java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label17_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 01:15:33,612 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 01:15:33,614 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 01:15:33,627 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 01:15:33,627 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 01:15:33,628 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 01:15:33,630 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 01:15:33,632 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 01:15:33,633 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 01:15:33,634 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 01:15:33,635 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 01:15:33,635 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 01:15:33,636 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 01:15:33,637 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 01:15:33,639 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 01:15:33,639 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 01:15:33,640 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 01:15:33,642 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 01:15:33,644 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 01:15:33,646 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 01:15:33,647 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 01:15:33,649 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 01:15:33,651 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 01:15:33,658 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 01:15:33,658 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 01:15:33,659 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 01:15:33,662 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 01:15:33,662 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 01:15:33,691 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 01:15:33,692 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 01:15:33,693 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 01:15:33,693 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 01:15:33,693 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 01:15:33,693 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 01:15:33,694 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 01:15:33,694 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 01:15:33,694 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 01:15:33,695 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 01:15:33,695 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 01:15:33,695 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 01:15:33,696 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 01:15:33,696 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 01:15:33,696 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 01:15:33,697 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 01:15:33,697 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 01:15:33,697 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 01:15:33,697 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 01:15:33,697 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 01:15:33,699 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 01:15:33,699 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 01:15:33,699 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 01:15:33,699 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 01:15:33,699 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 01:15:33,700 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 01:15:33,700 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 01:15:33,700 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 01:15:33,700 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 01:15:33,700 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 01:15:33,701 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 01:15:33,701 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 01:15:33,701 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 01:15:33,702 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 01:15:33,778 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 01:15:33,798 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 01:15:33,802 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 01:15:33,804 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 01:15:33,804 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 01:15:33,805 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label17_true-unreach-call.c [2018-10-24 01:15:33,880 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9c9d5d7ad/9925c7ccdf704f648a2b4bacffc8bb08/FLAG7b33b1a9b [2018-10-24 01:15:34,695 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 01:15:34,696 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label17_true-unreach-call.c [2018-10-24 01:15:34,730 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9c9d5d7ad/9925c7ccdf704f648a2b4bacffc8bb08/FLAG7b33b1a9b [2018-10-24 01:15:34,751 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9c9d5d7ad/9925c7ccdf704f648a2b4bacffc8bb08 [2018-10-24 01:15:34,763 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 01:15:34,765 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 01:15:34,766 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 01:15:34,767 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 01:15:34,773 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 01:15:34,774 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:15:34" (1/1) ... [2018-10-24 01:15:34,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bac9fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:15:34, skipping insertion in model container [2018-10-24 01:15:34,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:15:34" (1/1) ... [2018-10-24 01:15:34,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 01:15:34,974 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 01:15:36,448 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:15:36,458 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 01:15:37,083 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:15:37,117 INFO L193 MainTranslator]: Completed translation [2018-10-24 01:15:37,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:15:37 WrapperNode [2018-10-24 01:15:37,118 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 01:15:37,119 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 01:15:37,120 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 01:15:37,120 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 01:15:37,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:15:37" (1/1) ... [2018-10-24 01:15:37,193 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:15:37" (1/1) ... [2018-10-24 01:15:37,656 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 01:15:37,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 01:15:37,657 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 01:15:37,657 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 01:15:37,668 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:15:37" (1/1) ... [2018-10-24 01:15:37,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:15:37" (1/1) ... [2018-10-24 01:15:37,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:15:37" (1/1) ... [2018-10-24 01:15:37,711 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:15:37" (1/1) ... [2018-10-24 01:15:37,834 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:15:37" (1/1) ... [2018-10-24 01:15:37,889 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:15:37" (1/1) ... [2018-10-24 01:15:37,926 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:15:37" (1/1) ... [2018-10-24 01:15:37,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 01:15:37,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 01:15:37,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 01:15:37,965 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 01:15:37,967 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:15:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 01:15:38,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 01:15:38,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 01:15:38,038 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 01:15:38,039 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 01:15:38,039 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 01:15:38,039 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 01:15:38,039 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 01:15:38,039 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 01:15:38,040 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 01:15:38,040 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 01:15:38,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 01:15:38,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 01:15:38,041 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 01:15:38,043 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 01:15:49,178 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 01:15:49,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:15:49 BoogieIcfgContainer [2018-10-24 01:15:49,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 01:15:49,180 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 01:15:49,180 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 01:15:49,183 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 01:15:49,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:15:34" (1/3) ... [2018-10-24 01:15:49,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3007d207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:15:49, skipping insertion in model container [2018-10-24 01:15:49,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:15:37" (2/3) ... [2018-10-24 01:15:49,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3007d207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:15:49, skipping insertion in model container [2018-10-24 01:15:49,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:15:49" (3/3) ... [2018-10-24 01:15:49,187 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label17_true-unreach-call.c [2018-10-24 01:15:49,197 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 01:15:49,208 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 01:15:49,227 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 01:15:49,281 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 01:15:49,282 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 01:15:49,282 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 01:15:49,282 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 01:15:49,282 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 01:15:49,282 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 01:15:49,283 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 01:15:49,283 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 01:15:49,336 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-24 01:15:49,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-24 01:15:49,346 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:15:49,347 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] [2018-10-24 01:15:49,350 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:15:49,357 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:15:49,357 INFO L82 PathProgramCache]: Analyzing trace with hash -832809957, now seen corresponding path program 1 times [2018-10-24 01:15:49,359 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:15:49,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:15:49,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:15:49,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:15:49,415 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:15:49,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:15:49,919 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:15:50,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:15:50,069 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:15:50,070 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 01:15:50,070 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:15:50,076 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 01:15:50,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 01:15:50,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 01:15:50,096 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-10-24 01:15:58,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:15:58,036 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-10-24 01:15:58,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 01:15:58,039 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2018-10-24 01:15:58,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:15:58,078 INFO L225 Difference]: With dead ends: 2446 [2018-10-24 01:15:58,078 INFO L226 Difference]: Without dead ends: 1604 [2018-10-24 01:15:58,098 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 01:15:58,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-10-24 01:15:58,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-10-24 01:15:58,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-10-24 01:15:58,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2909 transitions. [2018-10-24 01:15:58,259 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2909 transitions. Word has length 47 [2018-10-24 01:15:58,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:15:58,260 INFO L481 AbstractCegarLoop]: Abstraction has 1604 states and 2909 transitions. [2018-10-24 01:15:58,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 01:15:58,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2909 transitions. [2018-10-24 01:15:58,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-24 01:15:58,267 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:15:58,267 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:15:58,268 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:15:58,268 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:15:58,268 INFO L82 PathProgramCache]: Analyzing trace with hash -342093644, now seen corresponding path program 1 times [2018-10-24 01:15:58,268 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:15:58,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:15:58,270 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:15:58,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:15:58,270 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:15:58,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:15:58,672 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:15:58,925 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:15:58,925 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:15:58,926 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 01:15:58,926 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:15:58,930 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 01:15:58,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 01:15:58,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 01:15:58,932 INFO L87 Difference]: Start difference. First operand 1604 states and 2909 transitions. Second operand 5 states. [2018-10-24 01:16:14,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:16:14,345 INFO L93 Difference]: Finished difference Result 4818 states and 8826 transitions. [2018-10-24 01:16:14,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:16:14,345 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2018-10-24 01:16:14,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:16:14,371 INFO L225 Difference]: With dead ends: 4818 [2018-10-24 01:16:14,371 INFO L226 Difference]: Without dead ends: 3220 [2018-10-24 01:16:14,378 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 01:16:14,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2018-10-24 01:16:14,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 3186. [2018-10-24 01:16:14,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3186 states. [2018-10-24 01:16:14,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 5594 transitions. [2018-10-24 01:16:14,508 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 5594 transitions. Word has length 121 [2018-10-24 01:16:14,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:16:14,508 INFO L481 AbstractCegarLoop]: Abstraction has 3186 states and 5594 transitions. [2018-10-24 01:16:14,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 01:16:14,509 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 5594 transitions. [2018-10-24 01:16:14,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-24 01:16:14,513 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:16:14,513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:16:14,514 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:16:14,514 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:16:14,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1410131373, now seen corresponding path program 1 times [2018-10-24 01:16:14,514 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:16:14,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:16:14,516 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:16:14,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:16:14,516 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:16:14,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:16:14,803 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:16:15,208 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:16:15,208 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:16:15,209 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:16:15,209 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:16:15,209 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:16:15,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:16:15,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:16:15,210 INFO L87 Difference]: Start difference. First operand 3186 states and 5594 transitions. Second operand 6 states. [2018-10-24 01:16:31,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:16:31,626 INFO L93 Difference]: Finished difference Result 11148 states and 19850 transitions. [2018-10-24 01:16:31,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:16:31,626 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2018-10-24 01:16:31,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:16:31,677 INFO L225 Difference]: With dead ends: 11148 [2018-10-24 01:16:31,677 INFO L226 Difference]: Without dead ends: 7968 [2018-10-24 01:16:31,694 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 01:16:31,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7968 states. [2018-10-24 01:16:31,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7968 to 7924. [2018-10-24 01:16:31,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7924 states. [2018-10-24 01:16:31,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7924 states to 7924 states and 13424 transitions. [2018-10-24 01:16:31,918 INFO L78 Accepts]: Start accepts. Automaton has 7924 states and 13424 transitions. Word has length 126 [2018-10-24 01:16:31,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:16:31,919 INFO L481 AbstractCegarLoop]: Abstraction has 7924 states and 13424 transitions. [2018-10-24 01:16:31,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:16:31,919 INFO L276 IsEmpty]: Start isEmpty. Operand 7924 states and 13424 transitions. [2018-10-24 01:16:31,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-24 01:16:31,923 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:16:31,924 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:16:31,924 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:16:31,924 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:16:31,925 INFO L82 PathProgramCache]: Analyzing trace with hash 750688061, now seen corresponding path program 1 times [2018-10-24 01:16:31,925 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:16:31,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:16:31,926 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:16:31,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:16:31,926 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:16:31,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:16:32,193 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:16:32,328 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:16:32,329 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:16:32,329 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:16:32,329 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:16:32,330 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:16:32,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:16:32,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:16:32,330 INFO L87 Difference]: Start difference. First operand 7924 states and 13424 transitions. Second operand 6 states. [2018-10-24 01:16:44,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:16:44,496 INFO L93 Difference]: Finished difference Result 23002 states and 39427 transitions. [2018-10-24 01:16:44,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:16:44,497 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2018-10-24 01:16:44,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:16:44,574 INFO L225 Difference]: With dead ends: 23002 [2018-10-24 01:16:44,574 INFO L226 Difference]: Without dead ends: 15084 [2018-10-24 01:16:44,616 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 01:16:44,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15084 states. [2018-10-24 01:16:44,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15084 to 14997. [2018-10-24 01:16:44,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14997 states. [2018-10-24 01:16:45,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14997 states to 14997 states and 22946 transitions. [2018-10-24 01:16:45,001 INFO L78 Accepts]: Start accepts. Automaton has 14997 states and 22946 transitions. Word has length 134 [2018-10-24 01:16:45,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:16:45,002 INFO L481 AbstractCegarLoop]: Abstraction has 14997 states and 22946 transitions. [2018-10-24 01:16:45,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:16:45,002 INFO L276 IsEmpty]: Start isEmpty. Operand 14997 states and 22946 transitions. [2018-10-24 01:16:45,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-10-24 01:16:45,010 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:16:45,010 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:16:45,011 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:16:45,011 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:16:45,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1560155152, now seen corresponding path program 1 times [2018-10-24 01:16:45,011 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:16:45,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:16:45,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:16:45,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:16:45,013 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:16:45,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:16:45,334 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:16:45,700 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:16:45,700 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:16:45,701 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:16:45,701 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:16:45,701 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:16:45,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:16:45,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:16:45,702 INFO L87 Difference]: Start difference. First operand 14997 states and 22946 transitions. Second operand 6 states. [2018-10-24 01:17:00,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:17:00,140 INFO L93 Difference]: Finished difference Result 37542 states and 59024 transitions. [2018-10-24 01:17:00,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:17:00,142 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 167 [2018-10-24 01:17:00,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:17:00,230 INFO L225 Difference]: With dead ends: 37542 [2018-10-24 01:17:00,230 INFO L226 Difference]: Without dead ends: 22551 [2018-10-24 01:17:00,284 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 01:17:00,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22551 states. [2018-10-24 01:17:00,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22551 to 22441. [2018-10-24 01:17:00,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22441 states. [2018-10-24 01:17:00,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22441 states to 22441 states and 31468 transitions. [2018-10-24 01:17:00,837 INFO L78 Accepts]: Start accepts. Automaton has 22441 states and 31468 transitions. Word has length 167 [2018-10-24 01:17:00,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:17:00,838 INFO L481 AbstractCegarLoop]: Abstraction has 22441 states and 31468 transitions. [2018-10-24 01:17:00,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:17:00,838 INFO L276 IsEmpty]: Start isEmpty. Operand 22441 states and 31468 transitions. [2018-10-24 01:17:00,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-24 01:17:00,849 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:17:00,849 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 01:17:00,849 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:17:00,850 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:17:00,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1155888016, now seen corresponding path program 1 times [2018-10-24 01:17:00,850 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:17:00,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:17:00,851 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:17:00,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:17:00,851 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:17:00,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:17:01,489 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 83 proven. 67 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 01:17:01,490 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:17:01,490 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:17:01,491 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 219 with the following transitions: [2018-10-24 01:17:01,493 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2143], [2145], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2384], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2460], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-24 01:17:01,561 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:17:01,561 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:17:08,749 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:17:08,751 INFO L272 AbstractInterpreter]: Visited 103 different actions 199 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 01:17:08,794 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:17:08,794 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:17:12,919 INFO L232 lantSequenceWeakener]: Weakened 119 states. On average, predicates are now at 76.37% of their original sizes. [2018-10-24 01:17:12,919 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:17:29,347 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:17:29,348 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:17:29,348 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [6] total 27 [2018-10-24 01:17:29,348 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:17:29,349 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-24 01:17:29,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-24 01:17:29,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2018-10-24 01:17:29,350 INFO L87 Difference]: Start difference. First operand 22441 states and 31468 transitions. Second operand 23 states. [2018-10-24 01:18:19,494 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 01:19:12,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-24 01:19:12,861 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 01:19:12,868 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 01:19:12,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:19:12 BoogieIcfgContainer [2018-10-24 01:19:12,868 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 01:19:12,869 INFO L168 Benchmark]: Toolchain (without parser) took 218105.55 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.3 GB in the end (delta: -1.9 GB). Peak memory consumption was 770.6 MB. Max. memory is 7.1 GB. [2018-10-24 01:19:12,872 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 01:19:12,873 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2352.38 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-24 01:19:12,874 INFO L168 Benchmark]: Boogie Procedure Inliner took 536.81 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 768.1 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 58.2 MB. Max. memory is 7.1 GB. [2018-10-24 01:19:12,875 INFO L168 Benchmark]: Boogie Preprocessor took 307.85 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: 36.8 MB). Peak memory consumption was 36.8 MB. Max. memory is 7.1 GB. [2018-10-24 01:19:12,876 INFO L168 Benchmark]: RCFGBuilder took 11213.86 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 197.1 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -213.4 MB). Peak memory consumption was 681.9 MB. Max. memory is 7.1 GB. [2018-10-24 01:19:12,878 INFO L168 Benchmark]: TraceAbstraction took 203688.79 ms. Allocated memory was 2.5 GB in the beginning and 4.1 GB in the end (delta: 1.7 GB). Free memory was 2.4 GB in the beginning and 3.3 GB in the end (delta: -893.5 MB). Peak memory consumption was 790.0 MB. Max. memory is 7.1 GB. [2018-10-24 01:19:12,888 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2352.38 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 536.81 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 768.1 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 58.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 307.85 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: 36.8 MB). Peak memory consumption was 36.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11213.86 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 197.1 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -213.4 MB). Peak memory consumption was 681.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 203688.79 ms. Allocated memory was 2.5 GB in the beginning and 4.1 GB in the end (delta: 1.7 GB). Free memory was 2.4 GB in the beginning and 3.3 GB in the end (delta: -893.5 MB). Peak memory consumption was 790.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 132). Cancelled while BasicCegarLoop was constructing difference of abstraction (22441states) and FLOYD_HOARE automaton (currently 17 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (1155 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 203.5s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 170.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 770 SDtfs, 15955 SDslu, 661 SDs, 0 SdLazy, 27626 SolverSat, 6756 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 97.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 268 GetRequests, 203 SyntacticMatches, 9 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 21.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22441occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 7.3s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9948103509393831 AbsIntWeakeningRatio, 0.12442396313364056 AbsIntAvgWeakeningVarsNumRemoved, 485.6175115207373 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 275 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 813 NumberOfCodeBlocks, 813 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 807 ConstructedInterpolants, 0 QuantifiedInterpolants, 578305 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 249/316 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown