java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label41_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 04:07:27,629 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 04:07:27,631 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 04:07:27,645 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 04:07:27,645 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 04:07:27,646 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 04:07:27,649 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 04:07:27,652 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 04:07:27,653 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 04:07:27,655 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 04:07:27,656 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 04:07:27,656 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 04:07:27,659 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 04:07:27,662 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 04:07:27,669 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 04:07:27,670 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 04:07:27,675 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 04:07:27,676 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 04:07:27,678 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 04:07:27,685 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 04:07:27,686 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 04:07:27,687 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 04:07:27,689 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 04:07:27,695 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 04:07:27,695 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 04:07:27,696 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 04:07:27,696 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 04:07:27,697 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 04:07:27,713 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 04:07:27,714 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 04:07:27,715 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 04:07:27,715 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 04:07:27,715 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 04:07:27,716 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 04:07:27,716 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 04:07:27,716 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 04:07:27,716 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 04:07:27,716 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 04:07:27,720 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 04:07:27,720 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 04:07:27,721 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 04:07:27,722 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 04:07:27,722 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 04:07:27,722 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 04:07:27,722 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 04:07:27,722 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 04:07:27,722 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 04:07:27,723 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 04:07:27,723 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 04:07:27,723 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 04:07:27,723 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 04:07:27,723 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 04:07:27,725 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 04:07:27,725 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 04:07:27,725 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 04:07:27,725 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 04:07:27,726 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 04:07:27,726 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 04:07:27,726 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 04:07:27,726 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 04:07:27,726 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 04:07:27,727 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 04:07:27,772 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 04:07:27,793 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 04:07:27,797 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 04:07:27,798 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 04:07:27,799 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 04:07:27,799 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label41_true-unreach-call.c [2018-11-07 04:07:27,859 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fbf9d70c/ba29771f2ca24f78b7087671122279a9/FLAGf43df6725 [2018-11-07 04:07:28,572 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 04:07:28,573 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label41_true-unreach-call.c [2018-11-07 04:07:28,602 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fbf9d70c/ba29771f2ca24f78b7087671122279a9/FLAGf43df6725 [2018-11-07 04:07:28,622 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fbf9d70c/ba29771f2ca24f78b7087671122279a9 [2018-11-07 04:07:28,635 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 04:07:28,637 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 04:07:28,638 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 04:07:28,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 04:07:28,644 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 04:07:28,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:07:28" (1/1) ... [2018-11-07 04:07:28,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ae48c7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:28, skipping insertion in model container [2018-11-07 04:07:28,650 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:07:28" (1/1) ... [2018-11-07 04:07:28,662 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 04:07:28,813 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 04:07:29,944 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 04:07:29,950 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 04:07:30,406 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 04:07:30,439 INFO L193 MainTranslator]: Completed translation [2018-11-07 04:07:30,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:30 WrapperNode [2018-11-07 04:07:30,440 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 04:07:30,441 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 04:07:30,441 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 04:07:30,441 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 04:07:30,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:30" (1/1) ... [2018-11-07 04:07:30,702 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:30" (1/1) ... [2018-11-07 04:07:30,713 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 04:07:30,713 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 04:07:30,714 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 04:07:30,714 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 04:07:30,727 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:30" (1/1) ... [2018-11-07 04:07:30,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:30" (1/1) ... [2018-11-07 04:07:30,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:30" (1/1) ... [2018-11-07 04:07:30,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:30" (1/1) ... [2018-11-07 04:07:30,841 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:30" (1/1) ... [2018-11-07 04:07:30,874 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:30" (1/1) ... [2018-11-07 04:07:30,905 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:30" (1/1) ... [2018-11-07 04:07:30,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 04:07:30,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 04:07:30,925 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 04:07:30,925 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 04:07:30,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 04:07:30,997 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 04:07:30,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 04:07:30,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 04:07:30,997 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 04:07:30,998 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 04:07:30,998 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 04:07:30,998 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 04:07:30,998 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 04:07:30,998 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 04:07:30,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 04:07:30,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 04:07:30,999 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 04:07:31,000 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 04:07:39,008 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 04:07:39,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:07:39 BoogieIcfgContainer [2018-11-07 04:07:39,009 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 04:07:39,010 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 04:07:39,011 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 04:07:39,014 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 04:07:39,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:07:28" (1/3) ... [2018-11-07 04:07:39,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@659f0a98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:07:39, skipping insertion in model container [2018-11-07 04:07:39,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:30" (2/3) ... [2018-11-07 04:07:39,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@659f0a98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:07:39, skipping insertion in model container [2018-11-07 04:07:39,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:07:39" (3/3) ... [2018-11-07 04:07:39,018 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label41_true-unreach-call.c [2018-11-07 04:07:39,028 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 04:07:39,037 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 04:07:39,053 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 04:07:39,103 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 04:07:39,103 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 04:07:39,104 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 04:07:39,104 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 04:07:39,104 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 04:07:39,104 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 04:07:39,104 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 04:07:39,104 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 04:07:39,153 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 04:07:39,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-11-07 04:07:39,165 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:07:39,166 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 04:07:39,168 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:07:39,174 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:07:39,174 INFO L82 PathProgramCache]: Analyzing trace with hash 64960460, now seen corresponding path program 1 times [2018-11-07 04:07:39,176 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:07:39,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:07:39,228 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:07:39,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:07:39,228 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:07:39,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:07:39,687 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 04:07:39,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 04:07:39,819 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 04:07:39,819 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 04:07:39,820 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:07:39,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 04:07:39,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 04:07:39,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 04:07:39,845 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-07 04:07:46,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:07:46,549 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-07 04:07:46,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 04:07:46,553 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2018-11-07 04:07:46,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:07:46,584 INFO L225 Difference]: With dead ends: 2251 [2018-11-07 04:07:46,585 INFO L226 Difference]: Without dead ends: 1474 [2018-11-07 04:07:46,597 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 [2018-11-07 04:07:46,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-07 04:07:46,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-07 04:07:46,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-07 04:07:46,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2801 transitions. [2018-11-07 04:07:46,760 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2801 transitions. Word has length 72 [2018-11-07 04:07:46,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:07:46,761 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2801 transitions. [2018-11-07 04:07:46,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 04:07:46,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2801 transitions. [2018-11-07 04:07:46,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-11-07 04:07:46,771 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:07:46,771 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, 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] [2018-11-07 04:07:46,772 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:07:46,772 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:07:46,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1844075886, now seen corresponding path program 1 times [2018-11-07 04:07:46,773 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:07:46,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:07:46,774 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:07:46,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:07:46,775 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:07:46,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:07:47,111 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 04:07:47,112 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 04:07:47,112 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 04:07:47,112 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:07:47,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 04:07:47,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 04:07:47,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 04:07:47,115 INFO L87 Difference]: Start difference. First operand 1474 states and 2801 transitions. Second operand 6 states. [2018-11-07 04:07:55,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:07:55,643 INFO L93 Difference]: Finished difference Result 4422 states and 8490 transitions. [2018-11-07 04:07:55,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 04:07:55,650 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2018-11-07 04:07:55,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:07:55,680 INFO L225 Difference]: With dead ends: 4422 [2018-11-07 04:07:55,680 INFO L226 Difference]: Without dead ends: 2954 [2018-11-07 04:07:55,687 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 04:07:55,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2018-11-07 04:07:55,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2928. [2018-11-07 04:07:55,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2928 states. [2018-11-07 04:07:55,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 5031 transitions. [2018-11-07 04:07:55,819 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 5031 transitions. Word has length 146 [2018-11-07 04:07:55,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:07:55,821 INFO L480 AbstractCegarLoop]: Abstraction has 2928 states and 5031 transitions. [2018-11-07 04:07:55,821 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 04:07:55,821 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 5031 transitions. [2018-11-07 04:07:55,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-11-07 04:07:55,834 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:07:55,834 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, 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] [2018-11-07 04:07:55,835 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:07:55,835 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:07:55,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1891149621, now seen corresponding path program 1 times [2018-11-07 04:07:55,835 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:07:55,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:07:55,837 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:07:55,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:07:55,838 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:07:55,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:07:56,025 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 04:07:56,025 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 04:07:56,025 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 04:07:56,025 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:07:56,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 04:07:56,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 04:07:56,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 04:07:56,027 INFO L87 Difference]: Start difference. First operand 2928 states and 5031 transitions. Second operand 5 states. [2018-11-07 04:08:05,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:08:05,438 INFO L93 Difference]: Finished difference Result 10269 states and 17658 transitions. [2018-11-07 04:08:05,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 04:08:05,439 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2018-11-07 04:08:05,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:08:05,480 INFO L225 Difference]: With dead ends: 10269 [2018-11-07 04:08:05,481 INFO L226 Difference]: Without dead ends: 7347 [2018-11-07 04:08:05,498 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 04:08:05,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7347 states. [2018-11-07 04:08:05,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7347 to 7267. [2018-11-07 04:08:05,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7267 states. [2018-11-07 04:08:05,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7267 states to 7267 states and 10818 transitions. [2018-11-07 04:08:05,736 INFO L78 Accepts]: Start accepts. Automaton has 7267 states and 10818 transitions. Word has length 149 [2018-11-07 04:08:05,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:08:05,736 INFO L480 AbstractCegarLoop]: Abstraction has 7267 states and 10818 transitions. [2018-11-07 04:08:05,736 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 04:08:05,736 INFO L276 IsEmpty]: Start isEmpty. Operand 7267 states and 10818 transitions. [2018-11-07 04:08:05,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-11-07 04:08:05,743 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:08:05,743 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, 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] [2018-11-07 04:08:05,743 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:08:05,743 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:08:05,745 INFO L82 PathProgramCache]: Analyzing trace with hash -46107601, now seen corresponding path program 1 times [2018-11-07 04:08:05,745 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:08:05,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:08:05,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:08:05,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:08:05,746 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:08:05,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:08:06,034 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 04:08:06,035 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 04:08:06,035 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 04:08:06,035 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:08:06,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 04:08:06,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 04:08:06,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 04:08:06,037 INFO L87 Difference]: Start difference. First operand 7267 states and 10818 transitions. Second operand 4 states. [2018-11-07 04:08:12,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:08:12,392 INFO L93 Difference]: Finished difference Result 17419 states and 25893 transitions. [2018-11-07 04:08:12,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 04:08:12,393 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 179 [2018-11-07 04:08:12,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:08:12,440 INFO L225 Difference]: With dead ends: 17419 [2018-11-07 04:08:12,440 INFO L226 Difference]: Without dead ends: 10158 [2018-11-07 04:08:12,470 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 04:08:12,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10158 states. [2018-11-07 04:08:12,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10158 to 10148. [2018-11-07 04:08:12,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10148 states. [2018-11-07 04:08:12,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10148 states to 10148 states and 14089 transitions. [2018-11-07 04:08:12,689 INFO L78 Accepts]: Start accepts. Automaton has 10148 states and 14089 transitions. Word has length 179 [2018-11-07 04:08:12,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:08:12,691 INFO L480 AbstractCegarLoop]: Abstraction has 10148 states and 14089 transitions. [2018-11-07 04:08:12,691 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 04:08:12,691 INFO L276 IsEmpty]: Start isEmpty. Operand 10148 states and 14089 transitions. [2018-11-07 04:08:12,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-11-07 04:08:12,697 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:08:12,698 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, 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] [2018-11-07 04:08:12,698 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:08:12,698 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:08:12,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1174362365, now seen corresponding path program 1 times [2018-11-07 04:08:12,698 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:08:12,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:08:12,699 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:08:12,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:08:12,700 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:08:12,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:08:12,977 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 04:08:13,021 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 130 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 04:08:13,022 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:08:13,022 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 04:08:13,023 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 220 with the following transitions: [2018-11-07 04:08:13,025 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2055], [2063], [2071], [2079], [2087], [2095], [2099], [2101], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2144], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 04:08:13,103 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 04:08:13,103 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 04:08:14,436 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 04:08:14,933 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 04:08:14,935 INFO L272 AbstractInterpreter]: Visited 82 different actions 82 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 04:08:14,948 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:08:14,948 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 04:08:16,910 INFO L227 lantSequenceWeakener]: Weakened 211 states. On average, predicates are now at 78.53% of their original sizes. [2018-11-07 04:08:16,910 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 04:08:17,229 INFO L415 sIntCurrentIteration]: We unified 218 AI predicates to 218 [2018-11-07 04:08:17,229 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 04:08:17,230 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 04:08:17,230 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-11-07 04:08:17,230 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:08:17,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 04:08:17,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 04:08:17,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 04:08:17,232 INFO L87 Difference]: Start difference. First operand 10148 states and 14089 transitions. Second operand 7 states. [2018-11-07 04:09:25,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:09:25,421 INFO L93 Difference]: Finished difference Result 20995 states and 29010 transitions. [2018-11-07 04:09:25,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 04:09:25,421 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 219 [2018-11-07 04:09:25,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:09:25,458 INFO L225 Difference]: With dead ends: 20995 [2018-11-07 04:09:25,458 INFO L226 Difference]: Without dead ends: 10853 [2018-11-07 04:09:25,480 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 219 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 04:09:25,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10853 states. [2018-11-07 04:09:25,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10853 to 10851. [2018-11-07 04:09:25,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10851 states. [2018-11-07 04:09:25,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10851 states to 10851 states and 14801 transitions. [2018-11-07 04:09:25,712 INFO L78 Accepts]: Start accepts. Automaton has 10851 states and 14801 transitions. Word has length 219 [2018-11-07 04:09:25,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:09:25,712 INFO L480 AbstractCegarLoop]: Abstraction has 10851 states and 14801 transitions. [2018-11-07 04:09:25,712 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 04:09:25,713 INFO L276 IsEmpty]: Start isEmpty. Operand 10851 states and 14801 transitions. [2018-11-07 04:09:25,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-11-07 04:09:25,724 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:09:25,724 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 04:09:25,725 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:09:25,725 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:09:25,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1380574886, now seen corresponding path program 1 times [2018-11-07 04:09:25,726 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:09:25,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:09:25,727 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:09:25,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:09:25,727 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:09:25,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:09:26,226 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 04:09:26,431 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 04:09:26,656 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 04:09:27,050 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 254 proven. 153 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 04:09:27,050 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:09:27,050 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 04:09:27,051 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 407 with the following transitions: [2018-11-07 04:09:27,051 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2055], [2063], [2071], [2079], [2087], [2095], [2099], [2101], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2144], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 04:09:27,061 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 04:09:27,061 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 04:09:27,636 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 04:09:40,045 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 04:09:40,045 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 04:09:40,056 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:09:40,056 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 04:09:45,441 INFO L227 lantSequenceWeakener]: Weakened 150 states. On average, predicates are now at 78.82% of their original sizes. [2018-11-07 04:09:45,442 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 04:10:11,294 INFO L415 sIntCurrentIteration]: We unified 405 AI predicates to 405 [2018-11-07 04:10:11,294 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 04:10:11,295 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 04:10:11,295 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2018-11-07 04:10:11,295 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:10:11,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 04:10:11,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 04:10:11,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2018-11-07 04:10:11,297 INFO L87 Difference]: Start difference. First operand 10851 states and 14801 transitions. Second operand 16 states. Received shutdown request... [2018-11-07 04:11:18,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 04:11:18,783 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 04:11:18,788 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 04:11:18,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 04:11:18 BoogieIcfgContainer [2018-11-07 04:11:18,789 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 04:11:18,790 INFO L168 Benchmark]: Toolchain (without parser) took 230154.35 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -893.2 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-11-07 04:11:18,792 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 04:11:18,792 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1801.64 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-11-07 04:11:18,793 INFO L168 Benchmark]: Boogie Procedure Inliner took 272.20 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 773.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -964.7 MB). Peak memory consumption was 42.2 MB. Max. memory is 7.1 GB. [2018-11-07 04:11:18,794 INFO L168 Benchmark]: Boogie Preprocessor took 211.18 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-11-07 04:11:18,795 INFO L168 Benchmark]: RCFGBuilder took 8084.49 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 508.4 MB). Peak memory consumption was 508.4 MB. Max. memory is 7.1 GB. [2018-11-07 04:11:18,796 INFO L168 Benchmark]: TraceAbstraction took 219778.81 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 2.3 GB in the end (delta: -598.5 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-11-07 04:11:18,801 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 1801.64 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 272.20 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 773.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -964.7 MB). Peak memory consumption was 42.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 211.18 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8084.49 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 508.4 MB). Peak memory consumption was 508.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 219778.81 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 2.3 GB in the end (delta: -598.5 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 204]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 204). Cancelled while BasicCegarLoop was constructing difference of abstraction (10851states) and FLOYD_HOARE automaton (currently 9 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (173 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 219.6s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 166.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2311 SDtfs, 10000 SDslu, 723 SDs, 0 SdLazy, 18550 SolverSat, 4435 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 96.9s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 657 GetRequests, 580 SyntacticMatches, 37 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 26.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10851occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 14.9s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9960773024402727 AbsIntWeakeningRatio, 0.09309791332263243 AbsIntAvgWeakeningVarsNumRemoved, 328.9967897271268 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 5 MinimizatonAttempts, 118 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 1171 NumberOfCodeBlocks, 1171 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1165 ConstructedInterpolants, 0 QuantifiedInterpolants, 1441697 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 589/807 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown