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-d380424 [2018-10-24 21:17:52,101 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:17:52,103 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:17:52,115 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:17:52,115 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:17:52,116 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:17:52,118 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:17:52,119 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:17:52,121 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:17:52,122 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:17:52,123 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:17:52,123 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:17:52,124 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:17:52,125 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:17:52,126 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:17:52,127 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:17:52,128 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:17:52,130 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:17:52,132 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:17:52,134 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:17:52,135 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:17:52,136 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:17:52,138 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 21:17:52,145 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 21:17:52,146 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 21:17:52,147 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 21:17:52,147 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 21:17:52,148 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 21:17:52,165 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:17:52,166 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:17:52,166 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:17:52,167 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:17:52,167 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:17:52,167 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:17:52,167 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:17:52,167 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:17:52,167 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:17:52,168 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:17:52,168 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:17:52,168 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:17:52,169 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:17:52,169 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:17:52,169 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:17:52,169 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:17:52,170 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:17:52,170 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:17:52,170 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:17:52,170 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:17:52,170 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:17:52,170 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:17:52,171 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:17:52,171 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:17:52,171 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:17:52,171 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:17:52,171 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:17:52,172 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:17:52,172 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:17:52,172 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:17:52,172 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:17:52,172 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:17:52,173 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:17:52,173 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:17:52,216 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:17:52,229 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:17:52,233 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:17:52,235 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:17:52,235 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:17:52,236 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label05_true-unreach-call.c [2018-10-24 21:17:52,307 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/24c58684d/0d13031d3aeb4b04b7c46f08044ddf93/FLAGab091b718 [2018-10-24 21:17:53,096 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:17:53,097 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label05_true-unreach-call.c [2018-10-24 21:17:53,146 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/24c58684d/0d13031d3aeb4b04b7c46f08044ddf93/FLAGab091b718 [2018-10-24 21:17:53,169 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/24c58684d/0d13031d3aeb4b04b7c46f08044ddf93 [2018-10-24 21:17:53,182 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:17:53,184 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:17:53,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:17:53,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:17:53,193 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:17:53,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:17:53" (1/1) ... [2018-10-24 21:17:53,198 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@689f4e6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:17:53, skipping insertion in model container [2018-10-24 21:17:53,198 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:17:53" (1/1) ... [2018-10-24 21:17:53,209 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:17:53,364 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:17:54,589 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:17:54,596 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:17:55,245 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:17:55,283 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:17:55,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:17:55 WrapperNode [2018-10-24 21:17:55,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:17:55,285 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:17:55,285 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:17:55,286 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:17:55,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:17:55" (1/1) ... [2018-10-24 21:17:55,363 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:17:55" (1/1) ... [2018-10-24 21:17:55,803 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:17:55,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:17:55,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:17:55,804 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:17:55,817 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:17:55" (1/1) ... [2018-10-24 21:17:55,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:17:55" (1/1) ... [2018-10-24 21:17:55,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:17:55" (1/1) ... [2018-10-24 21:17:55,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:17:55" (1/1) ... [2018-10-24 21:17:55,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:17:55" (1/1) ... [2018-10-24 21:17:56,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:17:55" (1/1) ... [2018-10-24 21:17:56,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:17:55" (1/1) ... [2018-10-24 21:17:56,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:17:56,150 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:17:56,151 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:17:56,151 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:17:56,152 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:17:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:17:56,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:17:56,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:17:56,220 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 21:17:56,221 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 21:17:56,221 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 21:17:56,221 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 21:17:56,221 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:17:56,221 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:17:56,222 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:17:56,222 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:17:56,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:17:56,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:17:56,222 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:17:56,223 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:18:07,101 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:18:07,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:18:07 BoogieIcfgContainer [2018-10-24 21:18:07,105 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:18:07,106 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:18:07,106 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:18:07,109 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:18:07,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:17:53" (1/3) ... [2018-10-24 21:18:07,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@132152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:18:07, skipping insertion in model container [2018-10-24 21:18:07,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:17:55" (2/3) ... [2018-10-24 21:18:07,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@132152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:18:07, skipping insertion in model container [2018-10-24 21:18:07,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:18:07" (3/3) ... [2018-10-24 21:18:07,113 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label05_true-unreach-call.c [2018-10-24 21:18:07,124 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:18:07,134 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:18:07,152 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:18:07,199 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:18:07,199 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:18:07,199 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:18:07,199 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:18:07,199 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:18:07,200 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:18:07,200 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:18:07,200 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:18:07,246 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-24 21:18:07,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-24 21:18:07,258 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:18:07,259 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 21:18:07,262 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:18:07,268 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:18:07,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1226611092, now seen corresponding path program 1 times [2018-10-24 21:18:07,271 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:18:07,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:18:07,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:18:07,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:18:07,328 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:18:07,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:18:07,786 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:18:07,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:18:07,969 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:18:07,974 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:18:07,974 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:18:07,985 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:18:08,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:18:08,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:18:08,026 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-10-24 21:18:15,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:18:15,999 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-10-24 21:18:16,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:18:16,003 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2018-10-24 21:18:16,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:18:16,036 INFO L225 Difference]: With dead ends: 2446 [2018-10-24 21:18:16,037 INFO L226 Difference]: Without dead ends: 1604 [2018-10-24 21:18:16,046 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 21:18:16,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-10-24 21:18:16,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-10-24 21:18:16,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-10-24 21:18:16,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2969 transitions. [2018-10-24 21:18:16,213 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2969 transitions. Word has length 66 [2018-10-24 21:18:16,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:18:16,214 INFO L481 AbstractCegarLoop]: Abstraction has 1604 states and 2969 transitions. [2018-10-24 21:18:16,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:18:16,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2969 transitions. [2018-10-24 21:18:16,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-24 21:18:16,223 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:18:16,224 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 21:18:16,224 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:18:16,225 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:18:16,225 INFO L82 PathProgramCache]: Analyzing trace with hash -2035873030, now seen corresponding path program 1 times [2018-10-24 21:18:16,225 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:18:16,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:18:16,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:18:16,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:18:16,227 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:18:16,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:18:16,585 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 21:18:16,586 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:18:16,586 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:18:16,586 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:18:16,588 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:18:16,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:18:16,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:18:16,589 INFO L87 Difference]: Start difference. First operand 1604 states and 2969 transitions. Second operand 5 states. [2018-10-24 21:18:27,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:18:27,467 INFO L93 Difference]: Finished difference Result 4038 states and 7427 transitions. [2018-10-24 21:18:27,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:18:27,470 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2018-10-24 21:18:27,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:18:27,486 INFO L225 Difference]: With dead ends: 4038 [2018-10-24 21:18:27,487 INFO L226 Difference]: Without dead ends: 2440 [2018-10-24 21:18:27,493 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 21:18:27,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2440 states. [2018-10-24 21:18:27,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2440 to 2413. [2018-10-24 21:18:27,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2413 states. [2018-10-24 21:18:27,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2413 states to 2413 states and 4141 transitions. [2018-10-24 21:18:27,581 INFO L78 Accepts]: Start accepts. Automaton has 2413 states and 4141 transitions. Word has length 140 [2018-10-24 21:18:27,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:18:27,581 INFO L481 AbstractCegarLoop]: Abstraction has 2413 states and 4141 transitions. [2018-10-24 21:18:27,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:18:27,582 INFO L276 IsEmpty]: Start isEmpty. Operand 2413 states and 4141 transitions. [2018-10-24 21:18:27,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-24 21:18:27,595 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:18:27,596 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 21:18:27,596 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:18:27,596 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:18:27,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1332120426, now seen corresponding path program 1 times [2018-10-24 21:18:27,598 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:18:27,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:18:27,600 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:18:27,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:18:27,600 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:18:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:18:27,858 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 21:18:27,859 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:18:27,859 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:18:27,860 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 143 with the following transitions: [2018-10-24 21:18:27,862 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 21:18:27,932 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:18:27,932 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:18:32,659 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:18:32,661 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 21:18:32,708 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:18:32,708 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:18:35,254 INFO L232 lantSequenceWeakener]: Weakened 53 states. On average, predicates are now at 79.56% of their original sizes. [2018-10-24 21:18:35,255 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:18:48,939 INFO L413 sIntCurrentIteration]: We have 141 unified AI predicates [2018-10-24 21:18:48,939 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:18:48,940 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:18:48,940 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [5] total 21 [2018-10-24 21:18:48,940 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:18:48,941 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-24 21:18:48,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-24 21:18:48,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2018-10-24 21:18:48,942 INFO L87 Difference]: Start difference. First operand 2413 states and 4141 transitions. Second operand 18 states. [2018-10-24 21:19:16,913 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 21:21:46,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-24 21:21:46,282 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:21:46,288 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:21:46,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:21:46 BoogieIcfgContainer [2018-10-24 21:21:46,289 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:21:46,290 INFO L168 Benchmark]: Toolchain (without parser) took 233107.00 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-10-24 21:21:46,291 INFO L168 Benchmark]: CDTParser took 0.20 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 21:21:46,292 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2098.96 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 21:21:46,293 INFO L168 Benchmark]: Boogie Procedure Inliner took 518.53 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 802.2 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. [2018-10-24 21:21:46,294 INFO L168 Benchmark]: Boogie Preprocessor took 346.04 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 36.1 MB). Peak memory consumption was 36.1 MB. Max. memory is 7.1 GB. [2018-10-24 21:21:46,295 INFO L168 Benchmark]: RCFGBuilder took 10954.17 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 172.5 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -187.2 MB). Peak memory consumption was 667.7 MB. Max. memory is 7.1 GB. [2018-10-24 21:21:46,296 INFO L168 Benchmark]: TraceAbstraction took 219183.42 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.4 GB in the beginning and 3.1 GB in the end (delta: -659.8 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-24 21:21:46,301 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2098.96 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 518.53 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 802.2 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 346.04 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 36.1 MB). Peak memory consumption was 36.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10954.17 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 172.5 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -187.2 MB). Peak memory consumption was 667.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 219183.42 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.4 GB in the beginning and 3.1 GB in the end (delta: -659.8 MB). Peak memory consumption was 1.1 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 (2008 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 219.1s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 196.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 534 SDtfs, 7149 SDslu, 400 SDs, 0 SdLazy, 8435 SolverSat, 2598 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 102.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 161 GetRequests, 126 SyntacticMatches, 6 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 16.7s 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, 4.8s 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, 0.8s 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