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/Problem18_label36_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 18:28:03,398 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 18:28:03,401 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 18:28:03,418 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 18:28:03,418 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 18:28:03,420 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 18:28:03,422 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 18:28:03,424 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 18:28:03,428 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 18:28:03,429 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 18:28:03,432 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 18:28:03,432 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 18:28:03,433 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 18:28:03,435 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 18:28:03,438 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 18:28:03,446 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 18:28:03,447 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 18:28:03,450 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 18:28:03,452 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 18:28:03,454 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 18:28:03,457 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 18:28:03,458 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 18:28:03,462 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 18:28:03,463 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 18:28:03,463 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 18:28:03,464 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 18:28:03,465 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 18:28:03,467 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 18:28:03,468 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 18:28:03,471 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 18:28:03,471 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 18:28:03,472 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 18:28:03,472 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 18:28:03,472 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 18:28:03,473 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 18:28:03,474 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 18:28:03,475 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 18:28:03,506 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 18:28:03,506 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 18:28:03,509 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 18:28:03,509 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 18:28:03,510 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 18:28:03,510 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 18:28:03,510 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 18:28:03,510 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 18:28:03,510 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 18:28:03,511 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 18:28:03,511 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 18:28:03,511 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 18:28:03,511 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 18:28:03,512 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 18:28:03,512 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 18:28:03,512 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 18:28:03,513 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 18:28:03,514 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 18:28:03,514 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 18:28:03,514 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 18:28:03,514 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 18:28:03,515 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 18:28:03,515 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 18:28:03,515 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 18:28:03,515 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 18:28:03,515 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 18:28:03,515 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 18:28:03,516 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 18:28:03,516 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 18:28:03,516 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 18:28:03,517 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 18:28:03,517 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 18:28:03,517 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 18:28:03,517 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 18:28:03,517 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 18:28:03,582 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 18:28:03,600 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 18:28:03,604 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 18:28:03,606 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 18:28:03,606 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 18:28:03,607 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label36_false-unreach-call.c [2018-11-07 18:28:03,683 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b339cfbb3/25552975b7c048cb9ae628f1c926bae0/FLAG2ac305579 [2018-11-07 18:28:04,420 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 18:28:04,421 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label36_false-unreach-call.c [2018-11-07 18:28:04,445 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b339cfbb3/25552975b7c048cb9ae628f1c926bae0/FLAG2ac305579 [2018-11-07 18:28:04,462 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b339cfbb3/25552975b7c048cb9ae628f1c926bae0 [2018-11-07 18:28:04,473 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 18:28:04,475 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 18:28:04,476 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 18:28:04,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 18:28:04,482 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 18:28:04,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:28:04" (1/1) ... [2018-11-07 18:28:04,486 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1342862e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:28:04, skipping insertion in model container [2018-11-07 18:28:04,486 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:28:04" (1/1) ... [2018-11-07 18:28:04,497 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 18:28:04,619 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 18:28:05,851 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:28:05,856 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 18:28:06,311 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:28:06,339 INFO L193 MainTranslator]: Completed translation [2018-11-07 18:28:06,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:28:06 WrapperNode [2018-11-07 18:28:06,340 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 18:28:06,341 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 18:28:06,341 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 18:28:06,341 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 18:28:06,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:28:06" (1/1) ... [2018-11-07 18:28:06,628 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:28:06" (1/1) ... [2018-11-07 18:28:06,639 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 18:28:06,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 18:28:06,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 18:28:06,640 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 18:28:06,649 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:28:06" (1/1) ... [2018-11-07 18:28:06,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:28:06" (1/1) ... [2018-11-07 18:28:06,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:28:06" (1/1) ... [2018-11-07 18:28:06,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:28:06" (1/1) ... [2018-11-07 18:28:06,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:28:06" (1/1) ... [2018-11-07 18:28:06,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:28:06" (1/1) ... [2018-11-07 18:28:06,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:28:06" (1/1) ... [2018-11-07 18:28:06,857 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 18:28:06,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 18:28:06,857 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 18:28:06,858 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 18:28:06,859 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:28:06" (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 18:28:06,930 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 18:28:06,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 18:28:06,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 18:28:06,931 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 18:28:06,931 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 18:28:06,932 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 18:28:06,932 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 18:28:06,932 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 18:28:06,932 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 18:28:06,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 18:28:06,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 18:28:06,933 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 18:28:06,934 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 18:28:15,538 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 18:28:15,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:28:15 BoogieIcfgContainer [2018-11-07 18:28:15,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 18:28:15,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 18:28:15,540 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 18:28:15,543 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 18:28:15,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:28:04" (1/3) ... [2018-11-07 18:28:15,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38a4750a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:28:15, skipping insertion in model container [2018-11-07 18:28:15,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:28:06" (2/3) ... [2018-11-07 18:28:15,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38a4750a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:28:15, skipping insertion in model container [2018-11-07 18:28:15,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:28:15" (3/3) ... [2018-11-07 18:28:15,547 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label36_false-unreach-call.c [2018-11-07 18:28:15,557 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 18:28:15,567 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 18:28:15,586 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 18:28:15,633 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 18:28:15,633 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 18:28:15,633 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 18:28:15,633 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 18:28:15,634 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 18:28:15,634 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 18:28:15,634 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 18:28:15,634 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 18:28:15,673 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 18:28:15,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-07 18:28:15,681 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:28:15,683 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] [2018-11-07 18:28:15,685 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:28:15,691 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:28:15,692 INFO L82 PathProgramCache]: Analyzing trace with hash -966546412, now seen corresponding path program 1 times [2018-11-07 18:28:15,695 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:28:15,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:28:15,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:28:15,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:28:15,755 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:28:15,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:28:16,193 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-11-07 18:28:16,207 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 18:28:16,210 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:28:16,210 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 18:28:16,210 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:28:16,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 18:28:16,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 18:28:16,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 18:28:16,243 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 4 states. [2018-11-07 18:28:27,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:28:27,068 INFO L93 Difference]: Finished difference Result 2974 states and 5747 transitions. [2018-11-07 18:28:27,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 18:28:27,070 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-11-07 18:28:27,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:28:27,112 INFO L225 Difference]: With dead ends: 2974 [2018-11-07 18:28:27,112 INFO L226 Difference]: Without dead ends: 2193 [2018-11-07 18:28:27,125 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 18:28:27,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2018-11-07 18:28:27,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 2193. [2018-11-07 18:28:27,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2193 states. [2018-11-07 18:28:27,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2193 states to 2193 states and 3677 transitions. [2018-11-07 18:28:27,320 INFO L78 Accepts]: Start accepts. Automaton has 2193 states and 3677 transitions. Word has length 34 [2018-11-07 18:28:27,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:28:27,321 INFO L480 AbstractCegarLoop]: Abstraction has 2193 states and 3677 transitions. [2018-11-07 18:28:27,321 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 18:28:27,321 INFO L276 IsEmpty]: Start isEmpty. Operand 2193 states and 3677 transitions. [2018-11-07 18:28:27,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-11-07 18:28:27,331 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:28:27,332 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:28:27,333 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:28:27,334 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:28:27,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1770291326, now seen corresponding path program 1 times [2018-11-07 18:28:27,334 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:28:27,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:28:27,336 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:28:27,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:28:27,336 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:28:27,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:28:27,641 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:28:27,643 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:28:27,643 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 18:28:27,643 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:28:27,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 18:28:27,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 18:28:27,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 18:28:27,647 INFO L87 Difference]: Start difference. First operand 2193 states and 3677 transitions. Second operand 5 states. [2018-11-07 18:28:37,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:28:37,053 INFO L93 Difference]: Finished difference Result 6600 states and 11248 transitions. [2018-11-07 18:28:37,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:28:37,059 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2018-11-07 18:28:37,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:28:37,094 INFO L225 Difference]: With dead ends: 6600 [2018-11-07 18:28:37,094 INFO L226 Difference]: Without dead ends: 4413 [2018-11-07 18:28:37,103 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 18:28:37,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4413 states. [2018-11-07 18:28:37,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4413 to 4378. [2018-11-07 18:28:37,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4378 states. [2018-11-07 18:28:37,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4378 states to 4378 states and 6986 transitions. [2018-11-07 18:28:37,255 INFO L78 Accepts]: Start accepts. Automaton has 4378 states and 6986 transitions. Word has length 104 [2018-11-07 18:28:37,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:28:37,256 INFO L480 AbstractCegarLoop]: Abstraction has 4378 states and 6986 transitions. [2018-11-07 18:28:37,256 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 18:28:37,256 INFO L276 IsEmpty]: Start isEmpty. Operand 4378 states and 6986 transitions. [2018-11-07 18:28:37,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-11-07 18:28:37,271 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:28:37,271 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:28:37,271 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:28:37,271 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:28:37,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1648723851, now seen corresponding path program 1 times [2018-11-07 18:28:37,274 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:28:37,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:28:37,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:28:37,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:28:37,276 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:28:37,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:28:37,545 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:28:37,545 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:28:37,545 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 18:28:37,546 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:28:37,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 18:28:37,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 18:28:37,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 18:28:37,547 INFO L87 Difference]: Start difference. First operand 4378 states and 6986 transitions. Second operand 6 states. [2018-11-07 18:28:42,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:28:42,491 INFO L93 Difference]: Finished difference Result 11002 states and 17598 transitions. [2018-11-07 18:28:42,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:28:42,494 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-11-07 18:28:42,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:28:42,534 INFO L225 Difference]: With dead ends: 11002 [2018-11-07 18:28:42,535 INFO L226 Difference]: Without dead ends: 6630 [2018-11-07 18:28:42,550 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 18:28:42,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6630 states. [2018-11-07 18:28:42,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6630 to 6590. [2018-11-07 18:28:42,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6590 states. [2018-11-07 18:28:42,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6590 states to 6590 states and 9022 transitions. [2018-11-07 18:28:42,722 INFO L78 Accepts]: Start accepts. Automaton has 6590 states and 9022 transitions. Word has length 131 [2018-11-07 18:28:42,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:28:42,723 INFO L480 AbstractCegarLoop]: Abstraction has 6590 states and 9022 transitions. [2018-11-07 18:28:42,723 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 18:28:42,724 INFO L276 IsEmpty]: Start isEmpty. Operand 6590 states and 9022 transitions. [2018-11-07 18:28:42,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-11-07 18:28:42,731 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:28:42,732 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 18:28:42,732 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:28:42,732 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:28:42,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1769873797, now seen corresponding path program 1 times [2018-11-07 18:28:42,733 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:28:42,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:28:42,735 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:28:42,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:28:42,735 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:28:42,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:28:42,991 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-07 18:28:42,992 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:28:42,992 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 18:28:42,992 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:28:42,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 18:28:42,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 18:28:42,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 18:28:42,994 INFO L87 Difference]: Start difference. First operand 6590 states and 9022 transitions. Second operand 4 states. [2018-11-07 18:28:49,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:28:49,702 INFO L93 Difference]: Finished difference Result 26002 states and 36694 transitions. [2018-11-07 18:28:49,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 18:28:49,703 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 211 [2018-11-07 18:28:49,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:28:49,792 INFO L225 Difference]: With dead ends: 26002 [2018-11-07 18:28:49,792 INFO L226 Difference]: Without dead ends: 19418 [2018-11-07 18:28:49,834 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 18:28:49,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19418 states. [2018-11-07 18:28:50,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19418 to 19418. [2018-11-07 18:28:50,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19418 states. [2018-11-07 18:28:50,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19418 states to 19418 states and 25231 transitions. [2018-11-07 18:28:50,337 INFO L78 Accepts]: Start accepts. Automaton has 19418 states and 25231 transitions. Word has length 211 [2018-11-07 18:28:50,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:28:50,337 INFO L480 AbstractCegarLoop]: Abstraction has 19418 states and 25231 transitions. [2018-11-07 18:28:50,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 18:28:50,338 INFO L276 IsEmpty]: Start isEmpty. Operand 19418 states and 25231 transitions. [2018-11-07 18:28:50,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2018-11-07 18:28:50,350 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:28:50,351 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 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 18:28:50,351 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:28:50,351 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:28:50,351 INFO L82 PathProgramCache]: Analyzing trace with hash 828554779, now seen corresponding path program 1 times [2018-11-07 18:28:50,352 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:28:50,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:28:50,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:28:50,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:28:50,353 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:28:50,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:28:51,057 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 179 proven. 94 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-11-07 18:28:51,057 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:28:51,058 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:28:51,060 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 362 with the following transitions: [2018-11-07 18:28:51,068 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1795], [1797], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2216], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2272], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2328], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 18:28:51,157 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:28:51,158 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:28:52,141 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:28:52,143 INFO L272 AbstractInterpreter]: Visited 129 different actions 129 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 18:28:52,208 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:28:52,208 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:28:53,086 INFO L227 lantSequenceWeakener]: Weakened 349 states. On average, predicates are now at 77.49% of their original sizes. [2018-11-07 18:28:53,087 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:28:53,448 INFO L415 sIntCurrentIteration]: We unified 360 AI predicates to 360 [2018-11-07 18:28:53,448 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:28:53,449 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:28:53,450 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 18:28:53,450 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:28:53,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 18:28:53,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 18:28:53,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 18:28:53,451 INFO L87 Difference]: Start difference. First operand 19418 states and 25231 transitions. Second operand 7 states. [2018-11-07 18:29:01,544 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:29:28,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:29:28,683 INFO L93 Difference]: Finished difference Result 39535 states and 51193 transitions. [2018-11-07 18:29:28,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:29:28,683 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 361 [2018-11-07 18:29:28,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:29:28,760 INFO L225 Difference]: With dead ends: 39535 [2018-11-07 18:29:28,760 INFO L226 Difference]: Without dead ends: 20123 [2018-11-07 18:29:28,817 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 361 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 18:29:28,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20123 states. [2018-11-07 18:29:29,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20123 to 20121. [2018-11-07 18:29:29,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20121 states. [2018-11-07 18:29:29,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20121 states to 20121 states and 25946 transitions. [2018-11-07 18:29:29,271 INFO L78 Accepts]: Start accepts. Automaton has 20121 states and 25946 transitions. Word has length 361 [2018-11-07 18:29:29,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:29:29,272 INFO L480 AbstractCegarLoop]: Abstraction has 20121 states and 25946 transitions. [2018-11-07 18:29:29,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 18:29:29,273 INFO L276 IsEmpty]: Start isEmpty. Operand 20121 states and 25946 transitions. [2018-11-07 18:29:29,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2018-11-07 18:29:29,290 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:29:29,290 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:29:29,292 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:29:29,292 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:29:29,292 INFO L82 PathProgramCache]: Analyzing trace with hash 2089856127, now seen corresponding path program 1 times [2018-11-07 18:29:29,293 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:29:29,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:29:29,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:29:29,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:29:29,294 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:29:29,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:29:29,912 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 18:29:30,116 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 18:29:30,328 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 18:29:30,767 WARN L179 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-07 18:29:31,136 WARN L179 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-11-07 18:29:31,828 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 140 proven. 301 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 18:29:31,828 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:29:31,828 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:29:31,828 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 480 with the following transitions: [2018-11-07 18:29:31,829 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1795], [1797], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2440], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 18:29:31,839 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:29:31,839 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:29:32,295 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:29:32,295 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:29:32,305 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:29:32,305 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:29:33,267 INFO L227 lantSequenceWeakener]: Weakened 186 states. On average, predicates are now at 77.47% of their original sizes. [2018-11-07 18:29:33,268 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:29:35,112 INFO L415 sIntCurrentIteration]: We unified 478 AI predicates to 478 [2018-11-07 18:29:35,113 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:29:35,113 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:29:35,113 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2018-11-07 18:29:35,113 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:29:35,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 18:29:35,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 18:29:35,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2018-11-07 18:29:35,115 INFO L87 Difference]: Start difference. First operand 20121 states and 25946 transitions. Second operand 16 states. [2018-11-07 18:30:06,564 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:30:45,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:30:45,020 INFO L93 Difference]: Finished difference Result 42018 states and 53838 transitions. [2018-11-07 18:30:45,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-07 18:30:45,020 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 479 [2018-11-07 18:30:45,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:30:45,098 INFO L225 Difference]: With dead ends: 42018 [2018-11-07 18:30:45,099 INFO L226 Difference]: Without dead ends: 22606 [2018-11-07 18:30:45,126 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 486 GetRequests, 448 SyntacticMatches, 16 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552 [2018-11-07 18:30:45,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22606 states. [2018-11-07 18:30:45,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22606 to 22367. [2018-11-07 18:30:45,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22367 states. [2018-11-07 18:30:45,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22367 states to 22367 states and 28234 transitions. [2018-11-07 18:30:45,542 INFO L78 Accepts]: Start accepts. Automaton has 22367 states and 28234 transitions. Word has length 479 [2018-11-07 18:30:45,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:30:45,543 INFO L480 AbstractCegarLoop]: Abstraction has 22367 states and 28234 transitions. [2018-11-07 18:30:45,543 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-07 18:30:45,543 INFO L276 IsEmpty]: Start isEmpty. Operand 22367 states and 28234 transitions. [2018-11-07 18:30:45,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 890 [2018-11-07 18:30:45,585 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:30:45,586 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:30:45,587 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:30:45,587 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:30:45,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1589768013, now seen corresponding path program 1 times [2018-11-07 18:30:45,588 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:30:45,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:30:45,589 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:30:45,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:30:45,589 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:30:45,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:30:47,234 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 309 proven. 94 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2018-11-07 18:30:47,234 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:30:47,234 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:30:47,235 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 890 with the following transitions: [2018-11-07 18:30:47,236 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [37], [739], [740], [744], [748], [752], [756], [760], [764], [768], [772], [776], [780], [784], [788], [792], [796], [800], [804], [808], [812], [816], [820], [824], [828], [832], [836], [840], [844], [848], [852], [856], [860], [864], [868], [872], [876], [880], [884], [888], [892], [896], [900], [904], [908], [912], [916], [920], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [964], [968], [972], [976], [980], [984], [988], [992], [996], [1000], [1004], [1008], [1012], [1016], [1020], [1024], [1028], [1032], [1036], [1040], [1044], [1048], [1052], [1056], [1060], [1064], [1068], [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], [1184], [1188], [1192], [1196], [1200], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1248], [1252], [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], [1360], [1364], [1368], [1372], [1376], [1380], [1384], [1388], [1392], [1396], [1400], [1404], [1408], [1412], [1416], [1420], [1424], [1428], [1432], [1436], [1440], [1444], [1448], [1452], [1456], [1460], [1464], [1468], [1472], [1476], [1480], [1484], [1488], [1492], [1496], [1500], [1504], [1508], [1512], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1552], [1556], [1560], [1564], [1568], [1572], [1576], [1580], [1584], [1588], [1592], [1596], [1600], [1604], [1608], [1612], [1616], [1620], [1622], [1623], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1795], [1797], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2216], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2272], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2328], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2949], [2953], [2957], [2961], [2965], [2969], [2973], [2977], [2981], [2985], [2989], [2993], [2995], [2996], [3000], [3004], [3010], [3014], [3016], [3021], [3022], [3023], [3024], [3025], [3026], [3027], [3029], [3030] [2018-11-07 18:30:47,257 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:30:47,257 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:30:48,809 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:30:48,809 INFO L272 AbstractInterpreter]: Visited 538 different actions 1070 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:30:48,851 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:30:48,851 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:30:50,381 INFO L227 lantSequenceWeakener]: Weakened 580 states. On average, predicates are now at 77.53% of their original sizes. [2018-11-07 18:30:50,382 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:30:53,377 INFO L415 sIntCurrentIteration]: We unified 888 AI predicates to 888 [2018-11-07 18:30:53,377 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:30:53,378 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:30:53,378 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [30] imperfect sequences [6] total 34 [2018-11-07 18:30:53,378 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:30:53,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-11-07 18:30:53,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-11-07 18:30:53,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=755, Unknown=0, NotChecked=0, Total=870 [2018-11-07 18:30:53,380 INFO L87 Difference]: Start difference. First operand 22367 states and 28234 transitions. Second operand 30 states. Received shutdown request... [2018-11-07 18:31:33,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-07 18:31:33,810 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 18:31:33,816 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 18:31:33,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:31:33 BoogieIcfgContainer [2018-11-07 18:31:33,816 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 18:31:33,817 INFO L168 Benchmark]: Toolchain (without parser) took 209342.96 ms. Allocated memory was 1.5 GB in the beginning and 5.4 GB in the end (delta: 3.8 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -796.1 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-11-07 18:31:33,818 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 18:31:33,819 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1863.62 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-11-07 18:31:33,819 INFO L168 Benchmark]: Boogie Procedure Inliner took 298.72 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 757.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -948.5 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-07 18:31:33,820 INFO L168 Benchmark]: Boogie Preprocessor took 217.34 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2018-11-07 18:31:33,821 INFO L168 Benchmark]: RCFGBuilder took 8681.51 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 503.9 MB). Peak memory consumption was 503.9 MB. Max. memory is 7.1 GB. [2018-11-07 18:31:33,822 INFO L168 Benchmark]: TraceAbstraction took 198276.61 ms. Allocated memory was 2.3 GB in the beginning and 5.4 GB in the end (delta: 3.1 GB). Free memory was 1.7 GB in the beginning and 2.2 GB in the end (delta: -513.9 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-11-07 18:31:33,827 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 1863.62 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 298.72 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 757.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -948.5 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 217.34 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8681.51 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 503.9 MB). Peak memory consumption was 503.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 198276.61 ms. Allocated memory was 2.3 GB in the beginning and 5.4 GB in the end (delta: 3.1 GB). Free memory was 1.7 GB in the beginning and 2.2 GB in the end (delta: -513.9 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 90). Cancelled while BasicCegarLoop was constructing difference of abstraction (22367states) and FLOYD_HOARE automaton (currently 25 states, 30 states before enhancement),while ReachableStatesComputation was computing reachable states (2282 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 198.1s OverallTime, 7 OverallIterations, 5 TraceHistogramMax, 178.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2794 SDtfs, 16686 SDslu, 1201 SDs, 0 SdLazy, 40101 SolverSat, 5244 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 76.1s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 1785 GetRequests, 1594 SyntacticMatches, 98 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 976 ImplicationChecksByTransitivity, 6.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22367occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.2s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9980400781310154 AbsIntWeakeningRatio, 0.06373117033603708 AbsIntAvgWeakeningVarsNumRemoved, 16.265353418308226 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 6 MinimizatonAttempts, 316 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 2209 NumberOfCodeBlocks, 2209 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 2202 ConstructedInterpolants, 0 QuantifiedInterpolants, 3541476 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 1249/1738 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown