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_label23_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 00:13:45,037 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 00:13:45,039 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 00:13:45,053 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 00:13:45,053 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 00:13:45,054 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 00:13:45,056 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 00:13:45,058 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 00:13:45,060 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 00:13:45,062 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 00:13:45,063 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 00:13:45,063 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 00:13:45,066 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 00:13:45,067 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 00:13:45,068 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 00:13:45,073 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 00:13:45,075 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 00:13:45,076 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 00:13:45,081 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 00:13:45,086 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 00:13:45,087 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 00:13:45,090 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 00:13:45,097 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 00:13:45,097 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 00:13:45,097 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 00:13:45,098 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 00:13:45,099 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 00:13:45,100 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 00:13:45,100 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 00:13:45,103 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 00:13:45,105 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 00:13:45,106 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 00:13:45,106 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 00:13:45,106 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 00:13:45,109 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 00:13:45,110 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 00:13:45,110 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 00:13:45,129 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 00:13:45,129 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 00:13:45,130 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 00:13:45,130 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 00:13:45,131 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 00:13:45,131 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 00:13:45,131 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 00:13:45,131 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 00:13:45,131 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 00:13:45,132 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 00:13:45,132 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 00:13:45,132 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 00:13:45,133 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 00:13:45,133 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 00:13:45,133 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 00:13:45,133 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 00:13:45,134 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 00:13:45,134 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 00:13:45,134 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 00:13:45,134 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 00:13:45,134 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 00:13:45,135 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 00:13:45,135 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 00:13:45,135 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 00:13:45,135 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 00:13:45,135 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 00:13:45,136 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 00:13:45,136 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 00:13:45,136 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 00:13:45,136 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 00:13:45,136 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 00:13:45,137 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 00:13:45,137 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 00:13:45,137 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 00:13:45,192 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 00:13:45,207 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 00:13:45,213 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 00:13:45,215 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 00:13:45,215 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 00:13:45,220 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label23_false-unreach-call.c [2018-10-27 00:13:45,290 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cbf8087e5/ddb9ba810ffd4542b459c56b8fd9896d/FLAG4e7d3a437 [2018-10-27 00:13:46,003 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 00:13:46,004 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label23_false-unreach-call.c [2018-10-27 00:13:46,028 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cbf8087e5/ddb9ba810ffd4542b459c56b8fd9896d/FLAG4e7d3a437 [2018-10-27 00:13:46,045 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cbf8087e5/ddb9ba810ffd4542b459c56b8fd9896d [2018-10-27 00:13:46,059 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 00:13:46,062 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 00:13:46,065 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 00:13:46,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 00:13:46,070 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 00:13:46,071 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:13:46" (1/1) ... [2018-10-27 00:13:46,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7be7802 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:13:46, skipping insertion in model container [2018-10-27 00:13:46,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:13:46" (1/1) ... [2018-10-27 00:13:46,085 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 00:13:46,228 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 00:13:47,168 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:13:47,173 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 00:13:47,582 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:13:47,609 INFO L193 MainTranslator]: Completed translation [2018-10-27 00:13:47,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:13:47 WrapperNode [2018-10-27 00:13:47,610 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 00:13:47,611 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 00:13:47,611 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 00:13:47,612 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 00:13:47,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:13:47" (1/1) ... [2018-10-27 00:13:47,677 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:13:47" (1/1) ... [2018-10-27 00:13:48,148 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 00:13:48,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 00:13:48,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 00:13:48,149 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 00:13:48,161 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:13:47" (1/1) ... [2018-10-27 00:13:48,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:13:47" (1/1) ... [2018-10-27 00:13:48,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:13:47" (1/1) ... [2018-10-27 00:13:48,193 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:13:47" (1/1) ... [2018-10-27 00:13:48,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:13:47" (1/1) ... [2018-10-27 00:13:48,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:13:47" (1/1) ... [2018-10-27 00:13:48,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:13:47" (1/1) ... [2018-10-27 00:13:48,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 00:13:48,476 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 00:13:48,476 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 00:13:48,476 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 00:13:48,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:13:47" (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 00:13:48,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 00:13:48,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 00:13:48,533 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 00:13:48,533 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 00:13:48,534 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 00:13:48,534 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 00:13:48,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 00:13:48,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 00:13:48,534 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 00:13:48,535 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 00:13:59,702 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 00:13:59,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:13:59 BoogieIcfgContainer [2018-10-27 00:13:59,707 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 00:13:59,709 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 00:13:59,709 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 00:13:59,714 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 00:13:59,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:13:46" (1/3) ... [2018-10-27 00:13:59,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20c69da5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:13:59, skipping insertion in model container [2018-10-27 00:13:59,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:13:47" (2/3) ... [2018-10-27 00:13:59,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20c69da5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:13:59, skipping insertion in model container [2018-10-27 00:13:59,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:13:59" (3/3) ... [2018-10-27 00:13:59,720 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label23_false-unreach-call.c [2018-10-27 00:13:59,732 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 00:13:59,749 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 00:13:59,771 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 00:13:59,830 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 00:13:59,830 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 00:13:59,830 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 00:13:59,831 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 00:13:59,831 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 00:13:59,831 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 00:13:59,831 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 00:13:59,831 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 00:13:59,869 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-27 00:13:59,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-27 00:13:59,878 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:13:59,879 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] [2018-10-27 00:13:59,882 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:13:59,888 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:13:59,889 INFO L82 PathProgramCache]: Analyzing trace with hash -777006084, now seen corresponding path program 1 times [2018-10-27 00:13:59,892 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:13:59,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:13:59,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:13:59,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:13:59,957 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:14:00,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:14:00,374 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 00:14:00,377 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:14:00,377 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 00:14:00,377 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:14:00,384 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 00:14:00,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 00:14:00,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 00:14:00,406 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-27 00:14:20,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:14:20,129 INFO L93 Difference]: Finished difference Result 2133 states and 3959 transitions. [2018-10-27 00:14:20,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 00:14:20,131 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2018-10-27 00:14:20,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:14:20,164 INFO L225 Difference]: With dead ends: 2133 [2018-10-27 00:14:20,164 INFO L226 Difference]: Without dead ends: 1523 [2018-10-27 00:14:20,176 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 [2018-10-27 00:14:20,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2018-10-27 00:14:20,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1516. [2018-10-27 00:14:20,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1516 states. [2018-10-27 00:14:20,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 2287 transitions. [2018-10-27 00:14:20,352 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 2287 transitions. Word has length 28 [2018-10-27 00:14:20,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:14:20,353 INFO L481 AbstractCegarLoop]: Abstraction has 1516 states and 2287 transitions. [2018-10-27 00:14:20,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 00:14:20,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 2287 transitions. [2018-10-27 00:14:20,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-27 00:14:20,359 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:14:20,360 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:14:20,360 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:14:20,360 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:14:20,361 INFO L82 PathProgramCache]: Analyzing trace with hash -256420302, now seen corresponding path program 1 times [2018-10-27 00:14:20,361 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:14:20,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:14:20,362 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:14:20,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:14:20,363 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:14:20,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:14:20,868 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:14:20,869 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:14:20,869 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 00:14:20,870 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 104 with the following transitions: [2018-10-27 00:14:20,872 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [834], [836], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [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] [2018-10-27 00:14:20,942 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 00:14:20,942 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 00:14:22,439 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 00:14:41,840 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 00:14:41,841 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. [2018-10-27 00:14:41,854 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:14:41,856 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 00:14:41,856 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:14:41,856 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 [2018-10-27 00:14:41,874 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:14:41,875 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 00:14:41,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:14:41,946 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 00:14:48,239 WARN L179 SmtUtils]: Spent 4.02 s on a formula simplification that was a NOOP. DAG size: 42 [2018-10-27 00:14:51,188 WARN L179 SmtUtils]: Spent 788.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 21 [2018-10-27 00:14:51,289 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:14:51,290 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 00:14:56,424 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:14:56,460 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-27 00:14:56,460 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2018-10-27 00:14:56,461 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:14:56,462 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 00:14:56,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 00:14:56,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=162, Unknown=3, NotChecked=0, Total=210 [2018-10-27 00:14:56,466 INFO L87 Difference]: Start difference. First operand 1516 states and 2287 transitions. Second operand 6 states. Received shutdown request... [2018-10-27 00:18:05,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 00:18:05,078 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 00:18:05,084 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 00:18:05,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 12:18:05 BoogieIcfgContainer [2018-10-27 00:18:05,084 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 00:18:05,085 INFO L168 Benchmark]: Toolchain (without parser) took 259025.17 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: -2.3 GB). Peak memory consumption was 356.5 MB. Max. memory is 7.1 GB. [2018-10-27 00:18:05,086 INFO L168 Benchmark]: CDTParser took 0.27 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 00:18:05,087 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1545.30 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-27 00:18:05,090 INFO L168 Benchmark]: Boogie Procedure Inliner took 536.74 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 763.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -910.7 MB). Peak memory consumption was 56.4 MB. Max. memory is 7.1 GB. [2018-10-27 00:18:05,091 INFO L168 Benchmark]: Boogie Preprocessor took 327.35 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: 29.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 7.1 GB. [2018-10-27 00:18:05,092 INFO L168 Benchmark]: RCFGBuilder took 11231.86 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: 482.1 MB). Peak memory consumption was 482.1 MB. Max. memory is 7.1 GB. [2018-10-27 00:18:05,093 INFO L168 Benchmark]: TraceAbstraction took 245375.25 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 3.7 GB in the end (delta: -2.0 GB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 00:18:05,103 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 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 1545.30 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 536.74 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 763.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -910.7 MB). Peak memory consumption was 56.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 327.35 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: 29.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11231.86 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: 482.1 MB). Peak memory consumption was 482.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 245375.25 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 3.7 GB in the end (delta: -2.0 GB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 71). Cancelled while BasicCegarLoop was constructing difference of abstraction (1516states) and FLOYD_HOARE automaton (currently 6 states, 6 states before enhancement),while ReachableStatesComputation was computing reachable states (2949 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 245.2s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 208.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 669 SDtfs, 2812 SDslu, 476 SDs, 0 SdLazy, 5251 SolverSat, 1731 SolverUnsat, 82 SolverUnknown, 0 SolverNotchecked, 204.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 220 GetRequests, 204 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 14.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1516occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 20.9s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 1 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 15.1s InterpolantComputationTime, 234 NumberOfCodeBlocks, 234 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 333 ConstructedInterpolants, 102 QuantifiedInterpolants, 394575 SizeOfPredicates, 3 NumberOfNonLiveVariables, 255 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 25/63 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown