predicates to 175 [2018-11-07 03:00:15,932 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:00:15,933 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:00:15,933 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 03:00:15,933 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:00:15,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 03:00:15,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 03:00:15,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 03:00:15,937 INFO L87 Difference]: Start difference. First operand 1037 states and 1685 transitions. Second operand 7 states. [2018-11-07 03:01:09,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:01:09,654 INFO L93 Difference]: Finished difference Result 2260 states and 3574 transitions. [2018-11-07 03:01:09,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:01:09,654 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2018-11-07 03:01:09,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:01:09,661 INFO L225 Difference]: With dead ends: 2260 [2018-11-07 03:01:09,661 INFO L226 Difference]: Without dead ends: 1229 [2018-11-07 03:01:09,665 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 176 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 03:01:09,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2018-11-07 03:01:09,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1227. [2018-11-07 03:01:09,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1227 states. [2018-11-07 03:01:09,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 1883 transitions. [2018-11-07 03:01:09,704 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 1883 transitions. Word has length 176 [2018-11-07 03:01:09,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:01:09,704 INFO L480 AbstractCegarLoop]: Abstraction has 1227 states and 1883 transitions. [2018-11-07 03:01:09,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 03:01:09,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 1883 transitions. [2018-11-07 03:01:09,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-11-07 03:01:09,709 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:01:09,709 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] [2018-11-07 03:01:09,709 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:01:09,710 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:01:09,710 INFO L82 PathProgramCache]: Analyzing trace with hash 239746622, now seen corresponding path program 1 times [2018-11-07 03:01:09,710 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:01:09,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:01:09,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:01:09,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:01:09,712 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:01:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:01:09,986 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-07 03:01:09,986 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:01:09,986 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:01:09,987 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 221 with the following transitions: [2018-11-07 03:01:09,987 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] [2018-11-07 03:01:09,994 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:01:09,994 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:01:13,206 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:01:21,856 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:01:21,857 INFO L272 AbstractInterpreter]: Visited 125 different actions 362 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-07 03:01:21,865 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:01:21,865 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:01:23,870 INFO L227 lantSequenceWeakener]: Weakened 132 states. On average, predicates are now at 73.89% of their original sizes. [2018-11-07 03:01:23,871 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:01:31,012 INFO L415 sIntCurrentIteration]: We unified 219 AI predicates to 219 [2018-11-07 03:01:31,012 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:01:31,012 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:01:31,012 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-11-07 03:01:31,012 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:01:31,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-07 03:01:31,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-07 03:01:31,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2018-11-07 03:01:31,014 INFO L87 Difference]: Start difference. First operand 1227 states and 1883 transitions. Second operand 19 states. [2018-11-07 03:03:26,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:03:26,585 INFO L93 Difference]: Finished difference Result 2456 states and 3936 transitions. [2018-11-07 03:03:26,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-07 03:03:26,586 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 220 [2018-11-07 03:03:26,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:03:26,594 INFO L225 Difference]: With dead ends: 2456 [2018-11-07 03:03:26,595 INFO L226 Difference]: Without dead ends: 1425 [2018-11-07 03:03:26,599 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 232 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=192, Invalid=800, Unknown=0, NotChecked=0, Total=992 [2018-11-07 03:03:26,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1425 states. [2018-11-07 03:03:26,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1425 to 1418. [2018-11-07 03:03:26,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1418 states. [2018-11-07 03:03:26,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 2090 transitions. [2018-11-07 03:03:26,700 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 2090 transitions. Word has length 220 [2018-11-07 03:03:26,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:03:26,701 INFO L480 AbstractCegarLoop]: Abstraction has 1418 states and 2090 transitions. [2018-11-07 03:03:26,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-07 03:03:26,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 2090 transitions. [2018-11-07 03:03:26,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-11-07 03:03:26,706 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:03:26,706 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:03:26,707 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:03:26,707 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:03:26,707 INFO L82 PathProgramCache]: Analyzing trace with hash 990984458, now seen corresponding path program 1 times [2018-11-07 03:03:26,707 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:03:26,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:03:26,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:03:26,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:03:26,709 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:03:26,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:03:27,069 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-11-07 03:03:27,069 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:03:27,070 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 03:03:27,070 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:03:27,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 03:03:27,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 03:03:27,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:03:27,071 INFO L87 Difference]: Start difference. First operand 1418 states and 2090 transitions. Second operand 4 states. [2018-11-07 03:03:29,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:03:29,296 INFO L93 Difference]: Finished difference Result 3943 states and 6557 transitions. [2018-11-07 03:03:29,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 03:03:29,296 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 230 [2018-11-07 03:03:29,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:03:29,313 INFO L225 Difference]: With dead ends: 3943 [2018-11-07 03:03:29,313 INFO L226 Difference]: Without dead ends: 2912 [2018-11-07 03:03:29,322 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 03:03:29,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2912 states. [2018-11-07 03:03:29,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2912 to 2896. [2018-11-07 03:03:29,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2896 states. [2018-11-07 03:03:29,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2896 states to 2896 states and 4414 transitions. [2018-11-07 03:03:29,464 INFO L78 Accepts]: Start accepts. Automaton has 2896 states and 4414 transitions. Word has length 230 [2018-11-07 03:03:29,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:03:29,465 INFO L480 AbstractCegarLoop]: Abstraction has 2896 states and 4414 transitions. [2018-11-07 03:03:29,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 03:03:29,465 INFO L276 IsEmpty]: Start isEmpty. Operand 2896 states and 4414 transitions. [2018-11-07 03:03:29,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-11-07 03:03:29,471 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:03:29,471 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] [2018-11-07 03:03:29,472 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:03:29,472 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:03:29,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1760436718, now seen corresponding path program 1 times [2018-11-07 03:03:29,472 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:03:29,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:03:29,473 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:03:29,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:03:29,474 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:03:29,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:03:29,921 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:03:29,921 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:03:29,921 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:03:29,922 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 247 with the following transitions: [2018-11-07 03:03:29,922 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], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 03:03:29,928 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:03:29,929 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:03:33,254 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 03:03:41,997 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-07 03:03:41,997 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-07 03:03:41,998 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 03:03:41,998 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:03:41,999 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 03:03:42,008 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:03:42,008 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 03:03:42,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:03:42,119 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 03:03:42,158 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-07 03:03:42,359 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 03:03:42,360 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 03:03:42,364 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 03:03:42,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 03:03:42 BoogieIcfgContainer [2018-11-07 03:03:42,365 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 03:03:42,365 INFO L168 Benchmark]: Toolchain (without parser) took 229269.63 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-11-07 03:03:42,367 INFO L168 Benchmark]: CDTParser took 0.24 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 03:03:42,367 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1017.75 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: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. [2018-11-07 03:03:42,368 INFO L168 Benchmark]: Boogie Procedure Inliner took 220.55 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 781.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -878.7 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2018-11-07 03:03:42,369 INFO L168 Benchmark]: Boogie Preprocessor took 129.02 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 03:03:42,370 INFO L168 Benchmark]: RCFGBuilder took 5038.15 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 177.2 MB). Peak memory consumption was 177.2 MB. Max. memory is 7.1 GB. [2018-11-07 03:03:42,370 INFO L168 Benchmark]: TraceAbstraction took 222858.67 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 2.1 GB in the beginning and 2.8 GB in the end (delta: -689.4 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-11-07 03:03:42,375 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 1017.75 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: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 220.55 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 781.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -878.7 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.02 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 5038.15 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 177.2 MB). Peak memory consumption was 177.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 222858.67 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 2.1 GB in the beginning and 2.8 GB in the end (delta: -689.4 MB). Peak memory consumption was 1.0 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 analyzing trace of length 247 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 222.7s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 180.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1348 SDtfs, 3675 SDslu, 843 SDs, 0 SdLazy, 6953 SolverSat, 1123 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 89.5s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 431 GetRequests, 380 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 14.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2896occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 26.4s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.9948835710257035 AbsIntWeakeningRatio, 0.14213197969543148 AbsIntAvgWeakeningVarsNumRemoved, 1167.951776649746 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 276 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 757 NumberOfCodeBlocks, 757 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 752 ConstructedInterpolants, 0 QuantifiedInterpolants, 466955 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 267/380 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown