java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label01_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 20:40:12,455 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 20:40:12,459 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 20:40:12,481 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 20:40:12,482 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 20:40:12,483 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 20:40:12,484 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 20:40:12,489 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 20:40:12,491 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 20:40:12,492 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 20:40:12,494 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 20:40:12,497 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 20:40:12,500 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 20:40:12,501 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 20:40:12,502 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 20:40:12,506 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 20:40:12,507 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 20:40:12,511 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 20:40:12,513 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 20:40:12,523 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 20:40:12,524 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 20:40:12,525 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 20:40:12,528 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 20:40:12,528 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 20:40:12,528 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 20:40:12,529 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 20:40:12,530 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 20:40:12,531 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 20:40:12,531 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 20:40:12,533 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 20:40:12,533 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 20:40:12,533 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 20:40:12,534 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 20:40:12,534 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 20:40:12,535 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 20:40:12,536 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 20:40:12,536 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 20:40:12,552 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 20:40:12,553 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 20:40:12,553 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 20:40:12,554 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 20:40:12,554 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 20:40:12,554 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 20:40:12,555 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 20:40:12,555 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 20:40:12,555 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 20:40:12,555 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 20:40:12,556 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 20:40:12,556 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 20:40:12,556 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 20:40:12,557 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 20:40:12,557 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 20:40:12,558 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 20:40:12,558 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 20:40:12,558 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 20:40:12,558 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 20:40:12,559 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 20:40:12,559 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 20:40:12,559 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 20:40:12,559 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 20:40:12,559 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 20:40:12,559 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 20:40:12,561 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:40:12,561 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 20:40:12,562 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 20:40:12,562 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 20:40:12,562 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 20:40:12,562 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 20:40:12,562 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 20:40:12,563 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 20:40:12,563 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 20:40:12,563 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 20:40:12,636 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 20:40:12,652 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 20:40:12,656 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 20:40:12,657 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 20:40:12,658 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 20:40:12,659 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label01_true-unreach-call.c [2018-11-07 20:40:12,723 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae0f86a57/5553749c16214bc0b8bd4894b85ffdda/FLAG918c1a2db [2018-11-07 20:40:13,459 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 20:40:13,460 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label01_true-unreach-call.c [2018-11-07 20:40:13,481 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae0f86a57/5553749c16214bc0b8bd4894b85ffdda/FLAG918c1a2db [2018-11-07 20:40:13,497 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae0f86a57/5553749c16214bc0b8bd4894b85ffdda [2018-11-07 20:40:13,507 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 20:40:13,509 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 20:40:13,510 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 20:40:13,510 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 20:40:13,514 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 20:40:13,515 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:40:13" (1/1) ... [2018-11-07 20:40:13,518 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d100604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:40:13, skipping insertion in model container [2018-11-07 20:40:13,519 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:40:13" (1/1) ... [2018-11-07 20:40:13,529 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 20:40:13,635 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 20:40:14,539 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:40:14,544 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 20:40:14,854 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:40:14,885 INFO L193 MainTranslator]: Completed translation [2018-11-07 20:40:14,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:40:14 WrapperNode [2018-11-07 20:40:14,889 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 20:40:14,891 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 20:40:14,891 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 20:40:14,891 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 20:40:14,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:40:14" (1/1) ... [2018-11-07 20:40:15,136 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:40:14" (1/1) ... [2018-11-07 20:40:15,145 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 20:40:15,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 20:40:15,145 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 20:40:15,146 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 20:40:15,158 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:40:14" (1/1) ... [2018-11-07 20:40:15,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:40:14" (1/1) ... [2018-11-07 20:40:15,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:40:14" (1/1) ... [2018-11-07 20:40:15,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:40:14" (1/1) ... [2018-11-07 20:40:15,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:40:14" (1/1) ... [2018-11-07 20:40:15,296 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:40:14" (1/1) ... [2018-11-07 20:40:15,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:40:14" (1/1) ... [2018-11-07 20:40:15,323 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 20:40:15,323 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 20:40:15,323 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 20:40:15,324 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 20:40:15,325 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:40:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:40:15,394 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 20:40:15,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 20:40:15,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 20:40:15,394 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 20:40:15,395 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 20:40:15,395 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 20:40:15,395 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 20:40:15,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 20:40:15,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 20:40:15,396 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 20:40:15,396 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 20:40:21,442 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 20:40:21,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:40:21 BoogieIcfgContainer [2018-11-07 20:40:21,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 20:40:21,444 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 20:40:21,444 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 20:40:21,448 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 20:40:21,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:40:13" (1/3) ... [2018-11-07 20:40:21,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a4ad88b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:40:21, skipping insertion in model container [2018-11-07 20:40:21,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:40:14" (2/3) ... [2018-11-07 20:40:21,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a4ad88b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:40:21, skipping insertion in model container [2018-11-07 20:40:21,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:40:21" (3/3) ... [2018-11-07 20:40:21,452 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label01_true-unreach-call.c [2018-11-07 20:40:21,462 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 20:40:21,474 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 20:40:21,489 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 20:40:21,531 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 20:40:21,532 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 20:40:21,532 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 20:40:21,532 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 20:40:21,532 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 20:40:21,532 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 20:40:21,533 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 20:40:21,533 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 20:40:21,567 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-07 20:40:21,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-11-07 20:40:21,577 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:40:21,578 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] [2018-11-07 20:40:21,581 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:40:21,587 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:40:21,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1009438167, now seen corresponding path program 1 times [2018-11-07 20:40:21,590 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:40:21,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:40:21,640 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:40:21,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:40:21,640 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:40:21,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:40:22,063 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-11-07 20:40:22,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:40:22,083 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:40:22,084 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 20:40:22,084 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:40:22,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 20:40:22,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 20:40:22,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:40:22,111 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-11-07 20:40:28,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:40:28,776 INFO L93 Difference]: Finished difference Result 1550 states and 2835 transitions. [2018-11-07 20:40:28,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 20:40:28,779 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2018-11-07 20:40:28,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:40:28,805 INFO L225 Difference]: With dead ends: 1550 [2018-11-07 20:40:28,806 INFO L226 Difference]: Without dead ends: 1106 [2018-11-07 20:40:28,816 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:40:28,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2018-11-07 20:40:28,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 762. [2018-11-07 20:40:28,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2018-11-07 20:40:28,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1263 transitions. [2018-11-07 20:40:28,954 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1263 transitions. Word has length 51 [2018-11-07 20:40:28,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:40:28,955 INFO L480 AbstractCegarLoop]: Abstraction has 762 states and 1263 transitions. [2018-11-07 20:40:28,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 20:40:28,956 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1263 transitions. [2018-11-07 20:40:28,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-11-07 20:40:28,968 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:40:28,968 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:40:28,970 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:40:28,971 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:40:28,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1206177332, now seen corresponding path program 1 times [2018-11-07 20:40:28,971 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:40:28,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:40:28,975 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:40:28,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:40:28,975 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:40:29,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:40:29,234 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:40:29,234 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:40:29,235 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 20:40:29,235 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:40:29,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 20:40:29,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 20:40:29,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 20:40:29,241 INFO L87 Difference]: Start difference. First operand 762 states and 1263 transitions. Second operand 5 states. [2018-11-07 20:40:34,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:40:34,219 INFO L93 Difference]: Finished difference Result 2248 states and 3762 transitions. [2018-11-07 20:40:34,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 20:40:34,221 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2018-11-07 20:40:34,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:40:34,241 INFO L225 Difference]: With dead ends: 2248 [2018-11-07 20:40:34,241 INFO L226 Difference]: Without dead ends: 1492 [2018-11-07 20:40:34,245 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 20:40:34,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2018-11-07 20:40:34,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1457. [2018-11-07 20:40:34,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1457 states. [2018-11-07 20:40:34,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 2152 transitions. [2018-11-07 20:40:34,327 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 2152 transitions. Word has length 124 [2018-11-07 20:40:34,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:40:34,328 INFO L480 AbstractCegarLoop]: Abstraction has 1457 states and 2152 transitions. [2018-11-07 20:40:34,328 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 20:40:34,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 2152 transitions. [2018-11-07 20:40:34,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-11-07 20:40:34,332 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:40:34,338 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:40:34,338 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:40:34,338 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:40:34,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1698433604, now seen corresponding path program 1 times [2018-11-07 20:40:34,339 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:40:34,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:40:34,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:40:34,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:40:34,342 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:40:34,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:40:34,553 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:40:34,554 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:40:34,554 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 20:40:34,554 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:40:34,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 20:40:34,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 20:40:34,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:40:34,555 INFO L87 Difference]: Start difference. First operand 1457 states and 2152 transitions. Second operand 4 states. [2018-11-07 20:40:40,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:40:40,160 INFO L93 Difference]: Finished difference Result 5392 states and 8275 transitions. [2018-11-07 20:40:40,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 20:40:40,161 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2018-11-07 20:40:40,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:40:40,192 INFO L225 Difference]: With dead ends: 5392 [2018-11-07 20:40:40,192 INFO L226 Difference]: Without dead ends: 3941 [2018-11-07 20:40:40,206 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:40:40,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3941 states. [2018-11-07 20:40:40,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3941 to 3939. [2018-11-07 20:40:40,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3939 states. [2018-11-07 20:40:40,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3939 states to 3939 states and 5428 transitions. [2018-11-07 20:40:40,320 INFO L78 Accepts]: Start accepts. Automaton has 3939 states and 5428 transitions. Word has length 132 [2018-11-07 20:40:40,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:40:40,321 INFO L480 AbstractCegarLoop]: Abstraction has 3939 states and 5428 transitions. [2018-11-07 20:40:40,321 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 20:40:40,322 INFO L276 IsEmpty]: Start isEmpty. Operand 3939 states and 5428 transitions. [2018-11-07 20:40:40,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-11-07 20:40:40,329 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:40:40,329 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, 2, 2, 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] [2018-11-07 20:40:40,330 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:40:40,330 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:40:40,330 INFO L82 PathProgramCache]: Analyzing trace with hash 782695778, now seen corresponding path program 1 times [2018-11-07 20:40:40,330 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:40:40,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:40:40,331 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:40:40,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:40:40,332 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:40:40,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:40:40,614 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 88 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 20:40:40,615 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:40:40,615 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:40:40,616 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 209 with the following transitions: [2018-11-07 20:40:40,618 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], [381], [383], [386], [394], [402], [410], [418], [426], [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], [626], [630], [633], [638], [640], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 20:40:40,674 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:40:40,675 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:40:41,233 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:40:41,237 INFO L272 AbstractInterpreter]: Visited 90 different actions 90 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 20:40:41,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:40:41,300 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:40:41,758 INFO L227 lantSequenceWeakener]: Weakened 197 states. On average, predicates are now at 78.02% of their original sizes. [2018-11-07 20:40:41,758 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:40:41,914 INFO L415 sIntCurrentIteration]: We unified 207 AI predicates to 207 [2018-11-07 20:40:41,914 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:40:41,915 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:40:41,915 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 20:40:41,915 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:40:41,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 20:40:41,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 20:40:41,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 20:40:41,917 INFO L87 Difference]: Start difference. First operand 3939 states and 5428 transitions. Second operand 7 states. [2018-11-07 20:40:43,957 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:41:06,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:41:06,332 INFO L93 Difference]: Finished difference Result 8182 states and 11238 transitions. [2018-11-07 20:41:06,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:41:06,332 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 208 [2018-11-07 20:41:06,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:41:06,353 INFO L225 Difference]: With dead ends: 8182 [2018-11-07 20:41:06,353 INFO L226 Difference]: Without dead ends: 4249 [2018-11-07 20:41:06,372 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 208 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 20:41:06,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4249 states. [2018-11-07 20:41:06,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4249 to 4247. [2018-11-07 20:41:06,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4247 states. [2018-11-07 20:41:06,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4247 states to 4247 states and 5745 transitions. [2018-11-07 20:41:06,481 INFO L78 Accepts]: Start accepts. Automaton has 4247 states and 5745 transitions. Word has length 208 [2018-11-07 20:41:06,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:41:06,482 INFO L480 AbstractCegarLoop]: Abstraction has 4247 states and 5745 transitions. [2018-11-07 20:41:06,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 20:41:06,482 INFO L276 IsEmpty]: Start isEmpty. Operand 4247 states and 5745 transitions. [2018-11-07 20:41:06,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-11-07 20:41:06,491 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:41:06,491 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, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:41:06,492 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:41:06,492 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:41:06,492 INFO L82 PathProgramCache]: Analyzing trace with hash 691129420, now seen corresponding path program 1 times [2018-11-07 20:41:06,492 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:41:06,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:41:06,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:41:06,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:41:06,494 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:41:06,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:41:07,382 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 138 proven. 201 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-07 20:41:07,383 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:41:07,383 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:41:07,383 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 305 with the following transitions: [2018-11-07 20:41:07,384 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], [381], [383], [386], [394], [402], [410], [418], [426], [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], [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] [2018-11-07 20:41:07,395 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:41:07,395 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:41:07,491 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:41:07,753 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:41:07,753 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. [2018-11-07 20:41:07,793 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:41:07,793 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:41:08,410 INFO L227 lantSequenceWeakener]: Weakened 68 states. On average, predicates are now at 77.87% of their original sizes. [2018-11-07 20:41:08,411 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:41:09,654 INFO L415 sIntCurrentIteration]: We unified 303 AI predicates to 303 [2018-11-07 20:41:09,655 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:41:09,655 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:41:09,656 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [6] total 26 [2018-11-07 20:41:09,656 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:41:09,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-07 20:41:09,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-07 20:41:09,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2018-11-07 20:41:09,658 INFO L87 Difference]: Start difference. First operand 4247 states and 5745 transitions. Second operand 22 states. [2018-11-07 20:42:28,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:42:28,355 INFO L93 Difference]: Finished difference Result 10996 states and 14595 transitions. [2018-11-07 20:42:28,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-11-07 20:42:28,356 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 304 [2018-11-07 20:42:28,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:42:28,382 INFO L225 Difference]: With dead ends: 10996 [2018-11-07 20:42:28,382 INFO L226 Difference]: Without dead ends: 7063 [2018-11-07 20:42:28,402 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 328 GetRequests, 280 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=389, Invalid=1681, Unknown=0, NotChecked=0, Total=2070 [2018-11-07 20:42:28,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7063 states. [2018-11-07 20:42:29,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7063 to 6098. [2018-11-07 20:42:29,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6098 states. [2018-11-07 20:42:29,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6098 states to 6098 states and 7689 transitions. [2018-11-07 20:42:29,335 INFO L78 Accepts]: Start accepts. Automaton has 6098 states and 7689 transitions. Word has length 304 [2018-11-07 20:42:29,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:42:29,335 INFO L480 AbstractCegarLoop]: Abstraction has 6098 states and 7689 transitions. [2018-11-07 20:42:29,336 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-07 20:42:29,336 INFO L276 IsEmpty]: Start isEmpty. Operand 6098 states and 7689 transitions. [2018-11-07 20:42:29,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2018-11-07 20:42:29,353 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:42:29,354 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, 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, 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] [2018-11-07 20:42:29,354 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:42:29,354 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:42:29,354 INFO L82 PathProgramCache]: Analyzing trace with hash -461358128, now seen corresponding path program 1 times [2018-11-07 20:42:29,355 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:42:29,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:42:29,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:42:29,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:42:29,356 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:42:29,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:42:29,681 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 228 proven. 45 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2018-11-07 20:42:29,681 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:42:29,682 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:42:29,682 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 402 with the following transitions: [2018-11-07 20:42:29,683 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], [381], [383], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [462], [464], [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], [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] [2018-11-07 20:42:29,696 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:42:29,696 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:42:29,808 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:42:30,352 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:42:30,353 INFO L272 AbstractInterpreter]: Visited 107 different actions 891 times. Merged at 46 different actions 201 times. Widened at 1 different actions 2 times. Found 7 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 20:42:30,363 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:42:30,363 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:42:30,839 INFO L227 lantSequenceWeakener]: Weakened 61 states. On average, predicates are now at 77.42% of their original sizes. [2018-11-07 20:42:30,839 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:42:31,478 INFO L415 sIntCurrentIteration]: We unified 400 AI predicates to 400 [2018-11-07 20:42:31,478 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:42:31,479 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:42:31,479 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [3] total 20 [2018-11-07 20:42:31,479 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:42:31,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-07 20:42:31,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-07 20:42:31,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2018-11-07 20:42:31,480 INFO L87 Difference]: Start difference. First operand 6098 states and 7689 transitions. Second operand 19 states. [2018-11-07 20:43:23,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:43:23,557 INFO L93 Difference]: Finished difference Result 11629 states and 14779 transitions. [2018-11-07 20:43:23,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-11-07 20:43:23,557 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 401 [2018-11-07 20:43:23,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:43:23,580 INFO L225 Difference]: With dead ends: 11629 [2018-11-07 20:43:23,580 INFO L226 Difference]: Without dead ends: 7067 [2018-11-07 20:43:23,595 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 422 GetRequests, 379 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=337, Invalid=1303, Unknown=0, NotChecked=0, Total=1640 [2018-11-07 20:43:23,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7067 states. [2018-11-07 20:43:23,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7067 to 6293. [2018-11-07 20:43:23,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6293 states. [2018-11-07 20:43:23,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6293 states to 6293 states and 7880 transitions. [2018-11-07 20:43:23,733 INFO L78 Accepts]: Start accepts. Automaton has 6293 states and 7880 transitions. Word has length 401 [2018-11-07 20:43:23,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:43:23,734 INFO L480 AbstractCegarLoop]: Abstraction has 6293 states and 7880 transitions. [2018-11-07 20:43:23,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-07 20:43:23,734 INFO L276 IsEmpty]: Start isEmpty. Operand 6293 states and 7880 transitions. [2018-11-07 20:43:23,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-11-07 20:43:23,751 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:43:23,751 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:43:23,752 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:43:23,752 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:43:23,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1359324968, now seen corresponding path program 1 times [2018-11-07 20:43:23,752 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:43:23,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:43:23,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:43:23,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:43:23,754 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:43:23,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:43:24,628 WARN L179 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 19 [2018-11-07 20:43:24,813 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-11-07 20:43:24,813 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:43:24,813 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:43:24,813 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 409 with the following transitions: [2018-11-07 20:43:24,815 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], [381], [383], [386], [394], [402], [410], [418], [426], [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], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1562], [1566], [1570], [1581], [1585], [1589], [1593], [1597], [1601], [1612], [1616], [1620], [1623], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 20:43:24,824 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:43:24,824 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:43:25,027 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:43:25,458 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 20:43:25,458 INFO L272 AbstractInterpreter]: Visited 296 different actions 885 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 20:43:25,461 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:43:25,462 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 20:43:25,462 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:43:25,462 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 20:43:25,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:43:25,472 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 20:43:25,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:43:25,621 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 20:43:25,957 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2018-11-07 20:43:26,965 WARN L179 SmtUtils]: Spent 608.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2018-11-07 20:43:27,334 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-11-07 20:43:27,334 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 20:43:28,407 WARN L179 SmtUtils]: Spent 744.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 33 [2018-11-07 20:43:28,590 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-11-07 20:43:28,946 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 23 [2018-11-07 20:43:29,655 WARN L179 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 40 [2018-11-07 20:43:31,462 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 93 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:43:31,484 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 20:43:31,485 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 17 [2018-11-07 20:43:31,485 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 20:43:31,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 20:43:31,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 20:43:31,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2018-11-07 20:43:31,487 INFO L87 Difference]: Start difference. First operand 6293 states and 7880 transitions. Second operand 11 states. [2018-11-07 20:43:35,083 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41 Received shutdown request... [2018-11-07 20:43:52,829 WARN L187 SmtUtils]: Removed 5 from assertion stack [2018-11-07 20:43:52,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-11-07 20:43:52,830 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 20:43:52,836 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 20:43:52,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:43:52 BoogieIcfgContainer [2018-11-07 20:43:52,837 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 20:43:52,839 INFO L168 Benchmark]: Toolchain (without parser) took 219330.35 ms. Allocated memory was 1.5 GB in the beginning and 5.5 GB in the end (delta: 4.0 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -516.6 MB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. [2018-11-07 20:43:52,840 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 20:43:52,840 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1379.88 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: 95.3 MB). Peak memory consumption was 95.3 MB. Max. memory is 7.1 GB. [2018-11-07 20:43:52,841 INFO L168 Benchmark]: Boogie Procedure Inliner took 254.40 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 723.5 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -841.0 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. [2018-11-07 20:43:52,843 INFO L168 Benchmark]: Boogie Preprocessor took 177.56 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2018-11-07 20:43:52,843 INFO L168 Benchmark]: RCFGBuilder took 6119.53 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 281.0 MB). Peak memory consumption was 281.0 MB. Max. memory is 7.1 GB. [2018-11-07 20:43:52,844 INFO L168 Benchmark]: TraceAbstraction took 211393.90 ms. Allocated memory was 2.2 GB in the beginning and 5.5 GB in the end (delta: 3.3 GB). Free memory was 1.8 GB in the beginning and 1.9 GB in the end (delta: -66.1 MB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. [2018-11-07 20:43:52,850 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1379.88 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: 95.3 MB). Peak memory consumption was 95.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 254.40 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 723.5 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -841.0 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 177.56 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6119.53 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 281.0 MB). Peak memory consumption was 281.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211393.90 ms. Allocated memory was 2.2 GB in the beginning and 5.5 GB in the end (delta: 3.3 GB). Free memory was 1.8 GB in the beginning and 1.9 GB in the end (delta: -66.1 MB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 139]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 139). Cancelled while BasicCegarLoop was constructing difference of abstraction (6293states) and FLOYD_HOARE automaton (currently 27 states, 11 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 54. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 211.3s OverallTime, 7 OverallIterations, 5 TraceHistogramMax, 194.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2610 SDtfs, 23387 SDslu, 2582 SDs, 0 SdLazy, 34493 SolverSat, 3359 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 84.5s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 1824 GetRequests, 1679 SyntacticMatches, 12 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1230 ImplicationChecksByTransitivity, 8.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6293occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.4s AbstIntTime, 4 AbstIntIterations, 3 AbstIntStrong, 0.9970207949400497 AbsIntWeakeningRatio, 0.1087912087912088 AbsIntAvgWeakeningVarsNumRemoved, 13.195604395604395 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 6 MinimizatonAttempts, 2122 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 7.9s InterpolantComputationTime, 2036 NumberOfCodeBlocks, 2036 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 2435 ConstructedInterpolants, 0 QuantifiedInterpolants, 15956966 SizeOfPredicates, 3 NumberOfNonLiveVariables, 586 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 1163/1729 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown