java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label35_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 00:40:54,409 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 00:40:54,413 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 00:40:54,428 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 00:40:54,428 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 00:40:54,429 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 00:40:54,430 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 00:40:54,432 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 00:40:54,434 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 00:40:54,435 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 00:40:54,436 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 00:40:54,436 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 00:40:54,437 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 00:40:54,438 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 00:40:54,439 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 00:40:54,440 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 00:40:54,441 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 00:40:54,445 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 00:40:54,450 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 00:40:54,451 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 00:40:54,454 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 00:40:54,456 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 00:40:54,461 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 00:40:54,462 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 00:40:54,462 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 00:40:54,463 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 00:40:54,466 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 00:40:54,467 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 00:40:54,468 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 00:40:54,469 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 00:40:54,469 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 00:40:54,472 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 00:40:54,472 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 00:40:54,472 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 00:40:54,473 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 00:40:54,474 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 00:40:54,475 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 00:40:54,506 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 00:40:54,506 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 00:40:54,507 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 00:40:54,508 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 00:40:54,511 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 00:40:54,511 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 00:40:54,511 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 00:40:54,511 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 00:40:54,512 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 00:40:54,512 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 00:40:54,512 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 00:40:54,512 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 00:40:54,513 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 00:40:54,514 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 00:40:54,514 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 00:40:54,515 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 00:40:54,515 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 00:40:54,515 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 00:40:54,515 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 00:40:54,515 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 00:40:54,517 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 00:40:54,517 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 00:40:54,517 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 00:40:54,517 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 00:40:54,518 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:40:54,518 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 00:40:54,518 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 00:40:54,518 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 00:40:54,518 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 00:40:54,519 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 00:40:54,519 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 00:40:54,519 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 00:40:54,519 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 00:40:54,519 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 00:40:54,573 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 00:40:54,590 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 00:40:54,594 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 00:40:54,596 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 00:40:54,596 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 00:40:54,597 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label35_false-unreach-call.c [2018-11-07 00:40:54,670 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c91a4091/bb602aed6ab84931a915e5b341c6c85f/FLAG71255f2df [2018-11-07 00:40:55,407 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 00:40:55,408 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label35_false-unreach-call.c [2018-11-07 00:40:55,440 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c91a4091/bb602aed6ab84931a915e5b341c6c85f/FLAG71255f2df [2018-11-07 00:40:55,460 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c91a4091/bb602aed6ab84931a915e5b341c6c85f [2018-11-07 00:40:55,474 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 00:40:55,477 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 00:40:55,478 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 00:40:55,478 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 00:40:55,482 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 00:40:55,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:40:55" (1/1) ... [2018-11-07 00:40:55,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c2502f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:40:55, skipping insertion in model container [2018-11-07 00:40:55,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:40:55" (1/1) ... [2018-11-07 00:40:55,499 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 00:40:55,639 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 00:40:56,675 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:40:56,679 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 00:40:57,102 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:40:57,126 INFO L193 MainTranslator]: Completed translation [2018-11-07 00:40:57,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:40:57 WrapperNode [2018-11-07 00:40:57,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 00:40:57,128 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 00:40:57,128 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 00:40:57,129 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 00:40:57,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:40:57" (1/1) ... [2018-11-07 00:40:57,411 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:40:57" (1/1) ... [2018-11-07 00:40:57,422 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 00:40:57,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 00:40:57,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 00:40:57,422 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 00:40:57,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:40:57" (1/1) ... [2018-11-07 00:40:57,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:40:57" (1/1) ... [2018-11-07 00:40:57,451 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:40:57" (1/1) ... [2018-11-07 00:40:57,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:40:57" (1/1) ... [2018-11-07 00:40:57,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:40:57" (1/1) ... [2018-11-07 00:40:57,591 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:40:57" (1/1) ... [2018-11-07 00:40:57,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:40:57" (1/1) ... [2018-11-07 00:40:57,632 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 00:40:57,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 00:40:57,633 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 00:40:57,633 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 00:40:57,634 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:40:57" (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 00:40:57,704 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 00:40:57,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 00:40:57,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 00:40:57,705 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 00:40:57,705 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 00:40:57,706 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 00:40:57,706 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 00:40:57,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 00:40:57,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 00:40:57,706 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 00:40:57,706 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 00:41:06,637 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 00:41:06,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:41:06 BoogieIcfgContainer [2018-11-07 00:41:06,640 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 00:41:06,641 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 00:41:06,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 00:41:06,645 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 00:41:06,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:40:55" (1/3) ... [2018-11-07 00:41:06,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33dd58a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:41:06, skipping insertion in model container [2018-11-07 00:41:06,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:40:57" (2/3) ... [2018-11-07 00:41:06,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33dd58a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:41:06, skipping insertion in model container [2018-11-07 00:41:06,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:41:06" (3/3) ... [2018-11-07 00:41:06,651 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label35_false-unreach-call.c [2018-11-07 00:41:06,665 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 00:41:06,677 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 00:41:06,697 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 00:41:06,762 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 00:41:06,762 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 00:41:06,762 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 00:41:06,762 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 00:41:06,762 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 00:41:06,763 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 00:41:06,763 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 00:41:06,763 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 00:41:06,818 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-11-07 00:41:06,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-07 00:41:06,825 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:41:06,826 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:41:06,828 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:41:06,834 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:41:06,835 INFO L82 PathProgramCache]: Analyzing trace with hash 95572996, now seen corresponding path program 1 times [2018-11-07 00:41:06,837 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:41:06,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:41:06,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:41:06,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:41:06,886 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:41:06,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:41:07,194 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 00:41:07,197 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:41:07,197 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 00:41:07,198 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:41:07,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 00:41:07,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 00:41:07,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:41:07,223 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-11-07 00:41:16,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:41:16,575 INFO L93 Difference]: Finished difference Result 2164 states and 4009 transitions. [2018-11-07 00:41:16,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 00:41:16,577 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-11-07 00:41:16,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:41:16,627 INFO L225 Difference]: With dead ends: 2164 [2018-11-07 00:41:16,627 INFO L226 Difference]: Without dead ends: 1554 [2018-11-07 00:41:16,645 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 00:41:16,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2018-11-07 00:41:16,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1052. [2018-11-07 00:41:16,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2018-11-07 00:41:16,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1882 transitions. [2018-11-07 00:41:16,823 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1882 transitions. Word has length 14 [2018-11-07 00:41:16,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:41:16,824 INFO L480 AbstractCegarLoop]: Abstraction has 1052 states and 1882 transitions. [2018-11-07 00:41:16,824 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 00:41:16,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1882 transitions. [2018-11-07 00:41:16,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-11-07 00:41:16,831 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:41:16,832 INFO L375 BasicCegarLoop]: trace histogram [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 00:41:16,833 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:41:16,833 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:41:16,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1287363666, now seen corresponding path program 1 times [2018-11-07 00:41:16,834 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:41:16,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:41:16,835 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:41:16,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:41:16,836 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:41:16,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:41:17,226 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:41:17,226 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:41:17,227 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 00:41:17,227 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:41:17,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 00:41:17,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 00:41:17,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 00:41:17,229 INFO L87 Difference]: Start difference. First operand 1052 states and 1882 transitions. Second operand 5 states. [2018-11-07 00:41:23,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:41:23,977 INFO L93 Difference]: Finished difference Result 3031 states and 5537 transitions. [2018-11-07 00:41:23,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:41:23,978 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2018-11-07 00:41:23,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:41:24,002 INFO L225 Difference]: With dead ends: 3031 [2018-11-07 00:41:24,002 INFO L226 Difference]: Without dead ends: 1985 [2018-11-07 00:41:24,007 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:41:24,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2018-11-07 00:41:24,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1959. [2018-11-07 00:41:24,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2018-11-07 00:41:24,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3239 transitions. [2018-11-07 00:41:24,088 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3239 transitions. Word has length 86 [2018-11-07 00:41:24,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:41:24,089 INFO L480 AbstractCegarLoop]: Abstraction has 1959 states and 3239 transitions. [2018-11-07 00:41:24,089 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 00:41:24,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3239 transitions. [2018-11-07 00:41:24,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-11-07 00:41:24,096 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:41:24,096 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 00:41:24,097 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:41:24,097 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:41:24,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1162270682, now seen corresponding path program 1 times [2018-11-07 00:41:24,097 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:41:24,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:41:24,098 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:41:24,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:41:24,099 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:41:24,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:41:24,481 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:41:24,482 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:41:24,482 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:41:24,483 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 90 with the following transitions: [2018-11-07 00:41:24,485 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [722], [724], [727], [735], [743], [751], [759], [767], [775], [783], [791], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 00:41:24,566 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:41:24,566 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:41:25,927 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:41:46,332 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 00:41:46,333 INFO L272 AbstractInterpreter]: Visited 83 different actions 544 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 00:41:46,347 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:41:46,348 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 00:41:46,348 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:41:46,349 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 00:41:46,365 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:41:46,365 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 00:41:46,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:41:46,450 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 00:41:47,439 WARN L179 SmtUtils]: Spent 687.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2018-11-07 00:41:47,605 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:41:47,606 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 00:41:49,179 WARN L179 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 22 [2018-11-07 00:41:49,505 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:41:49,536 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 00:41:49,536 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2018-11-07 00:41:49,537 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:41:49,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:41:49,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:41:49,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-11-07 00:41:49,538 INFO L87 Difference]: Start difference. First operand 1959 states and 3239 transitions. Second operand 6 states. [2018-11-07 00:42:03,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:42:03,591 INFO L93 Difference]: Finished difference Result 7530 states and 12896 transitions. [2018-11-07 00:42:03,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 00:42:03,592 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 89 [2018-11-07 00:42:03,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:42:03,632 INFO L225 Difference]: With dead ends: 7530 [2018-11-07 00:42:03,632 INFO L226 Difference]: Without dead ends: 5577 [2018-11-07 00:42:03,650 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 172 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-11-07 00:42:03,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5577 states. [2018-11-07 00:42:03,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5577 to 5568. [2018-11-07 00:42:03,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5568 states. [2018-11-07 00:42:03,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5568 states to 5568 states and 9048 transitions. [2018-11-07 00:42:03,825 INFO L78 Accepts]: Start accepts. Automaton has 5568 states and 9048 transitions. Word has length 89 [2018-11-07 00:42:03,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:42:03,825 INFO L480 AbstractCegarLoop]: Abstraction has 5568 states and 9048 transitions. [2018-11-07 00:42:03,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:42:03,826 INFO L276 IsEmpty]: Start isEmpty. Operand 5568 states and 9048 transitions. [2018-11-07 00:42:03,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-11-07 00:42:03,830 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:42:03,830 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 00:42:03,830 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:42:03,830 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:42:03,831 INFO L82 PathProgramCache]: Analyzing trace with hash -5951310, now seen corresponding path program 1 times [2018-11-07 00:42:03,831 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:42:03,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:42:03,832 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:42:03,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:42:03,832 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:42:03,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:42:04,108 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:42:04,799 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:42:04,800 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:42:04,800 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:42:04,800 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 103 with the following transitions: [2018-11-07 00:42:04,801 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [722], [724], [727], [735], [743], [751], [759], [767], [775], [783], [791], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 00:42:04,808 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:42:04,808 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:42:05,848 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:42:13,468 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 00:42:13,469 INFO L272 AbstractInterpreter]: Visited 96 different actions 274 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 00:42:13,512 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:42:13,512 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 00:42:13,512 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:42:13,513 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 00:42:13,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:42:13,530 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 00:42:13,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:42:13,610 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 00:42:13,759 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:42:13,760 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 00:42:14,008 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:42:14,032 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:42:14,032 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-11-07 00:42:14,032 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:42:14,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 00:42:14,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 00:42:14,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:42:14,034 INFO L87 Difference]: Start difference. First operand 5568 states and 9048 transitions. Second operand 3 states. [2018-11-07 00:42:17,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:42:17,205 INFO L93 Difference]: Finished difference Result 13756 states and 22315 transitions. [2018-11-07 00:42:17,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 00:42:17,205 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2018-11-07 00:42:17,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:42:17,251 INFO L225 Difference]: With dead ends: 13756 [2018-11-07 00:42:17,252 INFO L226 Difference]: Without dead ends: 8194 [2018-11-07 00:42:17,295 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 203 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:42:17,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8194 states. [2018-11-07 00:42:17,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8194 to 8193. [2018-11-07 00:42:17,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8193 states. [2018-11-07 00:42:17,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8193 states to 8193 states and 12487 transitions. [2018-11-07 00:42:17,569 INFO L78 Accepts]: Start accepts. Automaton has 8193 states and 12487 transitions. Word has length 102 [2018-11-07 00:42:17,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:42:17,570 INFO L480 AbstractCegarLoop]: Abstraction has 8193 states and 12487 transitions. [2018-11-07 00:42:17,570 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 00:42:17,570 INFO L276 IsEmpty]: Start isEmpty. Operand 8193 states and 12487 transitions. [2018-11-07 00:42:17,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-11-07 00:42:17,573 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:42:17,574 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 00:42:17,574 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:42:17,574 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:42:17,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1202922802, now seen corresponding path program 1 times [2018-11-07 00:42:17,576 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:42:17,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:42:17,577 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:42:17,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:42:17,577 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:42:17,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:42:17,874 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:42:17,875 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:42:17,875 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 00:42:17,875 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:42:17,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 00:42:17,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 00:42:17,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 00:42:17,877 INFO L87 Difference]: Start difference. First operand 8193 states and 12487 transitions. Second operand 5 states. [2018-11-07 00:42:25,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:42:25,513 INFO L93 Difference]: Finished difference Result 25050 states and 40610 transitions. [2018-11-07 00:42:25,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 00:42:25,516 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2018-11-07 00:42:25,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:42:25,625 INFO L225 Difference]: With dead ends: 25050 [2018-11-07 00:42:25,626 INFO L226 Difference]: Without dead ends: 16863 [2018-11-07 00:42:25,684 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:42:25,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16863 states. [2018-11-07 00:42:26,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16863 to 16726. [2018-11-07 00:42:26,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16726 states. [2018-11-07 00:42:26,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16726 states to 16726 states and 24149 transitions. [2018-11-07 00:42:26,193 INFO L78 Accepts]: Start accepts. Automaton has 16726 states and 24149 transitions. Word has length 104 [2018-11-07 00:42:26,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:42:26,196 INFO L480 AbstractCegarLoop]: Abstraction has 16726 states and 24149 transitions. [2018-11-07 00:42:26,196 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 00:42:26,196 INFO L276 IsEmpty]: Start isEmpty. Operand 16726 states and 24149 transitions. [2018-11-07 00:42:26,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-11-07 00:42:26,203 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:42:26,204 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 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 00:42:26,204 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:42:26,204 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:42:26,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1301680348, now seen corresponding path program 1 times [2018-11-07 00:42:26,210 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:42:26,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:42:26,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:42:26,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:42:26,211 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:42:26,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:42:26,528 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:42:26,962 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-07 00:42:26,962 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:42:26,963 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:42:26,963 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 180 with the following transitions: [2018-11-07 00:42:26,963 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [722], [724], [727], [735], [743], [751], [759], [767], [775], [783], [791], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1290], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 00:42:26,971 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:42:26,972 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:42:27,773 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:42:43,887 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 00:42:43,887 INFO L272 AbstractInterpreter]: Visited 99 different actions 563 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 00:42:43,897 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:42:43,897 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 00:42:43,897 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:42:43,897 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 00:42:43,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:42:43,906 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 00:42:43,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:42:43,986 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 00:42:44,209 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:42:44,210 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 00:42:44,449 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-11-07 00:42:44,815 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:42:44,835 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 00:42:44,835 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-07 00:42:44,835 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 00:42:44,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 00:42:44,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 00:42:44,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-11-07 00:42:44,837 INFO L87 Difference]: Start difference. First operand 16726 states and 24149 transitions. Second operand 9 states. [2018-11-07 00:42:50,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:42:50,963 INFO L93 Difference]: Finished difference Result 32643 states and 47630 transitions. [2018-11-07 00:42:50,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 00:42:50,968 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 179 [2018-11-07 00:42:50,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:42:51,020 INFO L225 Difference]: With dead ends: 32643 [2018-11-07 00:42:51,020 INFO L226 Difference]: Without dead ends: 13239 [2018-11-07 00:42:51,061 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 356 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2018-11-07 00:42:51,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13239 states. [2018-11-07 00:42:51,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13239 to 13172. [2018-11-07 00:42:51,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13172 states. [2018-11-07 00:42:51,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13172 states to 13172 states and 15477 transitions. [2018-11-07 00:42:51,360 INFO L78 Accepts]: Start accepts. Automaton has 13172 states and 15477 transitions. Word has length 179 [2018-11-07 00:42:51,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:42:51,360 INFO L480 AbstractCegarLoop]: Abstraction has 13172 states and 15477 transitions. [2018-11-07 00:42:51,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 00:42:51,360 INFO L276 IsEmpty]: Start isEmpty. Operand 13172 states and 15477 transitions. [2018-11-07 00:42:51,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-11-07 00:42:51,368 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:42:51,368 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:42:51,368 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:42:51,369 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:42:51,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1103957971, now seen corresponding path program 1 times [2018-11-07 00:42:51,369 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:42:51,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:42:51,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:42:51,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:42:51,370 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:42:51,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:42:51,628 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-07 00:42:51,628 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:42:51,628 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 00:42:51,628 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:42:51,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 00:42:51,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 00:42:51,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:42:51,630 INFO L87 Difference]: Start difference. First operand 13172 states and 15477 transitions. Second operand 3 states. [2018-11-07 00:42:55,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:42:55,614 INFO L93 Difference]: Finished difference Result 34178 states and 40931 transitions. [2018-11-07 00:42:55,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 00:42:55,615 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 268 [2018-11-07 00:42:55,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:42:55,679 INFO L225 Difference]: With dead ends: 34178 [2018-11-07 00:42:55,679 INFO L226 Difference]: Without dead ends: 17559 [2018-11-07 00:42:55,709 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 00:42:55,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17559 states. [2018-11-07 00:42:56,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17559 to 17550. [2018-11-07 00:42:56,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17550 states. [2018-11-07 00:42:56,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17550 states to 17550 states and 20449 transitions. [2018-11-07 00:42:56,039 INFO L78 Accepts]: Start accepts. Automaton has 17550 states and 20449 transitions. Word has length 268 [2018-11-07 00:42:56,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:42:56,040 INFO L480 AbstractCegarLoop]: Abstraction has 17550 states and 20449 transitions. [2018-11-07 00:42:56,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 00:42:56,040 INFO L276 IsEmpty]: Start isEmpty. Operand 17550 states and 20449 transitions. [2018-11-07 00:42:56,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-11-07 00:42:56,050 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:42:56,051 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:42:56,051 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:42:56,051 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:42:56,051 INFO L82 PathProgramCache]: Analyzing trace with hash 329323695, now seen corresponding path program 1 times [2018-11-07 00:42:56,051 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:42:56,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:42:56,052 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:42:56,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:42:56,053 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:42:56,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:42:56,905 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:42:56,905 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:42:56,905 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:42:56,906 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 363 with the following transitions: [2018-11-07 00:42:56,907 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [45], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [115], [119], [123], [127], [138], [142], [146], [150], [154], [158], [169], [173], [177], [181], [185], [189], [193], [204], [208], [212], [216], [227], [231], [235], [239], [250], [254], [258], [262], [266], [270], [273], [710], [711], [718], [722], [724], [727], [735], [743], [751], [759], [767], [775], [783], [791], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-11-07 00:42:56,931 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:42:56,931 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:43:04,494 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:43:47,277 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 00:43:47,278 INFO L272 AbstractInterpreter]: Visited 356 different actions 1054 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 00:43:47,287 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:43:47,287 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 00:43:47,287 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:43:47,287 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 00:43:47,298 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:43:47,298 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 00:43:47,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:43:47,413 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 00:43:47,647 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:43:47,647 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 00:43:48,142 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:43:48,164 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 00:43:48,165 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 11 [2018-11-07 00:43:48,165 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:43:48,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:43:48,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:43:48,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-11-07 00:43:48,167 INFO L87 Difference]: Start difference. First operand 17550 states and 20449 transitions. Second operand 6 states. [2018-11-07 00:43:53,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:43:53,902 INFO L93 Difference]: Finished difference Result 37294 states and 43511 transitions. [2018-11-07 00:43:53,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 00:43:53,903 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 362 [2018-11-07 00:43:53,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:43:53,960 INFO L225 Difference]: With dead ends: 37294 [2018-11-07 00:43:53,960 INFO L226 Difference]: Without dead ends: 18869 [2018-11-07 00:43:53,984 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 733 GetRequests, 722 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-11-07 00:43:53,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18869 states. [2018-11-07 00:43:54,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18869 to 17558. [2018-11-07 00:43:54,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17558 states. [2018-11-07 00:43:54,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17558 states to 17558 states and 20459 transitions. [2018-11-07 00:43:54,302 INFO L78 Accepts]: Start accepts. Automaton has 17558 states and 20459 transitions. Word has length 362 [2018-11-07 00:43:54,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:43:54,302 INFO L480 AbstractCegarLoop]: Abstraction has 17558 states and 20459 transitions. [2018-11-07 00:43:54,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:43:54,303 INFO L276 IsEmpty]: Start isEmpty. Operand 17558 states and 20459 transitions. [2018-11-07 00:43:54,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2018-11-07 00:43:54,322 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:43:54,323 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-11-07 00:43:54,323 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:43:54,323 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:43:54,323 INFO L82 PathProgramCache]: Analyzing trace with hash 2090429425, now seen corresponding path program 1 times [2018-11-07 00:43:54,324 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:43:54,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:43:54,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:43:54,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:43:54,325 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:43:54,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:43:55,100 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 31 proven. 164 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-11-07 00:43:55,100 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:43:55,101 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:43:55,101 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 447 with the following transitions: [2018-11-07 00:43:55,101 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [722], [724], [727], [735], [743], [751], [759], [767], [775], [783], [791], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1266], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2138], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 00:43:55,109 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:43:55,109 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:43:56,664 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 00:44:36,963 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-07 00:44:36,964 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-07 00:44:36,965 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 00:44:36,965 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:44:36,965 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 00:44:36,973 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:44:36,973 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 00:44:37,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:44:37,111 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 00:44:37,112 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-07 00:44:37,313 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 00:44:37,313 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 00:44:37,318 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 00:44:37,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:44:37 BoogieIcfgContainer [2018-11-07 00:44:37,318 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 00:44:37,319 INFO L168 Benchmark]: Toolchain (without parser) took 221843.28 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 62.4 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-11-07 00:44:37,320 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 00:44:37,321 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1649.41 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: 140.0 MB). Peak memory consumption was 140.0 MB. Max. memory is 7.1 GB. [2018-11-07 00:44:37,321 INFO L168 Benchmark]: Boogie Procedure Inliner took 293.67 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 767.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -949.8 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. [2018-11-07 00:44:37,322 INFO L168 Benchmark]: Boogie Preprocessor took 210.45 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: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2018-11-07 00:44:37,323 INFO L168 Benchmark]: RCFGBuilder took 9007.44 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 474.0 MB). Peak memory consumption was 474.0 MB. Max. memory is 7.1 GB. [2018-11-07 00:44:37,324 INFO L168 Benchmark]: TraceAbstraction took 210676.96 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 1.3 GB in the end (delta: 384.2 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-11-07 00:44:37,331 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1649.41 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: 140.0 MB). Peak memory consumption was 140.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 293.67 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 767.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -949.8 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 210.45 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: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9007.44 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 474.0 MB). Peak memory consumption was 474.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210676.96 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 1.3 GB in the end (delta: 384.2 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 29]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 29). Cancelled while BasicCegarLoop was analyzing trace of length 447 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 210.5s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 57.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2869 SDtfs, 13860 SDslu, 1800 SDs, 0 SdLazy, 21138 SolverSat, 6895 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 48.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1536 GetRequests, 1466 SyntacticMatches, 11 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 6.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17558occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 139.7s AbstIntTime, 5 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 2062 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 8.5s InterpolantComputationTime, 1936 NumberOfCodeBlocks, 1936 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 2652 ConstructedInterpolants, 88 QuantifiedInterpolants, 2475949 SizeOfPredicates, 9 NumberOfNonLiveVariables, 1408 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 16 InterpolantComputations, 8 PerfectInterpolantSequences, 413/446 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown