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_label26_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:21:12,611 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:21:12,614 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:21:12,628 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:21:12,628 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:21:12,630 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:21:12,631 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:21:12,633 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:21:12,635 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:21:12,637 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:21:12,638 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:21:12,639 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:21:12,641 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:21:12,642 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:21:12,643 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:21:12,644 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:21:12,644 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:21:12,646 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:21:12,648 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:21:12,650 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:21:12,651 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:21:12,654 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:21:12,662 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 21:21:12,670 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 21:21:12,691 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:21:12,691 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:21:12,692 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:21:12,693 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:21:12,693 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:21:12,693 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:21:12,693 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:21:12,693 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:21:12,693 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:21:12,694 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:21:12,694 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:21:12,694 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:21:12,696 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:21:12,696 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:21:12,696 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:21:12,696 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:21:12,696 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:21:12,697 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:21:12,697 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:21:12,697 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:21:12,697 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:21:12,697 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:21:12,698 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:21:12,699 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:21:12,699 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:21:12,700 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:21:12,700 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:21:12,700 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:21:12,700 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:21:12,700 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:21:12,700 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:21:12,701 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:21:12,701 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:21:12,701 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:21:12,771 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:21:12,789 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:21:12,794 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:21:12,796 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:21:12,796 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:21:12,797 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label26_true-unreach-call.c [2018-10-24 21:21:12,851 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0d85ad808/7cf3a8401e534394bc0db6d0c567a08e/FLAG50b2ce627 [2018-10-24 21:21:13,556 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:21:13,558 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label26_true-unreach-call.c [2018-10-24 21:21:13,589 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0d85ad808/7cf3a8401e534394bc0db6d0c567a08e/FLAG50b2ce627 [2018-10-24 21:21:13,606 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0d85ad808/7cf3a8401e534394bc0db6d0c567a08e [2018-10-24 21:21:13,619 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:21:13,621 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:21:13,622 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:21:13,623 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:21:13,627 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:21:13,629 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:21:13" (1/1) ... [2018-10-24 21:21:13,632 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46764b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:21:13, skipping insertion in model container [2018-10-24 21:21:13,632 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:21:13" (1/1) ... [2018-10-24 21:21:13,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:21:13,808 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:21:15,076 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:21:15,081 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:21:15,674 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:21:15,708 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:21:15,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:21:15 WrapperNode [2018-10-24 21:21:15,709 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:21:15,710 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:21:15,711 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:21:15,711 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:21:15,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:21:15" (1/1) ... [2018-10-24 21:21:15,774 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:21:15" (1/1) ... [2018-10-24 21:21:16,213 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:21:16,213 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:21:16,214 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:21:16,214 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:21:16,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:21:15" (1/1) ... [2018-10-24 21:21:16,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:21:15" (1/1) ... [2018-10-24 21:21:16,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:21:15" (1/1) ... [2018-10-24 21:21:16,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:21:15" (1/1) ... [2018-10-24 21:21:16,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:21:15" (1/1) ... [2018-10-24 21:21:16,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:21:15" (1/1) ... [2018-10-24 21:21:16,453 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:21:15" (1/1) ... [2018-10-24 21:21:16,502 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:21:16,502 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:21:16,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:21:16,503 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:21:16,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:21:15" (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 21:21:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:21:16,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:21:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 21:21:16,577 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 21:21:16,577 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 21:21:16,577 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 21:21:16,577 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:21:16,578 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:21:16,578 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:21:16,578 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:21:16,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:21:16,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:21:16,579 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:21:16,580 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:21:29,895 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:21:29,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:21:29 BoogieIcfgContainer [2018-10-24 21:21:29,897 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:21:29,898 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:21:29,898 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:21:29,901 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:21:29,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:21:13" (1/3) ... [2018-10-24 21:21:29,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef33c60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:21:29, skipping insertion in model container [2018-10-24 21:21:29,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:21:15" (2/3) ... [2018-10-24 21:21:29,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef33c60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:21:29, skipping insertion in model container [2018-10-24 21:21:29,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:21:29" (3/3) ... [2018-10-24 21:21:29,905 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label26_true-unreach-call.c [2018-10-24 21:21:29,915 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:21:29,929 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:21:29,948 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:21:30,021 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:21:30,021 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:21:30,021 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:21:30,021 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:21:30,021 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:21:30,022 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:21:30,022 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:21:30,022 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:21:30,083 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-24 21:21:30,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-24 21:21:30,097 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:21:30,099 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] [2018-10-24 21:21:30,101 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:21:30,108 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:21:30,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1342118596, now seen corresponding path program 1 times [2018-10-24 21:21:30,112 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:21:30,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:21:30,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:21:30,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:21:30,178 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:21:30,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:21:30,744 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 21:21:30,746 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:21:30,747 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:21:30,747 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:21:30,754 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:21:30,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:21:30,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:21:30,776 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 4 states. [2018-10-24 21:21:44,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:21:44,845 INFO L93 Difference]: Finished difference Result 3234 states and 6255 transitions. [2018-10-24 21:21:44,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:21:44,850 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2018-10-24 21:21:44,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:21:44,903 INFO L225 Difference]: With dead ends: 3234 [2018-10-24 21:21:44,904 INFO L226 Difference]: Without dead ends: 2388 [2018-10-24 21:21:44,921 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:21:44,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2018-10-24 21:21:45,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 1604. [2018-10-24 21:21:45,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-10-24 21:21:45,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2600 transitions. [2018-10-24 21:21:45,125 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2600 transitions. Word has length 52 [2018-10-24 21:21:45,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:21:45,126 INFO L481 AbstractCegarLoop]: Abstraction has 1604 states and 2600 transitions. [2018-10-24 21:21:45,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:21:45,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2600 transitions. [2018-10-24 21:21:45,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-24 21:21:45,140 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:21:45,141 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:21:45,141 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:21:45,141 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:21:45,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1915502122, now seen corresponding path program 1 times [2018-10-24 21:21:45,142 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:21:45,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:21:45,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:21:45,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:21:45,144 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:21:45,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:21:45,485 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:21:45,485 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:21:45,485 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:21:45,486 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:21:45,488 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:21:45,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:21:45,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:21:45,488 INFO L87 Difference]: Start difference. First operand 1604 states and 2600 transitions. Second operand 5 states. [2018-10-24 21:22:01,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:22:01,253 INFO L93 Difference]: Finished difference Result 4873 states and 7923 transitions. [2018-10-24 21:22:01,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 21:22:01,263 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2018-10-24 21:22:01,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:22:01,288 INFO L225 Difference]: With dead ends: 4873 [2018-10-24 21:22:01,289 INFO L226 Difference]: Without dead ends: 3275 [2018-10-24 21:22:01,295 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:22:01,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3275 states. [2018-10-24 21:22:01,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3275 to 3241. [2018-10-24 21:22:01,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3241 states. [2018-10-24 21:22:01,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3241 states to 3241 states and 4816 transitions. [2018-10-24 21:22:01,407 INFO L78 Accepts]: Start accepts. Automaton has 3241 states and 4816 transitions. Word has length 132 [2018-10-24 21:22:01,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:22:01,407 INFO L481 AbstractCegarLoop]: Abstraction has 3241 states and 4816 transitions. [2018-10-24 21:22:01,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:22:01,408 INFO L276 IsEmpty]: Start isEmpty. Operand 3241 states and 4816 transitions. [2018-10-24 21:22:01,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-10-24 21:22:01,412 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:22:01,412 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:22:01,413 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:22:01,413 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:22:01,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1363927151, now seen corresponding path program 1 times [2018-10-24 21:22:01,413 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:22:01,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:22:01,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:22:01,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:22:01,415 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:22:01,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:22:01,642 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:22:01,642 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:22:01,643 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:22:01,643 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:22:01,644 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:22:01,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:22:01,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:22:01,645 INFO L87 Difference]: Start difference. First operand 3241 states and 4816 transitions. Second operand 6 states. [2018-10-24 21:22:09,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:22:09,871 INFO L93 Difference]: Finished difference Result 9802 states and 14868 transitions. [2018-10-24 21:22:09,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:22:09,874 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 161 [2018-10-24 21:22:09,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:22:09,911 INFO L225 Difference]: With dead ends: 9802 [2018-10-24 21:22:09,911 INFO L226 Difference]: Without dead ends: 6567 [2018-10-24 21:22:09,919 INFO L605 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 [2018-10-24 21:22:09,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6567 states. [2018-10-24 21:22:10,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6567 to 6493. [2018-10-24 21:22:10,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6493 states. [2018-10-24 21:22:10,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6493 states to 6493 states and 9457 transitions. [2018-10-24 21:22:10,083 INFO L78 Accepts]: Start accepts. Automaton has 6493 states and 9457 transitions. Word has length 161 [2018-10-24 21:22:10,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:22:10,084 INFO L481 AbstractCegarLoop]: Abstraction has 6493 states and 9457 transitions. [2018-10-24 21:22:10,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:22:10,084 INFO L276 IsEmpty]: Start isEmpty. Operand 6493 states and 9457 transitions. [2018-10-24 21:22:10,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-10-24 21:22:10,087 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:22:10,088 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:22:10,088 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:22:10,088 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:22:10,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1064317105, now seen corresponding path program 1 times [2018-10-24 21:22:10,089 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:22:10,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:22:10,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:22:10,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:22:10,090 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:22:10,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:22:10,360 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:22:10,772 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:22:10,772 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:22:10,772 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:22:10,773 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:22:10,773 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:22:10,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:22:10,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:22:10,774 INFO L87 Difference]: Start difference. First operand 6493 states and 9457 transitions. Second operand 6 states. [2018-10-24 21:22:23,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:22:23,118 INFO L93 Difference]: Finished difference Result 21850 states and 33059 transitions. [2018-10-24 21:22:23,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:22:23,118 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 177 [2018-10-24 21:22:23,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:22:23,202 INFO L225 Difference]: With dead ends: 21850 [2018-10-24 21:22:23,202 INFO L226 Difference]: Without dead ends: 15363 [2018-10-24 21:22:23,234 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 21:22:23,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15363 states. [2018-10-24 21:22:23,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15363 to 15280. [2018-10-24 21:22:23,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15280 states. [2018-10-24 21:22:23,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15280 states to 15280 states and 21374 transitions. [2018-10-24 21:22:23,673 INFO L78 Accepts]: Start accepts. Automaton has 15280 states and 21374 transitions. Word has length 177 [2018-10-24 21:22:23,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:22:23,674 INFO L481 AbstractCegarLoop]: Abstraction has 15280 states and 21374 transitions. [2018-10-24 21:22:23,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:22:23,674 INFO L276 IsEmpty]: Start isEmpty. Operand 15280 states and 21374 transitions. [2018-10-24 21:22:23,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-24 21:22:23,680 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:22:23,680 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:22:23,680 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:22:23,681 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:22:23,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1136410638, now seen corresponding path program 1 times [2018-10-24 21:22:23,681 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:22:23,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:22:23,682 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:22:23,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:22:23,682 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:22:23,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:22:24,022 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:22:24,254 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-24 21:22:24,255 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:22:24,255 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:22:24,257 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 199 with the following transitions: [2018-10-24 21:22:24,261 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], [2147], [2155], [2163], [2171], [2179], [2183], [2185], [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], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2664], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-24 21:22:24,376 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:22:24,376 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:22:28,832 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:22:51,144 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:22:51,145 INFO L272 AbstractInterpreter]: Visited 153 different actions 446 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 21:22:51,172 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:22:51,172 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:22:54,880 INFO L232 lantSequenceWeakener]: Weakened 196 states. On average, predicates are now at 75.77% of their original sizes. [2018-10-24 21:22:54,881 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:22:56,617 INFO L413 sIntCurrentIteration]: We have 197 unified AI predicates [2018-10-24 21:22:56,617 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:22:56,618 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:22:56,618 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [4] total 15 [2018-10-24 21:22:56,618 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:22:56,619 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-24 21:22:56,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-24 21:22:56,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-10-24 21:22:56,620 INFO L87 Difference]: Start difference. First operand 15280 states and 21374 transitions. Second operand 13 states. Received shutdown request... [2018-10-24 21:24:52,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-24 21:24:52,772 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:24:52,777 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:24:52,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:24:52 BoogieIcfgContainer [2018-10-24 21:24:52,777 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:24:52,778 INFO L168 Benchmark]: Toolchain (without parser) took 219158.50 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 2.0 GB in the end (delta: -561.4 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-24 21:24:52,780 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-10-24 21:24:52,780 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2087.58 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 21:24:52,781 INFO L168 Benchmark]: Boogie Procedure Inliner took 502.67 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 805.3 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. [2018-10-24 21:24:52,782 INFO L168 Benchmark]: Boogie Preprocessor took 288.49 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 36.0 MB). Peak memory consumption was 36.0 MB. Max. memory is 7.1 GB. [2018-10-24 21:24:52,783 INFO L168 Benchmark]: RCFGBuilder took 13394.52 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 168.8 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -168.5 MB). Peak memory consumption was 665.5 MB. Max. memory is 7.1 GB. [2018-10-24 21:24:52,784 INFO L168 Benchmark]: TraceAbstraction took 202879.88 ms. Allocated memory was 2.5 GB in the beginning and 4.1 GB in the end (delta: 1.6 GB). Free memory was 2.4 GB in the beginning and 2.0 GB in the end (delta: 417.1 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-24 21:24:52,790 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 2087.58 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 502.67 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 805.3 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 288.49 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 36.0 MB). Peak memory consumption was 36.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13394.52 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 168.8 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -168.5 MB). Peak memory consumption was 665.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 202879.88 ms. Allocated memory was 2.5 GB in the beginning and 4.1 GB in the end (delta: 1.6 GB). Free memory was 2.4 GB in the beginning and 2.0 GB in the end (delta: 417.1 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 147]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 147). Cancelled while BasicCegarLoop was constructing difference of abstraction (15280states) and FLOYD_HOARE automaton (currently 16 states, 13 states before enhancement),while ReachableStatesComputation was computing reachable states (9148 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 202.7s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 166.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1298 SDtfs, 13390 SDslu, 1366 SDs, 0 SdLazy, 24696 SolverSat, 4916 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 110.9s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 242 GetRequests, 192 SyntacticMatches, 7 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15280occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 26.9s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.995478328777821 AbsIntWeakeningRatio, 0.1065989847715736 AbsIntAvgWeakeningVarsNumRemoved, 19.624365482233504 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 4 MinimizatonAttempts, 975 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 720 NumberOfCodeBlocks, 720 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 715 ConstructedInterpolants, 0 QuantifiedInterpolants, 449069 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 139/180 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown