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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label50_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 17:15:01,338 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 17:15:01,341 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 17:15:01,353 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 17:15:01,354 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 17:15:01,355 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 17:15:01,356 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 17:15:01,358 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 17:15:01,360 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 17:15:01,361 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 17:15:01,362 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 17:15:01,362 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 17:15:01,363 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 17:15:01,364 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 17:15:01,366 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 17:15:01,367 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 17:15:01,368 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 17:15:01,370 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 17:15:01,372 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 17:15:01,374 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 17:15:01,376 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 17:15:01,377 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 17:15:01,380 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 17:15:01,380 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 17:15:01,380 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 17:15:01,381 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 17:15:01,382 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 17:15:01,383 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 17:15:01,384 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 17:15:01,386 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 17:15:01,386 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 17:15:01,387 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 17:15:01,387 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 17:15:01,387 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 17:15:01,388 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 17:15:01,389 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 17:15:01,390 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 17:15:01,406 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 17:15:01,406 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 17:15:01,407 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 17:15:01,407 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 17:15:01,408 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 17:15:01,408 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 17:15:01,408 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 17:15:01,408 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 17:15:01,409 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 17:15:01,409 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 17:15:01,409 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 17:15:01,409 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 17:15:01,410 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 17:15:01,410 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 17:15:01,410 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 17:15:01,411 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 17:15:01,412 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 17:15:01,412 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 17:15:01,412 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 17:15:01,412 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 17:15:01,412 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 17:15:01,413 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 17:15:01,413 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 17:15:01,413 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 17:15:01,413 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 17:15:01,414 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 17:15:01,415 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 17:15:01,416 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 17:15:01,416 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 17:15:01,416 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 17:15:01,416 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 17:15:01,416 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 17:15:01,417 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 17:15:01,417 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 17:15:01,470 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 17:15:01,483 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 17:15:01,487 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 17:15:01,489 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 17:15:01,490 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 17:15:01,490 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label50_false-unreach-call_false-termination.c [2018-10-24 17:15:01,551 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fa50cfd2c/1ea9c5428bb5413281b7f75ea224f54a/FLAG1f5b08407 [2018-10-24 17:15:02,175 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 17:15:02,176 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label50_false-unreach-call_false-termination.c [2018-10-24 17:15:02,189 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fa50cfd2c/1ea9c5428bb5413281b7f75ea224f54a/FLAG1f5b08407 [2018-10-24 17:15:02,217 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fa50cfd2c/1ea9c5428bb5413281b7f75ea224f54a [2018-10-24 17:15:02,232 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 17:15:02,234 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 17:15:02,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 17:15:02,236 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 17:15:02,243 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 17:15:02,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:02,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c0d0dff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02, skipping insertion in model container [2018-10-24 17:15:02,248 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:02,260 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 17:15:02,322 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 17:15:02,871 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:15:02,877 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 17:15:03,012 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:15:03,037 INFO L193 MainTranslator]: Completed translation [2018-10-24 17:15:03,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:03 WrapperNode [2018-10-24 17:15:03,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 17:15:03,039 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 17:15:03,039 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 17:15:03,040 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 17:15:03,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:03" (1/1) ... [2018-10-24 17:15:03,076 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:03" (1/1) ... [2018-10-24 17:15:03,242 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 17:15:03,243 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 17:15:03,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 17:15:03,243 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 17:15:03,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:03" (1/1) ... [2018-10-24 17:15:03,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:03" (1/1) ... [2018-10-24 17:15:03,259 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:03" (1/1) ... [2018-10-24 17:15:03,259 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:03" (1/1) ... [2018-10-24 17:15:03,284 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:03" (1/1) ... [2018-10-24 17:15:03,313 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:03" (1/1) ... [2018-10-24 17:15:03,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:03" (1/1) ... [2018-10-24 17:15:03,334 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 17:15:03,334 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 17:15:03,335 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 17:15:03,335 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 17:15:03,336 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:03" (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 [2018-10-24 17:15:03,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 17:15:03,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 17:15:03,412 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 17:15:03,413 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 17:15:03,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 17:15:03,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 17:15:03,414 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 17:15:03,414 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 17:15:06,835 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 17:15:06,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:15:06 BoogieIcfgContainer [2018-10-24 17:15:06,840 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 17:15:06,843 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 17:15:06,844 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 17:15:06,847 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 17:15:06,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 05:15:02" (1/3) ... [2018-10-24 17:15:06,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68023a7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:15:06, skipping insertion in model container [2018-10-24 17:15:06,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:03" (2/3) ... [2018-10-24 17:15:06,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68023a7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:15:06, skipping insertion in model container [2018-10-24 17:15:06,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:15:06" (3/3) ... [2018-10-24 17:15:06,854 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label50_false-unreach-call_false-termination.c [2018-10-24 17:15:06,867 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 17:15:06,878 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 17:15:06,898 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 17:15:06,949 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 17:15:06,950 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 17:15:06,950 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 17:15:06,950 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 17:15:06,950 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 17:15:06,951 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 17:15:06,951 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 17:15:06,951 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 17:15:06,988 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2018-10-24 17:15:06,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-24 17:15:06,999 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:15:07,000 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:15:07,003 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:15:07,009 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:15:07,009 INFO L82 PathProgramCache]: Analyzing trace with hash -323723712, now seen corresponding path program 1 times [2018-10-24 17:15:07,012 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:15:07,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:07,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:15:07,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:07,070 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:15:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:15:07,604 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 17:15:07,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:15:07,654 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:15:07,654 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:15:07,654 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:15:07,660 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 17:15:07,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 17:15:07,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 17:15:07,680 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 3 states. [2018-10-24 17:15:09,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:15:09,484 INFO L93 Difference]: Finished difference Result 550 states and 941 transitions. [2018-10-24 17:15:09,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 17:15:09,487 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2018-10-24 17:15:09,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:15:09,510 INFO L225 Difference]: With dead ends: 550 [2018-10-24 17:15:09,510 INFO L226 Difference]: Without dead ends: 340 [2018-10-24 17:15:09,519 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 17:15:09,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-10-24 17:15:09,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-10-24 17:15:09,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-10-24 17:15:09,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 562 transitions. [2018-10-24 17:15:09,587 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 562 transitions. Word has length 86 [2018-10-24 17:15:09,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:15:09,588 INFO L481 AbstractCegarLoop]: Abstraction has 340 states and 562 transitions. [2018-10-24 17:15:09,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 17:15:09,589 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 562 transitions. [2018-10-24 17:15:09,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-10-24 17:15:09,595 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:15:09,595 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:15:09,595 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:15:09,596 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:15:09,596 INFO L82 PathProgramCache]: Analyzing trace with hash 2026090207, now seen corresponding path program 1 times [2018-10-24 17:15:09,596 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:15:09,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:09,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:15:09,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:09,598 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:15:09,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:15:09,812 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:15:09,813 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:15:09,813 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 17:15:09,813 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:15:09,815 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 17:15:09,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 17:15:09,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 17:15:09,816 INFO L87 Difference]: Start difference. First operand 340 states and 562 transitions. Second operand 6 states. [2018-10-24 17:15:11,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:15:11,603 INFO L93 Difference]: Finished difference Result 888 states and 1491 transitions. [2018-10-24 17:15:11,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 17:15:11,606 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2018-10-24 17:15:11,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:15:11,613 INFO L225 Difference]: With dead ends: 888 [2018-10-24 17:15:11,613 INFO L226 Difference]: Without dead ends: 554 [2018-10-24 17:15:11,616 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 17:15:11,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2018-10-24 17:15:11,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 539. [2018-10-24 17:15:11,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2018-10-24 17:15:11,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 827 transitions. [2018-10-24 17:15:11,658 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 827 transitions. Word has length 97 [2018-10-24 17:15:11,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:15:11,658 INFO L481 AbstractCegarLoop]: Abstraction has 539 states and 827 transitions. [2018-10-24 17:15:11,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 17:15:11,659 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 827 transitions. [2018-10-24 17:15:11,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-24 17:15:11,664 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:15:11,665 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:15:11,665 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:15:11,665 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:15:11,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1280703949, now seen corresponding path program 1 times [2018-10-24 17:15:11,666 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:15:11,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:11,667 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:15:11,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:11,667 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:15:11,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:15:11,841 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:15:11,841 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:15:11,841 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:15:11,841 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:15:11,842 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 17:15:11,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 17:15:11,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 17:15:11,844 INFO L87 Difference]: Start difference. First operand 539 states and 827 transitions. Second operand 3 states. [2018-10-24 17:15:13,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:15:13,097 INFO L93 Difference]: Finished difference Result 1529 states and 2431 transitions. [2018-10-24 17:15:13,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 17:15:13,098 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2018-10-24 17:15:13,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:15:13,107 INFO L225 Difference]: With dead ends: 1529 [2018-10-24 17:15:13,107 INFO L226 Difference]: Without dead ends: 996 [2018-10-24 17:15:13,112 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 17:15:13,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2018-10-24 17:15:13,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 989. [2018-10-24 17:15:13,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 989 states. [2018-10-24 17:15:13,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1498 transitions. [2018-10-24 17:15:13,164 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1498 transitions. Word has length 98 [2018-10-24 17:15:13,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:15:13,167 INFO L481 AbstractCegarLoop]: Abstraction has 989 states and 1498 transitions. [2018-10-24 17:15:13,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 17:15:13,167 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1498 transitions. [2018-10-24 17:15:13,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-24 17:15:13,182 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:15:13,182 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:15:13,183 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:15:13,184 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:15:13,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1122680231, now seen corresponding path program 1 times [2018-10-24 17:15:13,184 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:15:13,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:13,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:15:13,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:13,185 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:15:13,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:15:13,496 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:15:13,496 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:15:13,496 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-24 17:15:13,496 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:15:13,497 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 17:15:13,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 17:15:13,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-24 17:15:13,497 INFO L87 Difference]: Start difference. First operand 989 states and 1498 transitions. Second operand 7 states. [2018-10-24 17:15:16,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:15:16,864 INFO L93 Difference]: Finished difference Result 2756 states and 4372 transitions. [2018-10-24 17:15:16,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 17:15:16,870 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2018-10-24 17:15:16,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:15:16,888 INFO L225 Difference]: With dead ends: 2756 [2018-10-24 17:15:16,888 INFO L226 Difference]: Without dead ends: 1773 [2018-10-24 17:15:16,896 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2018-10-24 17:15:16,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1773 states. [2018-10-24 17:15:16,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1773 to 1731. [2018-10-24 17:15:16,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1731 states. [2018-10-24 17:15:16,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2507 transitions. [2018-10-24 17:15:16,993 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2507 transitions. Word has length 104 [2018-10-24 17:15:16,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:15:16,993 INFO L481 AbstractCegarLoop]: Abstraction has 1731 states and 2507 transitions. [2018-10-24 17:15:16,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 17:15:16,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2507 transitions. [2018-10-24 17:15:16,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-24 17:15:16,999 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:15:16,999 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:15:16,999 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:15:16,999 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:15:17,000 INFO L82 PathProgramCache]: Analyzing trace with hash -879203622, now seen corresponding path program 1 times [2018-10-24 17:15:17,000 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:15:17,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:17,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:15:17,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:17,002 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:15:17,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:15:17,248 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:15:17,249 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:15:17,249 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 17:15:17,250 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 117 with the following transitions: [2018-10-24 17:15:17,252 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [17], [18], [22], [26], [30], [34], [38], [41], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [273], [281], [289], [297], [305], [313], [321], [325], [327], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-10-24 17:15:17,333 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 17:15:17,333 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 17:15:53,772 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 17:15:53,774 INFO L272 AbstractInterpreter]: Visited 90 different actions 155 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 42 variables. [2018-10-24 17:15:53,792 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:15:53,792 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 17:15:59,310 INFO L232 lantSequenceWeakener]: Weakened 83 states. On average, predicates are now at 80.48% of their original sizes. [2018-10-24 17:15:59,310 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 17:16:22,487 INFO L413 sIntCurrentIteration]: We have 115 unified AI predicates [2018-10-24 17:16:22,488 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 17:16:22,488 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:16:22,489 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-10-24 17:16:22,489 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:16:22,489 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-24 17:16:22,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-24 17:16:22,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2018-10-24 17:16:22,490 INFO L87 Difference]: Start difference. First operand 1731 states and 2507 transitions. Second operand 19 states. Received shutdown request... [2018-10-24 17:19:11,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-24 17:19:11,118 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 17:19:11,125 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 17:19:11,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 05:19:11 BoogieIcfgContainer [2018-10-24 17:19:11,125 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 17:19:11,126 INFO L168 Benchmark]: Toolchain (without parser) took 248893.37 ms. Allocated memory was 1.6 GB in the beginning and 3.7 GB in the end (delta: 2.1 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -624.4 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-24 17:19:11,128 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 17:19:11,128 INFO L168 Benchmark]: CACSL2BoogieTranslator took 803.30 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-24 17:19:11,129 INFO L168 Benchmark]: Boogie Procedure Inliner took 203.57 ms. Allocated memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: 767.0 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -854.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. [2018-10-24 17:19:11,130 INFO L168 Benchmark]: Boogie Preprocessor took 90.98 ms. Allocated memory is still 2.3 GB. Free memory is still 2.3 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 17:19:11,131 INFO L168 Benchmark]: RCFGBuilder took 3505.81 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 114.3 MB). Peak memory consumption was 114.3 MB. Max. memory is 7.1 GB. [2018-10-24 17:19:11,131 INFO L168 Benchmark]: TraceAbstraction took 244282.00 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.4 GB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 83.6 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-24 17:19:11,136 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 803.30 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 203.57 ms. Allocated memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: 767.0 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -854.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 90.98 ms. Allocated memory is still 2.3 GB. Free memory is still 2.3 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3505.81 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 114.3 MB). Peak memory consumption was 114.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 244282.00 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.4 GB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 83.6 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 413]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 413). Cancelled while BasicCegarLoop was constructing difference of abstraction (1731states) and FLOYD_HOARE automaton (currently 21 states, 19 states before enhancement),while ReachableStatesComputation was computing reachable states (363 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 208 locations, 1 error locations. TIMEOUT Result, 244.1s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 176.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 453 SDtfs, 2073 SDslu, 347 SDs, 0 SdLazy, 3401 SolverSat, 719 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 74.6s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 160 GetRequests, 107 SyntacticMatches, 4 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 41.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1731occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 36.5s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9923041963338889 AbsIntWeakeningRatio, 0.30434782608695654 AbsIntAvgWeakeningVarsNumRemoved, 938.4260869565218 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 64 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 501 NumberOfCodeBlocks, 501 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 496 ConstructedInterpolants, 0 QuantifiedInterpolants, 139978 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 66/68 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown