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/Problem01_label04_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 00:33:47,083 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 00:33:47,085 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 00:33:47,098 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 00:33:47,098 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 00:33:47,099 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 00:33:47,100 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 00:33:47,102 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 00:33:47,104 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 00:33:47,105 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 00:33:47,105 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 00:33:47,106 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 00:33:47,107 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 00:33:47,108 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 00:33:47,109 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 00:33:47,110 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 00:33:47,113 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 00:33:47,114 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 00:33:47,124 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 00:33:47,129 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 00:33:47,131 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 00:33:47,135 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 00:33:47,137 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-27 00:33:47,143 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 00:33:47,143 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 00:33:47,144 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 00:33:47,144 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 00:33:47,145 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 [2018-10-27 00:33:47,164 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 00:33:47,165 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 00:33:47,166 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 00:33:47,166 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 00:33:47,166 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 00:33:47,166 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 00:33:47,166 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 00:33:47,167 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 00:33:47,167 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 00:33:47,167 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 00:33:47,167 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 00:33:47,167 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 00:33:47,168 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 00:33:47,168 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 00:33:47,168 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 00:33:47,169 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 00:33:47,169 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 00:33:47,169 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 00:33:47,169 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 00:33:47,169 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 00:33:47,170 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 00:33:47,170 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 00:33:47,170 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 00:33:47,170 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 00:33:47,170 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 00:33:47,171 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 00:33:47,171 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 00:33:47,171 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 00:33:47,171 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 00:33:47,171 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 00:33:47,172 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 00:33:47,172 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 00:33:47,172 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 00:33:47,172 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 00:33:47,216 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 00:33:47,228 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 00:33:47,232 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 00:33:47,234 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 00:33:47,234 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 00:33:47,235 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label04_true-unreach-call_false-termination.c [2018-10-27 00:33:47,296 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/350d5276c/5d5fd33bcc7249899c0e2310af23d521/FLAG1a862fe4c [2018-10-27 00:33:47,891 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 00:33:47,892 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label04_true-unreach-call_false-termination.c [2018-10-27 00:33:47,904 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/350d5276c/5d5fd33bcc7249899c0e2310af23d521/FLAG1a862fe4c [2018-10-27 00:33:47,922 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/350d5276c/5d5fd33bcc7249899c0e2310af23d521 [2018-10-27 00:33:47,936 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 00:33:47,939 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 00:33:47,940 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 00:33:47,940 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 00:33:47,945 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 00:33:47,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:33:47" (1/1) ... [2018-10-27 00:33:47,950 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b38e11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:33:47, skipping insertion in model container [2018-10-27 00:33:47,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:33:47" (1/1) ... [2018-10-27 00:33:47,962 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 00:33:48,037 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 00:33:48,470 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:33:48,475 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 00:33:48,595 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:33:48,613 INFO L193 MainTranslator]: Completed translation [2018-10-27 00:33:48,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:33:48 WrapperNode [2018-10-27 00:33:48,614 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 00:33:48,615 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 00:33:48,615 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 00:33:48,615 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 00:33:48,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:33:48" (1/1) ... [2018-10-27 00:33:48,662 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:33:48" (1/1) ... [2018-10-27 00:33:48,815 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 00:33:48,815 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 00:33:48,816 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 00:33:48,816 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 00:33:48,824 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:33:48" (1/1) ... [2018-10-27 00:33:48,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:33:48" (1/1) ... [2018-10-27 00:33:48,830 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:33:48" (1/1) ... [2018-10-27 00:33:48,830 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:33:48" (1/1) ... [2018-10-27 00:33:48,852 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:33:48" (1/1) ... [2018-10-27 00:33:48,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:33:48" (1/1) ... [2018-10-27 00:33:48,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:33:48" (1/1) ... [2018-10-27 00:33:48,901 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 00:33:48,902 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 00:33:48,902 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 00:33:48,902 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 00:33:48,903 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:33:48" (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 [2018-10-27 00:33:48,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 00:33:48,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 00:33:48,986 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 00:33:48,986 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 00:33:48,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 00:33:48,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 00:33:48,986 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 00:33:48,987 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 00:33:52,750 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 00:33:52,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:33:52 BoogieIcfgContainer [2018-10-27 00:33:52,756 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 00:33:52,757 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 00:33:52,757 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 00:33:52,762 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 00:33:52,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:33:47" (1/3) ... [2018-10-27 00:33:52,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b51db8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:33:52, skipping insertion in model container [2018-10-27 00:33:52,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:33:48" (2/3) ... [2018-10-27 00:33:52,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b51db8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:33:52, skipping insertion in model container [2018-10-27 00:33:52,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:33:52" (3/3) ... [2018-10-27 00:33:52,767 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label04_true-unreach-call_false-termination.c [2018-10-27 00:33:52,781 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 00:33:52,795 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 00:33:52,814 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 00:33:52,867 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 00:33:52,867 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 00:33:52,867 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 00:33:52,868 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 00:33:52,868 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 00:33:52,869 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 00:33:52,869 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 00:33:52,869 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 00:33:52,909 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2018-10-27 00:33:52,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-27 00:33:52,920 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:33:52,921 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:33:52,924 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:33:52,929 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:33:52,930 INFO L82 PathProgramCache]: Analyzing trace with hash 576878093, now seen corresponding path program 1 times [2018-10-27 00:33:52,932 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:33:52,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:33:52,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:33:52,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:33:52,980 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:33:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:33:53,535 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 00:33:53,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:33:53,693 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:33:53,693 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 00:33:53,694 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:33:53,703 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 00:33:53,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 00:33:53,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 00:33:53,724 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 3 states. [2018-10-27 00:33:55,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:33:55,079 INFO L93 Difference]: Finished difference Result 550 states and 941 transitions. [2018-10-27 00:33:55,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 00:33:55,082 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2018-10-27 00:33:55,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:33:55,101 INFO L225 Difference]: With dead ends: 550 [2018-10-27 00:33:55,101 INFO L226 Difference]: Without dead ends: 340 [2018-10-27 00:33:55,109 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 00:33:55,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-10-27 00:33:55,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-10-27 00:33:55,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-10-27 00:33:55,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 553 transitions. [2018-10-27 00:33:55,206 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 553 transitions. Word has length 103 [2018-10-27 00:33:55,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:33:55,207 INFO L481 AbstractCegarLoop]: Abstraction has 340 states and 553 transitions. [2018-10-27 00:33:55,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 00:33:55,207 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 553 transitions. [2018-10-27 00:33:55,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-27 00:33:55,213 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:33:55,213 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 00:33:55,214 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:33:55,214 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:33:55,214 INFO L82 PathProgramCache]: Analyzing trace with hash 58234702, now seen corresponding path program 1 times [2018-10-27 00:33:55,215 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:33:55,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:33:55,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:33:55,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:33:55,217 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:33:55,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:33:55,471 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 00:33:55,572 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:33:55,573 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:33:55,573 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 00:33:55,573 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:33:55,575 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 00:33:55,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 00:33:55,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:33:55,576 INFO L87 Difference]: Start difference. First operand 340 states and 553 transitions. Second operand 6 states. [2018-10-27 00:33:57,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:33:57,381 INFO L93 Difference]: Finished difference Result 1075 states and 1835 transitions. [2018-10-27 00:33:57,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 00:33:57,382 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2018-10-27 00:33:57,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:33:57,393 INFO L225 Difference]: With dead ends: 1075 [2018-10-27 00:33:57,393 INFO L226 Difference]: Without dead ends: 741 [2018-10-27 00:33:57,400 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 00:33:57,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2018-10-27 00:33:57,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 724. [2018-10-27 00:33:57,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 724 states. [2018-10-27 00:33:57,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1145 transitions. [2018-10-27 00:33:57,456 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1145 transitions. Word has length 114 [2018-10-27 00:33:57,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:33:57,456 INFO L481 AbstractCegarLoop]: Abstraction has 724 states and 1145 transitions. [2018-10-27 00:33:57,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 00:33:57,457 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1145 transitions. [2018-10-27 00:33:57,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-27 00:33:57,464 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:33:57,464 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-27 00:33:57,464 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:33:57,464 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:33:57,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1208092159, now seen corresponding path program 1 times [2018-10-27 00:33:57,467 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:33:57,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:33:57,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:33:57,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:33:57,468 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:33:57,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:33:57,948 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:33:57,948 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:33:57,949 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 00:33:57,950 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 140 with the following transitions: [2018-10-27 00:33:57,953 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [17], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [65], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [461], [463], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-10-27 00:33:58,034 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 00:33:58,035 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 00:34:37,082 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 00:34:37,084 INFO L272 AbstractInterpreter]: Visited 107 different actions 172 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 42 variables. [2018-10-27 00:34:37,097 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:34:37,097 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 00:34:44,571 INFO L227 lantSequenceWeakener]: Weakened 35 states. On average, predicates are now at 81.7% of their original sizes. [2018-10-27 00:34:44,571 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 00:35:59,900 INFO L415 sIntCurrentIteration]: We unified 138 AI predicates to 138 [2018-10-27 00:35:59,901 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 00:35:59,902 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 00:35:59,902 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-10-27 00:35:59,902 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:35:59,903 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-27 00:35:59,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-27 00:35:59,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2018-10-27 00:35:59,904 INFO L87 Difference]: Start difference. First operand 724 states and 1145 transitions. Second operand 19 states. Received shutdown request... [2018-10-27 00:38:11,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-27 00:38:11,355 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 00:38:11,360 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 00:38:11,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 12:38:11 BoogieIcfgContainer [2018-10-27 00:38:11,361 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 00:38:11,361 INFO L168 Benchmark]: Toolchain (without parser) took 263424.97 ms. Allocated memory was 1.5 GB in the beginning and 3.3 GB in the end (delta: 1.8 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -208.1 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-27 00:38:11,364 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 00:38:11,365 INFO L168 Benchmark]: CACSL2BoogieTranslator took 674.47 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-27 00:38:11,366 INFO L168 Benchmark]: Boogie Procedure Inliner took 200.13 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -827.4 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2018-10-27 00:38:11,367 INFO L168 Benchmark]: Boogie Preprocessor took 86.31 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 00:38:11,368 INFO L168 Benchmark]: RCFGBuilder took 3853.79 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 127.9 MB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. [2018-10-27 00:38:11,368 INFO L168 Benchmark]: TraceAbstraction took 258603.89 ms. Allocated memory was 2.3 GB in the beginning and 3.3 GB in the end (delta: 1.0 GB). Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 459.7 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-27 00:38:11,374 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 674.47 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 200.13 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -827.4 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 86.31 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3853.79 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 127.9 MB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 258603.89 ms. Allocated memory was 2.3 GB in the beginning and 3.3 GB in the end (delta: 1.0 GB). Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 459.7 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 464]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 464). Cancelled while BasicCegarLoop was constructing difference of abstraction (724states) and FLOYD_HOARE automaton (currently 24 states, 19 states before enhancement),while ReachableStatesComputation was computing reachable states (235 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 208 locations, 1 error locations. TIMEOUT Result, 258.5s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 134.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 234 SDtfs, 1252 SDslu, 166 SDs, 0 SdLazy, 1701 SolverSat, 426 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 52.5s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 165 GetRequests, 112 SyntacticMatches, 17 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 93.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=724occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 39.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9935868302782407 AbsIntWeakeningRatio, 0.2536231884057971 AbsIntAvgWeakeningVarsNumRemoved, 176.55072463768116 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 17 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 356 NumberOfCodeBlocks, 356 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 353 ConstructedInterpolants, 0 QuantifiedInterpolants, 93747 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 48/50 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown