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/Problem14_label31_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 00:18:18,531 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 00:18:18,533 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 00:18:18,545 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 00:18:18,546 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 00:18:18,547 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 00:18:18,548 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 00:18:18,550 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 00:18:18,551 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 00:18:18,552 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 00:18:18,553 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 00:18:18,553 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 00:18:18,554 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 00:18:18,555 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 00:18:18,557 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 00:18:18,557 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 00:18:18,558 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 00:18:18,560 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 00:18:18,562 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 00:18:18,564 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 00:18:18,565 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 00:18:18,566 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 00:18:18,569 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 00:18:18,569 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 00:18:18,569 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 00:18:18,570 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 00:18:18,571 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 00:18:18,572 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 00:18:18,573 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 00:18:18,574 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 00:18:18,574 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 00:18:18,575 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-07 00:18:18,578 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 00:18:18,606 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 00:18:18,607 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 00:18:18,608 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 00:18:18,608 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 00:18:18,608 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 00:18:18,609 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 00:18:18,609 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 00:18:18,609 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 00:18:18,609 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 00:18:18,609 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 00:18:18,610 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 00:18:18,610 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 00:18:18,611 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 00:18:18,611 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 00:18:18,611 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 00:18:18,611 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 00:18:18,612 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 00:18:18,612 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 00:18:18,612 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 00:18:18,612 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 00:18:18,612 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 00:18:18,614 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 00:18:18,614 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 00:18:18,615 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 00:18:18,615 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:18:18,615 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 00:18:18,615 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 00:18:18,615 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 00:18:18,616 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 00:18:18,616 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 00:18:18,616 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 00:18:18,617 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 00:18:18,617 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 00:18:18,617 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 00:18:18,667 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 00:18:18,684 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 00:18:18,689 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 00:18:18,691 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 00:18:18,691 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 00:18:18,692 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label31_false-unreach-call_false-termination.c [2018-11-07 00:18:18,763 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9edb03f60/d6613834a67f4303bfcfa8e421d28c45/FLAG72cdae70b [2018-11-07 00:18:19,355 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 00:18:19,356 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label31_false-unreach-call_false-termination.c [2018-11-07 00:18:19,376 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9edb03f60/d6613834a67f4303bfcfa8e421d28c45/FLAG72cdae70b [2018-11-07 00:18:19,398 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9edb03f60/d6613834a67f4303bfcfa8e421d28c45 [2018-11-07 00:18:19,413 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 00:18:19,415 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 00:18:19,416 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 00:18:19,416 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 00:18:19,423 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 00:18:19,425 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:18:19" (1/1) ... [2018-11-07 00:18:19,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3eddc215 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:18:19, skipping insertion in model container [2018-11-07 00:18:19,428 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:18:19" (1/1) ... [2018-11-07 00:18:19,440 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 00:18:19,516 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 00:18:20,088 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:18:20,094 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 00:18:20,311 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:18:20,332 INFO L193 MainTranslator]: Completed translation [2018-11-07 00:18:20,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:18:20 WrapperNode [2018-11-07 00:18:20,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 00:18:20,334 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 00:18:20,334 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 00:18:20,334 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 00:18:20,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:18:20" (1/1) ... [2018-11-07 00:18:20,475 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:18:20" (1/1) ... [2018-11-07 00:18:20,492 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 00:18:20,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 00:18:20,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 00:18:20,493 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 00:18:20,505 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:18:20" (1/1) ... [2018-11-07 00:18:20,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:18:20" (1/1) ... [2018-11-07 00:18:20,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:18:20" (1/1) ... [2018-11-07 00:18:20,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:18:20" (1/1) ... [2018-11-07 00:18:20,574 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:18:20" (1/1) ... [2018-11-07 00:18:20,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:18:20" (1/1) ... [2018-11-07 00:18:20,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:18:20" (1/1) ... [2018-11-07 00:18:20,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 00:18:20,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 00:18:20,609 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 00:18:20,609 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 00:18:20,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:18:20" (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 00:18:20,691 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 00:18:20,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 00:18:20,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 00:18:20,692 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 00:18:20,692 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 00:18:20,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 00:18:20,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 00:18:20,695 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 00:18:20,695 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 00:18:24,475 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 00:18:24,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:18:24 BoogieIcfgContainer [2018-11-07 00:18:24,476 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 00:18:24,477 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 00:18:24,477 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 00:18:24,481 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 00:18:24,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:18:19" (1/3) ... [2018-11-07 00:18:24,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@281c9871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:18:24, skipping insertion in model container [2018-11-07 00:18:24,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:18:20" (2/3) ... [2018-11-07 00:18:24,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@281c9871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:18:24, skipping insertion in model container [2018-11-07 00:18:24,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:18:24" (3/3) ... [2018-11-07 00:18:24,487 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label31_false-unreach-call_false-termination.c [2018-11-07 00:18:24,497 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 00:18:24,506 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 00:18:24,520 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 00:18:24,558 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 00:18:24,558 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 00:18:24,558 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 00:18:24,558 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 00:18:24,559 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 00:18:24,559 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 00:18:24,559 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 00:18:24,559 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 00:18:24,587 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-07 00:18:24,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-07 00:18:24,595 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:18:24,597 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:18:24,600 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:18:24,605 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:18:24,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1186927676, now seen corresponding path program 1 times [2018-11-07 00:18:24,608 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:18:24,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:18:24,663 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:18:24,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:18:24,663 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:18:24,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:18:25,051 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 00:18:25,056 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:18:25,056 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 00:18:25,056 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:18:25,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 00:18:25,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 00:18:25,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:18:25,081 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-11-07 00:18:27,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:18:27,103 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-11-07 00:18:27,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 00:18:27,107 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2018-11-07 00:18:27,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:18:27,126 INFO L225 Difference]: With dead ends: 691 [2018-11-07 00:18:27,127 INFO L226 Difference]: Without dead ends: 434 [2018-11-07 00:18:27,136 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:18:27,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-11-07 00:18:27,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-11-07 00:18:27,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-11-07 00:18:27,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 767 transitions. [2018-11-07 00:18:27,222 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 767 transitions. Word has length 30 [2018-11-07 00:18:27,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:18:27,222 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 767 transitions. [2018-11-07 00:18:27,223 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 00:18:27,223 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 767 transitions. [2018-11-07 00:18:27,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-11-07 00:18:27,229 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:18:27,230 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:18:27,230 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:18:27,231 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:18:27,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1887120035, now seen corresponding path program 1 times [2018-11-07 00:18:27,231 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:18:27,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:18:27,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:18:27,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:18:27,236 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:18:27,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:18:27,531 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:18:27,532 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:18:27,532 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 00:18:27,532 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:18:27,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 00:18:27,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 00:18:27,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 00:18:27,535 INFO L87 Difference]: Start difference. First operand 434 states and 767 transitions. Second operand 5 states. [2018-11-07 00:18:31,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:18:31,089 INFO L93 Difference]: Finished difference Result 1416 states and 2580 transitions. [2018-11-07 00:18:31,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 00:18:31,092 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2018-11-07 00:18:31,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:18:31,106 INFO L225 Difference]: With dead ends: 1416 [2018-11-07 00:18:31,106 INFO L226 Difference]: Without dead ends: 988 [2018-11-07 00:18:31,113 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 [2018-11-07 00:18:31,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2018-11-07 00:18:31,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 973. [2018-11-07 00:18:31,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 973 states. [2018-11-07 00:18:31,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1540 transitions. [2018-11-07 00:18:31,191 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1540 transitions. Word has length 107 [2018-11-07 00:18:31,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:18:31,192 INFO L480 AbstractCegarLoop]: Abstraction has 973 states and 1540 transitions. [2018-11-07 00:18:31,192 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 00:18:31,192 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1540 transitions. [2018-11-07 00:18:31,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-11-07 00:18:31,199 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:18:31,200 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 00:18:31,200 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:18:31,200 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:18:31,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1620618787, now seen corresponding path program 1 times [2018-11-07 00:18:31,201 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:18:31,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:18:31,202 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:18:31,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:18:31,202 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:18:31,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:18:31,539 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:18:31,540 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:18:31,540 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:18:31,540 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:18:31,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:18:31,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:18:31,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:18:31,542 INFO L87 Difference]: Start difference. First operand 973 states and 1540 transitions. Second operand 6 states. [2018-11-07 00:18:34,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:18:34,703 INFO L93 Difference]: Finished difference Result 2347 states and 3916 transitions. [2018-11-07 00:18:34,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:18:34,704 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2018-11-07 00:18:34,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:18:34,715 INFO L225 Difference]: With dead ends: 2347 [2018-11-07 00:18:34,715 INFO L226 Difference]: Without dead ends: 1380 [2018-11-07 00:18:34,719 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 00:18:34,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1380 states. [2018-11-07 00:18:34,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1380 to 1352. [2018-11-07 00:18:34,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2018-11-07 00:18:34,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 2126 transitions. [2018-11-07 00:18:34,771 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 2126 transitions. Word has length 171 [2018-11-07 00:18:34,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:18:34,772 INFO L480 AbstractCegarLoop]: Abstraction has 1352 states and 2126 transitions. [2018-11-07 00:18:34,772 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:18:34,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 2126 transitions. [2018-11-07 00:18:34,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-11-07 00:18:34,776 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:18:34,776 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:18:34,777 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:18:34,777 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:18:34,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1455943783, now seen corresponding path program 1 times [2018-11-07 00:18:34,777 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:18:34,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:18:34,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:18:34,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:18:34,779 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:18:34,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:18:35,033 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 118 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:18:35,034 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:18:35,034 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:18:35,034 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 182 with the following transitions: [2018-11-07 00:18:35,036 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [522], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 00:18:35,117 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:18:35,117 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:18:36,493 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:18:37,009 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:18:37,011 INFO L272 AbstractInterpreter]: Visited 82 different actions 82 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 00:18:37,051 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:18:37,052 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:18:38,894 INFO L227 lantSequenceWeakener]: Weakened 173 states. On average, predicates are now at 77.7% of their original sizes. [2018-11-07 00:18:38,894 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:18:39,198 INFO L415 sIntCurrentIteration]: We unified 180 AI predicates to 180 [2018-11-07 00:18:39,198 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:18:39,199 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:18:39,200 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 00:18:39,200 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:18:39,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 00:18:39,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 00:18:39,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 00:18:39,201 INFO L87 Difference]: Start difference. First operand 1352 states and 2126 transitions. Second operand 7 states. [2018-11-07 00:18:54,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:18:54,676 INFO L93 Difference]: Finished difference Result 2883 states and 4473 transitions. [2018-11-07 00:18:54,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:18:54,676 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2018-11-07 00:18:54,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:18:54,689 INFO L225 Difference]: With dead ends: 2883 [2018-11-07 00:18:54,689 INFO L226 Difference]: Without dead ends: 1537 [2018-11-07 00:18:54,696 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 181 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:18:54,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1537 states. [2018-11-07 00:18:54,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1537 to 1535. [2018-11-07 00:18:54,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1535 states. [2018-11-07 00:18:54,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 2316 transitions. [2018-11-07 00:18:54,758 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 2316 transitions. Word has length 181 [2018-11-07 00:18:54,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:18:54,759 INFO L480 AbstractCegarLoop]: Abstraction has 1535 states and 2316 transitions. [2018-11-07 00:18:54,759 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 00:18:54,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 2316 transitions. [2018-11-07 00:18:54,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-11-07 00:18:54,765 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:18:54,766 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:18:54,766 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:18:54,767 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:18:54,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1502222280, now seen corresponding path program 1 times [2018-11-07 00:18:54,767 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:18:54,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:18:54,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:18:54,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:18:54,771 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:18:54,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:18:55,377 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-11-07 00:18:55,378 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:18:55,378 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:18:55,378 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 267 with the following transitions: [2018-11-07 00:18:55,379 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [551], [554], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 00:18:55,385 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:18:55,385 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:18:56,097 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:18:58,833 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:18:58,833 INFO L272 AbstractInterpreter]: Visited 94 different actions 181 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 00:18:58,845 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:18:58,845 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:19:01,221 INFO L227 lantSequenceWeakener]: Weakened 86 states. On average, predicates are now at 78.48% of their original sizes. [2018-11-07 00:19:01,221 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:19:23,468 INFO L415 sIntCurrentIteration]: We unified 265 AI predicates to 265 [2018-11-07 00:19:23,468 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:19:23,468 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:19:23,469 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [7] total 25 [2018-11-07 00:19:23,469 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:19:23,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-07 00:19:23,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-07 00:19:23,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2018-11-07 00:19:23,471 INFO L87 Difference]: Start difference. First operand 1535 states and 2316 transitions. Second operand 20 states. [2018-11-07 00:21:42,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:21:42,125 INFO L93 Difference]: Finished difference Result 3891 states and 5669 transitions. [2018-11-07 00:21:42,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-07 00:21:42,126 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 266 [2018-11-07 00:21:42,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:21:42,138 INFO L225 Difference]: With dead ends: 3891 [2018-11-07 00:21:42,138 INFO L226 Difference]: Without dead ends: 2545 [2018-11-07 00:21:42,145 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 272 GetRequests, 227 SyntacticMatches, 20 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 23.7s TimeCoverageRelationStatistics Valid=148, Invalid=554, Unknown=0, NotChecked=0, Total=702 [2018-11-07 00:21:42,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2545 states. [2018-11-07 00:21:42,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2545 to 2296. [2018-11-07 00:21:42,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2296 states. [2018-11-07 00:21:42,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2296 states to 2296 states and 3125 transitions. [2018-11-07 00:21:42,314 INFO L78 Accepts]: Start accepts. Automaton has 2296 states and 3125 transitions. Word has length 266 [2018-11-07 00:21:42,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:21:42,315 INFO L480 AbstractCegarLoop]: Abstraction has 2296 states and 3125 transitions. [2018-11-07 00:21:42,315 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-07 00:21:42,315 INFO L276 IsEmpty]: Start isEmpty. Operand 2296 states and 3125 transitions. [2018-11-07 00:21:42,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-11-07 00:21:42,322 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:21:42,323 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:21:42,323 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:21:42,323 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:21:42,323 INFO L82 PathProgramCache]: Analyzing trace with hash -669504180, now seen corresponding path program 1 times [2018-11-07 00:21:42,324 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:21:42,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:21:42,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:21:42,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:21:42,325 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:21:42,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:21:43,120 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 223 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:21:43,120 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:21:43,120 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:21:43,121 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 293 with the following transitions: [2018-11-07 00:21:43,121 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [141], [143], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 00:21:43,127 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:21:43,127 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:21:43,835 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:21:48,785 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:21:48,786 INFO L272 AbstractInterpreter]: Visited 120 different actions 234 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 00:21:48,788 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:21:48,788 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:21:51,207 INFO L227 lantSequenceWeakener]: Weakened 160 states. On average, predicates are now at 77.91% of their original sizes. [2018-11-07 00:21:51,207 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:21:57,129 INFO L415 sIntCurrentIteration]: We unified 291 AI predicates to 291 [2018-11-07 00:21:57,130 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:21:57,130 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:21:57,130 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [14] total 28 [2018-11-07 00:21:57,130 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:21:57,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 00:21:57,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 00:21:57,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2018-11-07 00:21:57,132 INFO L87 Difference]: Start difference. First operand 2296 states and 3125 transitions. Second operand 16 states. Received shutdown request... [2018-11-07 00:22:23,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 00:22:23,914 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 00:22:23,919 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 00:22:23,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:22:23 BoogieIcfgContainer [2018-11-07 00:22:23,919 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 00:22:23,920 INFO L168 Benchmark]: Toolchain (without parser) took 244506.20 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-11-07 00:22:23,922 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 00:22:23,923 INFO L168 Benchmark]: CACSL2BoogieTranslator took 916.80 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-11-07 00:22:23,923 INFO L168 Benchmark]: Boogie Procedure Inliner took 158.39 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 734.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -839.4 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. [2018-11-07 00:22:23,924 INFO L168 Benchmark]: Boogie Preprocessor took 115.92 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 00:22:23,925 INFO L168 Benchmark]: RCFGBuilder took 3867.72 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 129.3 MB). Peak memory consumption was 129.3 MB. Max. memory is 7.1 GB. [2018-11-07 00:22:23,926 INFO L168 Benchmark]: TraceAbstraction took 239442.36 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.8 GB in the end (delta: -744.2 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-11-07 00:22:23,931 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 916.80 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 158.39 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 734.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -839.4 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.92 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3867.72 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 129.3 MB). Peak memory consumption was 129.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 239442.36 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.8 GB in the end (delta: -744.2 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 73). Cancelled while BasicCegarLoop was constructing difference of abstraction (2296states) and FLOYD_HOARE automaton (currently 9 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (109 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 239.3s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 189.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 764 SDtfs, 5761 SDslu, 709 SDs, 0 SdLazy, 6383 SolverSat, 1122 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 72.5s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 773 GetRequests, 686 SyntacticMatches, 23 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 31.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2296occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 11.1s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9947301315374919 AbsIntWeakeningRatio, 0.12228260869565218 AbsIntAvgWeakeningVarsNumRemoved, 326.72690217391306 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 294 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 1047 NumberOfCodeBlocks, 1047 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1041 ConstructedInterpolants, 0 QuantifiedInterpolants, 1184423 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 679/754 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown