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/Problem16_label25_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 19:21:13,755 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 19:21:13,762 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 19:21:13,774 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 19:21:13,775 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 19:21:13,776 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 19:21:13,777 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 19:21:13,780 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 19:21:13,782 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 19:21:13,785 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 19:21:13,786 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 19:21:13,786 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 19:21:13,787 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 19:21:13,790 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 19:21:13,792 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 19:21:13,793 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 19:21:13,795 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 19:21:13,801 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 19:21:13,803 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 19:21:13,805 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 19:21:13,807 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 19:21:13,808 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 19:21:13,812 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 19:21:13,812 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 19:21:13,812 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 19:21:13,813 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 19:21:13,815 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 19:21:13,816 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 19:21:13,817 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 19:21:13,818 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 19:21:13,818 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 19:21:13,818 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 19:21:13,820 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 19:21:13,821 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 19:21:13,822 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 19:21:13,822 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 19:21:13,823 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 [2018-11-12 19:21:13,847 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 19:21:13,847 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 19:21:13,848 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 19:21:13,848 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 19:21:13,849 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 19:21:13,849 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 19:21:13,849 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 19:21:13,849 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 19:21:13,849 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 19:21:13,850 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 19:21:13,850 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 19:21:13,850 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 19:21:13,850 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 19:21:13,851 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 19:21:13,851 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 19:21:13,851 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 19:21:13,851 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 19:21:13,852 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 19:21:13,852 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 19:21:13,852 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 19:21:13,852 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 19:21:13,852 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 19:21:13,853 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 19:21:13,853 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 19:21:13,853 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 19:21:13,853 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 19:21:13,853 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 19:21:13,854 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 19:21:13,854 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 19:21:13,854 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 19:21:13,854 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 19:21:13,854 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 19:21:13,855 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 19:21:13,855 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 19:21:13,855 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 19:21:13,904 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 19:21:13,917 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 19:21:13,920 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 19:21:13,922 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 19:21:13,922 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 19:21:13,923 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label25_true-unreach-call.c [2018-11-12 19:21:13,977 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1e269933/37e6847cc9564a67bb5dea50c18b5bf6/FLAGaca3217e5 [2018-11-12 19:21:14,627 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 19:21:14,631 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label25_true-unreach-call.c [2018-11-12 19:21:14,651 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1e269933/37e6847cc9564a67bb5dea50c18b5bf6/FLAGaca3217e5 [2018-11-12 19:21:14,668 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1e269933/37e6847cc9564a67bb5dea50c18b5bf6 [2018-11-12 19:21:14,679 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 19:21:14,680 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 19:21:14,681 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 19:21:14,681 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 19:21:14,685 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 19:21:14,686 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:21:14" (1/1) ... [2018-11-12 19:21:14,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eedc8ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:14, skipping insertion in model container [2018-11-12 19:21:14,692 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:21:14" (1/1) ... [2018-11-12 19:21:14,702 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 19:21:14,799 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 19:21:15,576 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:21:15,580 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 19:21:15,844 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:21:15,866 INFO L193 MainTranslator]: Completed translation [2018-11-12 19:21:15,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:15 WrapperNode [2018-11-12 19:21:15,867 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 19:21:15,868 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 19:21:15,868 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 19:21:15,869 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 19:21:16,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:15" (1/1) ... [2018-11-12 19:21:16,060 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:15" (1/1) ... [2018-11-12 19:21:16,074 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 19:21:16,074 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 19:21:16,074 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 19:21:16,075 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 19:21:16,086 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:15" (1/1) ... [2018-11-12 19:21:16,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:15" (1/1) ... [2018-11-12 19:21:16,094 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:15" (1/1) ... [2018-11-12 19:21:16,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:15" (1/1) ... [2018-11-12 19:21:16,172 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:15" (1/1) ... [2018-11-12 19:21:16,205 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:15" (1/1) ... [2018-11-12 19:21:16,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:15" (1/1) ... [2018-11-12 19:21:16,238 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 19:21:16,239 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 19:21:16,239 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 19:21:16,239 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 19:21:16,240 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:15" (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 [2018-11-12 19:21:16,307 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 19:21:16,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 19:21:16,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 19:21:16,308 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 19:21:16,308 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 19:21:16,308 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 19:21:16,308 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 19:21:16,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 19:21:16,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 19:21:16,309 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 19:21:16,309 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 19:21:23,390 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 19:21:23,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:21:23 BoogieIcfgContainer [2018-11-12 19:21:23,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 19:21:23,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 19:21:23,394 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 19:21:23,397 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 19:21:23,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 07:21:14" (1/3) ... [2018-11-12 19:21:23,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67637c2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:21:23, skipping insertion in model container [2018-11-12 19:21:23,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:21:15" (2/3) ... [2018-11-12 19:21:23,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67637c2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:21:23, skipping insertion in model container [2018-11-12 19:21:23,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:21:23" (3/3) ... [2018-11-12 19:21:23,402 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label25_true-unreach-call.c [2018-11-12 19:21:23,411 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 19:21:23,420 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 19:21:23,435 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 19:21:23,477 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 19:21:23,477 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 19:21:23,478 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 19:21:23,478 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 19:21:23,478 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 19:21:23,478 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 19:21:23,478 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 19:21:23,479 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 19:21:23,513 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-12 19:21:23,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-11-12 19:21:23,523 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:21:23,524 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:21:23,527 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:21:23,533 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:21:23,533 INFO L82 PathProgramCache]: Analyzing trace with hash -154170549, now seen corresponding path program 1 times [2018-11-12 19:21:23,536 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:21:23,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:21:23,585 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:21:23,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:21:23,586 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:21:23,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:21:24,040 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:21:24,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:21:24,164 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:21:24,165 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 19:21:24,165 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:21:24,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 19:21:24,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 19:21:24,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 19:21:24,198 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-12 19:21:27,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:21:27,500 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-12 19:21:27,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 19:21:27,503 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2018-11-12 19:21:27,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:21:27,528 INFO L225 Difference]: With dead ends: 1156 [2018-11-12 19:21:27,528 INFO L226 Difference]: Without dead ends: 744 [2018-11-12 19:21:27,538 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 19:21:27,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-12 19:21:27,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-12 19:21:27,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-12 19:21:27,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1329 transitions. [2018-11-12 19:21:27,639 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1329 transitions. Word has length 57 [2018-11-12 19:21:27,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:21:27,640 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1329 transitions. [2018-11-12 19:21:27,641 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 19:21:27,641 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1329 transitions. [2018-11-12 19:21:27,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-11-12 19:21:27,651 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:21:27,652 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:21:27,652 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:21:27,652 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:21:27,653 INFO L82 PathProgramCache]: Analyzing trace with hash -190456344, now seen corresponding path program 1 times [2018-11-12 19:21:27,653 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:21:27,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:21:27,654 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:21:27,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:21:27,655 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:21:27,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:21:28,017 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:21:28,165 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:21:28,165 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:21:28,165 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 19:21:28,165 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:21:28,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:21:28,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:21:28,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:21:28,169 INFO L87 Difference]: Start difference. First operand 744 states and 1329 transitions. Second operand 6 states. [2018-11-12 19:21:34,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:21:34,985 INFO L93 Difference]: Finished difference Result 2183 states and 3908 transitions. [2018-11-12 19:21:34,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:21:34,986 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2018-11-12 19:21:34,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:21:35,000 INFO L225 Difference]: With dead ends: 2183 [2018-11-12 19:21:35,001 INFO L226 Difference]: Without dead ends: 1445 [2018-11-12 19:21:35,007 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 19:21:35,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2018-11-12 19:21:35,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 1424. [2018-11-12 19:21:35,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1424 states. [2018-11-12 19:21:35,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 2239 transitions. [2018-11-12 19:21:35,071 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 2239 transitions. Word has length 165 [2018-11-12 19:21:35,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:21:35,072 INFO L480 AbstractCegarLoop]: Abstraction has 1424 states and 2239 transitions. [2018-11-12 19:21:35,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:21:35,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 2239 transitions. [2018-11-12 19:21:35,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-11-12 19:21:35,077 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:21:35,077 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:21:35,077 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:21:35,078 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:21:35,078 INFO L82 PathProgramCache]: Analyzing trace with hash 2100649045, now seen corresponding path program 1 times [2018-11-12 19:21:35,078 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:21:35,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:21:35,079 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:21:35,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:21:35,080 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:21:35,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:21:35,466 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:21:35,867 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:21:35,868 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:21:35,868 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 19:21:35,868 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:21:35,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:21:35,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:21:35,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:21:35,870 INFO L87 Difference]: Start difference. First operand 1424 states and 2239 transitions. Second operand 6 states. [2018-11-12 19:21:40,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:21:40,760 INFO L93 Difference]: Finished difference Result 3902 states and 6351 transitions. [2018-11-12 19:21:40,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:21:40,761 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 168 [2018-11-12 19:21:40,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:21:40,777 INFO L225 Difference]: With dead ends: 3902 [2018-11-12 19:21:40,777 INFO L226 Difference]: Without dead ends: 2484 [2018-11-12 19:21:40,782 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 19:21:40,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2484 states. [2018-11-12 19:21:40,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2484 to 2474. [2018-11-12 19:21:40,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2474 states. [2018-11-12 19:21:40,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 3744 transitions. [2018-11-12 19:21:40,858 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 3744 transitions. Word has length 168 [2018-11-12 19:21:40,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:21:40,859 INFO L480 AbstractCegarLoop]: Abstraction has 2474 states and 3744 transitions. [2018-11-12 19:21:40,859 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:21:40,859 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 3744 transitions. [2018-11-12 19:21:40,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-11-12 19:21:40,865 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:21:40,865 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 19:21:40,866 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:21:40,866 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:21:40,866 INFO L82 PathProgramCache]: Analyzing trace with hash 778239368, now seen corresponding path program 1 times [2018-11-12 19:21:40,866 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:21:40,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:21:40,867 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:21:40,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:21:40,868 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:21:40,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:21:41,189 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 100 proven. 106 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:21:41,189 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:21:41,190 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:21:41,191 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 285 with the following transitions: [2018-11-12 19:21:41,193 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [535], [537], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 19:21:41,243 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:21:41,244 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:21:42,070 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:21:42,072 INFO L272 AbstractInterpreter]: Visited 121 different actions 121 times. Never merged. Never widened. Performed 2034 root evaluator evaluations with a maximum evaluation depth of 6. Performed 2034 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 24 variables. [2018-11-12 19:21:42,127 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:21:42,127 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:21:43,056 INFO L227 lantSequenceWeakener]: Weakened 262 states. On average, predicates are now at 78.04% of their original sizes. [2018-11-12 19:21:43,056 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:21:44,269 INFO L415 sIntCurrentIteration]: We unified 283 AI predicates to 283 [2018-11-12 19:21:44,270 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:21:44,271 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:21:44,271 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-11-12 19:21:44,271 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:21:44,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-12 19:21:44,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-12 19:21:44,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-12 19:21:44,273 INFO L87 Difference]: Start difference. First operand 2474 states and 3744 transitions. Second operand 10 states. [2018-11-12 19:21:49,047 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:22:05,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:22:05,757 INFO L93 Difference]: Finished difference Result 5285 states and 7974 transitions. [2018-11-12 19:22:05,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-12 19:22:05,757 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 284 [2018-11-12 19:22:05,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:22:05,773 INFO L225 Difference]: With dead ends: 5285 [2018-11-12 19:22:05,773 INFO L226 Difference]: Without dead ends: 2817 [2018-11-12 19:22:05,783 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 287 GetRequests, 232 SyntacticMatches, 43 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-11-12 19:22:05,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2018-11-12 19:22:05,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 2812. [2018-11-12 19:22:05,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2812 states. [2018-11-12 19:22:05,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2812 states to 2812 states and 4089 transitions. [2018-11-12 19:22:05,860 INFO L78 Accepts]: Start accepts. Automaton has 2812 states and 4089 transitions. Word has length 284 [2018-11-12 19:22:05,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:22:05,861 INFO L480 AbstractCegarLoop]: Abstraction has 2812 states and 4089 transitions. [2018-11-12 19:22:05,861 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-12 19:22:05,861 INFO L276 IsEmpty]: Start isEmpty. Operand 2812 states and 4089 transitions. [2018-11-12 19:22:05,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-11-12 19:22:05,870 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:22:05,870 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-12 19:22:05,871 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:22:05,871 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:22:05,871 INFO L82 PathProgramCache]: Analyzing trace with hash 160193259, now seen corresponding path program 1 times [2018-11-12 19:22:05,871 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:22:05,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:22:05,873 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:22:05,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:22:05,873 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:22:05,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:22:06,180 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 245 proven. 110 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-11-12 19:22:06,181 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:22:06,181 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:22:06,181 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 377 with the following transitions: [2018-11-12 19:22:06,182 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [535], [537], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 19:22:06,187 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:22:06,187 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:22:06,282 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:22:06,815 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:22:06,815 INFO L272 AbstractInterpreter]: Visited 125 different actions 362 times. Merged at 5 different actions 9 times. Never widened. Performed 6064 root evaluator evaluations with a maximum evaluation depth of 6. Performed 6064 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:22:06,855 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:22:06,855 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:22:07,972 INFO L227 lantSequenceWeakener]: Weakened 132 states. On average, predicates are now at 78.27% of their original sizes. [2018-11-12 19:22:07,973 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:22:10,096 INFO L415 sIntCurrentIteration]: We unified 375 AI predicates to 375 [2018-11-12 19:22:10,096 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:22:10,097 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:22:10,097 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-11-12 19:22:10,097 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:22:10,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-12 19:22:10,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-12 19:22:10,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2018-11-12 19:22:10,100 INFO L87 Difference]: Start difference. First operand 2812 states and 4089 transitions. Second operand 19 states. [2018-11-12 19:22:38,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:22:38,587 INFO L93 Difference]: Finished difference Result 6454 states and 9413 transitions. [2018-11-12 19:22:38,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-12 19:22:38,587 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 376 [2018-11-12 19:22:38,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:22:38,605 INFO L225 Difference]: With dead ends: 6454 [2018-11-12 19:22:38,605 INFO L226 Difference]: Without dead ends: 3986 [2018-11-12 19:22:38,615 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 385 GetRequests, 338 SyntacticMatches, 20 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=196, Invalid=616, Unknown=0, NotChecked=0, Total=812 [2018-11-12 19:22:38,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3986 states. [2018-11-12 19:22:38,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3986 to 3756. [2018-11-12 19:22:38,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3756 states. [2018-11-12 19:22:38,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3756 states to 3756 states and 5082 transitions. [2018-11-12 19:22:38,711 INFO L78 Accepts]: Start accepts. Automaton has 3756 states and 5082 transitions. Word has length 376 [2018-11-12 19:22:38,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:22:38,712 INFO L480 AbstractCegarLoop]: Abstraction has 3756 states and 5082 transitions. [2018-11-12 19:22:38,712 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-12 19:22:38,712 INFO L276 IsEmpty]: Start isEmpty. Operand 3756 states and 5082 transitions. [2018-11-12 19:22:38,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2018-11-12 19:22:38,722 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:22:38,722 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-12 19:22:38,723 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:22:38,723 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:22:38,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1946367843, now seen corresponding path program 1 times [2018-11-12 19:22:38,723 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:22:38,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:22:38,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:22:38,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:22:38,724 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:22:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:22:39,558 WARN L179 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-12 19:22:39,900 WARN L179 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-11-12 19:22:41,150 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 269 proven. 110 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-12 19:22:41,150 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:22:41,151 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:22:41,151 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 413 with the following transitions: [2018-11-12 19:22:41,151 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [535], [537], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [904], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 19:22:41,156 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:22:41,156 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:22:41,227 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:22:41,462 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:22:41,463 INFO L272 AbstractInterpreter]: Visited 137 different actions 398 times. Merged at 5 different actions 9 times. Never widened. Performed 5977 root evaluator evaluations with a maximum evaluation depth of 6. Performed 5977 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:22:41,470 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:22:41,470 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:22:42,061 INFO L227 lantSequenceWeakener]: Weakened 132 states. On average, predicates are now at 78.27% of their original sizes. [2018-11-12 19:22:42,061 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:22:43,057 INFO L415 sIntCurrentIteration]: We unified 411 AI predicates to 411 [2018-11-12 19:22:43,057 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:22:43,058 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:22:43,058 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [13] total 29 [2018-11-12 19:22:43,058 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:22:43,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-12 19:22:43,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-12 19:22:43,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2018-11-12 19:22:43,060 INFO L87 Difference]: Start difference. First operand 3756 states and 5082 transitions. Second operand 18 states. [2018-11-12 19:23:18,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:23:18,706 INFO L93 Difference]: Finished difference Result 7459 states and 10494 transitions. [2018-11-12 19:23:18,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-12 19:23:18,707 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 412 [2018-11-12 19:23:18,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:23:18,725 INFO L225 Difference]: With dead ends: 7459 [2018-11-12 19:23:18,725 INFO L226 Difference]: Without dead ends: 4647 [2018-11-12 19:23:18,735 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 420 GetRequests, 375 SyntacticMatches, 20 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=175, Invalid=527, Unknown=0, NotChecked=0, Total=702 [2018-11-12 19:23:18,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4647 states. [2018-11-12 19:23:18,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4647 to 4415. [2018-11-12 19:23:18,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4415 states. [2018-11-12 19:23:18,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4415 states to 4415 states and 5781 transitions. [2018-11-12 19:23:18,842 INFO L78 Accepts]: Start accepts. Automaton has 4415 states and 5781 transitions. Word has length 412 [2018-11-12 19:23:18,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:23:18,843 INFO L480 AbstractCegarLoop]: Abstraction has 4415 states and 5781 transitions. [2018-11-12 19:23:18,843 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-12 19:23:18,843 INFO L276 IsEmpty]: Start isEmpty. Operand 4415 states and 5781 transitions. [2018-11-12 19:23:18,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2018-11-12 19:23:18,859 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:23:18,859 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-12 19:23:18,860 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:23:18,860 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:23:18,860 INFO L82 PathProgramCache]: Analyzing trace with hash -475876477, now seen corresponding path program 1 times [2018-11-12 19:23:18,860 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:23:18,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:23:18,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:23:18,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:23:18,862 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:23:18,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:23:19,472 WARN L179 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-11-12 19:23:20,061 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 260 proven. 123 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-11-12 19:23:20,061 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:23:20,061 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:23:20,062 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 525 with the following transitions: [2018-11-12 19:23:20,062 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [535], [537], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 19:23:20,067 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:23:20,067 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:23:20,871 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:23:20,871 INFO L272 AbstractInterpreter]: Visited 249 different actions 492 times. Merged at 5 different actions 5 times. Never widened. Performed 6298 root evaluator evaluations with a maximum evaluation depth of 6. Performed 6298 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:23:20,878 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:23:20,878 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:23:21,559 INFO L227 lantSequenceWeakener]: Weakened 294 states. On average, predicates are now at 78.08% of their original sizes. [2018-11-12 19:23:21,559 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:23:24,217 INFO L415 sIntCurrentIteration]: We unified 523 AI predicates to 523 [2018-11-12 19:23:24,218 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:23:24,218 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:23:24,218 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [8] total 24 [2018-11-12 19:23:24,218 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:23:24,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-12 19:23:24,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-12 19:23:24,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2018-11-12 19:23:24,220 INFO L87 Difference]: Start difference. First operand 4415 states and 5781 transitions. Second operand 18 states. [2018-11-12 19:23:25,772 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:23:40,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:23:40,127 INFO L93 Difference]: Finished difference Result 8208 states and 11190 transitions. [2018-11-12 19:23:40,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-12 19:23:40,127 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 524 [2018-11-12 19:23:40,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:23:40,145 INFO L225 Difference]: With dead ends: 8208 [2018-11-12 19:23:40,145 INFO L226 Difference]: Without dead ends: 5051 [2018-11-12 19:23:40,154 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 539 GetRequests, 422 SyntacticMatches, 85 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 696 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=213, Invalid=909, Unknown=0, NotChecked=0, Total=1122 [2018-11-12 19:23:40,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5051 states. [2018-11-12 19:23:40,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5051 to 5046. [2018-11-12 19:23:40,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5046 states. [2018-11-12 19:23:40,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5046 states to 5046 states and 6446 transitions. [2018-11-12 19:23:40,274 INFO L78 Accepts]: Start accepts. Automaton has 5046 states and 6446 transitions. Word has length 524 [2018-11-12 19:23:40,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:23:40,274 INFO L480 AbstractCegarLoop]: Abstraction has 5046 states and 6446 transitions. [2018-11-12 19:23:40,275 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-12 19:23:40,275 INFO L276 IsEmpty]: Start isEmpty. Operand 5046 states and 6446 transitions. [2018-11-12 19:23:40,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2018-11-12 19:23:40,295 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:23:40,296 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-12 19:23:40,296 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:23:40,296 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:23:40,296 INFO L82 PathProgramCache]: Analyzing trace with hash 213295347, now seen corresponding path program 1 times [2018-11-12 19:23:40,297 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:23:40,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:23:40,297 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:23:40,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:23:40,298 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:23:40,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:23:40,799 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:23:41,434 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 156 proven. 260 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-12 19:23:41,435 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:23:41,435 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:23:41,435 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 533 with the following transitions: [2018-11-12 19:23:41,436 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [535], [537], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 19:23:41,441 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:23:41,441 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:23:47,033 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:23:47,033 INFO L272 AbstractInterpreter]: Visited 257 different actions 2516 times. Merged at 5 different actions 45 times. Widened at 1 different actions 5 times. Performed 44347 root evaluator evaluations with a maximum evaluation depth of 6. Performed 44347 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:23:47,040 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:23:47,040 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:23:47,762 INFO L227 lantSequenceWeakener]: Weakened 78 states. On average, predicates are now at 80.01% of their original sizes. [2018-11-12 19:23:47,763 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:23:48,115 INFO L415 sIntCurrentIteration]: We unified 531 AI predicates to 531 [2018-11-12 19:23:48,115 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:23:48,115 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:23:48,115 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [6] total 26 [2018-11-12 19:23:48,116 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:23:48,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-12 19:23:48,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-12 19:23:48,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2018-11-12 19:23:48,117 INFO L87 Difference]: Start difference. First operand 5046 states and 6446 transitions. Second operand 22 states. [2018-11-12 19:23:50,568 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:24:05,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:24:05,855 INFO L93 Difference]: Finished difference Result 8844 states and 11869 transitions. [2018-11-12 19:24:05,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-11-12 19:24:05,855 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 532 [2018-11-12 19:24:05,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:24:05,875 INFO L225 Difference]: With dead ends: 8844 [2018-11-12 19:24:05,875 INFO L226 Difference]: Without dead ends: 5687 [2018-11-12 19:24:05,885 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 542 GetRequests, 511 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=214, Invalid=842, Unknown=0, NotChecked=0, Total=1056 [2018-11-12 19:24:05,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5687 states. [2018-11-12 19:24:05,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5687 to 5679. [2018-11-12 19:24:05,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5679 states. [2018-11-12 19:24:06,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5679 states to 5679 states and 7120 transitions. [2018-11-12 19:24:06,002 INFO L78 Accepts]: Start accepts. Automaton has 5679 states and 7120 transitions. Word has length 532 [2018-11-12 19:24:06,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:24:06,003 INFO L480 AbstractCegarLoop]: Abstraction has 5679 states and 7120 transitions. [2018-11-12 19:24:06,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-12 19:24:06,003 INFO L276 IsEmpty]: Start isEmpty. Operand 5679 states and 7120 transitions. [2018-11-12 19:24:06,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 617 [2018-11-12 19:24:06,017 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:24:06,018 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-11-12 19:24:06,018 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:24:06,018 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:24:06,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1362176282, now seen corresponding path program 1 times [2018-11-12 19:24:06,019 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:24:06,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:24:06,020 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:24:06,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:24:06,020 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:24:06,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:24:08,048 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 300 proven. 223 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2018-11-12 19:24:08,049 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:24:08,049 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:24:08,049 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 617 with the following transitions: [2018-11-12 19:24:08,050 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [535], [537], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 19:24:08,054 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:24:08,054 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:24:08,098 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:24:08,773 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:24:08,773 INFO L272 AbstractInterpreter]: Visited 250 different actions 995 times. Merged at 7 different actions 28 times. Never widened. Performed 13303 root evaluator evaluations with a maximum evaluation depth of 6. Performed 13303 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 5 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-12 19:24:08,780 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:24:08,780 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:24:09,277 INFO L227 lantSequenceWeakener]: Weakened 613 states. On average, predicates are now at 77.61% of their original sizes. [2018-11-12 19:24:09,277 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:24:09,393 INFO L415 sIntCurrentIteration]: We unified 615 AI predicates to 615 [2018-11-12 19:24:09,393 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:24:09,393 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:24:09,394 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 22 [2018-11-12 19:24:09,394 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:24:09,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 19:24:09,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 19:24:09,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-12 19:24:09,395 INFO L87 Difference]: Start difference. First operand 5679 states and 7120 transitions. Second operand 11 states. [2018-11-12 19:24:24,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:24:24,646 INFO L93 Difference]: Finished difference Result 11170 states and 14660 transitions. [2018-11-12 19:24:24,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-12 19:24:24,646 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 616 [2018-11-12 19:24:24,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:24:24,668 INFO L225 Difference]: With dead ends: 11170 [2018-11-12 19:24:24,668 INFO L226 Difference]: Without dead ends: 7673 [2018-11-12 19:24:24,679 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 627 GetRequests, 606 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2018-11-12 19:24:24,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7673 states. [2018-11-12 19:24:24,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7673 to 7659. [2018-11-12 19:24:24,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7659 states. [2018-11-12 19:24:24,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7659 states to 7659 states and 9200 transitions. [2018-11-12 19:24:24,820 INFO L78 Accepts]: Start accepts. Automaton has 7659 states and 9200 transitions. Word has length 616 [2018-11-12 19:24:24,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:24:24,820 INFO L480 AbstractCegarLoop]: Abstraction has 7659 states and 9200 transitions. [2018-11-12 19:24:24,821 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 19:24:24,821 INFO L276 IsEmpty]: Start isEmpty. Operand 7659 states and 9200 transitions. [2018-11-12 19:24:24,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 634 [2018-11-12 19:24:24,835 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:24:24,835 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-11-12 19:24:24,835 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:24:24,836 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:24:24,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1675151911, now seen corresponding path program 1 times [2018-11-12 19:24:24,836 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:24:24,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:24:24,837 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:24:24,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:24:24,837 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:24:24,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:24:25,253 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:24:25,838 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 212 proven. 389 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2018-11-12 19:24:25,838 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:24:25,838 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:24:25,839 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 634 with the following transitions: [2018-11-12 19:24:25,839 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [535], [537], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [796], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 19:24:25,843 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:24:25,843 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:24:25,896 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:24:28,123 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:24:28,124 INFO L272 AbstractInterpreter]: Visited 258 different actions 2295 times. Merged at 7 different actions 61 times. Widened at 1 different actions 5 times. Performed 33512 root evaluator evaluations with a maximum evaluation depth of 6. Performed 33512 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 9 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-12 19:24:28,128 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:24:28,128 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:24:28,905 INFO L227 lantSequenceWeakener]: Weakened 139 states. On average, predicates are now at 77.47% of their original sizes. [2018-11-12 19:24:28,905 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:24:29,172 INFO L415 sIntCurrentIteration]: We unified 632 AI predicates to 632 [2018-11-12 19:24:29,173 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:24:29,173 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:24:29,173 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [6] total 19 [2018-11-12 19:24:29,174 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:24:29,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-12 19:24:29,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-12 19:24:29,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2018-11-12 19:24:29,175 INFO L87 Difference]: Start difference. First operand 7659 states and 9200 transitions. Second operand 15 states. Received shutdown request... [2018-11-12 19:24:56,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-12 19:24:56,046 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 19:24:56,053 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 19:24:56,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 07:24:56 BoogieIcfgContainer [2018-11-12 19:24:56,053 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 19:24:56,054 INFO L168 Benchmark]: Toolchain (without parser) took 221375.05 ms. Allocated memory was 1.5 GB in the beginning and 4.9 GB in the end (delta: 3.3 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -643.2 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-11-12 19:24:56,056 INFO L168 Benchmark]: CDTParser took 0.26 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. [2018-11-12 19:24:56,056 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1186.75 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: 87.2 MB). Peak memory consumption was 87.2 MB. Max. memory is 7.1 GB. [2018-11-12 19:24:56,057 INFO L168 Benchmark]: Boogie Procedure Inliner took 205.79 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 763.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -890.8 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2018-11-12 19:24:56,058 INFO L168 Benchmark]: Boogie Preprocessor took 163.96 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 19:24:56,058 INFO L168 Benchmark]: RCFGBuilder took 7153.06 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 267.9 MB). Peak memory consumption was 267.9 MB. Max. memory is 7.1 GB. [2018-11-12 19:24:56,059 INFO L168 Benchmark]: TraceAbstraction took 212660.74 ms. Allocated memory was 2.3 GB in the beginning and 4.9 GB in the end (delta: 2.6 GB). Free memory was 2.0 GB in the beginning and 2.1 GB in the end (delta: -107.5 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-11-12 19:24:56,064 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 1186.75 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: 87.2 MB). Peak memory consumption was 87.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 205.79 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 763.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -890.8 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 163.96 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 7153.06 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 267.9 MB). Peak memory consumption was 267.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 212660.74 ms. Allocated memory was 2.3 GB in the beginning and 4.9 GB in the end (delta: 2.6 GB). Free memory was 2.0 GB in the beginning and 2.1 GB in the end (delta: -107.5 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 157]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 157). Cancelled while BasicCegarLoop was constructing difference of abstraction (7659states) and FLOYD_HOARE automaton (currently 18 states, 15 states before enhancement),while ReachableStatesComputation was computing reachable states (6142 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 212.5s OverallTime, 10 OverallIterations, 5 TraceHistogramMax, 176.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2910 SDtfs, 26070 SDslu, 1551 SDs, 0 SdLazy, 29614 SolverSat, 4287 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 68.0s Time, PredicateUnifierStatistics: 14 DeclaredPredicates, 3466 GetRequests, 3109 SyntacticMatches, 172 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1825 ImplicationChecksByTransitivity, 9.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7659occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 11.3s AbstIntTime, 7 AbstIntIterations, 7 AbstIntStrong, 0.9978867661818251 AbsIntWeakeningRatio, 0.06824925816023739 AbsIntAvgWeakeningVarsNumRemoved, 13.186646884272998 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 9 MinimizatonAttempts, 525 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 6.3s InterpolantComputationTime, 3767 NumberOfCodeBlocks, 3767 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 3757 ConstructedInterpolants, 0 QuantifiedInterpolants, 11491663 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 2554/3875 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown