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_label21_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 22:13:31,135 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 22:13:31,137 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 22:13:31,150 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 22:13:31,151 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 22:13:31,152 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 22:13:31,153 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 22:13:31,155 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 22:13:31,157 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 22:13:31,158 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 22:13:31,159 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 22:13:31,159 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 22:13:31,160 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 22:13:31,161 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 22:13:31,162 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 22:13:31,163 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 22:13:31,164 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 22:13:31,166 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 22:13:31,168 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 22:13:31,170 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 22:13:31,171 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 22:13:31,172 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 22:13:31,175 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 22:13:31,184 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 [2018-10-23 22:13:31,199 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 22:13:31,200 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 22:13:31,201 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 22:13:31,201 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 22:13:31,201 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 22:13:31,201 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 22:13:31,202 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 22:13:31,202 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 22:13:31,202 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 22:13:31,202 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 22:13:31,202 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 22:13:31,202 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 22:13:31,203 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 22:13:31,203 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 22:13:31,204 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 22:13:31,204 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 22:13:31,204 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 22:13:31,204 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 22:13:31,204 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 22:13:31,205 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 22:13:31,205 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 22:13:31,205 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 22:13:31,205 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 22:13:31,205 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 22:13:31,206 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 22:13:31,206 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 22:13:31,206 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 22:13:31,206 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 22:13:31,206 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 22:13:31,207 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 22:13:31,207 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 22:13:31,207 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 22:13:31,207 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 22:13:31,207 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 22:13:31,255 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 22:13:31,268 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 22:13:31,272 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 22:13:31,273 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 22:13:31,274 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 22:13:31,275 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label21_false-unreach-call.c [2018-10-23 22:13:31,336 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c625d373c/f2eba0ee93d24f138a81c3f11962bad6/FLAG8dbd927bc [2018-10-23 22:13:32,135 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 22:13:32,136 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label21_false-unreach-call.c [2018-10-23 22:13:32,176 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c625d373c/f2eba0ee93d24f138a81c3f11962bad6/FLAG8dbd927bc [2018-10-23 22:13:32,202 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c625d373c/f2eba0ee93d24f138a81c3f11962bad6 [2018-10-23 22:13:32,216 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 22:13:32,219 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 22:13:32,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 22:13:32,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 22:13:32,230 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 22:13:32,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:13:32" (1/1) ... [2018-10-23 22:13:32,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61da0d04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:32, skipping insertion in model container [2018-10-23 22:13:32,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:13:32" (1/1) ... [2018-10-23 22:13:32,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 22:13:32,428 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 22:13:33,692 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:13:33,697 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 22:13:34,375 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:13:34,415 INFO L193 MainTranslator]: Completed translation [2018-10-23 22:13:34,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:34 WrapperNode [2018-10-23 22:13:34,416 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 22:13:34,417 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 22:13:34,417 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 22:13:34,417 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 22:13:34,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:34" (1/1) ... [2018-10-23 22:13:34,508 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:34" (1/1) ... [2018-10-23 22:13:35,025 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 22:13:35,026 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 22:13:35,026 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 22:13:35,027 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 22:13:35,039 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:34" (1/1) ... [2018-10-23 22:13:35,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:34" (1/1) ... [2018-10-23 22:13:35,073 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:34" (1/1) ... [2018-10-23 22:13:35,073 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:34" (1/1) ... [2018-10-23 22:13:35,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:34" (1/1) ... [2018-10-23 22:13:35,270 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:34" (1/1) ... [2018-10-23 22:13:35,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:34" (1/1) ... [2018-10-23 22:13:35,393 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 22:13:35,394 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 22:13:35,394 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 22:13:35,395 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 22:13:35,396 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:34" (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 [2018-10-23 22:13:35,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 22:13:35,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 22:13:35,478 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-23 22:13:35,478 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-23 22:13:35,478 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-23 22:13:35,479 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-23 22:13:35,479 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-23 22:13:35,479 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-23 22:13:35,479 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 22:13:35,479 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 22:13:35,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 22:13:35,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 22:13:35,481 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 22:13:35,482 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 22:13:48,093 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 22:13:48,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:13:48 BoogieIcfgContainer [2018-10-23 22:13:48,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 22:13:48,096 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 22:13:48,096 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 22:13:48,099 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 22:13:48,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:13:32" (1/3) ... [2018-10-23 22:13:48,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c608146 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:13:48, skipping insertion in model container [2018-10-23 22:13:48,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:13:34" (2/3) ... [2018-10-23 22:13:48,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c608146 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:13:48, skipping insertion in model container [2018-10-23 22:13:48,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:13:48" (3/3) ... [2018-10-23 22:13:48,103 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label21_false-unreach-call.c [2018-10-23 22:13:48,114 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 22:13:48,124 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 22:13:48,144 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 22:13:48,193 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 22:13:48,194 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 22:13:48,194 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 22:13:48,194 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 22:13:48,194 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 22:13:48,195 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 22:13:48,195 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 22:13:48,195 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 22:13:48,247 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-23 22:13:48,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-23 22:13:48,259 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:13:48,260 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] [2018-10-23 22:13:48,263 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:13:48,268 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:13:48,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1935486797, now seen corresponding path program 1 times [2018-10-23 22:13:48,270 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:13:48,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:13:48,322 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:13:48,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:13:48,322 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:13:48,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:13:48,700 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:13:48,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:13:48,820 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:13:48,821 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 22:13:48,821 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:13:48,829 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 22:13:48,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 22:13:48,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:13:48,850 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-10-23 22:13:58,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:13:58,124 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-10-23 22:13:58,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 22:13:58,127 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2018-10-23 22:13:58,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:13:58,167 INFO L225 Difference]: With dead ends: 2446 [2018-10-23 22:13:58,167 INFO L226 Difference]: Without dead ends: 1604 [2018-10-23 22:13:58,179 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 [2018-10-23 22:13:58,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-10-23 22:13:58,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-10-23 22:13:58,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-10-23 22:13:58,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2969 transitions. [2018-10-23 22:13:58,349 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2969 transitions. Word has length 29 [2018-10-23 22:13:58,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:13:58,350 INFO L481 AbstractCegarLoop]: Abstraction has 1604 states and 2969 transitions. [2018-10-23 22:13:58,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 22:13:58,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2969 transitions. [2018-10-23 22:13:58,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-23 22:13:58,356 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:13:58,357 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:13:58,357 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:13:58,357 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:13:58,357 INFO L82 PathProgramCache]: Analyzing trace with hash 198503084, now seen corresponding path program 1 times [2018-10-23 22:13:58,358 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:13:58,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:13:58,359 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:13:58,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:13:58,360 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:13:58,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:13:58,678 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:13:58,678 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:13:58,678 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 22:13:58,678 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:13:58,681 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 22:13:58,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 22:13:58,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-23 22:13:58,682 INFO L87 Difference]: Start difference. First operand 1604 states and 2969 transitions. Second operand 5 states. [2018-10-23 22:14:10,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:14:10,549 INFO L93 Difference]: Finished difference Result 4038 states and 7427 transitions. [2018-10-23 22:14:10,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:14:10,552 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2018-10-23 22:14:10,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:14:10,570 INFO L225 Difference]: With dead ends: 4038 [2018-10-23 22:14:10,570 INFO L226 Difference]: Without dead ends: 2440 [2018-10-23 22:14:10,576 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 [2018-10-23 22:14:10,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2440 states. [2018-10-23 22:14:10,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2440 to 2413. [2018-10-23 22:14:10,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2413 states. [2018-10-23 22:14:10,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2413 states to 2413 states and 4141 transitions. [2018-10-23 22:14:10,663 INFO L78 Accepts]: Start accepts. Automaton has 2413 states and 4141 transitions. Word has length 103 [2018-10-23 22:14:10,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:14:10,663 INFO L481 AbstractCegarLoop]: Abstraction has 2413 states and 4141 transitions. [2018-10-23 22:14:10,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 22:14:10,664 INFO L276 IsEmpty]: Start isEmpty. Operand 2413 states and 4141 transitions. [2018-10-23 22:14:10,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-23 22:14:10,671 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:14:10,671 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:14:10,672 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:14:10,672 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:14:10,673 INFO L82 PathProgramCache]: Analyzing trace with hash -466340912, now seen corresponding path program 1 times [2018-10-23 22:14:10,673 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:14:10,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:14:10,675 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:14:10,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:14:10,675 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:14:10,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:14:10,913 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-23 22:14:10,914 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:14:10,914 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:14:10,915 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 106 with the following transitions: [2018-10-23 22:14:10,917 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [1999], [2001], [2004], [2012], [2020], [2028], [2036], [2044], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [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] [2018-10-23 22:14:10,985 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:14:10,986 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:14:16,284 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:14:16,286 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. [2018-10-23 22:14:16,346 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:14:16,346 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:14:18,513 INFO L232 lantSequenceWeakener]: Weakened 16 states. On average, predicates are now at 80.47% of their original sizes. [2018-10-23 22:14:18,514 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:14:30,445 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:14:30,446 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:14:30,447 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [5] total 19 [2018-10-23 22:14:30,447 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:14:30,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-23 22:14:30,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-23 22:14:30,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2018-10-23 22:14:30,448 INFO L87 Difference]: Start difference. First operand 2413 states and 4141 transitions. Second operand 16 states. [2018-10-23 22:15:08,111 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-23 22:17:20,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-23 22:17:20,171 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 22:17:20,177 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 22:17:20,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:17:20 BoogieIcfgContainer [2018-10-23 22:17:20,177 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 22:17:20,178 INFO L168 Benchmark]: Toolchain (without parser) took 227961.29 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 2.2 GB in the end (delta: -782.3 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-23 22:17:20,180 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-10-23 22:17:20,180 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2196.21 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. [2018-10-23 22:17:20,181 INFO L168 Benchmark]: Boogie Procedure Inliner took 608.94 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 772.3 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 68.8 MB. Max. memory is 7.1 GB. [2018-10-23 22:17:20,182 INFO L168 Benchmark]: Boogie Preprocessor took 367.52 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: 39.1 MB). Peak memory consumption was 39.1 MB. Max. memory is 7.1 GB. [2018-10-23 22:17:20,183 INFO L168 Benchmark]: RCFGBuilder took 12700.46 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.5 GB in the end (delta: 654.7 MB). Peak memory consumption was 654.7 MB. Max. memory is 7.1 GB. [2018-10-23 22:17:20,184 INFO L168 Benchmark]: TraceAbstraction took 212081.58 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: -658.2 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-23 22:17:20,190 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2196.21 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 608.94 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 772.3 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 68.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 367.52 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: 39.1 MB). Peak memory consumption was 39.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12700.46 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.5 GB in the end (delta: 654.7 MB). Peak memory consumption was 654.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 212081.58 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: -658.2 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: 78]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 78). Cancelled while BasicCegarLoop was constructing difference of abstraction (2413states) and FLOYD_HOARE automaton (currently 16 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (1297 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 211.9s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 190.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 418 SDtfs, 5575 SDslu, 279 SDs, 0 SdLazy, 8022 SolverSat, 2333 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 104.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 124 GetRequests, 91 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 15.1s 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, 0.9914349112426036 AbsIntWeakeningRatio, 0.20192307692307693 AbsIntAvgWeakeningVarsNumRemoved, 408.3942307692308 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 2 MinimizatonAttempts, 27 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 237 NumberOfCodeBlocks, 237 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 234 ConstructedInterpolants, 0 QuantifiedInterpolants, 65048 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 26/44 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown