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/Problem13_label00_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 01:22:08,065 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 01:22:08,067 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 01:22:08,082 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 01:22:08,083 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 01:22:08,084 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 01:22:08,088 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 01:22:08,090 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 01:22:08,093 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 01:22:08,094 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 01:22:08,097 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 01:22:08,097 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 01:22:08,099 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 01:22:08,100 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 01:22:08,109 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 01:22:08,110 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 01:22:08,111 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 01:22:08,113 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 01:22:08,118 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 01:22:08,123 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 01:22:08,124 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 01:22:08,127 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 01:22:08,133 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 01:22:08,145 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 01:22:08,145 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 01:22:08,148 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 01:22:08,149 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 01:22:08,149 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 01:22:08,177 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 01:22:08,178 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 01:22:08,178 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 01:22:08,179 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 01:22:08,179 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 01:22:08,179 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 01:22:08,179 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 01:22:08,180 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 01:22:08,180 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 01:22:08,181 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 01:22:08,181 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 01:22:08,181 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 01:22:08,182 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 01:22:08,182 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 01:22:08,182 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 01:22:08,182 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 01:22:08,183 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 01:22:08,183 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 01:22:08,183 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 01:22:08,183 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 01:22:08,183 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 01:22:08,184 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 01:22:08,184 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 01:22:08,184 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 01:22:08,184 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 01:22:08,184 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 01:22:08,186 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 01:22:08,187 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 01:22:08,187 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 01:22:08,187 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 01:22:08,187 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 01:22:08,187 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 01:22:08,188 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 01:22:08,188 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 01:22:08,257 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 01:22:08,274 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 01:22:08,279 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 01:22:08,281 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 01:22:08,282 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 01:22:08,282 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label00_true-unreach-call.c [2018-10-24 01:22:08,354 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/776a5afb5/c5c5a01200ae4567be73caf0732642b6/FLAG17df5c40c [2018-10-24 01:22:09,194 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 01:22:09,196 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label00_true-unreach-call.c [2018-10-24 01:22:09,233 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/776a5afb5/c5c5a01200ae4567be73caf0732642b6/FLAG17df5c40c [2018-10-24 01:22:09,256 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/776a5afb5/c5c5a01200ae4567be73caf0732642b6 [2018-10-24 01:22:09,271 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 01:22:09,273 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 01:22:09,275 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 01:22:09,276 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 01:22:09,281 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 01:22:09,282 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:22:09" (1/1) ... [2018-10-24 01:22:09,285 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3732e022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:22:09, skipping insertion in model container [2018-10-24 01:22:09,286 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:22:09" (1/1) ... [2018-10-24 01:22:09,298 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 01:22:09,508 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 01:22:11,027 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:22:11,033 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 01:22:11,756 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:22:11,801 INFO L193 MainTranslator]: Completed translation [2018-10-24 01:22:11,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:22:11 WrapperNode [2018-10-24 01:22:11,802 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 01:22:11,803 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 01:22:11,804 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 01:22:11,804 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 01:22:11,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:22:11" (1/1) ... [2018-10-24 01:22:11,905 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:22:11" (1/1) ... [2018-10-24 01:22:12,375 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 01:22:12,376 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 01:22:12,376 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 01:22:12,376 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 01:22:12,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:22:11" (1/1) ... [2018-10-24 01:22:12,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:22:11" (1/1) ... [2018-10-24 01:22:12,427 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:22:11" (1/1) ... [2018-10-24 01:22:12,427 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:22:11" (1/1) ... [2018-10-24 01:22:12,572 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:22:11" (1/1) ... [2018-10-24 01:22:12,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:22:11" (1/1) ... [2018-10-24 01:22:12,684 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:22:11" (1/1) ... [2018-10-24 01:22:12,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 01:22:12,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 01:22:12,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 01:22:12,765 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 01:22:12,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:22:11" (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 01:22:12,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 01:22:12,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 01:22:12,839 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 01:22:12,840 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 01:22:12,840 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 01:22:12,840 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 01:22:12,840 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 01:22:12,840 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 01:22:12,840 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 01:22:12,841 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 01:22:12,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 01:22:12,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 01:22:12,841 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 01:22:12,842 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 01:22:24,095 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 01:22:24,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:22:24 BoogieIcfgContainer [2018-10-24 01:22:24,096 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 01:22:24,099 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 01:22:24,099 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 01:22:24,102 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 01:22:24,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:22:09" (1/3) ... [2018-10-24 01:22:24,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@350a360a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:22:24, skipping insertion in model container [2018-10-24 01:22:24,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:22:11" (2/3) ... [2018-10-24 01:22:24,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@350a360a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:22:24, skipping insertion in model container [2018-10-24 01:22:24,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:22:24" (3/3) ... [2018-10-24 01:22:24,106 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label00_true-unreach-call.c [2018-10-24 01:22:24,117 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 01:22:24,132 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 01:22:24,150 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 01:22:24,208 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 01:22:24,209 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 01:22:24,209 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 01:22:24,209 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 01:22:24,209 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 01:22:24,209 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 01:22:24,210 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 01:22:24,210 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 01:22:24,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-24 01:22:24,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-24 01:22:24,279 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:22:24,280 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] [2018-10-24 01:22:24,283 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:22:24,288 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:22:24,289 INFO L82 PathProgramCache]: Analyzing trace with hash -920036068, now seen corresponding path program 1 times [2018-10-24 01:22:24,291 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:22:24,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:22:24,347 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:22:24,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:22:24,347 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:22:24,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:22:24,834 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-24 01:22:24,844 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 01:22:24,846 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:22:24,847 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 01:22:24,847 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:22:24,854 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 01:22:24,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 01:22:24,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:22:24,875 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-10-24 01:22:40,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:22:40,764 INFO L93 Difference]: Finished difference Result 3968 states and 7392 transitions. [2018-10-24 01:22:40,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 01:22:40,770 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2018-10-24 01:22:40,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:22:40,824 INFO L225 Difference]: With dead ends: 3968 [2018-10-24 01:22:40,825 INFO L226 Difference]: Without dead ends: 2842 [2018-10-24 01:22:40,837 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:22:40,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2018-10-24 01:22:40,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1981. [2018-10-24 01:22:41,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2018-10-24 01:22:41,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 3456 transitions. [2018-10-24 01:22:41,016 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 3456 transitions. Word has length 44 [2018-10-24 01:22:41,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:22:41,016 INFO L481 AbstractCegarLoop]: Abstraction has 1981 states and 3456 transitions. [2018-10-24 01:22:41,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 01:22:41,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 3456 transitions. [2018-10-24 01:22:41,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-24 01:22:41,028 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:22:41,028 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, 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 01:22:41,029 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:22:41,032 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:22:41,032 INFO L82 PathProgramCache]: Analyzing trace with hash 673844312, now seen corresponding path program 1 times [2018-10-24 01:22:41,032 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:22:41,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:22:41,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:22:41,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:22:41,034 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:22:41,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:22:41,381 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:22:41,381 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:22:41,381 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 01:22:41,382 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:22:41,385 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 01:22:41,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 01:22:41,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 01:22:41,386 INFO L87 Difference]: Start difference. First operand 1981 states and 3456 transitions. Second operand 5 states. [2018-10-24 01:22:56,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:22:56,881 INFO L93 Difference]: Finished difference Result 5673 states and 10081 transitions. [2018-10-24 01:22:56,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:22:56,884 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2018-10-24 01:22:56,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:22:56,910 INFO L225 Difference]: With dead ends: 5673 [2018-10-24 01:22:56,911 INFO L226 Difference]: Without dead ends: 3698 [2018-10-24 01:22:56,919 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 01:22:56,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2018-10-24 01:22:57,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3687. [2018-10-24 01:22:57,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3687 states. [2018-10-24 01:22:57,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3687 states to 3687 states and 5870 transitions. [2018-10-24 01:22:57,030 INFO L78 Accepts]: Start accepts. Automaton has 3687 states and 5870 transitions. Word has length 114 [2018-10-24 01:22:57,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:22:57,031 INFO L481 AbstractCegarLoop]: Abstraction has 3687 states and 5870 transitions. [2018-10-24 01:22:57,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 01:22:57,031 INFO L276 IsEmpty]: Start isEmpty. Operand 3687 states and 5870 transitions. [2018-10-24 01:22:57,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-24 01:22:57,035 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:22:57,035 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, 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 01:22:57,036 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:22:57,036 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:22:57,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1072616972, now seen corresponding path program 1 times [2018-10-24 01:22:57,036 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:22:57,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:22:57,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:22:57,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:22:57,038 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:22:57,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:22:57,237 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:22:57,238 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:22:57,238 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 01:22:57,238 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:22:57,239 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 01:22:57,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 01:22:57,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 01:22:57,240 INFO L87 Difference]: Start difference. First operand 3687 states and 5870 transitions. Second operand 5 states. [2018-10-24 01:23:14,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:23:14,825 INFO L93 Difference]: Finished difference Result 10963 states and 17865 transitions. [2018-10-24 01:23:14,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 01:23:14,826 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2018-10-24 01:23:14,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:23:14,873 INFO L225 Difference]: With dead ends: 10963 [2018-10-24 01:23:14,873 INFO L226 Difference]: Without dead ends: 7282 [2018-10-24 01:23:14,889 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 01:23:14,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7282 states. [2018-10-24 01:23:15,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7282 to 7175. [2018-10-24 01:23:15,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7175 states. [2018-10-24 01:23:15,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7175 states to 7175 states and 10520 transitions. [2018-10-24 01:23:15,116 INFO L78 Accepts]: Start accepts. Automaton has 7175 states and 10520 transitions. Word has length 116 [2018-10-24 01:23:15,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:23:15,117 INFO L481 AbstractCegarLoop]: Abstraction has 7175 states and 10520 transitions. [2018-10-24 01:23:15,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 01:23:15,118 INFO L276 IsEmpty]: Start isEmpty. Operand 7175 states and 10520 transitions. [2018-10-24 01:23:15,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-10-24 01:23:15,125 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:23:15,126 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, 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, 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 01:23:15,126 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:23:15,126 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:23:15,128 INFO L82 PathProgramCache]: Analyzing trace with hash -2080422020, now seen corresponding path program 1 times [2018-10-24 01:23:15,128 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:23:15,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:23:15,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:23:15,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:23:15,130 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:23:15,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:23:15,627 WARN L179 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 10 [2018-10-24 01:23:15,824 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-24 01:23:15,980 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:23:15,980 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:23:15,981 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:23:15,981 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:23:15,981 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:23:15,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:23:15,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:23:15,982 INFO L87 Difference]: Start difference. First operand 7175 states and 10520 transitions. Second operand 6 states. [2018-10-24 01:23:45,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:23:45,429 INFO L93 Difference]: Finished difference Result 18113 states and 26146 transitions. [2018-10-24 01:23:45,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 01:23:45,431 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2018-10-24 01:23:45,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:23:45,485 INFO L225 Difference]: With dead ends: 18113 [2018-10-24 01:23:45,486 INFO L226 Difference]: Without dead ends: 10944 [2018-10-24 01:23:45,519 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-10-24 01:23:45,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10944 states. [2018-10-24 01:23:45,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10944 to 10597. [2018-10-24 01:23:45,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10597 states. [2018-10-24 01:23:45,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10597 states to 10597 states and 14744 transitions. [2018-10-24 01:23:45,771 INFO L78 Accepts]: Start accepts. Automaton has 10597 states and 14744 transitions. Word has length 160 [2018-10-24 01:23:45,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:23:45,772 INFO L481 AbstractCegarLoop]: Abstraction has 10597 states and 14744 transitions. [2018-10-24 01:23:45,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:23:45,772 INFO L276 IsEmpty]: Start isEmpty. Operand 10597 states and 14744 transitions. [2018-10-24 01:23:45,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-24 01:23:45,776 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:23:45,776 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, 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, 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 01:23:45,776 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:23:45,777 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:23:45,777 INFO L82 PathProgramCache]: Analyzing trace with hash 2003986425, now seen corresponding path program 1 times [2018-10-24 01:23:45,777 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:23:45,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:23:45,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:23:45,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:23:45,779 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:23:45,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:23:46,083 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:23:46,084 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:23:46,084 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:23:46,085 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 175 with the following transitions: [2018-10-24 01:23:46,088 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2879], [2881], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3409], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-24 01:23:46,187 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:23:46,188 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:24:03,416 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 01:24:12,341 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:24:12,343 INFO L272 AbstractInterpreter]: Visited 137 different actions 398 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 01:24:12,388 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:24:12,388 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:24:16,190 INFO L232 lantSequenceWeakener]: Weakened 35 states. On average, predicates are now at 75.44% of their original sizes. [2018-10-24 01:24:16,191 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:25:24,315 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:25:24,317 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:25:24,317 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [7] total 21 [2018-10-24 01:25:24,317 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:25:24,317 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-24 01:25:24,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-24 01:25:24,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2018-10-24 01:25:24,318 INFO L87 Difference]: Start difference. First operand 10597 states and 14744 transitions. Second operand 16 states. Received shutdown request... [2018-10-24 01:26:11,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 01:26:11,583 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 01:26:11,588 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 01:26:11,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:26:11 BoogieIcfgContainer [2018-10-24 01:26:11,589 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 01:26:11,590 INFO L168 Benchmark]: Toolchain (without parser) took 242318.39 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 2.3 GB in the end (delta: -919.0 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-24 01:26:11,591 INFO L168 Benchmark]: CDTParser took 0.21 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 01:26:11,593 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2528.27 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: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-24 01:26:11,594 INFO L168 Benchmark]: Boogie Procedure Inliner took 572.01 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 825.8 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 73.0 MB. Max. memory is 7.1 GB. [2018-10-24 01:26:11,595 INFO L168 Benchmark]: Boogie Preprocessor took 389.11 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 44.1 MB). Peak memory consumption was 44.1 MB. Max. memory is 7.1 GB. [2018-10-24 01:26:11,596 INFO L168 Benchmark]: RCFGBuilder took 11330.73 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 185.1 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 28.3 MB). Peak memory consumption was 654.5 MB. Max. memory is 7.1 GB. [2018-10-24 01:26:11,597 INFO L168 Benchmark]: TraceAbstraction took 227490.41 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -148.1 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-24 01:26:11,603 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 2528.27 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: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 572.01 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 825.8 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 73.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 389.11 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 44.1 MB). Peak memory consumption was 44.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11330.73 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 185.1 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 28.3 MB). Peak memory consumption was 654.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 227490.41 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -148.1 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 123]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 123). Cancelled while BasicCegarLoop was constructing difference of abstraction (10597states) and FLOYD_HOARE automaton (currently 10 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (426 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 227.3s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 125.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1668 SDtfs, 12970 SDslu, 2326 SDs, 0 SdLazy, 25524 SolverSat, 4443 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 85.6s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 213 GetRequests, 92 SyntacticMatches, 80 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 70.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10597occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 26.3s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9948510449088482 AbsIntWeakeningRatio, 0.12138728323699421 AbsIntAvgWeakeningVarsNumRemoved, 98.77456647398844 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 4 MinimizatonAttempts, 1326 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 608 NumberOfCodeBlocks, 608 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 603 ConstructedInterpolants, 0 QuantifiedInterpolants, 384964 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 115/148 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown