java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label58_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 08:18:02,546 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 08:18:02,548 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 08:18:02,567 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 08:18:02,568 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 08:18:02,569 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 08:18:02,570 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 08:18:02,572 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 08:18:02,574 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 08:18:02,575 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 08:18:02,575 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 08:18:02,576 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 08:18:02,577 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 08:18:02,578 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 08:18:02,579 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 08:18:02,580 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 08:18:02,581 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 08:18:02,584 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 08:18:02,586 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 08:18:02,587 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 08:18:02,592 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 08:18:02,593 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 08:18:02,598 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 08:18:02,599 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 08:18:02,599 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 08:18:02,600 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 08:18:02,601 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 08:18:02,601 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 08:18:02,604 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 08:18:02,606 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 08:18:02,606 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 08:18:02,606 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 08:18:02,608 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 08:18:02,609 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 08:18:02,610 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 08:18:02,611 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 08:18:02,612 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 08:18:02,643 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 08:18:02,643 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 08:18:02,644 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 08:18:02,644 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 08:18:02,645 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 08:18:02,650 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 08:18:02,650 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 08:18:02,650 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 08:18:02,650 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 08:18:02,651 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 08:18:02,651 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 08:18:02,651 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 08:18:02,651 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 08:18:02,651 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 08:18:02,653 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 08:18:02,653 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 08:18:02,653 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 08:18:02,655 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 08:18:02,656 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 08:18:02,656 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 08:18:02,656 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 08:18:02,656 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 08:18:02,656 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 08:18:02,657 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 08:18:02,657 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 08:18:02,657 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 08:18:02,657 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:18:02,658 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 08:18:02,658 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 08:18:02,658 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 08:18:02,658 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 08:18:02,658 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 08:18:02,659 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 08:18:02,659 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 08:18:02,659 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 08:18:02,659 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 08:18:02,731 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 08:18:02,748 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 08:18:02,752 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 08:18:02,754 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 08:18:02,754 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 08:18:02,755 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label58_true-unreach-call.c [2018-10-27 08:18:02,828 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3a8d0c127/e67ca23f8d274fb8bacc3f1ed35f8c16/FLAG74a656091 [2018-10-27 08:18:03,588 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 08:18:03,589 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label58_true-unreach-call.c [2018-10-27 08:18:03,618 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3a8d0c127/e67ca23f8d274fb8bacc3f1ed35f8c16/FLAG74a656091 [2018-10-27 08:18:03,639 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3a8d0c127/e67ca23f8d274fb8bacc3f1ed35f8c16 [2018-10-27 08:18:03,651 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 08:18:03,653 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 08:18:03,654 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 08:18:03,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 08:18:03,658 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 08:18:03,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:18:03" (1/1) ... [2018-10-27 08:18:03,663 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f32220e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:03, skipping insertion in model container [2018-10-27 08:18:03,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:18:03" (1/1) ... [2018-10-27 08:18:03,675 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 08:18:03,784 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 08:18:04,606 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:18:04,610 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 08:18:04,992 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:18:05,018 INFO L193 MainTranslator]: Completed translation [2018-10-27 08:18:05,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:05 WrapperNode [2018-10-27 08:18:05,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 08:18:05,020 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 08:18:05,020 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 08:18:05,020 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 08:18:05,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:05" (1/1) ... [2018-10-27 08:18:05,081 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:05" (1/1) ... [2018-10-27 08:18:05,426 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 08:18:05,427 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 08:18:05,427 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 08:18:05,427 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 08:18:05,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:05" (1/1) ... [2018-10-27 08:18:05,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:05" (1/1) ... [2018-10-27 08:18:05,458 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:05" (1/1) ... [2018-10-27 08:18:05,458 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:05" (1/1) ... [2018-10-27 08:18:05,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:05" (1/1) ... [2018-10-27 08:18:05,584 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:05" (1/1) ... [2018-10-27 08:18:05,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:05" (1/1) ... [2018-10-27 08:18:05,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 08:18:05,674 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 08:18:05,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 08:18:05,675 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 08:18:05,676 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:18:05,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 08:18:05,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 08:18:05,747 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 08:18:05,747 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 08:18:05,747 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 08:18:05,747 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 08:18:05,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 08:18:05,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 08:18:05,748 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 08:18:05,748 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 08:18:13,301 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 08:18:13,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:18:13 BoogieIcfgContainer [2018-10-27 08:18:13,302 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 08:18:13,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 08:18:13,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 08:18:13,310 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 08:18:13,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:18:03" (1/3) ... [2018-10-27 08:18:13,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72afb927 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:18:13, skipping insertion in model container [2018-10-27 08:18:13,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:18:05" (2/3) ... [2018-10-27 08:18:13,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72afb927 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:18:13, skipping insertion in model container [2018-10-27 08:18:13,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:18:13" (3/3) ... [2018-10-27 08:18:13,315 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label58_true-unreach-call.c [2018-10-27 08:18:13,326 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 08:18:13,336 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 08:18:13,355 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 08:18:13,398 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 08:18:13,398 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 08:18:13,399 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 08:18:13,399 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 08:18:13,399 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 08:18:13,399 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 08:18:13,399 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 08:18:13,400 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 08:18:13,434 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-27 08:18:13,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-27 08:18:13,445 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:18:13,446 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:18:13,449 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:18:13,455 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:18:13,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1265036959, now seen corresponding path program 1 times [2018-10-27 08:18:13,459 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:18:13,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:18:13,520 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:18:13,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:18:13,520 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:18:13,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:18:13,996 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-10-27 08:18:14,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:18:14,020 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:18:14,021 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:18:14,022 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:18:14,028 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:18:14,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:18:14,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:18:14,049 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-10-27 08:18:23,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:18:23,497 INFO L93 Difference]: Finished difference Result 1558 states and 2849 transitions. [2018-10-27 08:18:23,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:18:23,500 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2018-10-27 08:18:23,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:18:23,535 INFO L225 Difference]: With dead ends: 1558 [2018-10-27 08:18:23,535 INFO L226 Difference]: Without dead ends: 1114 [2018-10-27 08:18:23,546 INFO L605 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 [2018-10-27 08:18:23,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2018-10-27 08:18:23,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 1091. [2018-10-27 08:18:23,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2018-10-27 08:18:23,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1853 transitions. [2018-10-27 08:18:23,684 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1853 transitions. Word has length 57 [2018-10-27 08:18:23,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:18:23,685 INFO L481 AbstractCegarLoop]: Abstraction has 1091 states and 1853 transitions. [2018-10-27 08:18:23,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:18:23,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1853 transitions. [2018-10-27 08:18:23,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-27 08:18:23,699 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:18:23,699 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:18:23,700 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:18:23,700 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:18:23,700 INFO L82 PathProgramCache]: Analyzing trace with hash 569089420, now seen corresponding path program 1 times [2018-10-27 08:18:23,700 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:18:23,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:18:23,702 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:18:23,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:18:23,702 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:18:23,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:18:23,983 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:18:23,984 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:18:23,984 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 08:18:23,984 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:18:23,986 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 08:18:23,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 08:18:23,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 08:18:23,987 INFO L87 Difference]: Start difference. First operand 1091 states and 1853 transitions. Second operand 5 states. [2018-10-27 08:18:33,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:18:33,667 INFO L93 Difference]: Finished difference Result 3240 states and 5580 transitions. [2018-10-27 08:18:33,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 08:18:33,668 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2018-10-27 08:18:33,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:18:33,686 INFO L225 Difference]: With dead ends: 3240 [2018-10-27 08:18:33,687 INFO L226 Difference]: Without dead ends: 2155 [2018-10-27 08:18:33,694 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 08:18:33,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2155 states. [2018-10-27 08:18:33,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2155 to 2114. [2018-10-27 08:18:33,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2114 states. [2018-10-27 08:18:33,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2114 states to 2114 states and 3176 transitions. [2018-10-27 08:18:33,786 INFO L78 Accepts]: Start accepts. Automaton has 2114 states and 3176 transitions. Word has length 130 [2018-10-27 08:18:33,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:18:33,787 INFO L481 AbstractCegarLoop]: Abstraction has 2114 states and 3176 transitions. [2018-10-27 08:18:33,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 08:18:33,787 INFO L276 IsEmpty]: Start isEmpty. Operand 2114 states and 3176 transitions. [2018-10-27 08:18:33,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-27 08:18:33,799 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:18:33,800 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, 2, 2, 2, 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] [2018-10-27 08:18:33,800 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:18:33,800 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:18:33,801 INFO L82 PathProgramCache]: Analyzing trace with hash 139406748, now seen corresponding path program 1 times [2018-10-27 08:18:33,801 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:18:33,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:18:33,806 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:18:33,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:18:33,806 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:18:33,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:18:33,966 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:18:33,967 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:18:33,967 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:18:33,967 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:18:33,968 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:18:33,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:18:33,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:18:33,968 INFO L87 Difference]: Start difference. First operand 2114 states and 3176 transitions. Second operand 4 states. [2018-10-27 08:18:39,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:18:39,187 INFO L93 Difference]: Finished difference Result 7943 states and 12452 transitions. [2018-10-27 08:18:39,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:18:39,188 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2018-10-27 08:18:39,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:18:39,232 INFO L225 Difference]: With dead ends: 7943 [2018-10-27 08:18:39,233 INFO L226 Difference]: Without dead ends: 5835 [2018-10-27 08:18:39,260 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:18:39,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5835 states. [2018-10-27 08:18:39,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5835 to 5835. [2018-10-27 08:18:39,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5835 states. [2018-10-27 08:18:39,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5835 states to 5835 states and 8168 transitions. [2018-10-27 08:18:39,431 INFO L78 Accepts]: Start accepts. Automaton has 5835 states and 8168 transitions. Word has length 138 [2018-10-27 08:18:39,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:18:39,432 INFO L481 AbstractCegarLoop]: Abstraction has 5835 states and 8168 transitions. [2018-10-27 08:18:39,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:18:39,432 INFO L276 IsEmpty]: Start isEmpty. Operand 5835 states and 8168 transitions. [2018-10-27 08:18:39,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-10-27 08:18:39,443 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:18:39,443 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:18:39,443 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:18:39,444 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:18:39,444 INFO L82 PathProgramCache]: Analyzing trace with hash -23603164, now seen corresponding path program 1 times [2018-10-27 08:18:39,444 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:18:39,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:18:39,445 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:18:39,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:18:39,445 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:18:39,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:18:39,856 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:18:40,268 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:18:40,269 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:18:40,269 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:18:40,269 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:18:40,270 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:18:40,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:18:40,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:18:40,271 INFO L87 Difference]: Start difference. First operand 5835 states and 8168 transitions. Second operand 6 states. [2018-10-27 08:18:46,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:18:46,792 INFO L93 Difference]: Finished difference Result 15461 states and 22489 transitions. [2018-10-27 08:18:46,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:18:46,795 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 226 [2018-10-27 08:18:46,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:18:46,856 INFO L225 Difference]: With dead ends: 15461 [2018-10-27 08:18:46,856 INFO L226 Difference]: Without dead ends: 9632 [2018-10-27 08:18:46,917 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:18:46,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9632 states. [2018-10-27 08:18:47,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9632 to 9593. [2018-10-27 08:18:47,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9593 states. [2018-10-27 08:18:47,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9593 states to 9593 states and 13018 transitions. [2018-10-27 08:18:47,198 INFO L78 Accepts]: Start accepts. Automaton has 9593 states and 13018 transitions. Word has length 226 [2018-10-27 08:18:47,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:18:47,198 INFO L481 AbstractCegarLoop]: Abstraction has 9593 states and 13018 transitions. [2018-10-27 08:18:47,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:18:47,199 INFO L276 IsEmpty]: Start isEmpty. Operand 9593 states and 13018 transitions. [2018-10-27 08:18:47,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-10-27 08:18:47,218 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:18:47,218 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:18:47,218 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:18:47,218 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:18:47,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1826308229, now seen corresponding path program 1 times [2018-10-27 08:18:47,219 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:18:47,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:18:47,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:18:47,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:18:47,220 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:18:47,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:18:47,541 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:18:47,778 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 100 proven. 78 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 08:18:47,779 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:18:47,779 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:18:47,780 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 228 with the following transitions: [2018-10-27 08:18:47,782 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [429], [431], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [625], [626], [630], [633], [638], [640], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 08:18:47,834 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:18:47,834 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:18:48,334 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:18:48,336 INFO L272 AbstractInterpreter]: Visited 90 different actions 90 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 08:18:48,382 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:18:48,382 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:18:48,873 INFO L227 lantSequenceWeakener]: Weakened 216 states. On average, predicates are now at 78.13% of their original sizes. [2018-10-27 08:18:48,873 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:18:49,066 INFO L415 sIntCurrentIteration]: We unified 226 AI predicates to 226 [2018-10-27 08:18:49,067 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:18:49,068 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:18:49,068 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-27 08:18:49,068 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:18:49,069 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:18:49,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:18:49,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:18:49,069 INFO L87 Difference]: Start difference. First operand 9593 states and 13018 transitions. Second operand 6 states. [2018-10-27 08:20:03,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:20:03,547 INFO L93 Difference]: Finished difference Result 19490 states and 26405 transitions. [2018-10-27 08:20:03,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 08:20:03,548 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 227 [2018-10-27 08:20:03,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:20:03,595 INFO L225 Difference]: With dead ends: 19490 [2018-10-27 08:20:03,595 INFO L226 Difference]: Without dead ends: 9903 [2018-10-27 08:20:03,626 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 227 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 08:20:03,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9903 states. [2018-10-27 08:20:03,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9903 to 9901. [2018-10-27 08:20:03,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9901 states. [2018-10-27 08:20:03,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9901 states to 9901 states and 13335 transitions. [2018-10-27 08:20:03,885 INFO L78 Accepts]: Start accepts. Automaton has 9901 states and 13335 transitions. Word has length 227 [2018-10-27 08:20:03,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:20:03,885 INFO L481 AbstractCegarLoop]: Abstraction has 9901 states and 13335 transitions. [2018-10-27 08:20:03,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:20:03,886 INFO L276 IsEmpty]: Start isEmpty. Operand 9901 states and 13335 transitions. [2018-10-27 08:20:03,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2018-10-27 08:20:03,905 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:20:03,906 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-27 08:20:03,906 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:20:03,906 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:20:03,907 INFO L82 PathProgramCache]: Analyzing trace with hash 2005617649, now seen corresponding path program 1 times [2018-10-27 08:20:03,907 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:20:03,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:20:03,908 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:20:03,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:20:03,908 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:20:03,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:20:04,250 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:20:04,559 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 156 proven. 227 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-27 08:20:04,559 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:20:04,559 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:20:04,560 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 324 with the following transitions: [2018-10-27 08:20:04,560 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [429], [431], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [625], [626], [630], [633], [638], [640], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 08:20:04,567 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:20:04,567 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:20:04,784 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:20:04,784 INFO L272 AbstractInterpreter]: Visited 105 different actions 302 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 08:20:04,811 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:20:04,811 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:20:05,155 INFO L227 lantSequenceWeakener]: Weakened 318 states. On average, predicates are now at 83.98% of their original sizes. [2018-10-27 08:20:05,155 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:20:05,366 INFO L415 sIntCurrentIteration]: We unified 322 AI predicates to 322 [2018-10-27 08:20:05,366 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:20:05,367 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:20:05,367 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2018-10-27 08:20:05,367 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:20:05,368 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 08:20:05,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 08:20:05,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:20:05,368 INFO L87 Difference]: Start difference. First operand 9901 states and 13335 transitions. Second operand 9 states. [2018-10-27 08:20:44,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:20:44,257 INFO L93 Difference]: Finished difference Result 19810 states and 26735 transitions. [2018-10-27 08:20:44,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 08:20:44,257 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 323 [2018-10-27 08:20:44,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:20:44,298 INFO L225 Difference]: With dead ends: 19810 [2018-10-27 08:20:44,299 INFO L226 Difference]: Without dead ends: 10223 [2018-10-27 08:20:44,332 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 328 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2018-10-27 08:20:44,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10223 states. [2018-10-27 08:20:44,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10223 to 10218. [2018-10-27 08:20:44,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10218 states. [2018-10-27 08:20:44,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10218 states to 10218 states and 13675 transitions. [2018-10-27 08:20:44,549 INFO L78 Accepts]: Start accepts. Automaton has 10218 states and 13675 transitions. Word has length 323 [2018-10-27 08:20:44,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:20:44,550 INFO L481 AbstractCegarLoop]: Abstraction has 10218 states and 13675 transitions. [2018-10-27 08:20:44,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 08:20:44,550 INFO L276 IsEmpty]: Start isEmpty. Operand 10218 states and 13675 transitions. [2018-10-27 08:20:44,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2018-10-27 08:20:44,587 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:20:44,588 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-27 08:20:44,588 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:20:44,589 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:20:44,589 INFO L82 PathProgramCache]: Analyzing trace with hash 2100237646, now seen corresponding path program 1 times [2018-10-27 08:20:44,589 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:20:44,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:20:44,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:20:44,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:20:44,590 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:20:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:20:45,357 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 238 proven. 82 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-10-27 08:20:45,358 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:20:45,358 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:20:45,358 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 503 with the following transitions: [2018-10-27 08:20:45,359 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [429], [431], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [625], [626], [630], [633], [638], [640], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 08:20:45,370 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:20:45,370 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:20:47,056 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:20:47,056 INFO L272 AbstractInterpreter]: Visited 287 different actions 1136 times. Merged at 8 different actions 25 times. Never widened. Found 6 fixpoints after 2 different actions. Largest state had 24 variables. [2018-10-27 08:20:47,061 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:20:47,062 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:20:47,062 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:20:47,062 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 08:20:47,073 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:20:47,074 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:20:47,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:20:47,268 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:20:47,855 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 348 proven. 2 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2018-10-27 08:20:47,855 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:20:48,864 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 238 proven. 82 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-10-27 08:20:48,888 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:20:48,888 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-27 08:20:48,888 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:20:48,890 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 08:20:48,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 08:20:48,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-10-27 08:20:48,891 INFO L87 Difference]: Start difference. First operand 10218 states and 13675 transitions. Second operand 9 states. [2018-10-27 08:21:03,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:21:03,973 INFO L93 Difference]: Finished difference Result 25998 states and 39541 transitions. [2018-10-27 08:21:03,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-27 08:21:03,975 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 502 [2018-10-27 08:21:03,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:21:04,142 INFO L225 Difference]: With dead ends: 25998 [2018-10-27 08:21:04,142 INFO L226 Difference]: Without dead ends: 16411 [2018-10-27 08:21:04,382 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1037 GetRequests, 1013 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2018-10-27 08:21:04,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16411 states. [2018-10-27 08:21:05,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16411 to 16329. [2018-10-27 08:21:05,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16329 states. [2018-10-27 08:21:05,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16329 states to 16329 states and 23029 transitions. [2018-10-27 08:21:05,127 INFO L78 Accepts]: Start accepts. Automaton has 16329 states and 23029 transitions. Word has length 502 [2018-10-27 08:21:05,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:21:05,128 INFO L481 AbstractCegarLoop]: Abstraction has 16329 states and 23029 transitions. [2018-10-27 08:21:05,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 08:21:05,129 INFO L276 IsEmpty]: Start isEmpty. Operand 16329 states and 23029 transitions. [2018-10-27 08:21:05,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2018-10-27 08:21:05,415 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:21:05,416 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2018-10-27 08:21:05,416 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:21:05,417 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:21:05,417 INFO L82 PathProgramCache]: Analyzing trace with hash 283486512, now seen corresponding path program 1 times [2018-10-27 08:21:05,417 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:21:05,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:21:05,419 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:21:05,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:21:05,420 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:21:05,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:21:06,080 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 365 proven. 48 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-10-27 08:21:06,080 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:21:06,080 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:21:06,081 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 524 with the following transitions: [2018-10-27 08:21:06,081 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [429], [431], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1060], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 08:21:06,090 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:21:06,090 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:21:07,253 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:21:07,253 INFO L272 AbstractInterpreter]: Visited 211 different actions 835 times. Merged at 8 different actions 27 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-27 08:21:07,289 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:21:07,289 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:21:07,289 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:21:07,290 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 08:21:07,306 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:21:07,306 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:21:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:21:07,469 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:21:07,735 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2018-10-27 08:21:07,735 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:21:08,256 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2018-10-27 08:21:08,290 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:21:08,290 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 4 [2018-10-27 08:21:08,291 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:21:08,291 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 08:21:08,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 08:21:08,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:21:08,294 INFO L87 Difference]: Start difference. First operand 16329 states and 23029 transitions. Second operand 3 states. [2018-10-27 08:21:13,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:21:13,472 INFO L93 Difference]: Finished difference Result 38985 states and 58117 transitions. [2018-10-27 08:21:13,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 08:21:13,473 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 523 [2018-10-27 08:21:13,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:21:13,614 INFO L225 Difference]: With dead ends: 38985 [2018-10-27 08:21:13,614 INFO L226 Difference]: Without dead ends: 22970 [2018-10-27 08:21:13,769 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1052 GetRequests, 1046 SyntacticMatches, 4 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:21:13,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22970 states. [2018-10-27 08:21:14,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22970 to 22340. [2018-10-27 08:21:14,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22340 states. [2018-10-27 08:21:14,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22340 states to 22340 states and 30496 transitions. [2018-10-27 08:21:14,371 INFO L78 Accepts]: Start accepts. Automaton has 22340 states and 30496 transitions. Word has length 523 [2018-10-27 08:21:14,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:21:14,372 INFO L481 AbstractCegarLoop]: Abstraction has 22340 states and 30496 transitions. [2018-10-27 08:21:14,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 08:21:14,372 INFO L276 IsEmpty]: Start isEmpty. Operand 22340 states and 30496 transitions. [2018-10-27 08:21:14,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2018-10-27 08:21:14,416 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:21:14,416 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2018-10-27 08:21:14,417 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:21:14,417 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:21:14,417 INFO L82 PathProgramCache]: Analyzing trace with hash -896462865, now seen corresponding path program 1 times [2018-10-27 08:21:14,417 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:21:14,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:21:14,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:21:14,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:21:14,418 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:21:14,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:21:15,552 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 381 proven. 82 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2018-10-27 08:21:15,553 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:21:15,553 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:21:15,553 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 525 with the following transitions: [2018-10-27 08:21:15,554 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [429], [431], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [625], [626], [630], [633], [638], [640], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 08:21:15,559 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:21:15,560 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:21:16,823 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:21:16,823 INFO L272 AbstractInterpreter]: Visited 214 different actions 1051 times. Merged at 9 different actions 34 times. Never widened. Found 8 fixpoints after 2 different actions. Largest state had 24 variables. [2018-10-27 08:21:16,833 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:21:16,833 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:21:16,833 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:21:16,833 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 08:21:16,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:21:16,842 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:21:16,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:21:16,994 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:21:17,256 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 569 proven. 2 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2018-10-27 08:21:17,257 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:21:17,526 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 381 proven. 82 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2018-10-27 08:21:17,547 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:21:17,548 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-27 08:21:17,548 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:21:17,549 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 08:21:17,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 08:21:17,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-27 08:21:17,549 INFO L87 Difference]: Start difference. First operand 22340 states and 30496 transitions. Second operand 9 states. [2018-10-27 08:21:28,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:21:28,814 INFO L93 Difference]: Finished difference Result 46381 states and 66519 transitions. [2018-10-27 08:21:28,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-27 08:21:28,814 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 524 [2018-10-27 08:21:28,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:21:29,006 INFO L225 Difference]: With dead ends: 46381 [2018-10-27 08:21:29,007 INFO L226 Difference]: Without dead ends: 24980 [2018-10-27 08:21:29,181 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1075 GetRequests, 1054 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2018-10-27 08:21:29,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24980 states. [2018-10-27 08:21:29,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24980 to 24920. [2018-10-27 08:21:29,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24920 states. [2018-10-27 08:21:29,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24920 states to 24920 states and 34186 transitions. [2018-10-27 08:21:29,875 INFO L78 Accepts]: Start accepts. Automaton has 24920 states and 34186 transitions. Word has length 524 [2018-10-27 08:21:29,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:21:29,876 INFO L481 AbstractCegarLoop]: Abstraction has 24920 states and 34186 transitions. [2018-10-27 08:21:29,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 08:21:29,876 INFO L276 IsEmpty]: Start isEmpty. Operand 24920 states and 34186 transitions. [2018-10-27 08:21:29,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2018-10-27 08:21:29,902 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:21:29,903 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:21:29,903 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:21:29,903 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:21:29,903 INFO L82 PathProgramCache]: Analyzing trace with hash -946803044, now seen corresponding path program 1 times [2018-10-27 08:21:29,904 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:21:29,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:21:29,905 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:21:29,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:21:29,905 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:21:29,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:21:30,409 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 440 proven. 2 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2018-10-27 08:21:30,409 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:21:30,409 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:21:30,409 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 598 with the following transitions: [2018-10-27 08:21:30,410 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [429], [431], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [625], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 08:21:30,416 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:21:30,417 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:21:36,469 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:21:36,469 INFO L272 AbstractInterpreter]: Visited 286 different actions 1138 times. Merged at 9 different actions 29 times. Never widened. Found 8 fixpoints after 2 different actions. Largest state had 24 variables. [2018-10-27 08:21:36,498 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:21:36,498 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:21:36,498 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:21:36,498 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 08:21:36,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:21:36,506 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:21:36,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:21:36,684 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:21:37,346 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 440 proven. 2 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2018-10-27 08:21:37,347 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:21:37,989 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 440 proven. 2 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2018-10-27 08:21:38,011 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:21:38,011 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2018-10-27 08:21:38,011 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:21:38,012 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-27 08:21:38,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-27 08:21:38,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:21:38,013 INFO L87 Difference]: Start difference. First operand 24920 states and 34186 transitions. Second operand 8 states. [2018-10-27 08:21:50,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:21:50,098 INFO L93 Difference]: Finished difference Result 59342 states and 88104 transitions. [2018-10-27 08:21:50,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-27 08:21:50,098 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 597 [2018-10-27 08:21:50,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:21:50,397 INFO L225 Difference]: With dead ends: 59342 [2018-10-27 08:21:50,397 INFO L226 Difference]: Without dead ends: 35363 [2018-10-27 08:21:50,650 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1249 GetRequests, 1213 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=267, Invalid=993, Unknown=0, NotChecked=0, Total=1260 [2018-10-27 08:21:50,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35363 states. [2018-10-27 08:21:51,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35363 to 34873. [2018-10-27 08:21:51,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34873 states. [2018-10-27 08:21:51,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34873 states to 34873 states and 45931 transitions. [2018-10-27 08:21:51,872 INFO L78 Accepts]: Start accepts. Automaton has 34873 states and 45931 transitions. Word has length 597 [2018-10-27 08:21:51,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:21:51,873 INFO L481 AbstractCegarLoop]: Abstraction has 34873 states and 45931 transitions. [2018-10-27 08:21:51,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-27 08:21:51,874 INFO L276 IsEmpty]: Start isEmpty. Operand 34873 states and 45931 transitions. [2018-10-27 08:21:51,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 617 [2018-10-27 08:21:51,896 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:21:51,897 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:21:51,897 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:21:51,897 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:21:51,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1308401919, now seen corresponding path program 1 times [2018-10-27 08:21:51,899 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:21:51,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:21:51,900 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:21:51,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:21:51,900 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) Received shutdown request... [2018-10-27 08:21:52,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2018-10-27 08:21:52,248 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-27 08:21:52,248 INFO L171 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-27 08:21:52,266 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:21:52,267 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-10-27 08:21:52,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:21:52,445 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 617 with the following transitions: [2018-10-27 08:21:52,446 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [429], [431], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [842], [847], [849], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1455], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 08:21:52,451 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:21:52,451 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:21:52,452 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-27 08:21:52,453 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-27 08:21:52,453 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-27 08:21:52,453 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:21:52,453 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:21:52,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:21:52,469 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:21:52,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:21:52,642 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:21:52,662 WARN L187 SmtUtils]: Removed 1 from assertion stack [2018-10-27 08:21:52,663 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-27 08:21:52,864 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:21:52,864 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 08:21:52,868 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 08:21:52,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 08:21:52 BoogieIcfgContainer [2018-10-27 08:21:52,869 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 08:21:52,870 INFO L168 Benchmark]: Toolchain (without parser) took 229217.96 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.7 GB). Peak memory consumption was 815.5 MB. Max. memory is 7.1 GB. [2018-10-27 08:21:52,871 INFO L168 Benchmark]: CDTParser took 0.19 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. [2018-10-27 08:21:52,872 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1365.13 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2018-10-27 08:21:52,873 INFO L168 Benchmark]: Boogie Procedure Inliner took 406.42 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 764.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -883.2 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2018-10-27 08:21:52,874 INFO L168 Benchmark]: Boogie Preprocessor took 247.30 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: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. [2018-10-27 08:21:52,875 INFO L168 Benchmark]: RCFGBuilder took 7630.56 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 299.0 MB). Peak memory consumption was 299.0 MB. Max. memory is 7.1 GB. [2018-10-27 08:21:52,875 INFO L168 Benchmark]: TraceAbstraction took 219562.60 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 3.2 GB in the end (delta: -1.3 GB). Peak memory consumption was 501.6 MB. Max. memory is 7.1 GB. [2018-10-27 08:21:52,880 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 1365.13 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 406.42 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 764.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -883.2 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 247.30 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: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7630.56 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 299.0 MB). Peak memory consumption was 299.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 219562.60 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 3.2 GB in the end (delta: -1.3 GB). Peak memory consumption was 501.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 157]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 157). Cancelled while BasicCegarLoop was analyzing trace of length 617 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 219.4s OverallTime, 11 OverallIterations, 5 TraceHistogramMax, 189.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2783 SDtfs, 16884 SDslu, 3186 SDs, 0 SdLazy, 27035 SolverSat, 6836 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 145.4s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 4998 GetRequests, 4875 SyntacticMatches, 10 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34873occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 11.1s AbstIntTime, 7 AbstIntIterations, 2 AbstIntStrong, 0.9970866646755332 AbsIntWeakeningRatio, 0.10948905109489052 AbsIntAvgWeakeningVarsNumRemoved, 15.284671532846716 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 4.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 1372 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 8.7s InterpolantComputationTime, 5393 NumberOfCodeBlocks, 5393 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 7521 ConstructedInterpolants, 0 QuantifiedInterpolants, 6593062 SizeOfPredicates, 5 NumberOfNonLiveVariables, 3105 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 18 InterpolantComputations, 6 PerfectInterpolantSequences, 6988/7679 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown