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_label11_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 23:08:24,132 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 23:08:24,135 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 23:08:24,151 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 23:08:24,151 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 23:08:24,156 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 23:08:24,157 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 23:08:24,160 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 23:08:24,163 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 23:08:24,166 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 23:08:24,168 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 23:08:24,169 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 23:08:24,170 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 23:08:24,171 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 23:08:24,175 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 23:08:24,176 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 23:08:24,180 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 23:08:24,185 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 23:08:24,187 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 23:08:24,189 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 23:08:24,190 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 23:08:24,191 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 23:08:24,193 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 23:08:24,201 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 23:08:24,224 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 23:08:24,225 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 23:08:24,226 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 23:08:24,226 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 23:08:24,226 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 23:08:24,226 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 23:08:24,226 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 23:08:24,227 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 23:08:24,227 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 23:08:24,227 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 23:08:24,227 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 23:08:24,227 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 23:08:24,228 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 23:08:24,228 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 23:08:24,228 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 23:08:24,228 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 23:08:24,229 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 23:08:24,229 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 23:08:24,229 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 23:08:24,229 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 23:08:24,230 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 23:08:24,230 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 23:08:24,230 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 23:08:24,230 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 23:08:24,230 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 23:08:24,230 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 23:08:24,231 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 23:08:24,231 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 23:08:24,231 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 23:08:24,231 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 23:08:24,231 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 23:08:24,232 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 23:08:24,232 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 23:08:24,232 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 23:08:24,281 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 23:08:24,295 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 23:08:24,300 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 23:08:24,302 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 23:08:24,302 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 23:08:24,303 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label11_true-unreach-call_false-termination.c [2018-10-23 23:08:24,368 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3f2414a76/c83c6fc9d29e476dbdd1c1f18b6bee46/FLAGe699e95f7 [2018-10-23 23:08:24,907 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 23:08:24,907 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label11_true-unreach-call_false-termination.c [2018-10-23 23:08:24,924 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3f2414a76/c83c6fc9d29e476dbdd1c1f18b6bee46/FLAGe699e95f7 [2018-10-23 23:08:24,943 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3f2414a76/c83c6fc9d29e476dbdd1c1f18b6bee46 [2018-10-23 23:08:24,960 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 23:08:24,961 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 23:08:24,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 23:08:24,963 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 23:08:24,966 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 23:08:24,968 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:08:24" (1/1) ... [2018-10-23 23:08:24,971 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@592ae664 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:08:24, skipping insertion in model container [2018-10-23 23:08:24,971 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:08:24" (1/1) ... [2018-10-23 23:08:24,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 23:08:25,058 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 23:08:25,564 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:08:25,569 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 23:08:25,684 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:08:25,706 INFO L193 MainTranslator]: Completed translation [2018-10-23 23:08:25,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:08:25 WrapperNode [2018-10-23 23:08:25,706 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 23:08:25,707 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 23:08:25,707 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 23:08:25,707 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 23:08:25,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:08:25" (1/1) ... [2018-10-23 23:08:25,733 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:08:25" (1/1) ... [2018-10-23 23:08:25,884 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 23:08:25,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 23:08:25,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 23:08:25,885 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 23:08:25,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:08:25" (1/1) ... [2018-10-23 23:08:25,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:08:25" (1/1) ... [2018-10-23 23:08:25,902 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:08:25" (1/1) ... [2018-10-23 23:08:25,902 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:08:25" (1/1) ... [2018-10-23 23:08:25,923 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:08:25" (1/1) ... [2018-10-23 23:08:25,935 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:08:25" (1/1) ... [2018-10-23 23:08:25,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:08:25" (1/1) ... [2018-10-23 23:08:25,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 23:08:25,961 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 23:08:25,961 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 23:08:25,961 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 23:08:25,962 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:08:25" (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 23:08:26,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 23:08:26,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 23:08:26,042 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 23:08:26,043 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 23:08:26,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 23:08:26,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 23:08:26,043 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 23:08:26,043 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 23:08:29,256 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 23:08:29,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:08:29 BoogieIcfgContainer [2018-10-23 23:08:29,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 23:08:29,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 23:08:29,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 23:08:29,264 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 23:08:29,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 11:08:24" (1/3) ... [2018-10-23 23:08:29,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@106ddb75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:08:29, skipping insertion in model container [2018-10-23 23:08:29,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:08:25" (2/3) ... [2018-10-23 23:08:29,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@106ddb75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:08:29, skipping insertion in model container [2018-10-23 23:08:29,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:08:29" (3/3) ... [2018-10-23 23:08:29,268 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label11_true-unreach-call_false-termination.c [2018-10-23 23:08:29,278 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 23:08:29,287 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 23:08:29,305 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 23:08:29,343 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 23:08:29,343 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 23:08:29,344 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 23:08:29,344 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 23:08:29,344 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 23:08:29,344 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 23:08:29,345 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 23:08:29,345 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 23:08:29,372 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2018-10-23 23:08:29,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-23 23:08:29,392 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:08:29,394 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:08:29,396 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:08:29,402 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:08:29,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1894719720, now seen corresponding path program 1 times [2018-10-23 23:08:29,404 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:08:29,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:08:29,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:08:29,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:08:29,463 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:08:29,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:08:30,112 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 23:08:30,115 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:08:30,116 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 23:08:30,116 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:08:30,123 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 23:08:30,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 23:08:30,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:08:30,146 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 3 states. [2018-10-23 23:08:31,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:08:31,963 INFO L93 Difference]: Finished difference Result 550 states and 941 transitions. [2018-10-23 23:08:31,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 23:08:31,966 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 116 [2018-10-23 23:08:31,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:08:31,986 INFO L225 Difference]: With dead ends: 550 [2018-10-23 23:08:31,986 INFO L226 Difference]: Without dead ends: 340 [2018-10-23 23:08:31,993 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:08:32,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-10-23 23:08:32,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-10-23 23:08:32,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-10-23 23:08:32,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 562 transitions. [2018-10-23 23:08:32,066 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 562 transitions. Word has length 116 [2018-10-23 23:08:32,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:08:32,067 INFO L481 AbstractCegarLoop]: Abstraction has 340 states and 562 transitions. [2018-10-23 23:08:32,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 23:08:32,068 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 562 transitions. [2018-10-23 23:08:32,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-23 23:08:32,074 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:08:32,074 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:08:32,074 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:08:32,075 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:08:32,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1844932745, now seen corresponding path program 1 times [2018-10-23 23:08:32,075 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:08:32,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:08:32,077 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:08:32,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:08:32,077 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:08:32,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:08:32,252 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 23:08:32,253 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:08:32,253 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 23:08:32,253 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:08:32,255 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 23:08:32,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 23:08:32,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 23:08:32,256 INFO L87 Difference]: Start difference. First operand 340 states and 562 transitions. Second operand 6 states. [2018-10-23 23:08:34,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:08:34,200 INFO L93 Difference]: Finished difference Result 888 states and 1491 transitions. [2018-10-23 23:08:34,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 23:08:34,200 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2018-10-23 23:08:34,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:08:34,206 INFO L225 Difference]: With dead ends: 888 [2018-10-23 23:08:34,206 INFO L226 Difference]: Without dead ends: 554 [2018-10-23 23:08:34,211 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 23:08:34,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2018-10-23 23:08:34,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 539. [2018-10-23 23:08:34,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2018-10-23 23:08:34,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 827 transitions. [2018-10-23 23:08:34,252 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 827 transitions. Word has length 127 [2018-10-23 23:08:34,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:08:34,253 INFO L481 AbstractCegarLoop]: Abstraction has 539 states and 827 transitions. [2018-10-23 23:08:34,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 23:08:34,253 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 827 transitions. [2018-10-23 23:08:34,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-23 23:08:34,258 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:08:34,258 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:08:34,259 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:08:34,259 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:08:34,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1950525493, now seen corresponding path program 1 times [2018-10-23 23:08:34,259 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:08:34,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:08:34,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:08:34,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:08:34,261 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:08:34,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:08:34,874 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 23:08:34,875 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:08:34,875 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 23:08:34,875 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:08:34,876 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 23:08:34,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 23:08:34,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:08:34,877 INFO L87 Difference]: Start difference. First operand 539 states and 827 transitions. Second operand 5 states. [2018-10-23 23:08:36,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:08:36,862 INFO L93 Difference]: Finished difference Result 1210 states and 1896 transitions. [2018-10-23 23:08:36,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 23:08:36,863 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2018-10-23 23:08:36,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:08:36,872 INFO L225 Difference]: With dead ends: 1210 [2018-10-23 23:08:36,873 INFO L226 Difference]: Without dead ends: 536 [2018-10-23 23:08:36,875 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:08:36,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2018-10-23 23:08:36,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 536. [2018-10-23 23:08:36,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2018-10-23 23:08:36,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 787 transitions. [2018-10-23 23:08:36,919 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 787 transitions. Word has length 128 [2018-10-23 23:08:36,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:08:36,919 INFO L481 AbstractCegarLoop]: Abstraction has 536 states and 787 transitions. [2018-10-23 23:08:36,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 23:08:36,920 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 787 transitions. [2018-10-23 23:08:36,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-10-23 23:08:36,924 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:08:36,924 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:08:36,924 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:08:36,924 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:08:36,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1220128141, now seen corresponding path program 1 times [2018-10-23 23:08:36,926 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:08:36,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:08:36,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:08:36,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:08:36,928 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:08:36,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:08:37,266 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 24 [2018-10-23 23:08:37,410 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:08:37,410 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:08:37,410 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 23:08:37,410 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:08:37,411 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 23:08:37,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 23:08:37,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:08:37,412 INFO L87 Difference]: Start difference. First operand 536 states and 787 transitions. Second operand 5 states. [2018-10-23 23:08:39,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:08:39,299 INFO L93 Difference]: Finished difference Result 1204 states and 1799 transitions. [2018-10-23 23:08:39,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 23:08:39,299 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2018-10-23 23:08:39,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:08:39,303 INFO L225 Difference]: With dead ends: 1204 [2018-10-23 23:08:39,304 INFO L226 Difference]: Without dead ends: 535 [2018-10-23 23:08:39,306 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:08:39,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2018-10-23 23:08:39,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 535. [2018-10-23 23:08:39,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 535 states. [2018-10-23 23:08:39,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 782 transitions. [2018-10-23 23:08:39,323 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 782 transitions. Word has length 129 [2018-10-23 23:08:39,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:08:39,323 INFO L481 AbstractCegarLoop]: Abstraction has 535 states and 782 transitions. [2018-10-23 23:08:39,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 23:08:39,324 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 782 transitions. [2018-10-23 23:08:39,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-23 23:08:39,326 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:08:39,327 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2018-10-23 23:08:39,327 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:08:39,327 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:08:39,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1858048063, now seen corresponding path program 1 times [2018-10-23 23:08:39,327 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:08:39,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:08:39,329 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:08:39,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:08:39,329 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:08:39,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:08:39,592 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:08:39,593 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:08:39,593 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 23:08:39,593 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:08:39,594 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 23:08:39,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 23:08:39,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:08:39,594 INFO L87 Difference]: Start difference. First operand 535 states and 782 transitions. Second operand 3 states. [2018-10-23 23:08:41,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:08:41,087 INFO L93 Difference]: Finished difference Result 1521 states and 2300 transitions. [2018-10-23 23:08:41,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 23:08:41,094 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 134 [2018-10-23 23:08:41,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:08:41,102 INFO L225 Difference]: With dead ends: 1521 [2018-10-23 23:08:41,103 INFO L226 Difference]: Without dead ends: 992 [2018-10-23 23:08:41,106 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:08:41,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2018-10-23 23:08:41,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 992. [2018-10-23 23:08:41,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 992 states. [2018-10-23 23:08:41,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 1411 transitions. [2018-10-23 23:08:41,144 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 1411 transitions. Word has length 134 [2018-10-23 23:08:41,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:08:41,145 INFO L481 AbstractCegarLoop]: Abstraction has 992 states and 1411 transitions. [2018-10-23 23:08:41,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 23:08:41,146 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 1411 transitions. [2018-10-23 23:08:41,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-10-23 23:08:41,151 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:08:41,151 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2018-10-23 23:08:41,152 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:08:41,152 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:08:41,152 INFO L82 PathProgramCache]: Analyzing trace with hash -865633433, now seen corresponding path program 1 times [2018-10-23 23:08:41,152 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:08:41,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:08:41,153 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:08:41,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:08:41,154 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:08:41,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:08:41,285 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:08:41,285 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:08:41,285 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 23:08:41,285 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:08:41,286 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 23:08:41,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 23:08:41,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 23:08:41,286 INFO L87 Difference]: Start difference. First operand 992 states and 1411 transitions. Second operand 6 states. [2018-10-23 23:08:42,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:08:42,438 INFO L93 Difference]: Finished difference Result 2947 states and 4374 transitions. [2018-10-23 23:08:42,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 23:08:42,443 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2018-10-23 23:08:42,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:08:42,456 INFO L225 Difference]: With dead ends: 2947 [2018-10-23 23:08:42,456 INFO L226 Difference]: Without dead ends: 1961 [2018-10-23 23:08:42,464 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 23:08:42,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1961 states. [2018-10-23 23:08:42,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1961 to 1928. [2018-10-23 23:08:42,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1928 states. [2018-10-23 23:08:42,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1928 states to 1928 states and 2554 transitions. [2018-10-23 23:08:42,553 INFO L78 Accepts]: Start accepts. Automaton has 1928 states and 2554 transitions. Word has length 135 [2018-10-23 23:08:42,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:08:42,554 INFO L481 AbstractCegarLoop]: Abstraction has 1928 states and 2554 transitions. [2018-10-23 23:08:42,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 23:08:42,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1928 states and 2554 transitions. [2018-10-23 23:08:42,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-10-23 23:08:42,563 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:08:42,563 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1] [2018-10-23 23:08:42,563 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:08:42,564 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:08:42,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1578661412, now seen corresponding path program 1 times [2018-10-23 23:08:42,564 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:08:42,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:08:42,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:08:42,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:08:42,569 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:08:42,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:08:42,943 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:08:42,944 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:08:42,944 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 23:08:42,945 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 152 with the following transitions: [2018-10-23 23:08:42,947 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [33], [34], [38], [42], [45], [46], [50], [54], [58], [62], [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], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [561], [565], [567], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-10-23 23:08:43,016 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 23:08:43,017 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 23:08:52,284 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 23:08:52,286 INFO L272 AbstractInterpreter]: Visited 69 different actions 69 times. Never merged. Never widened. Never found a fixpoint. Largest state had 42 variables. [2018-10-23 23:08:52,297 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:08:52,297 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 23:08:55,055 INFO L232 lantSequenceWeakener]: Weakened 95 states. On average, predicates are now at 79.81% of their original sizes. [2018-10-23 23:08:55,055 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 23:08:56,562 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 23:08:56,563 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 23:08:56,563 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [6] total 16 [2018-10-23 23:08:56,563 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:08:56,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-23 23:08:56,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-23 23:08:56,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-10-23 23:08:56,564 INFO L87 Difference]: Start difference. First operand 1928 states and 2554 transitions. Second operand 12 states. [2018-10-23 23:09:12,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:09:12,101 INFO L93 Difference]: Finished difference Result 3911 states and 5191 transitions. [2018-10-23 23:09:12,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-23 23:09:12,101 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 151 [2018-10-23 23:09:12,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:09:12,116 INFO L225 Difference]: With dead ends: 3911 [2018-10-23 23:09:12,116 INFO L226 Difference]: Without dead ends: 1989 [2018-10-23 23:09:12,121 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 156 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=106, Invalid=200, Unknown=0, NotChecked=0, Total=306 [2018-10-23 23:09:12,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1989 states. [2018-10-23 23:09:12,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1989 to 1989. [2018-10-23 23:09:12,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1989 states. [2018-10-23 23:09:12,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1989 states to 1989 states and 2620 transitions. [2018-10-23 23:09:12,183 INFO L78 Accepts]: Start accepts. Automaton has 1989 states and 2620 transitions. Word has length 151 [2018-10-23 23:09:12,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:09:12,183 INFO L481 AbstractCegarLoop]: Abstraction has 1989 states and 2620 transitions. [2018-10-23 23:09:12,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-23 23:09:12,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1989 states and 2620 transitions. [2018-10-23 23:09:12,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-10-23 23:09:12,192 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:09:12,192 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2018-10-23 23:09:12,193 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:09:12,193 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:09:12,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1993472409, now seen corresponding path program 1 times [2018-10-23 23:09:12,193 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:09:12,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:09:12,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:09:12,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:09:12,194 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:09:12,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:09:12,664 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-23 23:09:12,819 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 47 proven. 15 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-23 23:09:12,819 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:09:12,820 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 23:09:12,820 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 161 with the following transitions: [2018-10-23 23:09:12,820 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [10], [14], [18], [22], [26], [30], [33], [34], [38], [42], [45], [46], [50], [54], [58], [62], [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], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [561], [565], [567], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-10-23 23:09:12,830 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 23:09:12,831 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 23:09:40,714 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 23:09:40,714 INFO L272 AbstractInterpreter]: Visited 121 different actions 188 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 42 variables. [2018-10-23 23:09:40,722 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:09:40,722 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 23:09:45,182 INFO L232 lantSequenceWeakener]: Weakened 151 states. On average, predicates are now at 80.88% of their original sizes. [2018-10-23 23:09:45,182 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 23:10:48,054 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 23:10:48,054 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 23:10:48,054 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-10-23 23:10:48,054 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:10:48,055 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-23 23:10:48,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-23 23:10:48,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-10-23 23:10:48,056 INFO L87 Difference]: Start difference. First operand 1989 states and 2620 transitions. Second operand 17 states. [2018-10-23 23:11:53,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:11:53,125 INFO L93 Difference]: Finished difference Result 4056 states and 5353 transitions. [2018-10-23 23:11:53,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-23 23:11:53,125 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 160 [2018-10-23 23:11:53,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:11:53,137 INFO L225 Difference]: With dead ends: 4056 [2018-10-23 23:11:53,137 INFO L226 Difference]: Without dead ends: 2134 [2018-10-23 23:11:53,143 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 175 GetRequests, 68 SyntacticMatches, 76 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 738 ImplicationChecksByTransitivity, 73.1s TimeCoverageRelationStatistics Valid=223, Invalid=833, Unknown=0, NotChecked=0, Total=1056 [2018-10-23 23:11:53,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2134 states. [2018-10-23 23:11:53,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2134 to 2127. [2018-10-23 23:11:53,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2127 states. [2018-10-23 23:11:53,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2127 states to 2127 states and 2768 transitions. [2018-10-23 23:11:53,319 INFO L78 Accepts]: Start accepts. Automaton has 2127 states and 2768 transitions. Word has length 160 [2018-10-23 23:11:53,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:11:53,320 INFO L481 AbstractCegarLoop]: Abstraction has 2127 states and 2768 transitions. [2018-10-23 23:11:53,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-23 23:11:53,320 INFO L276 IsEmpty]: Start isEmpty. Operand 2127 states and 2768 transitions. [2018-10-23 23:11:53,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-10-23 23:11:53,329 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:11:53,330 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2018-10-23 23:11:53,330 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:11:53,330 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:11:53,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1610890117, now seen corresponding path program 1 times [2018-10-23 23:11:53,330 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:11:53,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:11:53,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:11:53,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:11:53,332 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:11:53,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:11:53,682 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 87 proven. 15 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-10-23 23:11:53,682 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:11:53,683 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 23:11:53,683 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 194 with the following transitions: [2018-10-23 23:11:53,683 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [33], [34], [38], [42], [45], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [137], [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], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [561], [565], [567], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-10-23 23:11:53,691 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 23:11:53,691 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-10-23 23:12:25,052 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-23 23:12:25,053 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-23 23:12:25,054 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-23 23:12:25,054 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:12:25,054 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 23:12:25,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:12:25,063 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-23 23:12:25,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:12:25,179 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 23:12:25,218 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-23 23:12:25,419 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 23:12:25,420 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 23:12:25,426 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 23:12:25,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 11:12:25 BoogieIcfgContainer [2018-10-23 23:12:25,427 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 23:12:25,428 INFO L168 Benchmark]: Toolchain (without parser) took 240467.83 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.9 GB in the end (delta: -2.5 GB). Peak memory consumption was 229.7 MB. Max. memory is 7.1 GB. [2018-10-23 23:12:25,429 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 23:12:25,430 INFO L168 Benchmark]: CACSL2BoogieTranslator took 744.06 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 23:12:25,431 INFO L168 Benchmark]: Boogie Procedure Inliner took 177.67 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -814.1 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2018-10-23 23:12:25,432 INFO L168 Benchmark]: Boogie Preprocessor took 72.39 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 23:12:25,432 INFO L168 Benchmark]: RCFGBuilder took 3298.61 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: 104.4 MB). Peak memory consumption was 104.4 MB. Max. memory is 7.1 GB. [2018-10-23 23:12:25,433 INFO L168 Benchmark]: TraceAbstraction took 236166.89 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 2.0 GB). Free memory was 2.1 GB in the beginning and 3.9 GB in the end (delta: -1.8 GB). Peak memory consumption was 166.9 MB. Max. memory is 7.1 GB. [2018-10-23 23:12:25,439 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 744.06 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 177.67 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -814.1 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 72.39 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 3298.61 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: 104.4 MB). Peak memory consumption was 104.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 236166.89 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 2.0 GB). Free memory was 2.1 GB in the beginning and 3.9 GB in the end (delta: -1.8 GB). Peak memory consumption was 166.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 503]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 503). Cancelled while BasicCegarLoop was analyzing trace of length 194 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 208 locations, 1 error locations. TIMEOUT Result, 236.0s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 91.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1124 SDtfs, 3669 SDslu, 776 SDs, 0 SdLazy, 4487 SolverSat, 871 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 29.1s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 377 GetRequests, 221 SyntacticMatches, 87 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 769 ImplicationChecksByTransitivity, 76.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2127occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 68.6s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.994115745595737 AbsIntWeakeningRatio, 0.2459546925566343 AbsIntAvgWeakeningVarsNumRemoved, 1900.6019417475727 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 8 MinimizatonAttempts, 55 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 1080 NumberOfCodeBlocks, 1080 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1072 ConstructedInterpolants, 0 QuantifiedInterpolants, 814335 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 155/172 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown