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/Problem15_label23_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 16:36:20,355 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 16:36:20,357 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 16:36:20,372 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 16:36:20,372 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 16:36:20,373 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 16:36:20,374 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 16:36:20,376 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 16:36:20,378 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 16:36:20,379 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 16:36:20,379 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 16:36:20,380 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 16:36:20,381 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 16:36:20,382 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 16:36:20,383 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 16:36:20,383 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 16:36:20,384 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 16:36:20,386 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 16:36:20,390 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 16:36:20,393 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 16:36:20,395 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 16:36:20,400 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 16:36:20,405 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 16:36:20,405 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 16:36:20,405 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 16:36:20,406 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 16:36:20,409 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 16:36:20,410 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 16:36:20,411 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 16:36:20,415 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 16:36:20,415 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 16:36:20,416 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 16:36:20,416 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 16:36:20,416 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 16:36:20,418 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 16:36:20,419 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 16:36:20,419 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 [2018-11-12 16:36:20,444 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 16:36:20,445 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 16:36:20,446 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 16:36:20,446 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 16:36:20,446 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 16:36:20,446 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 16:36:20,446 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 16:36:20,446 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 16:36:20,447 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 16:36:20,447 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 16:36:20,447 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 16:36:20,447 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 16:36:20,447 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 16:36:20,448 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 16:36:20,448 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 16:36:20,448 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 16:36:20,449 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 16:36:20,449 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 16:36:20,449 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 16:36:20,449 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 16:36:20,449 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 16:36:20,450 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 16:36:20,450 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 16:36:20,450 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 16:36:20,450 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 16:36:20,450 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:36:20,450 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 16:36:20,451 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 16:36:20,451 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 16:36:20,451 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 16:36:20,451 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 16:36:20,451 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 16:36:20,452 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 16:36:20,452 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 16:36:20,452 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 16:36:20,495 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 16:36:20,511 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 16:36:20,515 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 16:36:20,517 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 16:36:20,517 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 16:36:20,518 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label23_false-unreach-call.c [2018-11-12 16:36:20,590 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e2f5447b/b90867a5759a46b88e35e43859e35310/FLAG2cf081140 [2018-11-12 16:36:21,312 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 16:36:21,314 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label23_false-unreach-call.c [2018-11-12 16:36:21,336 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e2f5447b/b90867a5759a46b88e35e43859e35310/FLAG2cf081140 [2018-11-12 16:36:21,353 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e2f5447b/b90867a5759a46b88e35e43859e35310 [2018-11-12 16:36:21,365 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 16:36:21,368 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 16:36:21,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 16:36:21,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 16:36:21,373 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 16:36:21,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:36:21" (1/1) ... [2018-11-12 16:36:21,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@251bc0bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:36:21, skipping insertion in model container [2018-11-12 16:36:21,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:36:21" (1/1) ... [2018-11-12 16:36:21,388 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 16:36:21,490 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 16:36:22,294 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:36:22,299 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 16:36:22,590 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:36:22,610 INFO L193 MainTranslator]: Completed translation [2018-11-12 16:36:22,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:36:22 WrapperNode [2018-11-12 16:36:22,610 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 16:36:22,611 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 16:36:22,612 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 16:36:22,612 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 16:36:22,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:36:22" (1/1) ... [2018-11-12 16:36:22,819 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:36:22" (1/1) ... [2018-11-12 16:36:22,827 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 16:36:22,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 16:36:22,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 16:36:22,828 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 16:36:22,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:36:22" (1/1) ... [2018-11-12 16:36:22,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:36:22" (1/1) ... [2018-11-12 16:36:22,850 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:36:22" (1/1) ... [2018-11-12 16:36:22,851 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:36:22" (1/1) ... [2018-11-12 16:36:22,923 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:36:22" (1/1) ... [2018-11-12 16:36:22,939 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:36:22" (1/1) ... [2018-11-12 16:36:22,963 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:36:22" (1/1) ... [2018-11-12 16:36:22,988 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 16:36:22,989 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 16:36:22,989 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 16:36:22,989 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 16:36:22,990 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:36:22" (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 [2018-11-12 16:36:23,062 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 16:36:23,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 16:36:23,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 16:36:23,062 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 16:36:23,063 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 16:36:23,063 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 16:36:23,063 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 16:36:23,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 16:36:23,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 16:36:23,064 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 16:36:23,064 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 16:36:29,055 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 16:36:29,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:36:29 BoogieIcfgContainer [2018-11-12 16:36:29,056 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 16:36:29,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 16:36:29,058 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 16:36:29,061 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 16:36:29,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:36:21" (1/3) ... [2018-11-12 16:36:29,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44beafc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:36:29, skipping insertion in model container [2018-11-12 16:36:29,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:36:22" (2/3) ... [2018-11-12 16:36:29,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44beafc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:36:29, skipping insertion in model container [2018-11-12 16:36:29,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:36:29" (3/3) ... [2018-11-12 16:36:29,065 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label23_false-unreach-call.c [2018-11-12 16:36:29,076 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 16:36:29,085 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 16:36:29,104 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 16:36:29,147 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 16:36:29,147 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 16:36:29,147 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 16:36:29,147 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 16:36:29,148 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 16:36:29,148 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 16:36:29,148 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 16:36:29,148 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 16:36:29,183 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-12 16:36:29,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-12 16:36:29,191 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:36:29,192 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:36:29,195 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:36:29,201 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:36:29,202 INFO L82 PathProgramCache]: Analyzing trace with hash -263633140, now seen corresponding path program 1 times [2018-11-12 16:36:29,204 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:36:29,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:36:29,251 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:36:29,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:36:29,251 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:36:29,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:36:29,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:36:29,653 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:36:29,654 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 16:36:29,654 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:36:29,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 16:36:29,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 16:36:29,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:36:29,681 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-11-12 16:36:35,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:36:35,803 INFO L93 Difference]: Finished difference Result 1558 states and 2849 transitions. [2018-11-12 16:36:35,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 16:36:35,807 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2018-11-12 16:36:35,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:36:35,839 INFO L225 Difference]: With dead ends: 1558 [2018-11-12 16:36:35,840 INFO L226 Difference]: Without dead ends: 1114 [2018-11-12 16:36:35,855 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:36:35,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2018-11-12 16:36:36,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 759. [2018-11-12 16:36:36,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 759 states. [2018-11-12 16:36:36,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1355 transitions. [2018-11-12 16:36:36,023 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1355 transitions. Word has length 24 [2018-11-12 16:36:36,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:36:36,024 INFO L480 AbstractCegarLoop]: Abstraction has 759 states and 1355 transitions. [2018-11-12 16:36:36,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 16:36:36,025 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1355 transitions. [2018-11-12 16:36:36,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-11-12 16:36:36,035 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:36:36,035 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 16:36:36,036 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:36:36,036 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:36:36,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1599824585, now seen corresponding path program 1 times [2018-11-12 16:36:36,036 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:36:36,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:36:36,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:36:36,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:36:36,039 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:36:36,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:36:36,323 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:36:36,323 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:36:36,323 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 16:36:36,324 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:36:36,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:36:36,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:36:36,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:36:36,326 INFO L87 Difference]: Start difference. First operand 759 states and 1355 transitions. Second operand 3 states. [2018-11-12 16:36:40,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:36:40,069 INFO L93 Difference]: Finished difference Result 2135 states and 3917 transitions. [2018-11-12 16:36:40,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:36:40,070 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2018-11-12 16:36:40,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:36:40,083 INFO L225 Difference]: With dead ends: 2135 [2018-11-12 16:36:40,083 INFO L226 Difference]: Without dead ends: 1382 [2018-11-12 16:36:40,089 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:36:40,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2018-11-12 16:36:40,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1379. [2018-11-12 16:36:40,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1379 states. [2018-11-12 16:36:40,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 2119 transitions. [2018-11-12 16:36:40,160 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 2119 transitions. Word has length 94 [2018-11-12 16:36:40,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:36:40,161 INFO L480 AbstractCegarLoop]: Abstraction has 1379 states and 2119 transitions. [2018-11-12 16:36:40,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:36:40,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 2119 transitions. [2018-11-12 16:36:40,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-11-12 16:36:40,171 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:36:40,171 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:36:40,172 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:36:40,172 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:36:40,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1923051551, now seen corresponding path program 1 times [2018-11-12 16:36:40,172 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:36:40,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:36:40,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:36:40,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:36:40,176 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:36:40,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:36:40,372 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:36:40,372 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:36:40,373 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 16:36:40,373 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:36:40,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 16:36:40,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 16:36:40,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 16:36:40,374 INFO L87 Difference]: Start difference. First operand 1379 states and 2119 transitions. Second operand 5 states. [2018-11-12 16:36:45,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:36:45,836 INFO L93 Difference]: Finished difference Result 4128 states and 6427 transitions. [2018-11-12 16:36:45,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 16:36:45,837 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2018-11-12 16:36:45,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:36:45,862 INFO L225 Difference]: With dead ends: 4128 [2018-11-12 16:36:45,863 INFO L226 Difference]: Without dead ends: 2755 [2018-11-12 16:36:45,872 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 16:36:45,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2755 states. [2018-11-12 16:36:45,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2755 to 2704. [2018-11-12 16:36:45,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2704 states. [2018-11-12 16:36:45,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2704 states to 2704 states and 3742 transitions. [2018-11-12 16:36:45,993 INFO L78 Accepts]: Start accepts. Automaton has 2704 states and 3742 transitions. Word has length 111 [2018-11-12 16:36:45,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:36:45,994 INFO L480 AbstractCegarLoop]: Abstraction has 2704 states and 3742 transitions. [2018-11-12 16:36:45,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 16:36:45,994 INFO L276 IsEmpty]: Start isEmpty. Operand 2704 states and 3742 transitions. [2018-11-12 16:36:46,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2018-11-12 16:36:46,008 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:36:46,008 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:36:46,012 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:36:46,012 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:36:46,013 INFO L82 PathProgramCache]: Analyzing trace with hash 56698522, now seen corresponding path program 1 times [2018-11-12 16:36:46,013 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:36:46,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:36:46,014 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:36:46,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:36:46,014 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:36:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:36:46,832 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-12 16:36:46,832 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:36:46,833 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:36:46,834 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 300 with the following transitions: [2018-11-12 16:36:46,838 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [165], [167], [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], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 16:36:46,918 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:36:46,920 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:36:47,936 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:36:48,824 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:36:48,826 INFO L272 AbstractInterpreter]: Visited 282 different actions 558 times. Merged at 5 different actions 5 times. Never widened. Performed 7988 root evaluator evaluations with a maximum evaluation depth of 6. Performed 7988 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:36:48,860 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:36:48,861 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:36:49,895 INFO L227 lantSequenceWeakener]: Weakened 225 states. On average, predicates are now at 79.8% of their original sizes. [2018-11-12 16:36:49,896 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:36:51,367 INFO L415 sIntCurrentIteration]: We unified 298 AI predicates to 298 [2018-11-12 16:36:51,367 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:36:51,368 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:36:51,368 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [5] total 22 [2018-11-12 16:36:51,368 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:36:51,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-12 16:36:51,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-12 16:36:51,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2018-11-12 16:36:51,370 INFO L87 Difference]: Start difference. First operand 2704 states and 3742 transitions. Second operand 19 states. [2018-11-12 16:37:55,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:37:55,673 INFO L93 Difference]: Finished difference Result 6636 states and 9116 transitions. [2018-11-12 16:37:55,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-11-12 16:37:55,674 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 299 [2018-11-12 16:37:55,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:37:55,696 INFO L225 Difference]: With dead ends: 6636 [2018-11-12 16:37:55,697 INFO L226 Difference]: Without dead ends: 3938 [2018-11-12 16:37:55,712 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 318 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=279, Invalid=1203, Unknown=0, NotChecked=0, Total=1482 [2018-11-12 16:37:55,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3938 states. [2018-11-12 16:37:55,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3938 to 3931. [2018-11-12 16:37:55,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3931 states. [2018-11-12 16:37:55,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3931 states to 3931 states and 5049 transitions. [2018-11-12 16:37:55,830 INFO L78 Accepts]: Start accepts. Automaton has 3931 states and 5049 transitions. Word has length 299 [2018-11-12 16:37:55,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:37:55,831 INFO L480 AbstractCegarLoop]: Abstraction has 3931 states and 5049 transitions. [2018-11-12 16:37:55,832 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-12 16:37:55,832 INFO L276 IsEmpty]: Start isEmpty. Operand 3931 states and 5049 transitions. [2018-11-12 16:37:55,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2018-11-12 16:37:55,838 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:37:55,839 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:37:55,839 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:37:55,839 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:37:55,839 INFO L82 PathProgramCache]: Analyzing trace with hash 120027281, now seen corresponding path program 1 times [2018-11-12 16:37:55,840 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:37:55,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:37:55,841 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:37:55,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:37:55,841 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:37:55,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:37:56,895 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-11-12 16:37:56,895 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:37:56,895 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 16:37:56,895 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:37:56,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 16:37:56,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 16:37:56,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:37:56,897 INFO L87 Difference]: Start difference. First operand 3931 states and 5049 transitions. Second operand 4 states. [2018-11-12 16:38:00,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:38:00,648 INFO L93 Difference]: Finished difference Result 11581 states and 16062 transitions. [2018-11-12 16:38:00,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 16:38:00,649 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 395 [2018-11-12 16:38:00,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:38:00,696 INFO L225 Difference]: With dead ends: 11581 [2018-11-12 16:38:00,696 INFO L226 Difference]: Without dead ends: 8883 [2018-11-12 16:38:00,728 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:38:00,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8883 states. [2018-11-12 16:38:00,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8883 to 8883. [2018-11-12 16:38:00,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8883 states. [2018-11-12 16:38:00,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8883 states to 8883 states and 10979 transitions. [2018-11-12 16:38:00,956 INFO L78 Accepts]: Start accepts. Automaton has 8883 states and 10979 transitions. Word has length 395 [2018-11-12 16:38:00,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:38:00,957 INFO L480 AbstractCegarLoop]: Abstraction has 8883 states and 10979 transitions. [2018-11-12 16:38:00,957 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 16:38:00,957 INFO L276 IsEmpty]: Start isEmpty. Operand 8883 states and 10979 transitions. [2018-11-12 16:38:00,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2018-11-12 16:38:00,969 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:38:00,969 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:38:00,970 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:38:00,970 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:38:00,970 INFO L82 PathProgramCache]: Analyzing trace with hash 296859740, now seen corresponding path program 1 times [2018-11-12 16:38:00,970 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:38:00,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:38:00,971 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:38:00,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:38:00,972 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:38:01,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:38:01,379 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-12 16:38:01,380 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:38:01,380 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 16:38:01,380 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:38:01,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:38:01,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:38:01,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:38:01,382 INFO L87 Difference]: Start difference. First operand 8883 states and 10979 transitions. Second operand 3 states. [2018-11-12 16:38:03,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:38:03,740 INFO L93 Difference]: Finished difference Result 19638 states and 25601 transitions. [2018-11-12 16:38:03,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:38:03,741 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 411 [2018-11-12 16:38:03,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:38:03,799 INFO L225 Difference]: With dead ends: 19638 [2018-11-12 16:38:03,799 INFO L226 Difference]: Without dead ends: 11988 [2018-11-12 16:38:03,841 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:38:03,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11988 states. [2018-11-12 16:38:04,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11988 to 11987. [2018-11-12 16:38:04,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11987 states. [2018-11-12 16:38:04,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11987 states to 11987 states and 14631 transitions. [2018-11-12 16:38:04,127 INFO L78 Accepts]: Start accepts. Automaton has 11987 states and 14631 transitions. Word has length 411 [2018-11-12 16:38:04,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:38:04,128 INFO L480 AbstractCegarLoop]: Abstraction has 11987 states and 14631 transitions. [2018-11-12 16:38:04,128 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:38:04,128 INFO L276 IsEmpty]: Start isEmpty. Operand 11987 states and 14631 transitions. [2018-11-12 16:38:04,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2018-11-12 16:38:04,147 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:38:04,148 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:38:04,148 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:38:04,149 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:38:04,149 INFO L82 PathProgramCache]: Analyzing trace with hash -98630869, now seen corresponding path program 1 times [2018-11-12 16:38:04,149 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:38:04,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:38:04,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:38:04,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:38:04,151 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:38:04,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:38:05,038 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 248 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-11-12 16:38:05,039 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:38:05,039 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:38:05,039 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 496 with the following transitions: [2018-11-12 16:38:05,041 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [165], [167], [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], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [714], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 16:38:05,059 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:38:05,059 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:38:05,189 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:38:06,711 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:38:06,711 INFO L272 AbstractInterpreter]: Visited 285 different actions 1128 times. Merged at 7 different actions 24 times. Never widened. Performed 22970 root evaluator evaluations with a maximum evaluation depth of 6. Performed 22970 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 5 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-12 16:38:06,721 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:38:06,722 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:38:06,722 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:38:06,722 INFO L192 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 [2018-11-12 16:38:06,742 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:38:06,742 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:38:06,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:38:06,927 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:38:07,471 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-12 16:38:08,242 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 234 proven. 41 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-11-12 16:38:08,243 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:38:09,011 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-12 16:38:09,806 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 61 proven. 277 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 16:38:09,828 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:38:09,828 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 17 [2018-11-12 16:38:09,828 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:38:09,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-12 16:38:09,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-12 16:38:09,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-11-12 16:38:09,830 INFO L87 Difference]: Start difference. First operand 11987 states and 14631 transitions. Second operand 12 states. [2018-11-12 16:38:28,956 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-11-12 16:38:41,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:38:41,212 INFO L93 Difference]: Finished difference Result 57457 states and 84773 transitions. [2018-11-12 16:38:41,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-11-12 16:38:41,213 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 495 [2018-11-12 16:38:41,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:38:41,537 INFO L225 Difference]: With dead ends: 57457 [2018-11-12 16:38:41,538 INFO L226 Difference]: Without dead ends: 45314 [2018-11-12 16:38:41,737 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1141 GetRequests, 1048 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2937 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1623, Invalid=7119, Unknown=0, NotChecked=0, Total=8742 [2018-11-12 16:38:41,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45314 states. [2018-11-12 16:38:42,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45314 to 43589. [2018-11-12 16:38:42,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43589 states. [2018-11-12 16:38:43,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43589 states to 43589 states and 57129 transitions. [2018-11-12 16:38:43,151 INFO L78 Accepts]: Start accepts. Automaton has 43589 states and 57129 transitions. Word has length 495 [2018-11-12 16:38:43,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:38:43,152 INFO L480 AbstractCegarLoop]: Abstraction has 43589 states and 57129 transitions. [2018-11-12 16:38:43,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-12 16:38:43,153 INFO L276 IsEmpty]: Start isEmpty. Operand 43589 states and 57129 transitions. [2018-11-12 16:38:43,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2018-11-12 16:38:43,182 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:38:43,183 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:38:43,183 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:38:43,184 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:38:43,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1650467190, now seen corresponding path program 1 times [2018-11-12 16:38:43,184 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:38:43,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:38:43,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:38:43,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:38:43,186 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:38:43,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:38:44,042 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2018-11-12 16:38:44,043 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:38:44,043 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 16:38:44,043 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:38:44,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:38:44,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:38:44,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:38:44,045 INFO L87 Difference]: Start difference. First operand 43589 states and 57129 transitions. Second operand 3 states. [2018-11-12 16:38:47,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:38:47,819 INFO L93 Difference]: Finished difference Result 91188 states and 123982 transitions. [2018-11-12 16:38:47,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:38:47,820 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 535 [2018-11-12 16:38:47,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:38:48,094 INFO L225 Difference]: With dead ends: 91188 [2018-11-12 16:38:48,094 INFO L226 Difference]: Without dead ends: 48533 [2018-11-12 16:38:48,400 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:38:48,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48533 states. [2018-11-12 16:38:49,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48533 to 48460. [2018-11-12 16:38:49,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48460 states. [2018-11-12 16:38:49,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48460 states to 48460 states and 60855 transitions. [2018-11-12 16:38:49,584 INFO L78 Accepts]: Start accepts. Automaton has 48460 states and 60855 transitions. Word has length 535 [2018-11-12 16:38:49,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:38:49,585 INFO L480 AbstractCegarLoop]: Abstraction has 48460 states and 60855 transitions. [2018-11-12 16:38:49,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:38:49,585 INFO L276 IsEmpty]: Start isEmpty. Operand 48460 states and 60855 transitions. [2018-11-12 16:38:49,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 600 [2018-11-12 16:38:49,634 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:38:49,634 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:38:49,634 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:38:49,635 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:38:49,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1850614388, now seen corresponding path program 1 times [2018-11-12 16:38:49,635 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:38:49,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:38:49,636 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:38:49,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:38:49,636 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:38:49,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:38:50,863 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-11-12 16:38:53,863 INFO L134 CoverageAnalysis]: Checked inductivity of 757 backedges. 172 proven. 450 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2018-11-12 16:38:53,863 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:38:53,863 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:38:53,863 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 600 with the following transitions: [2018-11-12 16:38:53,864 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [165], [167], [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], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [842], [847], [849], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [974], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 16:38:53,868 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:38:53,868 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:38:53,952 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:38:54,727 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:38:54,728 INFO L272 AbstractInterpreter]: Visited 211 different actions 825 times. Merged at 5 different actions 14 times. Never widened. Performed 18535 root evaluator evaluations with a maximum evaluation depth of 6. Performed 18535 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:38:54,740 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:38:54,740 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:38:56,315 INFO L227 lantSequenceWeakener]: Weakened 296 states. On average, predicates are now at 77.44% of their original sizes. [2018-11-12 16:38:56,316 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:39:03,455 INFO L415 sIntCurrentIteration]: We unified 598 AI predicates to 598 [2018-11-12 16:39:03,455 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:39:03,456 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:39:03,456 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [10] total 30 [2018-11-12 16:39:03,456 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:39:03,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-12 16:39:03,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-12 16:39:03,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2018-11-12 16:39:03,458 INFO L87 Difference]: Start difference. First operand 48460 states and 60855 transitions. Second operand 22 states. [2018-11-12 16:39:52,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:39:52,426 INFO L93 Difference]: Finished difference Result 100942 states and 125964 transitions. [2018-11-12 16:39:52,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-12 16:39:52,426 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 599 [2018-11-12 16:39:52,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:39:52,700 INFO L225 Difference]: With dead ends: 100942 [2018-11-12 16:39:52,701 INFO L226 Difference]: Without dead ends: 51113 [2018-11-12 16:39:52,911 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 616 GetRequests, 385 SyntacticMatches, 194 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3020 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=310, Invalid=1172, Unknown=0, NotChecked=0, Total=1482 [2018-11-12 16:39:52,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51113 states. [2018-11-12 16:39:53,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51113 to 51111. [2018-11-12 16:39:53,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51111 states. [2018-11-12 16:39:53,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51111 states to 51111 states and 63602 transitions. [2018-11-12 16:39:53,918 INFO L78 Accepts]: Start accepts. Automaton has 51111 states and 63602 transitions. Word has length 599 [2018-11-12 16:39:53,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:39:53,918 INFO L480 AbstractCegarLoop]: Abstraction has 51111 states and 63602 transitions. [2018-11-12 16:39:53,918 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-12 16:39:53,918 INFO L276 IsEmpty]: Start isEmpty. Operand 51111 states and 63602 transitions. [2018-11-12 16:39:53,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2018-11-12 16:39:53,960 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:39:53,961 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:39:53,961 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:39:53,961 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:39:53,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1307483380, now seen corresponding path program 1 times [2018-11-12 16:39:53,962 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:39:53,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:39:53,963 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:39:53,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:39:53,963 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:39:54,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:39:54,574 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 372 proven. 2 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2018-11-12 16:39:54,574 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:39:54,575 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:39:54,575 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 626 with the following transitions: [2018-11-12 16:39:54,575 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [165], [167], [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], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [714], [715], [719], [722], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1562], [1566], [1570], [1581], [1585], [1589], [1593], [1597], [1601], [1612], [1616], [1620], [1623], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 16:39:54,581 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:39:54,581 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:39:54,842 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-12 16:39:57,558 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-12 16:39:57,559 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-12 16:39:57,559 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-12 16:39:57,559 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:39:57,559 INFO L192 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 [2018-11-12 16:39:57,573 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:39:57,573 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:39:57,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:39:57,760 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:39:57,784 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-12 16:39:57,985 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:39:57,985 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 16:39:57,990 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 16:39:57,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 04:39:57 BoogieIcfgContainer [2018-11-12 16:39:57,991 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 16:39:57,991 INFO L168 Benchmark]: Toolchain (without parser) took 216625.39 ms. Allocated memory was 1.5 GB in the beginning and 4.7 GB in the end (delta: 3.2 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -799.6 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-11-12 16:39:57,993 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. [2018-11-12 16:39:57,993 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1242.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-11-12 16:39:57,994 INFO L168 Benchmark]: Boogie Procedure Inliner took 216.17 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -886.8 MB). Peak memory consumption was 31.2 MB. Max. memory is 7.1 GB. [2018-11-12 16:39:57,997 INFO L168 Benchmark]: Boogie Preprocessor took 160.49 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2018-11-12 16:39:57,998 INFO L168 Benchmark]: RCFGBuilder took 6067.45 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 292.8 MB). Peak memory consumption was 292.8 MB. Max. memory is 7.1 GB. [2018-11-12 16:39:57,998 INFO L168 Benchmark]: TraceAbstraction took 208933.54 ms. Allocated memory was 2.3 GB in the beginning and 4.7 GB in the end (delta: 2.4 GB). Free memory was 1.9 GB in the beginning and 2.2 GB in the end (delta: -325.7 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-11-12 16:39:58,007 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 1242.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 216.17 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -886.8 MB). Peak memory consumption was 31.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 160.49 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6067.45 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 292.8 MB). Peak memory consumption was 292.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208933.54 ms. Allocated memory was 2.3 GB in the beginning and 4.7 GB in the end (delta: 2.4 GB). Free memory was 1.9 GB in the beginning and 2.2 GB in the end (delta: -325.7 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: 58]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 58). Cancelled while BasicCegarLoop was analyzing trace of length 626 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while XnfDer was eliminating 1 quantified variables from 1 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 208.8s OverallTime, 10 OverallIterations, 5 TraceHistogramMax, 171.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3764 SDtfs, 20912 SDslu, 3351 SDs, 0 SdLazy, 42708 SolverSat, 5535 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 86.3s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 2107 GetRequests, 1733 SyntacticMatches, 195 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6257 ImplicationChecksByTransitivity, 13.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51111occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 7.5s AbstIntTime, 4 AbstIntIterations, 2 AbstIntStrong, 0.9980946723590104 AbsIntWeakeningRatio, 0.06473214285714286 AbsIntAvgWeakeningVarsNumRemoved, 8.440848214285714 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 4.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 2217 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 6.6s InterpolantComputationTime, 3458 NumberOfCodeBlocks, 3458 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 3942 ConstructedInterpolants, 0 QuantifiedInterpolants, 10572194 SizeOfPredicates, 7 NumberOfNonLiveVariables, 714 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 11 InterpolantComputations, 6 PerfectInterpolantSequences, 1976/2759 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown