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/Problem17_label32_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 22:10:37,870 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 22:10:37,872 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 22:10:37,884 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 22:10:37,885 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 22:10:37,886 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 22:10:37,887 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 22:10:37,889 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 22:10:37,890 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 22:10:37,891 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 22:10:37,892 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 22:10:37,892 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 22:10:37,893 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 22:10:37,894 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 22:10:37,895 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 22:10:37,896 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 22:10:37,897 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 22:10:37,899 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 22:10:37,901 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 22:10:37,903 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 22:10:37,904 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 22:10:37,905 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 22:10:37,908 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 22:10:37,917 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 22:10:37,937 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 22:10:37,938 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 22:10:37,939 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 22:10:37,939 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 22:10:37,939 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 22:10:37,939 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 22:10:37,940 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 22:10:37,940 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 22:10:37,940 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 22:10:37,940 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 22:10:37,941 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 22:10:37,941 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 22:10:37,942 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 22:10:37,942 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 22:10:37,942 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 22:10:37,942 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 22:10:37,943 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 22:10:37,943 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 22:10:37,943 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 22:10:37,943 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 22:10:37,944 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 22:10:37,944 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 22:10:37,944 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 22:10:37,944 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 22:10:37,945 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:10:37,945 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 22:10:37,945 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 22:10:37,945 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 22:10:37,946 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 22:10:37,946 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 22:10:37,946 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 22:10:37,946 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 22:10:37,946 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 22:10:37,947 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 22:10:37,990 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 22:10:38,005 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 22:10:38,011 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 22:10:38,012 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 22:10:38,013 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 22:10:38,014 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label32_true-unreach-call.c [2018-10-24 22:10:38,083 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4a7d40867/076d66e76d77486cb1dc0d2dae8b8828/FLAG061393d81 [2018-10-24 22:10:38,768 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 22:10:38,771 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label32_true-unreach-call.c [2018-10-24 22:10:38,803 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4a7d40867/076d66e76d77486cb1dc0d2dae8b8828/FLAG061393d81 [2018-10-24 22:10:38,823 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4a7d40867/076d66e76d77486cb1dc0d2dae8b8828 [2018-10-24 22:10:38,838 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 22:10:38,839 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 22:10:38,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 22:10:38,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 22:10:38,849 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 22:10:38,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:10:38" (1/1) ... [2018-10-24 22:10:38,854 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 10:10:38, skipping insertion in model container [2018-10-24 22:10:38,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:10:38" (1/1) ... [2018-10-24 22:10:38,866 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 22:10:38,997 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 22:10:39,913 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:10:39,918 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 22:10:40,300 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:10:40,324 INFO L193 MainTranslator]: Completed translation [2018-10-24 22:10:40,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:10:40 WrapperNode [2018-10-24 22:10:40,325 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 22:10:40,326 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 22:10:40,327 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 22:10:40,327 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 22:10:40,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:10:40" (1/1) ... [2018-10-24 22:10:40,382 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:10:40" (1/1) ... [2018-10-24 22:10:40,827 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 22:10:40,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 22:10:40,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 22:10:40,828 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 22:10:40,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:10:40" (1/1) ... [2018-10-24 22:10:40,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:10:40" (1/1) ... [2018-10-24 22:10:40,869 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:10:40" (1/1) ... [2018-10-24 22:10:40,869 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:10:40" (1/1) ... [2018-10-24 22:10:40,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:10:40" (1/1) ... [2018-10-24 22:10:41,026 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:10:40" (1/1) ... [2018-10-24 22:10:41,082 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:10:40" (1/1) ... [2018-10-24 22:10:41,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 22:10:41,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 22:10:41,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 22:10:41,137 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 22:10:41,138 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:10:40" (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 22:10:41,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 22:10:41,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 22:10:41,210 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 22:10:41,210 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 22:10:41,211 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 22:10:41,211 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 22:10:41,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 22:10:41,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 22:10:41,211 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 22:10:41,212 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 22:10:55,673 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 22:10:55,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:10:55 BoogieIcfgContainer [2018-10-24 22:10:55,674 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 22:10:55,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 22:10:55,677 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 22:10:55,680 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 22:10:55,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:10:38" (1/3) ... [2018-10-24 22:10:55,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20d91924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:10:55, skipping insertion in model container [2018-10-24 22:10:55,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:10:40" (2/3) ... [2018-10-24 22:10:55,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20d91924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:10:55, skipping insertion in model container [2018-10-24 22:10:55,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:10:55" (3/3) ... [2018-10-24 22:10:55,684 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label32_true-unreach-call.c [2018-10-24 22:10:55,694 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 22:10:55,703 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 22:10:55,721 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 22:10:55,763 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 22:10:55,764 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 22:10:55,764 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 22:10:55,764 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 22:10:55,764 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 22:10:55,765 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 22:10:55,765 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 22:10:55,765 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 22:10:55,802 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-24 22:10:55,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-10-24 22:10:55,812 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:10:55,813 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:10:55,816 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:10:55,822 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:10:55,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1058838858, now seen corresponding path program 1 times [2018-10-24 22:10:55,826 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:10:55,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:10:55,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:10:55,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:10:55,884 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:10:56,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:10:56,431 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 22:10:56,433 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:10:56,434 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:10:56,434 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:10:56,440 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:10:56,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:10:56,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:10:56,462 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-24 22:11:09,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:11:09,124 INFO L93 Difference]: Finished difference Result 2118 states and 3937 transitions. [2018-10-24 22:11:09,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:11:09,125 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2018-10-24 22:11:09,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:11:09,156 INFO L225 Difference]: With dead ends: 2118 [2018-10-24 22:11:09,156 INFO L226 Difference]: Without dead ends: 1508 [2018-10-24 22:11:09,168 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 22:11:09,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2018-10-24 22:11:09,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 1039. [2018-10-24 22:11:09,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2018-10-24 22:11:09,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1596 transitions. [2018-10-24 22:11:09,349 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1596 transitions. Word has length 55 [2018-10-24 22:11:09,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:11:09,349 INFO L481 AbstractCegarLoop]: Abstraction has 1039 states and 1596 transitions. [2018-10-24 22:11:09,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:11:09,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1596 transitions. [2018-10-24 22:11:09,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-24 22:11:09,362 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:11:09,363 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:11:09,363 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:11:09,363 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:11:09,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1690523775, now seen corresponding path program 1 times [2018-10-24 22:11:09,364 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:11:09,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:11:09,367 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:11:09,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:11:09,367 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:11:09,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:11:09,709 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:11:09,709 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:11:09,709 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:11:09,710 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 131 with the following transitions: [2018-10-24 22:11:09,712 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1050], [1052], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 22:11:09,777 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:11:09,778 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:11:11,205 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:11:30,451 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 22:11:30,453 INFO L272 AbstractInterpreter]: Visited 83 different actions 543 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 22:11:30,491 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:11:30,493 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 22:11:30,493 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:11:30,493 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 22:11:30,505 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:11:30,506 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 22:11:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:11:30,600 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 22:11:59,380 WARN L179 SmtUtils]: Spent 24.24 s on a formula simplification. DAG size of input: 135 DAG size of output: 98 [2018-10-24 22:12:19,672 WARN L179 SmtUtils]: Spent 16.13 s on a formula simplification. DAG size of input: 98 DAG size of output: 73 [2018-10-24 22:12:20,217 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 4 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:12:20,217 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 22:12:24,577 WARN L179 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 133 DAG size of output: 16 [2018-10-24 22:12:24,685 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 28 [2018-10-24 22:12:27,245 WARN L179 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 26 [2018-10-24 22:12:27,580 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:12:27,614 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-24 22:12:27,615 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2018-10-24 22:12:27,615 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:12:27,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:12:27,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:12:27,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=160, Unknown=5, NotChecked=0, Total=210 [2018-10-24 22:12:27,617 INFO L87 Difference]: Start difference. First operand 1039 states and 1596 transitions. Second operand 6 states. [2018-10-24 22:13:33,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:13:33,649 INFO L93 Difference]: Finished difference Result 3903 states and 6150 transitions. [2018-10-24 22:13:33,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:13:33,653 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2018-10-24 22:13:33,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:13:33,673 INFO L225 Difference]: With dead ends: 3903 [2018-10-24 22:13:33,674 INFO L226 Difference]: Without dead ends: 2870 [2018-10-24 22:13:33,682 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 254 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 55.9s TimeCoverageRelationStatistics Valid=52, Invalid=183, Unknown=5, NotChecked=0, Total=240 [2018-10-24 22:13:33,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2870 states. [2018-10-24 22:13:33,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2870 to 2840. [2018-10-24 22:13:33,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2840 states. [2018-10-24 22:13:33,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2840 states to 2840 states and 4219 transitions. [2018-10-24 22:13:33,794 INFO L78 Accepts]: Start accepts. Automaton has 2840 states and 4219 transitions. Word has length 130 [2018-10-24 22:13:33,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:13:33,795 INFO L481 AbstractCegarLoop]: Abstraction has 2840 states and 4219 transitions. [2018-10-24 22:13:33,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:13:33,795 INFO L276 IsEmpty]: Start isEmpty. Operand 2840 states and 4219 transitions. [2018-10-24 22:13:33,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-24 22:13:33,808 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:13:33,808 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:13:33,809 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:13:33,809 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:13:33,809 INFO L82 PathProgramCache]: Analyzing trace with hash 779894663, now seen corresponding path program 1 times [2018-10-24 22:13:33,809 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:13:33,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:13:33,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:13:33,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:13:33,815 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:13:33,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:13:34,186 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:13:34,365 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 42 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:13:34,365 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:13:34,366 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:13:34,366 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 144 with the following transitions: [2018-10-24 22:13:34,366 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1050], [1052], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 22:13:34,372 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:13:34,372 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:13:35,699 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:13:47,091 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 22:13:47,092 INFO L272 AbstractInterpreter]: Visited 96 different actions 274 times. Merged at 5 different actions 10 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 22:13:47,126 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:13:47,127 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 22:13:47,127 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:13:47,127 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 22:13:47,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:13:47,144 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 22:13:47,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:13:47,230 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 22:13:47,399 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:13:47,400 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 22:13:47,506 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:13:47,526 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:13:47,526 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-10-24 22:13:47,526 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:13:47,527 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 22:13:47,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 22:13:47,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:13:47,528 INFO L87 Difference]: Start difference. First operand 2840 states and 4219 transitions. Second operand 3 states. [2018-10-24 22:13:52,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:13:52,155 INFO L93 Difference]: Finished difference Result 8289 states and 12561 transitions. [2018-10-24 22:13:52,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 22:13:52,155 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 143 [2018-10-24 22:13:52,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:13:52,193 INFO L225 Difference]: With dead ends: 8289 [2018-10-24 22:13:52,194 INFO L226 Difference]: Without dead ends: 5455 [2018-10-24 22:13:52,216 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 285 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:13:52,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5455 states. [2018-10-24 22:13:52,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5455 to 5453. [2018-10-24 22:13:52,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5453 states. [2018-10-24 22:13:52,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5453 states to 5453 states and 8081 transitions. [2018-10-24 22:13:52,400 INFO L78 Accepts]: Start accepts. Automaton has 5453 states and 8081 transitions. Word has length 143 [2018-10-24 22:13:52,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:13:52,400 INFO L481 AbstractCegarLoop]: Abstraction has 5453 states and 8081 transitions. [2018-10-24 22:13:52,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 22:13:52,401 INFO L276 IsEmpty]: Start isEmpty. Operand 5453 states and 8081 transitions. [2018-10-24 22:13:52,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-10-24 22:13:52,406 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:13:52,407 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:13:52,407 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:13:52,407 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:13:52,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1014156896, now seen corresponding path program 1 times [2018-10-24 22:13:52,408 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:13:52,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:13:52,413 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:13:52,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:13:52,413 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:13:52,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:13:52,809 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:13:52,810 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:13:52,810 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 22:13:52,810 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:13:52,811 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 22:13:52,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 22:13:52,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 22:13:52,813 INFO L87 Difference]: Start difference. First operand 5453 states and 8081 transitions. Second operand 5 states. [2018-10-24 22:14:10,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:14:10,647 INFO L93 Difference]: Finished difference Result 18058 states and 27905 transitions. [2018-10-24 22:14:10,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 22:14:10,648 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 193 [2018-10-24 22:14:10,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:14:10,721 INFO L225 Difference]: With dead ends: 18058 [2018-10-24 22:14:10,722 INFO L226 Difference]: Without dead ends: 12611 [2018-10-24 22:14:10,758 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 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 22:14:10,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12611 states. [2018-10-24 22:14:11,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12611 to 12561. [2018-10-24 22:14:11,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12561 states. [2018-10-24 22:14:11,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12561 states to 12561 states and 17641 transitions. [2018-10-24 22:14:11,129 INFO L78 Accepts]: Start accepts. Automaton has 12561 states and 17641 transitions. Word has length 193 [2018-10-24 22:14:11,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:14:11,130 INFO L481 AbstractCegarLoop]: Abstraction has 12561 states and 17641 transitions. [2018-10-24 22:14:11,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 22:14:11,130 INFO L276 IsEmpty]: Start isEmpty. Operand 12561 states and 17641 transitions. [2018-10-24 22:14:11,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-10-24 22:14:11,139 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:14:11,139 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2018-10-24 22:14:11,139 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:14:11,140 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:14:11,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1601373575, now seen corresponding path program 1 times [2018-10-24 22:14:11,140 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:14:11,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:14:11,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:14:11,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:14:11,141 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:14:11,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:14:11,444 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:14:11,727 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 97 proven. 5 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-10-24 22:14:11,727 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:14:11,727 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:14:11,727 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 220 with the following transitions: [2018-10-24 22:14:11,728 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1050], [1052], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1286], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 22:14:11,734 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:14:11,735 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:14:12,578 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:14:35,544 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 22:14:35,544 INFO L272 AbstractInterpreter]: Visited 98 different actions 648 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 22:14:35,552 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:14:35,552 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 22:14:35,552 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:14:35,552 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 22:14:35,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:14:35,569 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 22:14:35,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:14:35,649 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 22:14:35,748 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:14:35,748 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 22:14:36,073 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:14:36,106 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 22:14:36,106 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-24 22:14:36,107 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 22:14:36,108 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 22:14:36,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 22:14:36,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-10-24 22:14:36,109 INFO L87 Difference]: Start difference. First operand 12561 states and 17641 transitions. Second operand 9 states. Received shutdown request... [2018-10-24 22:14:39,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-24 22:14:39,136 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:14:39,143 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:14:39,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:14:39 BoogieIcfgContainer [2018-10-24 22:14:39,143 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:14:39,144 INFO L168 Benchmark]: Toolchain (without parser) took 240305.67 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.7 GB in the end (delta: -2.2 GB). Peak memory consumption was 354.3 MB. Max. memory is 7.1 GB. [2018-10-24 22:14:39,145 INFO L168 Benchmark]: CDTParser took 0.23 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 22:14:39,145 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1481.52 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 129.5 MB). Peak memory consumption was 129.5 MB. Max. memory is 7.1 GB. [2018-10-24 22:14:39,147 INFO L168 Benchmark]: Boogie Procedure Inliner took 501.31 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 769.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -917.2 MB). Peak memory consumption was 56.4 MB. Max. memory is 7.1 GB. [2018-10-24 22:14:39,148 INFO L168 Benchmark]: Boogie Preprocessor took 307.76 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: 29.8 MB). Peak memory consumption was 29.8 MB. Max. memory is 7.1 GB. [2018-10-24 22:14:39,149 INFO L168 Benchmark]: RCFGBuilder took 14539.41 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 462.9 MB). Peak memory consumption was 462.9 MB. Max. memory is 7.1 GB. [2018-10-24 22:14:39,149 INFO L168 Benchmark]: TraceAbstraction took 223466.79 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 3.7 GB in the end (delta: -1.9 GB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 22:14:39,154 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1481.52 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 129.5 MB). Peak memory consumption was 129.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 501.31 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 769.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -917.2 MB). Peak memory consumption was 56.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 307.76 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: 29.8 MB). Peak memory consumption was 29.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 14539.41 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 462.9 MB). Peak memory consumption was 462.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 223466.79 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 3.7 GB in the end (delta: -1.9 GB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 152]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 152). Cancelled while BasicCegarLoop was constructing difference of abstraction (12561states) and FLOYD_HOARE automaton (currently 13 states, 9 states before enhancement),while ReachableStatesComputation was computing reachable states (6494 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 223.3s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 104.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1982 SDtfs, 7562 SDslu, 1217 SDs, 0 SdLazy, 14407 SolverSat, 4369 SolverUnsat, 20 SolverUnknown, 0 SolverNotchecked, 98.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1035 GetRequests, 982 SyntacticMatches, 9 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 57.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12561occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 57.3s AbstIntTime, 3 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 4 MinimizatonAttempts, 551 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 59.6s InterpolantComputationTime, 1232 NumberOfCodeBlocks, 1232 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1713 ConstructedInterpolants, 129 QuantifiedInterpolants, 2229783 SizeOfPredicates, 5 NumberOfNonLiveVariables, 990 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 742/849 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown