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/Problem15_label56_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:53:11,776 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:53:11,778 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:53:11,791 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:53:11,791 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:53:11,792 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:53:11,793 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:53:11,795 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:53:11,797 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:53:11,798 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:53:11,799 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:53:11,799 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:53:11,800 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:53:11,801 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:53:11,802 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:53:11,803 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:53:11,803 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:53:11,805 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:53:11,807 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:53:11,809 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:53:11,813 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:53:11,815 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:53:11,820 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 21:53:11,831 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 21:53:11,831 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 21:53:11,832 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 21:53:11,833 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 21:53:11,833 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 21:53:11,859 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:53:11,860 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:53:11,860 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:53:11,861 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:53:11,862 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:53:11,862 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:53:11,862 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:53:11,862 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:53:11,862 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:53:11,863 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:53:11,863 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:53:11,863 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:53:11,864 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:53:11,865 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:53:11,865 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:53:11,865 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:53:11,865 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:53:11,866 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:53:11,868 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:53:11,868 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:53:11,868 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:53:11,869 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:53:11,869 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:53:11,869 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:53:11,869 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:53:11,870 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:53:11,870 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:53:11,870 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:53:11,870 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:53:11,870 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:53:11,871 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:53:11,871 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:53:11,871 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:53:11,871 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:53:11,948 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:53:11,963 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:53:11,968 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:53:11,969 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:53:11,970 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:53:11,971 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label56_true-unreach-call.c [2018-10-24 21:53:12,027 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d78fc017d/92a1d39218854850b3fb09df2f0d0a42/FLAG1c308eb5f [2018-10-24 21:53:12,811 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:53:12,812 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label56_true-unreach-call.c [2018-10-24 21:53:12,839 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d78fc017d/92a1d39218854850b3fb09df2f0d0a42/FLAG1c308eb5f [2018-10-24 21:53:12,860 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d78fc017d/92a1d39218854850b3fb09df2f0d0a42 [2018-10-24 21:53:12,872 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:53:12,873 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:53:12,874 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:53:12,875 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:53:12,879 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:53:12,880 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:53:12" (1/1) ... [2018-10-24 21:53:12,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d5d0ad1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:53:12, skipping insertion in model container [2018-10-24 21:53:12,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:53:12" (1/1) ... [2018-10-24 21:53:12,893 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:53:12,986 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:53:13,775 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:53:13,780 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:53:14,111 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:53:14,134 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:53:14,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:53:14 WrapperNode [2018-10-24 21:53:14,135 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:53:14,136 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:53:14,137 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:53:14,138 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:53:14,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:53:14" (1/1) ... [2018-10-24 21:53:14,192 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:53:14" (1/1) ... [2018-10-24 21:53:14,549 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:53:14,549 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:53:14,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:53:14,550 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:53:14,562 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:53:14" (1/1) ... [2018-10-24 21:53:14,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:53:14" (1/1) ... [2018-10-24 21:53:14,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:53:14" (1/1) ... [2018-10-24 21:53:14,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:53:14" (1/1) ... [2018-10-24 21:53:14,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:53:14" (1/1) ... [2018-10-24 21:53:14,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:53:14" (1/1) ... [2018-10-24 21:53:14,769 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:53:14" (1/1) ... [2018-10-24 21:53:14,815 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:53:14,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:53:14,816 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:53:14,816 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:53:14,817 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:53:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:53:14,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:53:14,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:53:14,884 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:53:14,884 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:53:14,884 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:53:14,884 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:53:14,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:53:14,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:53:14,885 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:53:14,885 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:53:23,185 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:53:23,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:53:23 BoogieIcfgContainer [2018-10-24 21:53:23,186 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:53:23,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:53:23,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:53:23,193 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:53:23,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:53:12" (1/3) ... [2018-10-24 21:53:23,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64241fe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:53:23, skipping insertion in model container [2018-10-24 21:53:23,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:53:14" (2/3) ... [2018-10-24 21:53:23,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64241fe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:53:23, skipping insertion in model container [2018-10-24 21:53:23,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:53:23" (3/3) ... [2018-10-24 21:53:23,197 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label56_true-unreach-call.c [2018-10-24 21:53:23,207 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:53:23,219 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:53:23,237 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:53:23,286 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:53:23,286 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:53:23,286 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:53:23,286 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:53:23,287 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:53:23,287 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:53:23,287 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:53:23,287 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:53:23,319 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-24 21:53:23,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-24 21:53:23,327 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:53:23,329 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] [2018-10-24 21:53:23,331 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:53:23,337 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:53:23,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1936473164, now seen corresponding path program 1 times [2018-10-24 21:53:23,340 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:53:23,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:53:23,396 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:53:23,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:53:23,396 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:53:23,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:53:23,838 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-24 21:53:23,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:53:23,854 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:53:23,854 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:53:23,855 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:53:23,862 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:53:23,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:53:23,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:53:23,882 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-10-24 21:53:31,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:53:31,728 INFO L93 Difference]: Finished difference Result 1501 states and 2761 transitions. [2018-10-24 21:53:31,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:53:31,730 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2018-10-24 21:53:31,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:53:31,760 INFO L225 Difference]: With dead ends: 1501 [2018-10-24 21:53:31,760 INFO L226 Difference]: Without dead ends: 1057 [2018-10-24 21:53:31,773 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:53:31,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2018-10-24 21:53:31,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 744. [2018-10-24 21:53:31,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-24 21:53:31,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1125 transitions. [2018-10-24 21:53:31,924 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1125 transitions. Word has length 40 [2018-10-24 21:53:31,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:53:31,924 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1125 transitions. [2018-10-24 21:53:31,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:53:31,925 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1125 transitions. [2018-10-24 21:53:31,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-24 21:53:31,935 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:53:31,935 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:53:31,935 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:53:31,938 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:53:31,938 INFO L82 PathProgramCache]: Analyzing trace with hash -2019574921, now seen corresponding path program 1 times [2018-10-24 21:53:31,938 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:53:31,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:53:31,940 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:53:31,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:53:31,940 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:53:32,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:53:32,253 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:53:32,253 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:53:32,253 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:53:32,253 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:53:32,255 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:53:32,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:53:32,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:53:32,256 INFO L87 Difference]: Start difference. First operand 744 states and 1125 transitions. Second operand 4 states. [2018-10-24 21:53:40,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:53:40,758 INFO L93 Difference]: Finished difference Result 2731 states and 4238 transitions. [2018-10-24 21:53:40,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:53:40,759 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 110 [2018-10-24 21:53:40,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:53:40,775 INFO L225 Difference]: With dead ends: 2731 [2018-10-24 21:53:40,775 INFO L226 Difference]: Without dead ends: 1993 [2018-10-24 21:53:40,782 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:53:40,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1993 states. [2018-10-24 21:53:40,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1993 to 1991. [2018-10-24 21:53:40,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1991 states. [2018-10-24 21:53:40,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1991 states to 1991 states and 2758 transitions. [2018-10-24 21:53:40,867 INFO L78 Accepts]: Start accepts. Automaton has 1991 states and 2758 transitions. Word has length 110 [2018-10-24 21:53:40,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:53:40,867 INFO L481 AbstractCegarLoop]: Abstraction has 1991 states and 2758 transitions. [2018-10-24 21:53:40,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:53:40,868 INFO L276 IsEmpty]: Start isEmpty. Operand 1991 states and 2758 transitions. [2018-10-24 21:53:40,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-10-24 21:53:40,874 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:53:40,874 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 21:53:40,875 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:53:40,875 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:53:40,875 INFO L82 PathProgramCache]: Analyzing trace with hash 2084991877, now seen corresponding path program 1 times [2018-10-24 21:53:40,875 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:53:40,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:53:40,876 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:53:40,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:53:40,877 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:53:40,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:53:41,302 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 69 proven. 71 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 21:53:41,303 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:53:41,303 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:53:41,304 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 217 with the following transitions: [2018-10-24 21:53:41,307 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [293], [295], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [613], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 21:53:41,379 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:53:41,379 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:53:43,192 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:53:54,011 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:53:54,013 INFO L272 AbstractInterpreter]: Visited 104 different actions 299 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 21:53:54,028 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:53:54,028 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:53:57,287 INFO L232 lantSequenceWeakener]: Weakened 40 states. On average, predicates are now at 80.34% of their original sizes. [2018-10-24 21:53:57,287 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:55:10,453 INFO L413 sIntCurrentIteration]: We have 215 unified AI predicates [2018-10-24 21:55:10,454 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:55:10,455 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:55:10,455 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-10-24 21:55:10,455 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:55:10,456 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-24 21:55:10,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-24 21:55:10,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2018-10-24 21:55:10,457 INFO L87 Difference]: Start difference. First operand 1991 states and 2758 transitions. Second operand 18 states. Received shutdown request... [2018-10-24 21:57:20,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-24 21:57:20,759 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:57:20,765 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:57:20,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:57:20 BoogieIcfgContainer [2018-10-24 21:57:20,766 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:57:20,766 INFO L168 Benchmark]: Toolchain (without parser) took 247894.18 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 1.8 GB in the end (delta: -419.1 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-24 21:57:20,768 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:57:20,768 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1261.48 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: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2018-10-24 21:57:20,769 INFO L168 Benchmark]: Boogie Procedure Inliner took 412.80 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 723.5 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -839.6 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. [2018-10-24 21:57:20,770 INFO L168 Benchmark]: Boogie Preprocessor took 265.70 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2018-10-24 21:57:20,771 INFO L168 Benchmark]: RCFGBuilder took 8370.80 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 304.9 MB). Peak memory consumption was 304.9 MB. Max. memory is 7.1 GB. [2018-10-24 21:57:20,772 INFO L168 Benchmark]: TraceAbstraction took 237578.39 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.8 GB in the beginning and 1.8 GB in the end (delta: -4.3 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-24 21:57:20,780 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1261.48 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: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 412.80 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 723.5 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -839.6 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 265.70 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8370.80 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 304.9 MB). Peak memory consumption was 304.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 237578.39 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.8 GB in the beginning and 1.8 GB in the end (delta: -4.3 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 106]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 106). Cancelled while BasicCegarLoop was constructing difference of abstraction (1991states) and FLOYD_HOARE automaton (currently 17 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (1134 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 237.4s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 146.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 837 SDtfs, 3967 SDslu, 426 SDs, 0 SdLazy, 5314 SolverSat, 1202 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 57.9s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 235 GetRequests, 137 SyntacticMatches, 69 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 76.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1991occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 12.7s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9945146612740143 AbsIntWeakeningRatio, 0.12093023255813953 AbsIntAvgWeakeningVarsNumRemoved, 187.08372093023254 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 2 MinimizatonAttempts, 315 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 366 NumberOfCodeBlocks, 366 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 363 ConstructedInterpolants, 0 QuantifiedInterpolants, 252702 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 108/179 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown