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_label52_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:21:11,727 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:21:11,730 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:21:11,743 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:21:11,743 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:21:11,744 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:21:11,746 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:21:11,748 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:21:11,749 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:21:11,750 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:21:11,751 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:21:11,752 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:21:11,753 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:21:11,754 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:21:11,755 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:21:11,756 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:21:11,757 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:21:11,762 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:21:11,767 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:21:11,771 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:21:11,773 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:21:11,774 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:21:11,779 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 18:21:11,789 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 18:21:11,790 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 18:21:11,793 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 18:21:11,794 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 18:21:11,794 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 18:21:11,822 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:21:11,822 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:21:11,823 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:21:11,823 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:21:11,824 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:21:11,824 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:21:11,824 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:21:11,824 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:21:11,824 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:21:11,825 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:21:11,825 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:21:11,825 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:21:11,826 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:21:11,826 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:21:11,826 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:21:11,826 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:21:11,827 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:21:11,827 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:21:11,827 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:21:11,827 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:21:11,827 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:21:11,827 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:21:11,828 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:21:11,828 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:21:11,828 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:21:11,828 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:21:11,828 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:21:11,829 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:21:11,829 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:21:11,829 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:21:11,829 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:21:11,829 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:21:11,830 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:21:11,830 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:21:11,880 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:21:11,898 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:21:11,903 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:21:11,906 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:21:11,907 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:21:11,908 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label52_false-unreach-call.c [2018-10-24 18:21:11,983 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0cb5051bd/c250181701c9494185707069408b8740/FLAG913b51de7 [2018-10-24 18:21:12,840 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:21:12,841 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label52_false-unreach-call.c [2018-10-24 18:21:12,873 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0cb5051bd/c250181701c9494185707069408b8740/FLAG913b51de7 [2018-10-24 18:21:12,892 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0cb5051bd/c250181701c9494185707069408b8740 [2018-10-24 18:21:12,907 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:21:12,909 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:21:12,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:21:12,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:21:12,917 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:21:12,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:21:12" (1/1) ... [2018-10-24 18:21:12,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41d3a67d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:21:12, skipping insertion in model container [2018-10-24 18:21:12,924 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:21:12" (1/1) ... [2018-10-24 18:21:12,935 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:21:13,111 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:21:14,461 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:21:14,467 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:21:15,107 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:21:15,141 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:21:15,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:21:15 WrapperNode [2018-10-24 18:21:15,141 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:21:15,142 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:21:15,142 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:21:15,143 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:21:15,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:21:15" (1/1) ... [2018-10-24 18:21:15,216 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:21:15" (1/1) ... [2018-10-24 18:21:15,612 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:21:15,612 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:21:15,613 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:21:15,613 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:21:15,625 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:21:15" (1/1) ... [2018-10-24 18:21:15,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:21:15" (1/1) ... [2018-10-24 18:21:15,655 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:21:15" (1/1) ... [2018-10-24 18:21:15,657 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:21:15" (1/1) ... [2018-10-24 18:21:15,797 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:21:15" (1/1) ... [2018-10-24 18:21:15,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:21:15" (1/1) ... [2018-10-24 18:21:15,892 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:21:15" (1/1) ... [2018-10-24 18:21:15,929 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:21:15,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:21:15,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:21:15,931 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:21:15,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:21:15" (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 18:21:16,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:21:16,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:21:16,011 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 18:21:16,012 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 18:21:16,012 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 18:21:16,012 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 18:21:16,012 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 18:21:16,012 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 18:21:16,013 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:21:16,013 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:21:16,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:21:16,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:21:16,014 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:21:16,015 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:21:28,557 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:21:28,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:21:28 BoogieIcfgContainer [2018-10-24 18:21:28,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:21:28,559 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:21:28,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:21:28,563 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:21:28,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:21:12" (1/3) ... [2018-10-24 18:21:28,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a6629a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:21:28, skipping insertion in model container [2018-10-24 18:21:28,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:21:15" (2/3) ... [2018-10-24 18:21:28,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a6629a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:21:28, skipping insertion in model container [2018-10-24 18:21:28,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:21:28" (3/3) ... [2018-10-24 18:21:28,567 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label52_false-unreach-call.c [2018-10-24 18:21:28,577 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:21:28,587 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:21:28,605 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:21:28,650 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:21:28,650 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:21:28,651 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:21:28,651 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:21:28,651 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:21:28,651 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:21:28,651 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:21:28,651 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:21:28,689 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-24 18:21:28,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-24 18:21:28,698 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:21:28,699 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] [2018-10-24 18:21:28,701 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:21:28,708 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:21:28,708 INFO L82 PathProgramCache]: Analyzing trace with hash -785798829, now seen corresponding path program 1 times [2018-10-24 18:21:28,711 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:21:28,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:21:28,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:21:28,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:21:28,765 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:21:28,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:21:29,143 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:21:29,260 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 18:21:29,263 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:21:29,264 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:21:29,264 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:21:29,270 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:21:29,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:21:29,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:21:29,290 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-10-24 18:21:38,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:21:38,665 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-10-24 18:21:38,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:21:38,668 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2018-10-24 18:21:38,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:21:38,714 INFO L225 Difference]: With dead ends: 2446 [2018-10-24 18:21:38,714 INFO L226 Difference]: Without dead ends: 1604 [2018-10-24 18:21:38,733 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:21:38,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-10-24 18:21:38,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-10-24 18:21:38,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-10-24 18:21:38,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2909 transitions. [2018-10-24 18:21:38,919 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2909 transitions. Word has length 37 [2018-10-24 18:21:38,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:21:38,920 INFO L481 AbstractCegarLoop]: Abstraction has 1604 states and 2909 transitions. [2018-10-24 18:21:38,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:21:38,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2909 transitions. [2018-10-24 18:21:38,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-24 18:21:38,931 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:21:38,931 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:21:38,934 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:21:38,934 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:21:38,935 INFO L82 PathProgramCache]: Analyzing trace with hash -433018420, now seen corresponding path program 1 times [2018-10-24 18:21:38,935 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:21:38,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:21:38,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:21:38,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:21:38,938 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:21:39,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:21:39,319 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:21:39,319 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:21:39,319 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 18:21:39,320 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:21:39,322 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 18:21:39,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 18:21:39,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 18:21:39,323 INFO L87 Difference]: Start difference. First operand 1604 states and 2909 transitions. Second operand 5 states. [2018-10-24 18:21:43,156 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-10-24 18:21:50,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:21:50,655 INFO L93 Difference]: Finished difference Result 4818 states and 8826 transitions. [2018-10-24 18:21:50,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:21:50,656 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2018-10-24 18:21:50,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:21:50,679 INFO L225 Difference]: With dead ends: 4818 [2018-10-24 18:21:50,679 INFO L226 Difference]: Without dead ends: 3220 [2018-10-24 18:21:50,685 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:21:50,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2018-10-24 18:21:50,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 3186. [2018-10-24 18:21:50,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3186 states. [2018-10-24 18:21:50,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 5594 transitions. [2018-10-24 18:21:50,784 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 5594 transitions. Word has length 111 [2018-10-24 18:21:50,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:21:50,785 INFO L481 AbstractCegarLoop]: Abstraction has 3186 states and 5594 transitions. [2018-10-24 18:21:50,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 18:21:50,785 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 5594 transitions. [2018-10-24 18:21:50,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-24 18:21:50,788 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:21:50,788 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:21:50,789 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:21:50,789 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:21:50,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1430780731, now seen corresponding path program 1 times [2018-10-24 18:21:50,789 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:21:50,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:21:50,791 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:21:50,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:21:50,791 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:21:50,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:21:51,032 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:21:51,032 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:21:51,032 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:21:51,032 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:21:51,033 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:21:51,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:21:51,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:21:51,034 INFO L87 Difference]: Start difference. First operand 3186 states and 5594 transitions. Second operand 6 states. [2018-10-24 18:22:07,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:22:07,725 INFO L93 Difference]: Finished difference Result 11148 states and 19850 transitions. [2018-10-24 18:22:07,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:22:07,725 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2018-10-24 18:22:07,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:22:07,774 INFO L225 Difference]: With dead ends: 11148 [2018-10-24 18:22:07,775 INFO L226 Difference]: Without dead ends: 7968 [2018-10-24 18:22:07,791 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 18:22:07,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7968 states. [2018-10-24 18:22:07,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7968 to 7924. [2018-10-24 18:22:07,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7924 states. [2018-10-24 18:22:07,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7924 states to 7924 states and 13426 transitions. [2018-10-24 18:22:07,994 INFO L78 Accepts]: Start accepts. Automaton has 7924 states and 13426 transitions. Word has length 116 [2018-10-24 18:22:07,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:22:07,995 INFO L481 AbstractCegarLoop]: Abstraction has 7924 states and 13426 transitions. [2018-10-24 18:22:07,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:22:07,996 INFO L276 IsEmpty]: Start isEmpty. Operand 7924 states and 13426 transitions. [2018-10-24 18:22:07,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-24 18:22:07,999 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:22:07,999 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:22:07,999 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:22:07,999 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:22:08,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1344146005, now seen corresponding path program 1 times [2018-10-24 18:22:08,000 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:22:08,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:22:08,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:22:08,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:22:08,001 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:22:08,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:22:08,289 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:22:08,439 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:22:08,440 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:22:08,440 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:22:08,440 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:22:08,441 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:22:08,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:22:08,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:22:08,442 INFO L87 Difference]: Start difference. First operand 7924 states and 13426 transitions. Second operand 6 states. [2018-10-24 18:22:18,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:22:18,386 INFO L93 Difference]: Finished difference Result 22224 states and 38010 transitions. [2018-10-24 18:22:18,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:22:18,387 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2018-10-24 18:22:18,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:22:18,478 INFO L225 Difference]: With dead ends: 22224 [2018-10-24 18:22:18,478 INFO L226 Difference]: Without dead ends: 14306 [2018-10-24 18:22:18,517 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:22:18,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14306 states. [2018-10-24 18:22:18,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14306 to 14219. [2018-10-24 18:22:18,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14219 states. [2018-10-24 18:22:18,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14219 states to 14219 states and 21552 transitions. [2018-10-24 18:22:18,863 INFO L78 Accepts]: Start accepts. Automaton has 14219 states and 21552 transitions. Word has length 124 [2018-10-24 18:22:18,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:22:18,863 INFO L481 AbstractCegarLoop]: Abstraction has 14219 states and 21552 transitions. [2018-10-24 18:22:18,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:22:18,865 INFO L276 IsEmpty]: Start isEmpty. Operand 14219 states and 21552 transitions. [2018-10-24 18:22:18,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-24 18:22:18,868 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:22:18,868 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:22:18,869 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:22:18,870 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:22:18,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1223245544, now seen corresponding path program 1 times [2018-10-24 18:22:18,870 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:22:18,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:22:18,871 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:22:18,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:22:18,872 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:22:18,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:22:19,173 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:22:19,173 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:22:19,173 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:22:19,173 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:22:19,174 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:22:19,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:22:19,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:22:19,175 INFO L87 Difference]: Start difference. First operand 14219 states and 21552 transitions. Second operand 6 states. [2018-10-24 18:22:38,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:22:38,224 INFO L93 Difference]: Finished difference Result 56456 states and 95984 transitions. [2018-10-24 18:22:38,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 18:22:38,225 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2018-10-24 18:22:38,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:22:38,476 INFO L225 Difference]: With dead ends: 56456 [2018-10-24 18:22:38,476 INFO L226 Difference]: Without dead ends: 42243 [2018-10-24 18:22:38,588 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 18:22:38,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42243 states. [2018-10-24 18:22:39,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42243 to 42003. [2018-10-24 18:22:39,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42003 states. [2018-10-24 18:22:39,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42003 states to 42003 states and 62984 transitions. [2018-10-24 18:22:39,767 INFO L78 Accepts]: Start accepts. Automaton has 42003 states and 62984 transitions. Word has length 141 [2018-10-24 18:22:39,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:22:39,767 INFO L481 AbstractCegarLoop]: Abstraction has 42003 states and 62984 transitions. [2018-10-24 18:22:39,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:22:39,768 INFO L276 IsEmpty]: Start isEmpty. Operand 42003 states and 62984 transitions. [2018-10-24 18:22:39,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-24 18:22:39,773 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:22:39,773 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:22:39,773 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:22:39,774 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:22:39,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1761661121, now seen corresponding path program 1 times [2018-10-24 18:22:39,774 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:22:39,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:22:39,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:22:39,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:22:39,776 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:22:39,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:22:40,385 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:22:40,564 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:22:40,564 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:22:40,564 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:22:40,565 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:22:40,565 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:22:40,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:22:40,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:22:40,566 INFO L87 Difference]: Start difference. First operand 42003 states and 62984 transitions. Second operand 6 states. [2018-10-24 18:22:53,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:22:53,199 INFO L93 Difference]: Finished difference Result 104625 states and 165922 transitions. [2018-10-24 18:22:53,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:22:53,200 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 162 [2018-10-24 18:22:53,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:22:53,471 INFO L225 Difference]: With dead ends: 104625 [2018-10-24 18:22:53,471 INFO L226 Difference]: Without dead ends: 62628 [2018-10-24 18:22:53,700 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:22:53,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62628 states. [2018-10-24 18:22:54,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62628 to 62378. [2018-10-24 18:22:54,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62378 states. [2018-10-24 18:22:55,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62378 states to 62378 states and 87794 transitions. [2018-10-24 18:22:55,220 INFO L78 Accepts]: Start accepts. Automaton has 62378 states and 87794 transitions. Word has length 162 [2018-10-24 18:22:55,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:22:55,221 INFO L481 AbstractCegarLoop]: Abstraction has 62378 states and 87794 transitions. [2018-10-24 18:22:55,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:22:55,222 INFO L276 IsEmpty]: Start isEmpty. Operand 62378 states and 87794 transitions. [2018-10-24 18:22:55,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-10-24 18:22:55,240 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:22:55,240 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 18:22:55,241 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:22:55,241 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:22:55,241 INFO L82 PathProgramCache]: Analyzing trace with hash -666775580, now seen corresponding path program 1 times [2018-10-24 18:22:55,241 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:22:55,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:22:55,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:22:55,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:22:55,243 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:22:55,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:22:55,599 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 60 proven. 81 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:22:55,600 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:22:55,600 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:22:55,602 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 211 with the following transitions: [2018-10-24 18:22:55,606 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], [2063], [2065], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [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], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2424], [2425], [2428], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-24 18:22:55,702 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:22:55,702 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:22:58,545 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:22:58,547 INFO L272 AbstractInterpreter]: Visited 92 different actions 92 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 18:22:58,563 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:22:58,563 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:23:00,829 INFO L232 lantSequenceWeakener]: Weakened 202 states. On average, predicates are now at 75.43% of their original sizes. [2018-10-24 18:23:00,829 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:23:01,423 INFO L413 sIntCurrentIteration]: We have 209 unified AI predicates [2018-10-24 18:23:01,424 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:23:01,425 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:23:01,425 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2018-10-24 18:23:01,425 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:23:01,426 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 18:23:01,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 18:23:01,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:23:01,426 INFO L87 Difference]: Start difference. First operand 62378 states and 87794 transitions. Second operand 8 states. [2018-10-24 18:23:07,804 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 18:24:58,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 18:24:58,674 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 18:24:58,680 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 18:24:58,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 06:24:58 BoogieIcfgContainer [2018-10-24 18:24:58,681 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 18:24:58,682 INFO L168 Benchmark]: Toolchain (without parser) took 225773.73 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 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-24 18:24:58,683 INFO L168 Benchmark]: CDTParser took 0.25 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 18:24:58,684 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2231.28 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: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. [2018-10-24 18:24:58,685 INFO L168 Benchmark]: Boogie Procedure Inliner took 469.87 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 784.3 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 68.8 MB. Max. memory is 7.1 GB. [2018-10-24 18:24:58,685 INFO L168 Benchmark]: Boogie Preprocessor took 317.32 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: 36.4 MB). Peak memory consumption was 36.4 MB. Max. memory is 7.1 GB. [2018-10-24 18:24:58,686 INFO L168 Benchmark]: RCFGBuilder took 12628.44 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 182.5 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -175.8 MB). Peak memory consumption was 669.6 MB. Max. memory is 7.1 GB. [2018-10-24 18:24:58,687 INFO L168 Benchmark]: TraceAbstraction took 210121.59 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 2.7 GB in the end (delta: -338.5 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-24 18:24:58,692 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 2231.28 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: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 469.87 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 784.3 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 68.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 317.32 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: 36.4 MB). Peak memory consumption was 36.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12628.44 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 182.5 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -175.8 MB). Peak memory consumption was 669.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210121.59 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 2.7 GB in the end (delta: -338.5 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 102). Cancelled while BasicCegarLoop was constructing difference of abstraction (62378states) and FLOYD_HOARE automaton (currently 8 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (56758 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 210.0s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 197.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1488 SDtfs, 21800 SDslu, 1037 SDs, 0 SdLazy, 35655 SolverSat, 8477 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 155.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 266 GetRequests, 216 SyntacticMatches, 6 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62378occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.9s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9953625322046373 AbsIntWeakeningRatio, 0.1291866028708134 AbsIntAvgWeakeningVarsNumRemoved, 1041.6937799043062 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.5s AutomataMinimizationTime, 6 MinimizatonAttempts, 655 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 901 NumberOfCodeBlocks, 901 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 894 ConstructedInterpolants, 0 QuantifiedInterpolants, 570046 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 215/296 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown