java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label20_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 17:43:46,356 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 17:43:46,358 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 17:43:46,371 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 17:43:46,372 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 17:43:46,373 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 17:43:46,375 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 17:43:46,377 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 17:43:46,381 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 17:43:46,382 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 17:43:46,384 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 17:43:46,384 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 17:43:46,385 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 17:43:46,387 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 17:43:46,388 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 17:43:46,389 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 17:43:46,396 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 17:43:46,398 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 17:43:46,403 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 17:43:46,405 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 17:43:46,406 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 17:43:46,407 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 17:43:46,409 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 17:43:46,409 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 17:43:46,409 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 17:43:46,410 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 17:43:46,411 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 17:43:46,412 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 17:43:46,412 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 17:43:46,413 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 17:43:46,414 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 17:43:46,414 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 17:43:46,415 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 17:43:46,415 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 17:43:46,416 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 17:43:46,416 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 17:43:46,417 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 17:43:46,433 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 17:43:46,433 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 17:43:46,434 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 17:43:46,434 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 17:43:46,434 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 17:43:46,434 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 17:43:46,434 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 17:43:46,435 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 17:43:46,435 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 17:43:46,435 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 17:43:46,435 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 17:43:46,435 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 17:43:46,436 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 17:43:46,436 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 17:43:46,436 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 17:43:46,437 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 17:43:46,437 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 17:43:46,437 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 17:43:46,437 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 17:43:46,437 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 17:43:46,438 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 17:43:46,438 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 17:43:46,438 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 17:43:46,438 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 17:43:46,438 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 17:43:46,439 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 17:43:46,439 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 17:43:46,439 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 17:43:46,439 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 17:43:46,439 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 17:43:46,440 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 17:43:46,440 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 17:43:46,440 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 17:43:46,440 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 17:43:46,440 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 17:43:46,482 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 17:43:46,495 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 17:43:46,498 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 17:43:46,499 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 17:43:46,499 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 17:43:46,500 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label20_false-unreach-call.c [2018-11-07 17:43:46,561 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24826b0b4/e8ca07778b0b48afb7940cb20e85e061/FLAGd649030b4 [2018-11-07 17:43:47,170 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 17:43:47,170 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label20_false-unreach-call.c [2018-11-07 17:43:47,185 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24826b0b4/e8ca07778b0b48afb7940cb20e85e061/FLAGd649030b4 [2018-11-07 17:43:47,203 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24826b0b4/e8ca07778b0b48afb7940cb20e85e061 [2018-11-07 17:43:47,215 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 17:43:47,217 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 17:43:47,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 17:43:47,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 17:43:47,222 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 17:43:47,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:43:47" (1/1) ... [2018-11-07 17:43:47,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@567b4d96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:43:47, skipping insertion in model container [2018-11-07 17:43:47,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:43:47" (1/1) ... [2018-11-07 17:43:47,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 17:43:47,313 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 17:43:47,901 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 17:43:47,908 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 17:43:48,105 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 17:43:48,127 INFO L193 MainTranslator]: Completed translation [2018-11-07 17:43:48,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:43:48 WrapperNode [2018-11-07 17:43:48,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 17:43:48,128 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 17:43:48,129 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 17:43:48,129 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 17:43:48,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:43:48" (1/1) ... [2018-11-07 17:43:48,292 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:43:48" (1/1) ... [2018-11-07 17:43:48,309 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 17:43:48,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 17:43:48,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 17:43:48,309 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 17:43:48,323 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:43:48" (1/1) ... [2018-11-07 17:43:48,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:43:48" (1/1) ... [2018-11-07 17:43:48,335 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:43:48" (1/1) ... [2018-11-07 17:43:48,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:43:48" (1/1) ... [2018-11-07 17:43:48,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:43:48" (1/1) ... [2018-11-07 17:43:48,406 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:43:48" (1/1) ... [2018-11-07 17:43:48,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:43:48" (1/1) ... [2018-11-07 17:43:48,424 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 17:43:48,424 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 17:43:48,425 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 17:43:48,425 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 17:43:48,426 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:43:48" (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 17:43:48,498 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 17:43:48,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 17:43:48,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 17:43:48,500 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 17:43:48,500 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 17:43:48,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 17:43:48,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 17:43:48,500 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 17:43:48,501 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 17:43:52,936 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 17:43:52,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:43:52 BoogieIcfgContainer [2018-11-07 17:43:52,937 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 17:43:52,938 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 17:43:52,938 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 17:43:52,942 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 17:43:52,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:43:47" (1/3) ... [2018-11-07 17:43:52,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fdd996b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:43:52, skipping insertion in model container [2018-11-07 17:43:52,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:43:48" (2/3) ... [2018-11-07 17:43:52,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fdd996b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:43:52, skipping insertion in model container [2018-11-07 17:43:52,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:43:52" (3/3) ... [2018-11-07 17:43:52,946 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label20_false-unreach-call.c [2018-11-07 17:43:52,955 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 17:43:52,963 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 17:43:52,977 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 17:43:53,016 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 17:43:53,016 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 17:43:53,016 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 17:43:53,016 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 17:43:53,016 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 17:43:53,017 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 17:43:53,017 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 17:43:53,017 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 17:43:53,046 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-07 17:43:53,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-07 17:43:53,053 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:43:53,054 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 17:43:53,057 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:43:53,063 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:43:53,063 INFO L82 PathProgramCache]: Analyzing trace with hash -562401748, now seen corresponding path program 1 times [2018-11-07 17:43:53,065 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:43:53,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:43:53,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:43:53,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:43:53,119 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:43:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:43:53,451 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 17:43:53,453 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 17:43:53,453 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 17:43:53,453 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:43:53,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 17:43:53,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 17:43:53,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 17:43:53,472 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-11-07 17:43:56,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:43:56,719 INFO L93 Difference]: Finished difference Result 982 states and 1758 transitions. [2018-11-07 17:43:56,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 17:43:56,723 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-11-07 17:43:56,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:43:56,745 INFO L225 Difference]: With dead ends: 982 [2018-11-07 17:43:56,746 INFO L226 Difference]: Without dead ends: 683 [2018-11-07 17:43:56,755 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 17:43:56,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2018-11-07 17:43:56,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2018-11-07 17:43:56,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2018-11-07 17:43:56,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1005 transitions. [2018-11-07 17:43:56,852 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1005 transitions. Word has length 16 [2018-11-07 17:43:56,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:43:56,852 INFO L480 AbstractCegarLoop]: Abstraction has 683 states and 1005 transitions. [2018-11-07 17:43:56,852 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 17:43:56,853 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1005 transitions. [2018-11-07 17:43:56,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-11-07 17:43:56,857 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:43:56,858 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] [2018-11-07 17:43:56,858 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:43:56,858 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:43:56,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1344219984, now seen corresponding path program 1 times [2018-11-07 17:43:56,859 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:43:56,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:43:56,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:43:56,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:43:56,860 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:43:56,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:43:57,175 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 17:43:57,176 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 17:43:57,176 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 17:43:57,176 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:43:57,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 17:43:57,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 17:43:57,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 17:43:57,181 INFO L87 Difference]: Start difference. First operand 683 states and 1005 transitions. Second operand 4 states. [2018-11-07 17:44:01,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:44:01,095 INFO L93 Difference]: Finished difference Result 2516 states and 3860 transitions. [2018-11-07 17:44:01,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 17:44:01,103 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2018-11-07 17:44:01,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:44:01,122 INFO L225 Difference]: With dead ends: 2516 [2018-11-07 17:44:01,122 INFO L226 Difference]: Without dead ends: 1839 [2018-11-07 17:44:01,128 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 17:44:01,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1839 states. [2018-11-07 17:44:01,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 1821. [2018-11-07 17:44:01,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1821 states. [2018-11-07 17:44:01,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 2605 transitions. [2018-11-07 17:44:01,235 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 2605 transitions. Word has length 90 [2018-11-07 17:44:01,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:44:01,236 INFO L480 AbstractCegarLoop]: Abstraction has 1821 states and 2605 transitions. [2018-11-07 17:44:01,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 17:44:01,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 2605 transitions. [2018-11-07 17:44:01,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-11-07 17:44:01,248 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:44:01,248 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 17:44:01,250 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:44:01,250 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:44:01,251 INFO L82 PathProgramCache]: Analyzing trace with hash 2138652655, now seen corresponding path program 1 times [2018-11-07 17:44:01,251 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:44:01,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:44:01,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:44:01,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:44:01,252 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:44:01,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:44:01,929 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 17:44:02,166 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2018-11-07 17:44:02,243 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 17:44:02,243 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 17:44:02,243 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-07 17:44:02,243 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:44:02,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 17:44:02,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 17:44:02,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 17:44:02,245 INFO L87 Difference]: Start difference. First operand 1821 states and 2605 transitions. Second operand 7 states. [2018-11-07 17:44:02,939 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-11-07 17:44:08,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:44:08,164 INFO L93 Difference]: Finished difference Result 5390 states and 8076 transitions. [2018-11-07 17:44:08,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 17:44:08,164 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 111 [2018-11-07 17:44:08,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:44:08,192 INFO L225 Difference]: With dead ends: 5390 [2018-11-07 17:44:08,192 INFO L226 Difference]: Without dead ends: 3380 [2018-11-07 17:44:08,209 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 17:44:08,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3380 states. [2018-11-07 17:44:08,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3380 to 2783. [2018-11-07 17:44:08,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2783 states. [2018-11-07 17:44:08,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2783 states to 2783 states and 4021 transitions. [2018-11-07 17:44:08,316 INFO L78 Accepts]: Start accepts. Automaton has 2783 states and 4021 transitions. Word has length 111 [2018-11-07 17:44:08,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:44:08,316 INFO L480 AbstractCegarLoop]: Abstraction has 2783 states and 4021 transitions. [2018-11-07 17:44:08,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 17:44:08,317 INFO L276 IsEmpty]: Start isEmpty. Operand 2783 states and 4021 transitions. [2018-11-07 17:44:08,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-11-07 17:44:08,322 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:44:08,322 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 17:44:08,323 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:44:08,323 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:44:08,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1670217856, now seen corresponding path program 1 times [2018-11-07 17:44:08,323 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:44:08,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:44:08,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:44:08,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:44:08,325 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:44:08,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:44:08,618 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 18 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 17:44:08,619 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:44:08,619 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 17:44:08,620 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 185 with the following transitions: [2018-11-07 17:44:08,622 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [29], [31], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 17:44:08,668 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 17:44:08,668 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 17:44:09,264 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 17:44:09,283 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 17:44:09,287 INFO L272 AbstractInterpreter]: Visited 100 different actions 100 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-11-07 17:44:09,341 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:44:09,341 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 17:44:09,980 INFO L227 lantSequenceWeakener]: Weakened 175 states. On average, predicates are now at 72.86% of their original sizes. [2018-11-07 17:44:09,980 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 17:44:10,348 INFO L415 sIntCurrentIteration]: We unified 183 AI predicates to 183 [2018-11-07 17:44:10,349 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 17:44:10,350 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 17:44:10,350 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 17:44:10,350 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:44:10,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 17:44:10,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 17:44:10,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 17:44:10,353 INFO L87 Difference]: Start difference. First operand 2783 states and 4021 transitions. Second operand 7 states. [2018-11-07 17:44:26,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:44:26,036 INFO L93 Difference]: Finished difference Result 5752 states and 8252 transitions. [2018-11-07 17:44:26,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 17:44:26,036 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 184 [2018-11-07 17:44:26,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:44:26,052 INFO L225 Difference]: With dead ends: 5752 [2018-11-07 17:44:26,052 INFO L226 Difference]: Without dead ends: 2975 [2018-11-07 17:44:26,063 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 184 GetRequests, 178 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 17:44:26,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2975 states. [2018-11-07 17:44:26,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 2973. [2018-11-07 17:44:26,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2973 states. [2018-11-07 17:44:26,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2973 states to 2973 states and 4222 transitions. [2018-11-07 17:44:26,155 INFO L78 Accepts]: Start accepts. Automaton has 2973 states and 4222 transitions. Word has length 184 [2018-11-07 17:44:26,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:44:26,155 INFO L480 AbstractCegarLoop]: Abstraction has 2973 states and 4222 transitions. [2018-11-07 17:44:26,156 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 17:44:26,156 INFO L276 IsEmpty]: Start isEmpty. Operand 2973 states and 4222 transitions. [2018-11-07 17:44:26,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-11-07 17:44:26,161 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:44:26,162 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 17:44:26,162 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:44:26,163 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:44:26,163 INFO L82 PathProgramCache]: Analyzing trace with hash -104208154, now seen corresponding path program 1 times [2018-11-07 17:44:26,163 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:44:26,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:44:26,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:44:26,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:44:26,164 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:44:26,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:44:26,842 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-11-07 17:44:26,842 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:44:26,842 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 17:44:26,842 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 229 with the following transitions: [2018-11-07 17:44:26,843 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [29], [31], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [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 17:44:26,848 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 17:44:26,849 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 17:44:27,335 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 17:44:27,514 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 17:44:27,515 INFO L272 AbstractInterpreter]: Visited 125 different actions 246 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-07 17:44:27,529 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:44:27,530 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 17:44:27,857 INFO L227 lantSequenceWeakener]: Weakened 225 states. On average, predicates are now at 72.96% of their original sizes. [2018-11-07 17:44:27,857 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 17:44:28,267 INFO L415 sIntCurrentIteration]: We unified 227 AI predicates to 227 [2018-11-07 17:44:28,267 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 17:44:28,267 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 17:44:28,268 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [7] total 16 [2018-11-07 17:44:28,268 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:44:28,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 17:44:28,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 17:44:28,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-07 17:44:28,269 INFO L87 Difference]: Start difference. First operand 2973 states and 4222 transitions. Second operand 11 states. [2018-11-07 17:44:43,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:44:43,846 INFO L93 Difference]: Finished difference Result 5945 states and 8508 transitions. [2018-11-07 17:44:43,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-07 17:44:43,846 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 228 [2018-11-07 17:44:43,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:44:43,866 INFO L225 Difference]: With dead ends: 5945 [2018-11-07 17:44:43,866 INFO L226 Difference]: Without dead ends: 3168 [2018-11-07 17:44:43,879 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 236 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2018-11-07 17:44:43,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3168 states. [2018-11-07 17:44:43,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3168 to 3164. [2018-11-07 17:44:43,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3164 states. [2018-11-07 17:44:43,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3164 states to 3164 states and 4435 transitions. [2018-11-07 17:44:43,961 INFO L78 Accepts]: Start accepts. Automaton has 3164 states and 4435 transitions. Word has length 228 [2018-11-07 17:44:43,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:44:43,962 INFO L480 AbstractCegarLoop]: Abstraction has 3164 states and 4435 transitions. [2018-11-07 17:44:43,962 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-07 17:44:43,962 INFO L276 IsEmpty]: Start isEmpty. Operand 3164 states and 4435 transitions. [2018-11-07 17:44:43,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-11-07 17:44:43,969 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:44:43,969 INFO L375 BasicCegarLoop]: trace histogram [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, 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 17:44:43,970 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:44:43,970 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:44:43,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1879441882, now seen corresponding path program 1 times [2018-11-07 17:44:43,970 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:44:43,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:44:43,971 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:44:43,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:44:43,972 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:44:44,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:44:44,866 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 22 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 17:44:44,866 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:44:44,871 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 17:44:44,871 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 239 with the following transitions: [2018-11-07 17:44:44,872 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [29], [31], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [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 17:44:44,877 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 17:44:44,877 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 17:44:44,944 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 17:44:45,230 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 17:44:45,231 INFO L272 AbstractInterpreter]: Visited 135 different actions 392 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 17:44:45,238 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:44:45,238 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 17:44:45,515 INFO L227 lantSequenceWeakener]: Weakened 235 states. On average, predicates are now at 72.97% of their original sizes. [2018-11-07 17:44:45,516 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 17:44:45,776 INFO L415 sIntCurrentIteration]: We unified 237 AI predicates to 237 [2018-11-07 17:44:45,777 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 17:44:45,777 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 17:44:45,777 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2018-11-07 17:44:45,777 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:44:45,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 17:44:45,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 17:44:45,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-07 17:44:45,778 INFO L87 Difference]: Start difference. First operand 3164 states and 4435 transitions. Second operand 11 states. [2018-11-07 17:45:00,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:45:00,545 INFO L93 Difference]: Finished difference Result 6338 states and 9003 transitions. [2018-11-07 17:45:00,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-07 17:45:00,546 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 238 [2018-11-07 17:45:00,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:45:00,561 INFO L225 Difference]: With dead ends: 6338 [2018-11-07 17:45:00,561 INFO L226 Difference]: Without dead ends: 3561 [2018-11-07 17:45:00,571 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 247 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2018-11-07 17:45:00,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3561 states. [2018-11-07 17:45:00,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3561 to 3551. [2018-11-07 17:45:00,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3551 states. [2018-11-07 17:45:00,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3551 states to 3551 states and 4887 transitions. [2018-11-07 17:45:00,650 INFO L78 Accepts]: Start accepts. Automaton has 3551 states and 4887 transitions. Word has length 238 [2018-11-07 17:45:00,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:45:00,651 INFO L480 AbstractCegarLoop]: Abstraction has 3551 states and 4887 transitions. [2018-11-07 17:45:00,651 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-07 17:45:00,651 INFO L276 IsEmpty]: Start isEmpty. Operand 3551 states and 4887 transitions. [2018-11-07 17:45:00,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-11-07 17:45:00,657 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:45:00,657 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-11-07 17:45:00,658 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:45:00,658 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:45:00,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1572387431, now seen corresponding path program 1 times [2018-11-07 17:45:00,658 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:45:00,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:45:00,659 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:45:00,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:45:00,659 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:45:00,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:45:00,844 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-11-07 17:45:00,845 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 17:45:00,845 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 17:45:00,845 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:45:00,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 17:45:00,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 17:45:00,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 17:45:00,846 INFO L87 Difference]: Start difference. First operand 3551 states and 4887 transitions. Second operand 3 states. [2018-11-07 17:45:02,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:45:02,372 INFO L93 Difference]: Finished difference Result 7396 states and 10932 transitions. [2018-11-07 17:45:02,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 17:45:02,372 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 240 [2018-11-07 17:45:02,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:45:02,396 INFO L225 Difference]: With dead ends: 7396 [2018-11-07 17:45:02,396 INFO L226 Difference]: Without dead ends: 4619 [2018-11-07 17:45:02,412 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 17:45:02,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4619 states. [2018-11-07 17:45:02,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4619 to 4457. [2018-11-07 17:45:02,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4457 states. [2018-11-07 17:45:02,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4457 states to 4457 states and 6198 transitions. [2018-11-07 17:45:02,531 INFO L78 Accepts]: Start accepts. Automaton has 4457 states and 6198 transitions. Word has length 240 [2018-11-07 17:45:02,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:45:02,532 INFO L480 AbstractCegarLoop]: Abstraction has 4457 states and 6198 transitions. [2018-11-07 17:45:02,532 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 17:45:02,532 INFO L276 IsEmpty]: Start isEmpty. Operand 4457 states and 6198 transitions. [2018-11-07 17:45:02,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-11-07 17:45:02,540 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:45:02,540 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-11-07 17:45:02,540 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:45:02,541 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:45:02,541 INFO L82 PathProgramCache]: Analyzing trace with hash 383234356, now seen corresponding path program 1 times [2018-11-07 17:45:02,541 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:45:02,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:45:02,542 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:45:02,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:45:02,542 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:45:02,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:45:03,620 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 25 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 17:45:03,620 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:45:03,620 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 17:45:03,620 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 244 with the following transitions: [2018-11-07 17:45:03,621 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [29], [31], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 17:45:03,627 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 17:45:03,627 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 17:45:03,676 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 17:45:04,199 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 17:45:04,199 INFO L272 AbstractInterpreter]: Visited 141 different actions 409 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 17:45:04,205 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:45:04,206 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 17:45:04,206 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:45:04,207 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 17:45:04,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:45:04,216 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 17:45:04,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:45:04,324 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 17:45:05,392 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 10 [2018-11-07 17:45:05,514 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 17:45:05,515 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 17:45:05,666 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-11-07 17:45:06,236 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 10 [2018-11-07 17:45:06,581 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 17:45:06,897 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 19 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 17:45:06,918 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 17:45:06,918 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 21 [2018-11-07 17:45:06,918 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 17:45:06,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 17:45:06,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 17:45:06,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2018-11-07 17:45:06,921 INFO L87 Difference]: Start difference. First operand 4457 states and 6198 transitions. Second operand 16 states. [2018-11-07 17:45:19,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:45:19,742 INFO L93 Difference]: Finished difference Result 13198 states and 24073 transitions. [2018-11-07 17:45:19,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-11-07 17:45:19,744 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 243 [2018-11-07 17:45:19,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:45:19,838 INFO L225 Difference]: With dead ends: 13198 [2018-11-07 17:45:19,838 INFO L226 Difference]: Without dead ends: 9515 [2018-11-07 17:45:19,886 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 477 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1250 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=944, Invalid=3478, Unknown=0, NotChecked=0, Total=4422 [2018-11-07 17:45:19,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9515 states. [2018-11-07 17:45:20,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9515 to 8596. [2018-11-07 17:45:20,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8596 states. [2018-11-07 17:45:20,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8596 states to 8596 states and 12187 transitions. [2018-11-07 17:45:20,567 INFO L78 Accepts]: Start accepts. Automaton has 8596 states and 12187 transitions. Word has length 243 [2018-11-07 17:45:20,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:45:20,568 INFO L480 AbstractCegarLoop]: Abstraction has 8596 states and 12187 transitions. [2018-11-07 17:45:20,568 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-07 17:45:20,568 INFO L276 IsEmpty]: Start isEmpty. Operand 8596 states and 12187 transitions. [2018-11-07 17:45:20,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2018-11-07 17:45:20,576 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:45:20,577 INFO L375 BasicCegarLoop]: trace histogram [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, 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 17:45:20,577 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:45:20,577 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:45:20,577 INFO L82 PathProgramCache]: Analyzing trace with hash 917571721, now seen corresponding path program 1 times [2018-11-07 17:45:20,578 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:45:20,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:45:20,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:45:20,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:45:20,579 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:45:20,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:45:21,473 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-11-07 17:45:21,474 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:45:21,474 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 17:45:21,474 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 260 with the following transitions: [2018-11-07 17:45:21,475 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [29], [31], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [869], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 17:45:21,486 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 17:45:21,486 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 17:45:21,605 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 17:45:22,492 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 17:45:22,492 INFO L272 AbstractInterpreter]: Visited 156 different actions 455 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 17:45:22,514 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:45:22,515 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 17:45:23,320 INFO L227 lantSequenceWeakener]: Weakened 45 states. On average, predicates are now at 73.63% of their original sizes. [2018-11-07 17:45:23,321 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 17:45:24,100 INFO L415 sIntCurrentIteration]: We unified 258 AI predicates to 258 [2018-11-07 17:45:24,100 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 17:45:24,100 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 17:45:24,100 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [7] total 26 [2018-11-07 17:45:24,100 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:45:24,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-07 17:45:24,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-07 17:45:24,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2018-11-07 17:45:24,102 INFO L87 Difference]: Start difference. First operand 8596 states and 12187 transitions. Second operand 21 states. [2018-11-07 17:45:44,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:45:44,577 INFO L93 Difference]: Finished difference Result 17732 states and 25167 transitions. [2018-11-07 17:45:44,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-11-07 17:45:44,577 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 259 [2018-11-07 17:45:44,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:45:44,608 INFO L225 Difference]: With dead ends: 17732 [2018-11-07 17:45:44,608 INFO L226 Difference]: Without dead ends: 9713 [2018-11-07 17:45:44,623 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 277 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=297, Invalid=1263, Unknown=0, NotChecked=0, Total=1560 [2018-11-07 17:45:44,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9713 states. [2018-11-07 17:45:44,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9713 to 9691. [2018-11-07 17:45:44,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9691 states. [2018-11-07 17:45:44,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9691 states to 9691 states and 13425 transitions. [2018-11-07 17:45:44,835 INFO L78 Accepts]: Start accepts. Automaton has 9691 states and 13425 transitions. Word has length 259 [2018-11-07 17:45:44,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:45:44,835 INFO L480 AbstractCegarLoop]: Abstraction has 9691 states and 13425 transitions. [2018-11-07 17:45:44,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-07 17:45:44,836 INFO L276 IsEmpty]: Start isEmpty. Operand 9691 states and 13425 transitions. [2018-11-07 17:45:44,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-11-07 17:45:44,844 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:45:44,845 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 17:45:44,845 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:45:44,845 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:45:44,845 INFO L82 PathProgramCache]: Analyzing trace with hash 221255465, now seen corresponding path program 1 times [2018-11-07 17:45:44,845 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:45:44,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:45:44,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:45:44,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:45:44,847 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:45:44,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:45:45,539 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 13 proven. 122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 17:45:45,540 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:45:45,540 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 17:45:45,540 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 266 with the following transitions: [2018-11-07 17:45:45,540 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [29], [31], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [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], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [784], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 17:45:45,544 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 17:45:45,544 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 17:45:45,639 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 17:45:46,273 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 17:45:46,274 INFO L272 AbstractInterpreter]: Visited 141 different actions 693 times. Merged at 7 different actions 34 times. Widened at 1 different actions 1 times. Found 5 fixpoints after 3 different actions. Largest state had 28 variables. [2018-11-07 17:45:46,281 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:45:46,281 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 17:45:46,281 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:45:46,281 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 17:45:46,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:45:46,296 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 17:45:46,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:45:46,403 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 17:45:46,440 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-11-07 17:45:46,441 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 17:45:46,537 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-11-07 17:45:46,557 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 17:45:46,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 8 [2018-11-07 17:45:46,558 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:45:46,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 17:45:46,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 17:45:46,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-11-07 17:45:46,559 INFO L87 Difference]: Start difference. First operand 9691 states and 13425 transitions. Second operand 3 states. [2018-11-07 17:45:47,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:45:47,823 INFO L93 Difference]: Finished difference Result 18941 states and 28017 transitions. [2018-11-07 17:45:47,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 17:45:47,823 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 265 [2018-11-07 17:45:47,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:45:47,863 INFO L225 Difference]: With dead ends: 18941 [2018-11-07 17:45:47,863 INFO L226 Difference]: Without dead ends: 11842 [2018-11-07 17:45:47,886 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 532 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-11-07 17:45:47,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11842 states. [2018-11-07 17:45:48,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11842 to 11267. [2018-11-07 17:45:48,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11267 states. [2018-11-07 17:45:48,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11267 states to 11267 states and 15645 transitions. [2018-11-07 17:45:48,140 INFO L78 Accepts]: Start accepts. Automaton has 11267 states and 15645 transitions. Word has length 265 [2018-11-07 17:45:48,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:45:48,141 INFO L480 AbstractCegarLoop]: Abstraction has 11267 states and 15645 transitions. [2018-11-07 17:45:48,141 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 17:45:48,141 INFO L276 IsEmpty]: Start isEmpty. Operand 11267 states and 15645 transitions. [2018-11-07 17:45:48,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-11-07 17:45:48,158 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:45:48,159 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 17:45:48,159 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:45:48,159 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:45:48,159 INFO L82 PathProgramCache]: Analyzing trace with hash -980599743, now seen corresponding path program 1 times [2018-11-07 17:45:48,159 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:45:48,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:45:48,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:45:48,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:45:48,161 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:45:48,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:45:49,468 WARN L179 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-11-07 17:45:49,806 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-07 17:45:50,071 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 17:45:50,563 WARN L179 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-11-07 17:45:51,390 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 210 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 17:45:51,391 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:45:51,391 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 17:45:51,391 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 314 with the following transitions: [2018-11-07 17:45:51,391 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [29], [31], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [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 17:45:51,394 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 17:45:51,394 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 17:45:51,438 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 17:45:52,469 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 17:45:52,469 INFO L272 AbstractInterpreter]: Visited 127 different actions 628 times. Merged at 8 different actions 39 times. Widened at 1 different actions 1 times. Found 8 fixpoints after 3 different actions. Largest state had 28 variables. [2018-11-07 17:45:52,478 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:45:52,478 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 17:45:52,478 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:45:52,478 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 17:45:52,488 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:45:52,489 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 17:45:52,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:45:52,588 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 17:45:52,717 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 208 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-11-07 17:45:52,718 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 17:45:53,197 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 208 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-11-07 17:45:53,217 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 17:45:53,217 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 20 [2018-11-07 17:45:53,217 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 17:45:53,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 17:45:53,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 17:45:53,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2018-11-07 17:45:53,219 INFO L87 Difference]: Start difference. First operand 11267 states and 15645 transitions. Second operand 18 states. [2018-11-07 17:45:55,623 WARN L179 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 31 [2018-11-07 17:45:59,817 WARN L179 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2018-11-07 17:46:05,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:46:05,214 INFO L93 Difference]: Finished difference Result 23814 states and 37352 transitions. [2018-11-07 17:46:05,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-11-07 17:46:05,214 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 313 [2018-11-07 17:46:05,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:46:05,257 INFO L225 Difference]: With dead ends: 23814 [2018-11-07 17:46:05,257 INFO L226 Difference]: Without dead ends: 13337 [2018-11-07 17:46:05,297 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 741 GetRequests, 668 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1535 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=1097, Invalid=4305, Unknown=0, NotChecked=0, Total=5402 [2018-11-07 17:46:05,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13337 states. [2018-11-07 17:46:05,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13337 to 12775. [2018-11-07 17:46:05,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12775 states. [2018-11-07 17:46:05,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12775 states to 12775 states and 16386 transitions. [2018-11-07 17:46:05,640 INFO L78 Accepts]: Start accepts. Automaton has 12775 states and 16386 transitions. Word has length 313 [2018-11-07 17:46:05,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:46:05,640 INFO L480 AbstractCegarLoop]: Abstraction has 12775 states and 16386 transitions. [2018-11-07 17:46:05,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-07 17:46:05,641 INFO L276 IsEmpty]: Start isEmpty. Operand 12775 states and 16386 transitions. [2018-11-07 17:46:05,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-11-07 17:46:05,658 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:46:05,659 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2018-11-07 17:46:05,659 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:46:05,659 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:46:05,660 INFO L82 PathProgramCache]: Analyzing trace with hash 819862920, now seen corresponding path program 1 times [2018-11-07 17:46:05,660 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:46:05,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:46:05,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:46:05,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:46:05,661 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:46:05,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:46:06,388 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 37 proven. 157 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-11-07 17:46:06,388 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:46:06,389 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 17:46:06,389 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 314 with the following transitions: [2018-11-07 17:46:06,390 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [29], [31], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [494], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 17:46:06,392 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 17:46:06,392 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 17:46:06,461 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 17:46:07,567 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 17:46:07,567 INFO L272 AbstractInterpreter]: Visited 142 different actions 842 times. Merged at 8 different actions 46 times. Widened at 1 different actions 1 times. Found 10 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-07 17:46:07,573 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:46:07,573 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 17:46:07,573 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:46:07,573 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 17:46:07,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:46:07,581 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 17:46:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:46:07,679 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 17:46:07,926 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-07 17:46:07,926 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 17:46:08,514 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-07 17:46:08,670 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 17:46:08,670 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2018-11-07 17:46:08,670 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 17:46:08,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 17:46:08,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 17:46:08,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-11-07 17:46:08,672 INFO L87 Difference]: Start difference. First operand 12775 states and 16386 transitions. Second operand 10 states. [2018-11-07 17:46:21,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:46:21,488 INFO L93 Difference]: Finished difference Result 43564 states and 60712 transitions. [2018-11-07 17:46:21,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-11-07 17:46:21,488 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 313 [2018-11-07 17:46:21,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:46:21,589 INFO L225 Difference]: With dead ends: 43564 [2018-11-07 17:46:21,589 INFO L226 Difference]: Without dead ends: 29962 [2018-11-07 17:46:21,653 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 778 GetRequests, 693 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2591 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1149, Invalid=6161, Unknown=0, NotChecked=0, Total=7310 [2018-11-07 17:46:21,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29962 states. [2018-11-07 17:46:22,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29962 to 29449. [2018-11-07 17:46:22,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29449 states. [2018-11-07 17:46:22,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29449 states to 29449 states and 38244 transitions. [2018-11-07 17:46:22,401 INFO L78 Accepts]: Start accepts. Automaton has 29449 states and 38244 transitions. Word has length 313 [2018-11-07 17:46:22,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:46:22,402 INFO L480 AbstractCegarLoop]: Abstraction has 29449 states and 38244 transitions. [2018-11-07 17:46:22,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 17:46:22,402 INFO L276 IsEmpty]: Start isEmpty. Operand 29449 states and 38244 transitions. [2018-11-07 17:46:22,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-11-07 17:46:22,416 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:46:22,416 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 17:46:22,417 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:46:22,417 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:46:22,417 INFO L82 PathProgramCache]: Analyzing trace with hash -623615582, now seen corresponding path program 1 times [2018-11-07 17:46:22,417 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:46:22,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:46:22,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:46:22,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:46:22,418 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:46:22,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:46:23,065 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2018-11-07 17:46:23,066 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:46:23,066 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 17:46:23,066 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 319 with the following transitions: [2018-11-07 17:46:23,067 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [29], [31], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [574], [575], [579], [583], [587], [591], [594], [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 17:46:23,069 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 17:46:23,069 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 17:46:23,132 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 17:46:23,828 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 17:46:23,828 INFO L272 AbstractInterpreter]: Visited 127 different actions 754 times. Merged at 8 different actions 51 times. Widened at 1 different actions 2 times. Found 10 fixpoints after 3 different actions. Largest state had 28 variables. [2018-11-07 17:46:23,834 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:46:23,834 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 17:46:23,834 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:46:23,834 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 17:46:23,843 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:46:23,843 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 17:46:23,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:46:23,947 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 17:46:24,783 WARN L179 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 10 [2018-11-07 17:46:24,882 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 213 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-11-07 17:46:24,882 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 17:46:25,123 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2018-11-07 17:46:25,652 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 213 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-11-07 17:46:25,673 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 17:46:25,673 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2018-11-07 17:46:25,673 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 17:46:25,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 17:46:25,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 17:46:25,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-11-07 17:46:25,675 INFO L87 Difference]: Start difference. First operand 29449 states and 38244 transitions. Second operand 10 states. [2018-11-07 17:46:33,397 WARN L179 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2018-11-07 17:46:38,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:46:38,860 INFO L93 Difference]: Finished difference Result 68014 states and 89831 transitions. [2018-11-07 17:46:38,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-11-07 17:46:38,860 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 318 [2018-11-07 17:46:38,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:46:39,013 INFO L225 Difference]: With dead ends: 68014 [2018-11-07 17:46:39,013 INFO L226 Difference]: Without dead ends: 39675 [2018-11-07 17:46:39,117 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 723 GetRequests, 672 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=442, Invalid=2108, Unknown=0, NotChecked=0, Total=2550 [2018-11-07 17:46:39,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39675 states. [2018-11-07 17:46:39,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39675 to 38348. [2018-11-07 17:46:39,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38348 states. [2018-11-07 17:46:40,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38348 states to 38348 states and 48785 transitions. [2018-11-07 17:46:40,057 INFO L78 Accepts]: Start accepts. Automaton has 38348 states and 48785 transitions. Word has length 318 [2018-11-07 17:46:40,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:46:40,057 INFO L480 AbstractCegarLoop]: Abstraction has 38348 states and 48785 transitions. [2018-11-07 17:46:40,057 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 17:46:40,058 INFO L276 IsEmpty]: Start isEmpty. Operand 38348 states and 48785 transitions. [2018-11-07 17:46:40,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2018-11-07 17:46:40,074 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:46:40,075 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 17:46:40,075 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:46:40,075 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:46:40,075 INFO L82 PathProgramCache]: Analyzing trace with hash -592269015, now seen corresponding path program 1 times [2018-11-07 17:46:40,076 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:46:40,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:46:40,076 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:46:40,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:46:40,077 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:46:40,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:46:40,541 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-07 17:46:40,760 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-11-07 17:46:40,761 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:46:40,761 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 17:46:40,761 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 325 with the following transitions: [2018-11-07 17:46:40,761 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [29], [31], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [870], [874], [878], [889], [893], [897], [901], [905], [909], [913], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [971], [975], [979], [983], [987], [991], [994], [999], [1001], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 17:46:40,764 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 17:46:40,765 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 17:46:40,866 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 17:46:42,303 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 17:46:42,304 INFO L272 AbstractInterpreter]: Visited 187 different actions 741 times. Merged at 7 different actions 29 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 28 variables. [2018-11-07 17:46:42,313 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:46:42,313 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 17:46:42,313 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:46:42,313 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 17:46:42,321 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:46:42,322 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 17:46:42,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:46:42,423 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 17:46:43,419 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2018-11-07 17:46:43,913 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-11-07 17:46:43,913 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 17:46:44,395 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-11-07 17:46:44,836 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 17 [2018-11-07 17:46:45,980 WARN L179 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2018-11-07 17:46:45,985 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:46,295 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:46,609 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:46,945 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:47,041 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:47,092 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:47,145 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:47,184 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:47,276 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:47,320 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:47,534 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:47,570 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:47,610 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:47,649 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:47,795 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:47,930 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:47,975 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:48,066 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:48,101 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:48,178 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:48,215 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:48,262 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:48,416 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:48,715 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:49,014 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:49,312 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:49,609 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:49,923 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:50,231 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:50,496 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:50,533 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:50,568 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:50,603 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:50,640 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:50,673 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:50,725 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:50,860 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:50,898 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:50,933 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:50,967 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:51,005 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:51,041 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:51,074 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:51,108 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:51,168 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:51,202 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:51,236 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:51,370 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:51,404 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:51,439 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:51,502 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:51,535 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:51,567 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:51,628 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:51,930 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:52,047 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:52,126 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:52,177 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:52,210 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:52,268 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:52,303 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:52,336 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:52,371 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:52,404 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:52,437 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:52,472 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:52,512 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:52,546 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:52,579 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:52,615 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:52,682 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:52,735 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:52,769 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:52,803 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:52,840 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:52,876 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:52,912 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:52,944 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:52,978 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:53,012 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:53,046 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:53,080 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:53,137 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:53,199 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:53,233 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:53,277 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:53,311 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:53,343 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:53,378 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:53,450 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:53,485 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:53,521 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:53,554 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:53,587 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:53,622 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:53,657 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:53,690 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:53,725 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:53,811 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:53,845 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:53,881 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:53,915 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:53,950 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:53,986 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:54,021 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:54,053 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:54,089 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:54,395 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:54,702 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:54,775 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:55,077 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:55,128 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:55,293 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:55,585 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:55,620 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:55,655 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:55,707 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:55,823 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:55,858 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:55,893 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:55,928 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:55,963 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:55,995 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:56,028 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:56,066 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:56,104 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:56,145 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:56,181 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:56,218 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:56,270 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:56,303 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:56,339 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:56,371 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:56,406 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:56,441 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:56,475 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:56,511 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:56,545 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:56,580 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:56,616 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:56,653 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:56,685 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:56,719 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:56,753 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:56,787 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:56,822 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:56,854 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:56,887 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:56,922 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:56,956 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:56,987 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:57,034 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:57,080 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:57,124 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:57,188 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:57,238 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:57,286 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:57,333 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:57,380 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:57,411 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:57,442 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:57,482 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:57,517 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:57,548 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:57,581 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:57,614 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:57,646 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 17:46:59,735 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 21 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 17:46:59,755 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 17:46:59,755 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2018-11-07 17:46:59,755 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 17:46:59,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 17:46:59,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 17:46:59,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2018-11-07 17:46:59,757 INFO L87 Difference]: Start difference. First operand 38348 states and 48785 transitions. Second operand 16 states. Received shutdown request... [2018-11-07 17:47:16,026 WARN L187 SmtUtils]: Removed 2 from assertion stack [2018-11-07 17:47:16,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-11-07 17:47:16,027 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 17:47:16,031 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 17:47:16,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 05:47:16 BoogieIcfgContainer [2018-11-07 17:47:16,031 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 17:47:16,032 INFO L168 Benchmark]: Toolchain (without parser) took 208816.79 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -190.3 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-11-07 17:47:16,033 INFO L168 Benchmark]: CDTParser took 0.25 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 17:47:16,034 INFO L168 Benchmark]: CACSL2BoogieTranslator took 909.41 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-11-07 17:47:16,035 INFO L168 Benchmark]: Boogie Procedure Inliner took 180.51 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 727.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -833.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2018-11-07 17:47:16,036 INFO L168 Benchmark]: Boogie Preprocessor took 114.90 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 17:47:16,036 INFO L168 Benchmark]: RCFGBuilder took 4512.90 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 179.4 MB). Peak memory consumption was 179.4 MB. Max. memory is 7.1 GB. [2018-11-07 17:47:16,037 INFO L168 Benchmark]: TraceAbstraction took 203093.29 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.7 GB). Free memory was 2.0 GB in the beginning and 1.6 GB in the end (delta: 400.7 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-11-07 17:47:16,044 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 909.41 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 180.51 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 727.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -833.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.90 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 4512.90 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 179.4 MB). Peak memory consumption was 179.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 203093.29 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.7 GB). Free memory was 2.0 GB in the beginning and 1.6 GB in the end (delta: 400.7 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 33]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 33). Cancelled while BasicCegarLoop was constructing difference of abstraction (38348states) and FLOYD_HOARE automaton (currently 68 states, 16 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 38. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 203.0s OverallTime, 14 OverallIterations, 4 TraceHistogramMax, 150.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3710 SDtfs, 27192 SDslu, 5885 SDs, 0 SdLazy, 52702 SolverSat, 7268 SolverUnsat, 54 SolverUnknown, 0 SolverNotchecked, 79.8s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 5020 GetRequests, 4391 SyntacticMatches, 175 SemanticMatches, 453 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11114 ImplicationChecksByTransitivity, 34.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38348occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 8.7s AbstIntTime, 10 AbstIntIterations, 4 AbstIntStrong, 0.9974292864900598 AbsIntWeakeningRatio, 0.12375690607734807 AbsIntAvgWeakeningVarsNumRemoved, 19.36353591160221 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.8s AutomataMinimizationTime, 13 MinimizatonAttempts, 4711 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 32.8s InterpolantComputationTime, 4918 NumberOfCodeBlocks, 4918 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 6668 ConstructedInterpolants, 331 QuantifiedInterpolants, 17203924 SizeOfPredicates, 16 NumberOfNonLiveVariables, 3144 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 26 InterpolantComputations, 6 PerfectInterpolantSequences, 3365/4314 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown