java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label05_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 01:13:16,272 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 01:13:16,275 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 01:13:16,290 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 01:13:16,292 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 01:13:16,295 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 01:13:16,296 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 01:13:16,299 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 01:13:16,309 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 01:13:16,310 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 01:13:16,311 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 01:13:16,311 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 01:13:16,312 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 01:13:16,315 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 01:13:16,317 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 01:13:16,318 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 01:13:16,318 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 01:13:16,320 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 01:13:16,322 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 01:13:16,323 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 01:13:16,325 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 01:13:16,326 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 01:13:16,328 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 01:13:16,336 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 01:13:16,337 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 01:13:16,338 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 01:13:16,340 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 01:13:16,340 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 01:13:16,369 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 01:13:16,369 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 01:13:16,370 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 01:13:16,370 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 01:13:16,370 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 01:13:16,371 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 01:13:16,371 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 01:13:16,371 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 01:13:16,371 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 01:13:16,371 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 01:13:16,372 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 01:13:16,372 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 01:13:16,373 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 01:13:16,373 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 01:13:16,373 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 01:13:16,373 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 01:13:16,374 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 01:13:16,374 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 01:13:16,374 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 01:13:16,374 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 01:13:16,374 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 01:13:16,375 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 01:13:16,375 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 01:13:16,375 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 01:13:16,375 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 01:13:16,375 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 01:13:16,376 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 01:13:16,376 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 01:13:16,376 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 01:13:16,376 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 01:13:16,376 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 01:13:16,377 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 01:13:16,377 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 01:13:16,377 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 01:13:16,440 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 01:13:16,453 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 01:13:16,458 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 01:13:16,460 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 01:13:16,461 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 01:13:16,462 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label05_true-unreach-call.c [2018-10-24 01:13:16,529 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/697ef22c4/c7a26ec9af9e4601b5308358e83326dd/FLAGabe31c81f [2018-10-24 01:13:17,297 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 01:13:17,298 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label05_true-unreach-call.c [2018-10-24 01:13:17,326 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/697ef22c4/c7a26ec9af9e4601b5308358e83326dd/FLAGabe31c81f [2018-10-24 01:13:17,342 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/697ef22c4/c7a26ec9af9e4601b5308358e83326dd [2018-10-24 01:13:17,354 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 01:13:17,356 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 01:13:17,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 01:13:17,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 01:13:17,362 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 01:13:17,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:13:17" (1/1) ... [2018-10-24 01:13:17,367 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cf5b06d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:13:17, skipping insertion in model container [2018-10-24 01:13:17,367 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:13:17" (1/1) ... [2018-10-24 01:13:17,379 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 01:13:17,545 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 01:13:18,974 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:13:18,980 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 01:13:19,603 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:13:19,641 INFO L193 MainTranslator]: Completed translation [2018-10-24 01:13:19,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:13:19 WrapperNode [2018-10-24 01:13:19,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 01:13:19,642 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 01:13:19,643 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 01:13:19,643 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 01:13:19,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:13:19" (1/1) ... [2018-10-24 01:13:19,731 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:13:19" (1/1) ... [2018-10-24 01:13:20,202 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 01:13:20,203 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 01:13:20,203 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 01:13:20,203 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 01:13:20,214 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:13:19" (1/1) ... [2018-10-24 01:13:20,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:13:19" (1/1) ... [2018-10-24 01:13:20,237 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:13:19" (1/1) ... [2018-10-24 01:13:20,237 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:13:19" (1/1) ... [2018-10-24 01:13:20,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:13:19" (1/1) ... [2018-10-24 01:13:20,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:13:19" (1/1) ... [2018-10-24 01:13:20,427 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:13:19" (1/1) ... [2018-10-24 01:13:20,458 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 01:13:20,459 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 01:13:20,459 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 01:13:20,459 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 01:13:20,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:13:19" (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 01:13:20,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 01:13:20,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 01:13:20,532 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 01:13:20,532 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 01:13:20,532 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 01:13:20,532 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 01:13:20,532 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 01:13:20,533 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 01:13:20,533 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 01:13:20,533 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 01:13:20,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 01:13:20,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 01:13:20,534 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 01:13:20,535 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 01:13:30,834 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 01:13:30,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:13:30 BoogieIcfgContainer [2018-10-24 01:13:30,835 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 01:13:30,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 01:13:30,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 01:13:30,840 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 01:13:30,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:13:17" (1/3) ... [2018-10-24 01:13:30,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4843f9d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:13:30, skipping insertion in model container [2018-10-24 01:13:30,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:13:19" (2/3) ... [2018-10-24 01:13:30,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4843f9d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:13:30, skipping insertion in model container [2018-10-24 01:13:30,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:13:30" (3/3) ... [2018-10-24 01:13:30,844 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label05_true-unreach-call.c [2018-10-24 01:13:30,854 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 01:13:30,869 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 01:13:30,887 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 01:13:30,951 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 01:13:30,952 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 01:13:30,952 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 01:13:30,952 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 01:13:30,952 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 01:13:30,952 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 01:13:30,953 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 01:13:30,953 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 01:13:31,013 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-24 01:13:31,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-24 01:13:31,024 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:13:31,025 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] [2018-10-24 01:13:31,147 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:13:31,166 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:13:31,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1226611092, now seen corresponding path program 1 times [2018-10-24 01:13:31,169 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:13:31,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:13:31,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:13:31,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:13:31,231 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:13:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:13:31,741 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:13:31,842 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 01:13:31,845 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:13:31,846 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 01:13:31,846 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:13:31,853 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 01:13:31,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 01:13:31,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 01:13:31,874 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-10-24 01:13:39,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:13:39,687 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-10-24 01:13:39,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 01:13:39,689 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2018-10-24 01:13:39,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:13:39,722 INFO L225 Difference]: With dead ends: 2446 [2018-10-24 01:13:39,722 INFO L226 Difference]: Without dead ends: 1604 [2018-10-24 01:13:39,735 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 01:13:39,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-10-24 01:13:39,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-10-24 01:13:39,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-10-24 01:13:39,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2969 transitions. [2018-10-24 01:13:39,892 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2969 transitions. Word has length 66 [2018-10-24 01:13:39,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:13:39,894 INFO L481 AbstractCegarLoop]: Abstraction has 1604 states and 2969 transitions. [2018-10-24 01:13:39,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 01:13:39,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2969 transitions. [2018-10-24 01:13:39,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-24 01:13:39,908 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:13:39,910 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:13:39,910 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:13:39,911 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:13:39,911 INFO L82 PathProgramCache]: Analyzing trace with hash -2035873030, now seen corresponding path program 1 times [2018-10-24 01:13:39,911 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:13:39,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:13:39,912 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:13:39,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:13:39,913 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:13:40,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:13:40,230 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:13:40,230 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:13:40,230 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 01:13:40,230 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:13:40,233 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 01:13:40,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 01:13:40,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 01:13:40,234 INFO L87 Difference]: Start difference. First operand 1604 states and 2969 transitions. Second operand 5 states. [2018-10-24 01:13:51,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:13:51,928 INFO L93 Difference]: Finished difference Result 4038 states and 7427 transitions. [2018-10-24 01:13:51,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:13:51,930 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2018-10-24 01:13:51,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:13:51,946 INFO L225 Difference]: With dead ends: 4038 [2018-10-24 01:13:51,946 INFO L226 Difference]: Without dead ends: 2440 [2018-10-24 01:13:51,952 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 01:13:51,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2440 states. [2018-10-24 01:13:52,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2440 to 2413. [2018-10-24 01:13:52,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2413 states. [2018-10-24 01:13:52,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2413 states to 2413 states and 4141 transitions. [2018-10-24 01:13:52,025 INFO L78 Accepts]: Start accepts. Automaton has 2413 states and 4141 transitions. Word has length 140 [2018-10-24 01:13:52,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:13:52,026 INFO L481 AbstractCegarLoop]: Abstraction has 2413 states and 4141 transitions. [2018-10-24 01:13:52,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 01:13:52,026 INFO L276 IsEmpty]: Start isEmpty. Operand 2413 states and 4141 transitions. [2018-10-24 01:13:52,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-24 01:13:52,030 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:13:52,030 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 01:13:52,031 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:13:52,031 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:13:52,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1332120426, now seen corresponding path program 1 times [2018-10-24 01:13:52,031 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:13:52,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:13:52,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:13:52,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:13:52,033 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:13:52,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:13:52,244 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-24 01:13:52,244 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:13:52,244 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:13:52,245 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 143 with the following transitions: [2018-10-24 01:13:52,247 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2179], [2187], [2195], [2203], [2211], [2219], [2227], [2235], [2243], [2251], [2259], [2267], [2275], [2283], [2291], [2295], [2297], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2384], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-24 01:13:52,323 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:13:52,323 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:13:57,609 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:13:57,611 INFO L272 AbstractInterpreter]: Visited 83 different actions 159 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 01:13:57,663 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:13:57,664 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:14:00,733 INFO L232 lantSequenceWeakener]: Weakened 53 states. On average, predicates are now at 79.56% of their original sizes. [2018-10-24 01:14:00,733 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:14:14,224 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:14:14,225 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:14:14,226 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [5] total 21 [2018-10-24 01:14:14,226 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:14:14,227 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-24 01:14:14,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-24 01:14:14,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2018-10-24 01:14:14,227 INFO L87 Difference]: Start difference. First operand 2413 states and 4141 transitions. Second operand 18 states. [2018-10-24 01:14:41,044 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 01:17:04,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-24 01:17:04,945 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 01:17:04,951 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 01:17:04,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:17:04 BoogieIcfgContainer [2018-10-24 01:17:04,952 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 01:17:04,953 INFO L168 Benchmark]: Toolchain (without parser) took 227597.79 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -845.8 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-24 01:17:04,954 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. [2018-10-24 01:17:04,955 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2284.79 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-24 01:17:04,956 INFO L168 Benchmark]: Boogie Procedure Inliner took 559.97 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 785.4 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. [2018-10-24 01:17:04,957 INFO L168 Benchmark]: Boogie Preprocessor took 255.70 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: 37.8 MB). Peak memory consumption was 37.8 MB. Max. memory is 7.1 GB. [2018-10-24 01:17:04,958 INFO L168 Benchmark]: RCFGBuilder took 10376.49 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 650.0 MB). Peak memory consumption was 650.0 MB. Max. memory is 7.1 GB. [2018-10-24 01:17:04,959 INFO L168 Benchmark]: TraceAbstraction took 214115.58 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: -711.7 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-24 01:17:04,964 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 2284.79 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 559.97 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 785.4 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 255.70 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: 37.8 MB). Peak memory consumption was 37.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10376.49 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 650.0 MB). Peak memory consumption was 650.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 214115.58 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: -711.7 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 189]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 189). Cancelled while BasicCegarLoop was constructing difference of abstraction (2413states) and FLOYD_HOARE automaton (currently 16 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (1904 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 214.0s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 190.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 515 SDtfs, 7032 SDslu, 382 SDs, 0 SdLazy, 8350 SolverSat, 2575 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 99.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 161 GetRequests, 126 SyntacticMatches, 6 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 16.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2413occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 5.4s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9936824877250408 AbsIntWeakeningRatio, 0.14893617021276595 AbsIntAvgWeakeningVarsNumRemoved, 460.2340425531915 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 2 MinimizatonAttempts, 27 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 348 NumberOfCodeBlocks, 348 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 345 ConstructedInterpolants, 0 QuantifiedInterpolants, 121658 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 63/118 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown