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/Problem01_label27_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 23:11:18,075 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 23:11:18,077 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 23:11:18,089 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 23:11:18,090 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 23:11:18,091 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 23:11:18,092 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 23:11:18,094 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 23:11:18,096 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 23:11:18,096 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 23:11:18,097 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 23:11:18,098 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 23:11:18,099 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 23:11:18,100 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 23:11:18,101 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 23:11:18,102 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 23:11:18,102 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 23:11:18,104 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 23:11:18,106 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 23:11:18,108 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 23:11:18,109 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 23:11:18,110 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 23:11:18,113 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 23:11:18,122 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 23:11:18,138 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 23:11:18,139 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 23:11:18,139 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 23:11:18,140 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 23:11:18,140 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 23:11:18,140 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 23:11:18,140 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 23:11:18,141 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 23:11:18,141 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 23:11:18,141 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 23:11:18,141 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 23:11:18,141 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 23:11:18,142 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 23:11:18,142 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 23:11:18,142 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 23:11:18,143 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 23:11:18,143 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 23:11:18,143 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 23:11:18,143 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 23:11:18,143 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 23:11:18,144 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 23:11:18,144 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 23:11:18,144 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 23:11:18,144 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 23:11:18,145 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 23:11:18,145 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 23:11:18,145 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 23:11:18,145 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 23:11:18,145 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 23:11:18,146 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 23:11:18,146 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 23:11:18,146 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 23:11:18,146 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 23:11:18,146 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 23:11:18,191 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 23:11:18,211 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 23:11:18,216 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 23:11:18,218 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 23:11:18,218 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 23:11:18,219 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label27_true-unreach-call_false-termination.c [2018-10-23 23:11:18,290 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f9ea07030/6366cc09f8844268b7d8dc1194111984/FLAGb171e4929 [2018-10-23 23:11:18,907 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 23:11:18,911 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label27_true-unreach-call_false-termination.c [2018-10-23 23:11:18,924 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f9ea07030/6366cc09f8844268b7d8dc1194111984/FLAGb171e4929 [2018-10-23 23:11:18,939 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f9ea07030/6366cc09f8844268b7d8dc1194111984 [2018-10-23 23:11:18,951 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 23:11:18,952 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 23:11:18,954 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 23:11:18,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 23:11:18,958 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 23:11:18,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:11:18" (1/1) ... [2018-10-23 23:11:18,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76c58b73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:11:18, skipping insertion in model container [2018-10-23 23:11:18,962 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:11:18" (1/1) ... [2018-10-23 23:11:18,971 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 23:11:19,024 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 23:11:19,444 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:11:19,449 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 23:11:19,541 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:11:19,559 INFO L193 MainTranslator]: Completed translation [2018-10-23 23:11:19,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:11:19 WrapperNode [2018-10-23 23:11:19,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 23:11:19,560 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 23:11:19,561 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 23:11:19,561 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 23:11:19,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:11:19" (1/1) ... [2018-10-23 23:11:19,590 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:11:19" (1/1) ... [2018-10-23 23:11:19,747 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 23:11:19,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 23:11:19,747 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 23:11:19,748 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 23:11:19,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:11:19" (1/1) ... [2018-10-23 23:11:19,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:11:19" (1/1) ... [2018-10-23 23:11:19,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:11:19" (1/1) ... [2018-10-23 23:11:19,773 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:11:19" (1/1) ... [2018-10-23 23:11:19,814 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:11:19" (1/1) ... [2018-10-23 23:11:19,844 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:11:19" (1/1) ... [2018-10-23 23:11:19,850 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:11:19" (1/1) ... [2018-10-23 23:11:19,858 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 23:11:19,859 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 23:11:19,859 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 23:11:19,859 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 23:11:19,860 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:11:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 23:11:19,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 23:11:19,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 23:11:19,935 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 23:11:19,936 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 23:11:19,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 23:11:19,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 23:11:19,936 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 23:11:19,936 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 23:11:23,423 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 23:11:23,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:11:23 BoogieIcfgContainer [2018-10-23 23:11:23,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 23:11:23,425 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 23:11:23,426 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 23:11:23,432 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 23:11:23,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 11:11:18" (1/3) ... [2018-10-23 23:11:23,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65f85c94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:11:23, skipping insertion in model container [2018-10-23 23:11:23,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:11:19" (2/3) ... [2018-10-23 23:11:23,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65f85c94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:11:23, skipping insertion in model container [2018-10-23 23:11:23,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:11:23" (3/3) ... [2018-10-23 23:11:23,437 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label27_true-unreach-call_false-termination.c [2018-10-23 23:11:23,448 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 23:11:23,458 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 23:11:23,476 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 23:11:23,513 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 23:11:23,514 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 23:11:23,514 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 23:11:23,514 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 23:11:23,514 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 23:11:23,514 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 23:11:23,515 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 23:11:23,515 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 23:11:23,541 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2018-10-23 23:11:23,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-23 23:11:23,551 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:11:23,553 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, 1, 1, 1, 1, 1, 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 23:11:23,556 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:11:23,562 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:11:23,563 INFO L82 PathProgramCache]: Analyzing trace with hash 933673069, now seen corresponding path program 1 times [2018-10-23 23:11:23,566 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:11:23,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:11:23,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:11:23,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:11:23,621 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:11:23,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:11:24,300 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-23 23:11:24,551 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 23:11:24,554 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:11:24,554 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 23:11:24,555 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:11:24,562 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 23:11:24,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 23:11:24,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 23:11:24,580 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 4 states. [2018-10-23 23:11:27,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:11:27,229 INFO L93 Difference]: Finished difference Result 702 states and 1227 transitions. [2018-10-23 23:11:27,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 23:11:27,233 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 95 [2018-10-23 23:11:27,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:11:27,254 INFO L225 Difference]: With dead ends: 702 [2018-10-23 23:11:27,255 INFO L226 Difference]: Without dead ends: 488 [2018-10-23 23:11:27,262 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 23:11:27,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2018-10-23 23:11:27,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 340. [2018-10-23 23:11:27,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-10-23 23:11:27,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 565 transitions. [2018-10-23 23:11:27,343 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 565 transitions. Word has length 95 [2018-10-23 23:11:27,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:11:27,344 INFO L481 AbstractCegarLoop]: Abstraction has 340 states and 565 transitions. [2018-10-23 23:11:27,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 23:11:27,345 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 565 transitions. [2018-10-23 23:11:27,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-23 23:11:27,351 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:11:27,351 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 23:11:27,352 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:11:27,352 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:11:27,352 INFO L82 PathProgramCache]: Analyzing trace with hash 2037295790, now seen corresponding path program 1 times [2018-10-23 23:11:27,352 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:11:27,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:11:27,354 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:11:27,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:11:27,355 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:11:27,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:11:27,579 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:11:27,580 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:11:27,580 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 23:11:27,580 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:11:27,582 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 23:11:27,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 23:11:27,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 23:11:27,583 INFO L87 Difference]: Start difference. First operand 340 states and 565 transitions. Second operand 6 states. [2018-10-23 23:11:29,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:11:29,643 INFO L93 Difference]: Finished difference Result 1070 states and 1865 transitions. [2018-10-23 23:11:29,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 23:11:29,647 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 106 [2018-10-23 23:11:29,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:11:29,656 INFO L225 Difference]: With dead ends: 1070 [2018-10-23 23:11:29,656 INFO L226 Difference]: Without dead ends: 736 [2018-10-23 23:11:29,660 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 23:11:29,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2018-10-23 23:11:29,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 719. [2018-10-23 23:11:29,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 719 states. [2018-10-23 23:11:29,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 1163 transitions. [2018-10-23 23:11:29,724 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 1163 transitions. Word has length 106 [2018-10-23 23:11:29,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:11:29,725 INFO L481 AbstractCegarLoop]: Abstraction has 719 states and 1163 transitions. [2018-10-23 23:11:29,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 23:11:29,725 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 1163 transitions. [2018-10-23 23:11:29,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-10-23 23:11:29,730 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:11:29,730 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 23:11:29,730 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:11:29,731 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:11:29,731 INFO L82 PathProgramCache]: Analyzing trace with hash 420402650, now seen corresponding path program 1 times [2018-10-23 23:11:29,731 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:11:29,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:11:29,733 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:11:29,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:11:29,733 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:11:29,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:11:29,906 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:11:29,907 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:11:29,907 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 23:11:29,907 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:11:29,908 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 23:11:29,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 23:11:29,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:11:29,909 INFO L87 Difference]: Start difference. First operand 719 states and 1163 transitions. Second operand 3 states. [2018-10-23 23:11:32,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:11:32,084 INFO L93 Difference]: Finished difference Result 2065 states and 3447 transitions. [2018-10-23 23:11:32,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 23:11:32,087 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2018-10-23 23:11:32,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:11:32,099 INFO L225 Difference]: With dead ends: 2065 [2018-10-23 23:11:32,100 INFO L226 Difference]: Without dead ends: 1352 [2018-10-23 23:11:32,107 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:11:32,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2018-10-23 23:11:32,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1345. [2018-10-23 23:11:32,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1345 states. [2018-10-23 23:11:32,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1345 states to 1345 states and 2085 transitions. [2018-10-23 23:11:32,172 INFO L78 Accepts]: Start accepts. Automaton has 1345 states and 2085 transitions. Word has length 107 [2018-10-23 23:11:32,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:11:32,177 INFO L481 AbstractCegarLoop]: Abstraction has 1345 states and 2085 transitions. [2018-10-23 23:11:32,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 23:11:32,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states and 2085 transitions. [2018-10-23 23:11:32,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-23 23:11:32,181 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:11:32,183 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:11:32,184 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:11:32,184 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:11:32,184 INFO L82 PathProgramCache]: Analyzing trace with hash -820743182, now seen corresponding path program 1 times [2018-10-23 23:11:32,184 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:11:32,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:11:32,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:11:32,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:11:32,186 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:11:32,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:11:32,391 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:11:32,391 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:11:32,391 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 23:11:32,392 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:11:32,392 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 23:11:32,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 23:11:32,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 23:11:32,393 INFO L87 Difference]: Start difference. First operand 1345 states and 2085 transitions. Second operand 6 states. [2018-10-23 23:11:34,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:11:34,441 INFO L93 Difference]: Finished difference Result 4143 states and 6680 transitions. [2018-10-23 23:11:34,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 23:11:34,444 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2018-10-23 23:11:34,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:11:34,465 INFO L225 Difference]: With dead ends: 4143 [2018-10-23 23:11:34,466 INFO L226 Difference]: Without dead ends: 2804 [2018-10-23 23:11:34,476 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 23:11:34,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2804 states. [2018-10-23 23:11:34,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2804 to 2778. [2018-10-23 23:11:34,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2778 states. [2018-10-23 23:11:34,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2778 states to 2778 states and 4132 transitions. [2018-10-23 23:11:34,580 INFO L78 Accepts]: Start accepts. Automaton has 2778 states and 4132 transitions. Word has length 119 [2018-10-23 23:11:34,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:11:34,581 INFO L481 AbstractCegarLoop]: Abstraction has 2778 states and 4132 transitions. [2018-10-23 23:11:34,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 23:11:34,581 INFO L276 IsEmpty]: Start isEmpty. Operand 2778 states and 4132 transitions. [2018-10-23 23:11:34,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-23 23:11:34,586 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:11:34,587 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-23 23:11:34,587 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:11:34,587 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:11:34,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1178183073, now seen corresponding path program 1 times [2018-10-23 23:11:34,588 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:11:34,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:11:34,589 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:11:34,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:11:34,589 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:11:34,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:11:34,793 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:11:34,794 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:11:34,794 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 23:11:34,795 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 132 with the following transitions: [2018-10-23 23:11:34,797 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [17], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [65], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [397], [399], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-10-23 23:11:34,881 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 23:11:34,882 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 23:12:10,384 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 23:12:10,385 INFO L272 AbstractInterpreter]: Visited 99 different actions 164 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 42 variables. [2018-10-23 23:12:10,402 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:12:10,402 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 23:12:17,973 INFO L232 lantSequenceWeakener]: Weakened 21 states. On average, predicates are now at 81.9% of their original sizes. [2018-10-23 23:12:17,974 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 23:13:12,381 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 23:13:12,382 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 23:13:12,382 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [6] total 19 [2018-10-23 23:13:12,383 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:13:12,383 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-23 23:13:12,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-23 23:13:12,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2018-10-23 23:13:12,384 INFO L87 Difference]: Start difference. First operand 2778 states and 4132 transitions. Second operand 15 states. Received shutdown request... [2018-10-23 23:15:22,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-23 23:15:22,759 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 23:15:22,766 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 23:15:22,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 11:15:22 BoogieIcfgContainer [2018-10-23 23:15:22,766 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 23:15:22,767 INFO L168 Benchmark]: Toolchain (without parser) took 243815.85 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -668.8 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-23 23:15:22,769 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. [2018-10-23 23:15:22,769 INFO L168 Benchmark]: CACSL2BoogieTranslator took 605.94 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-23 23:15:22,770 INFO L168 Benchmark]: Boogie Procedure Inliner took 186.68 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 732.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -811.1 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2018-10-23 23:15:22,771 INFO L168 Benchmark]: Boogie Preprocessor took 111.39 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 23:15:22,771 INFO L168 Benchmark]: RCFGBuilder took 3565.39 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 109.3 MB). Peak memory consumption was 109.3 MB. Max. memory is 7.1 GB. [2018-10-23 23:15:22,772 INFO L168 Benchmark]: TraceAbstraction took 239341.05 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.4 GB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-23 23:15:22,778 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 605.94 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 186.68 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 732.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -811.1 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.39 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3565.39 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 109.3 MB). Peak memory consumption was 109.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 239341.05 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.4 GB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 440]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 440). Cancelled while BasicCegarLoop was constructing difference of abstraction (2778states) and FLOYD_HOARE automaton (currently 21 states, 15 states before enhancement),while ReachableStatesComputation was computing reachable states (397 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 208 locations, 1 error locations. TIMEOUT Result, 239.2s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 139.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 449 SDtfs, 2323 SDslu, 349 SDs, 0 SdLazy, 3167 SolverSat, 815 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 55.2s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 169 GetRequests, 119 SyntacticMatches, 11 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 67.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2778occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 35.6s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9931921736799786 AbsIntWeakeningRatio, 0.2692307692307692 AbsIntAvgWeakeningVarsNumRemoved, 187.41538461538462 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 198 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 558 NumberOfCodeBlocks, 558 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 553 ConstructedInterpolants, 0 QuantifiedInterpolants, 180923 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 78/80 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown