java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label40_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 22:15:18,201 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 22:15:18,207 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 22:15:18,219 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 22:15:18,220 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 22:15:18,221 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 22:15:18,222 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 22:15:18,224 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 22:15:18,226 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 22:15:18,226 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 22:15:18,227 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 22:15:18,228 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 22:15:18,229 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 22:15:18,231 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 22:15:18,232 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 22:15:18,233 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 22:15:18,234 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 22:15:18,239 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 22:15:18,244 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 22:15:18,246 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 22:15:18,247 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 22:15:18,248 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 22:15:18,250 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 22:15:18,258 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-23 22:15:18,258 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-23 22:15:18,261 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-23 22:15:18,261 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-23 22:15:18,262 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-23 22:15:18,283 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 22:15:18,283 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 22:15:18,284 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 22:15:18,284 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 22:15:18,284 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 22:15:18,284 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 22:15:18,285 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 22:15:18,286 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 22:15:18,286 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 22:15:18,286 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 22:15:18,286 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 22:15:18,286 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 22:15:18,287 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 22:15:18,287 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 22:15:18,287 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 22:15:18,288 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 22:15:18,289 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 22:15:18,290 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 22:15:18,290 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 22:15:18,290 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 22:15:18,290 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 22:15:18,290 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 22:15:18,291 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 22:15:18,291 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 22:15:18,291 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 22:15:18,291 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 22:15:18,291 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 22:15:18,291 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 22:15:18,292 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 22:15:18,292 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 22:15:18,292 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 22:15:18,292 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 22:15:18,292 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 22:15:18,293 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 22:15:18,345 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 22:15:18,358 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 22:15:18,362 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 22:15:18,363 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 22:15:18,364 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 22:15:18,365 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label40_false-unreach-call.c [2018-10-23 22:15:18,427 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8d4f5d212/e98f289549a84b48be5f451f966dd6dd/FLAGb54043d94 [2018-10-23 22:15:19,223 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 22:15:19,224 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label40_false-unreach-call.c [2018-10-23 22:15:19,253 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8d4f5d212/e98f289549a84b48be5f451f966dd6dd/FLAGb54043d94 [2018-10-23 22:15:19,270 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8d4f5d212/e98f289549a84b48be5f451f966dd6dd [2018-10-23 22:15:19,284 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 22:15:19,286 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 22:15:19,288 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 22:15:19,288 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 22:15:19,296 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 22:15:19,297 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:15:19" (1/1) ... [2018-10-23 22:15:19,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1986afa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:15:19, skipping insertion in model container [2018-10-23 22:15:19,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:15:19" (1/1) ... [2018-10-23 22:15:19,313 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 22:15:19,479 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 22:15:20,734 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:15:20,739 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 22:15:21,370 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:15:21,409 INFO L193 MainTranslator]: Completed translation [2018-10-23 22:15:21,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:15:21 WrapperNode [2018-10-23 22:15:21,410 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 22:15:21,413 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 22:15:21,413 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 22:15:21,413 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 22:15:21,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:15:21" (1/1) ... [2018-10-23 22:15:21,496 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:15:21" (1/1) ... [2018-10-23 22:15:21,908 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 22:15:21,908 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 22:15:21,908 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 22:15:21,909 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 22:15:21,920 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:15:21" (1/1) ... [2018-10-23 22:15:21,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:15:21" (1/1) ... [2018-10-23 22:15:21,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:15:21" (1/1) ... [2018-10-23 22:15:21,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:15:21" (1/1) ... [2018-10-23 22:15:22,050 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:15:21" (1/1) ... [2018-10-23 22:15:22,090 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:15:21" (1/1) ... [2018-10-23 22:15:22,129 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:15:21" (1/1) ... [2018-10-23 22:15:22,167 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 22:15:22,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 22:15:22,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 22:15:22,168 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 22:15:22,169 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:15:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 22:15:22,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 22:15:22,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 22:15:22,234 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-23 22:15:22,234 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-23 22:15:22,235 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-23 22:15:22,235 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-23 22:15:22,235 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-23 22:15:22,235 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-23 22:15:22,235 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 22:15:22,236 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 22:15:22,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 22:15:22,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 22:15:22,236 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 22:15:22,237 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 22:15:33,785 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 22:15:33,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:15:33 BoogieIcfgContainer [2018-10-23 22:15:33,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 22:15:33,787 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 22:15:33,787 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 22:15:33,791 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 22:15:33,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:15:19" (1/3) ... [2018-10-23 22:15:33,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f2455b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:15:33, skipping insertion in model container [2018-10-23 22:15:33,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:15:21" (2/3) ... [2018-10-23 22:15:33,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63f2455b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:15:33, skipping insertion in model container [2018-10-23 22:15:33,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:15:33" (3/3) ... [2018-10-23 22:15:33,795 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label40_false-unreach-call.c [2018-10-23 22:15:33,805 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 22:15:33,820 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 22:15:33,837 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 22:15:33,897 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 22:15:33,898 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 22:15:33,898 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 22:15:33,898 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 22:15:33,898 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 22:15:33,898 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 22:15:33,898 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 22:15:33,899 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 22:15:33,937 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-23 22:15:33,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-23 22:15:33,948 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:15:33,950 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:15:33,952 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:15:33,959 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:15:33,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1589913364, now seen corresponding path program 1 times [2018-10-23 22:15:33,962 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:15:34,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:15:34,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:15:34,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:15:34,017 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:15:34,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:15:34,342 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-23 22:15:34,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:15:34,352 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:15:34,352 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 22:15:34,352 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:15:34,366 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 22:15:34,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 22:15:34,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:15:34,402 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 4 states. [2018-10-23 22:15:46,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:15:46,821 INFO L93 Difference]: Finished difference Result 3234 states and 6255 transitions. [2018-10-23 22:15:46,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 22:15:46,826 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-10-23 22:15:46,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:15:46,870 INFO L225 Difference]: With dead ends: 3234 [2018-10-23 22:15:46,871 INFO L226 Difference]: Without dead ends: 2388 [2018-10-23 22:15:46,882 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:15:46,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2018-10-23 22:15:47,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 1604. [2018-10-23 22:15:47,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-10-23 22:15:47,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2600 transitions. [2018-10-23 22:15:47,092 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2600 transitions. Word has length 16 [2018-10-23 22:15:47,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:15:47,093 INFO L481 AbstractCegarLoop]: Abstraction has 1604 states and 2600 transitions. [2018-10-23 22:15:47,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 22:15:47,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2600 transitions. [2018-10-23 22:15:47,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-23 22:15:47,102 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:15:47,102 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] [2018-10-23 22:15:47,102 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:15:47,103 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:15:47,105 INFO L82 PathProgramCache]: Analyzing trace with hash -510540602, now seen corresponding path program 1 times [2018-10-23 22:15:47,105 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:15:47,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:15:47,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:15:47,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:15:47,107 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:15:47,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:15:47,436 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 22:15:47,436 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:15:47,436 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 22:15:47,437 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:15:47,439 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 22:15:47,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 22:15:47,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-23 22:15:47,439 INFO L87 Difference]: Start difference. First operand 1604 states and 2600 transitions. Second operand 5 states. [2018-10-23 22:16:00,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:16:00,125 INFO L93 Difference]: Finished difference Result 4873 states and 7923 transitions. [2018-10-23 22:16:00,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 22:16:00,133 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2018-10-23 22:16:00,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:16:00,152 INFO L225 Difference]: With dead ends: 4873 [2018-10-23 22:16:00,152 INFO L226 Difference]: Without dead ends: 3275 [2018-10-23 22:16:00,158 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:16:00,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3275 states. [2018-10-23 22:16:00,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3275 to 3241. [2018-10-23 22:16:00,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3241 states. [2018-10-23 22:16:00,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3241 states to 3241 states and 4816 transitions. [2018-10-23 22:16:00,282 INFO L78 Accepts]: Start accepts. Automaton has 3241 states and 4816 transitions. Word has length 96 [2018-10-23 22:16:00,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:16:00,283 INFO L481 AbstractCegarLoop]: Abstraction has 3241 states and 4816 transitions. [2018-10-23 22:16:00,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 22:16:00,283 INFO L276 IsEmpty]: Start isEmpty. Operand 3241 states and 4816 transitions. [2018-10-23 22:16:00,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-23 22:16:00,290 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:16:00,291 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] [2018-10-23 22:16:00,292 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:16:00,292 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:16:00,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1964330847, now seen corresponding path program 1 times [2018-10-23 22:16:00,292 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:16:00,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:16:00,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:16:00,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:16:00,295 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:16:00,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:16:00,642 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:16:00,699 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 22:16:00,700 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:16:00,700 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:16:00,700 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:16:00,701 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:16:00,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:16:00,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:16:00,702 INFO L87 Difference]: Start difference. First operand 3241 states and 4816 transitions. Second operand 6 states. [2018-10-23 22:16:15,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:16:15,980 INFO L93 Difference]: Finished difference Result 12870 states and 19656 transitions. [2018-10-23 22:16:15,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:16:15,981 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-10-23 22:16:15,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:16:16,031 INFO L225 Difference]: With dead ends: 12870 [2018-10-23 22:16:16,031 INFO L226 Difference]: Without dead ends: 9635 [2018-10-23 22:16:16,051 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 22:16:16,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9635 states. [2018-10-23 22:16:16,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9635 to 9567. [2018-10-23 22:16:16,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9567 states. [2018-10-23 22:16:16,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9567 states to 9567 states and 13823 transitions. [2018-10-23 22:16:16,327 INFO L78 Accepts]: Start accepts. Automaton has 9567 states and 13823 transitions. Word has length 125 [2018-10-23 22:16:16,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:16:16,328 INFO L481 AbstractCegarLoop]: Abstraction has 9567 states and 13823 transitions. [2018-10-23 22:16:16,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:16:16,329 INFO L276 IsEmpty]: Start isEmpty. Operand 9567 states and 13823 transitions. [2018-10-23 22:16:16,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-23 22:16:16,341 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:16:16,341 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:16:16,342 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:16:16,343 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:16:16,343 INFO L82 PathProgramCache]: Analyzing trace with hash 369198727, now seen corresponding path program 1 times [2018-10-23 22:16:16,343 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:16:16,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:16:16,344 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:16:16,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:16:16,345 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:16:16,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:16:16,695 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:16:16,738 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 22:16:16,739 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:16:16,739 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:16:16,739 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:16:16,740 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:16:16,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:16:16,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:16:16,740 INFO L87 Difference]: Start difference. First operand 9567 states and 13823 transitions. Second operand 6 states. [2018-10-23 22:16:29,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:16:29,053 INFO L93 Difference]: Finished difference Result 25919 states and 39242 transitions. [2018-10-23 22:16:29,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:16:29,053 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 137 [2018-10-23 22:16:29,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:16:29,158 INFO L225 Difference]: With dead ends: 25919 [2018-10-23 22:16:29,158 INFO L226 Difference]: Without dead ends: 16358 [2018-10-23 22:16:29,193 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 22:16:29,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16358 states. [2018-10-23 22:16:29,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16358 to 16178. [2018-10-23 22:16:29,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16178 states. [2018-10-23 22:16:29,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16178 states to 16178 states and 23352 transitions. [2018-10-23 22:16:29,637 INFO L78 Accepts]: Start accepts. Automaton has 16178 states and 23352 transitions. Word has length 137 [2018-10-23 22:16:29,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:16:29,638 INFO L481 AbstractCegarLoop]: Abstraction has 16178 states and 23352 transitions. [2018-10-23 22:16:29,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:16:29,638 INFO L276 IsEmpty]: Start isEmpty. Operand 16178 states and 23352 transitions. [2018-10-23 22:16:29,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-23 22:16:29,641 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:16:29,641 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:16:29,641 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:16:29,642 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:16:29,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1940106815, now seen corresponding path program 1 times [2018-10-23 22:16:29,642 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:16:29,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:16:29,643 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:16:29,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:16:29,643 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:16:29,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:16:29,908 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:16:30,231 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 22:16:30,231 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:16:30,232 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:16:30,232 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:16:30,232 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:16:30,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:16:30,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:16:30,233 INFO L87 Difference]: Start difference. First operand 16178 states and 23352 transitions. Second operand 6 states. [2018-10-23 22:16:38,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:16:38,193 INFO L93 Difference]: Finished difference Result 39084 states and 58134 transitions. [2018-10-23 22:16:38,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:16:38,198 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2018-10-23 22:16:38,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:16:38,285 INFO L225 Difference]: With dead ends: 39084 [2018-10-23 22:16:38,285 INFO L226 Difference]: Without dead ends: 22912 [2018-10-23 22:16:38,341 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 22:16:38,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22912 states. [2018-10-23 22:16:38,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22912 to 22788. [2018-10-23 22:16:38,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22788 states. [2018-10-23 22:16:38,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22788 states to 22788 states and 31239 transitions. [2018-10-23 22:16:38,891 INFO L78 Accepts]: Start accepts. Automaton has 22788 states and 31239 transitions. Word has length 141 [2018-10-23 22:16:38,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:16:38,892 INFO L481 AbstractCegarLoop]: Abstraction has 22788 states and 31239 transitions. [2018-10-23 22:16:38,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:16:38,892 INFO L276 IsEmpty]: Start isEmpty. Operand 22788 states and 31239 transitions. [2018-10-23 22:16:38,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-23 22:16:38,896 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:16:38,896 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:16:38,896 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:16:38,896 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:16:38,897 INFO L82 PathProgramCache]: Analyzing trace with hash -232189726, now seen corresponding path program 1 times [2018-10-23 22:16:38,897 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:16:38,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:16:38,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:16:38,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:16:38,898 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:16:38,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:16:39,222 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:16:39,453 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-23 22:16:39,454 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:16:39,454 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:16:39,455 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 163 with the following transitions: [2018-10-23 22:16:39,458 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1895], [1897], [1900], [1908], [1916], [1924], [1932], [1940], [1948], [1956], [1964], [1972], [1980], [1988], [1996], [2004], [2012], [2020], [2028], [2036], [2044], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2664], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-23 22:16:39,540 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:16:39,540 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:16:45,117 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:17:08,404 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:17:08,406 INFO L272 AbstractInterpreter]: Visited 153 different actions 446 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-23 22:17:08,457 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:17:08,457 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:17:12,857 INFO L232 lantSequenceWeakener]: Weakened 160 states. On average, predicates are now at 75% of their original sizes. [2018-10-23 22:17:12,858 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:17:14,245 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:17:14,247 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:17:14,247 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [4] total 15 [2018-10-23 22:17:14,247 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:17:14,248 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-23 22:17:14,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-23 22:17:14,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-10-23 22:17:14,248 INFO L87 Difference]: Start difference. First operand 22788 states and 31239 transitions. Second operand 13 states. Received shutdown request... [2018-10-23 22:19:03,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-23 22:19:03,989 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 22:19:03,994 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 22:19:03,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:19:03 BoogieIcfgContainer [2018-10-23 22:19:03,995 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 22:19:03,996 INFO L168 Benchmark]: Toolchain (without parser) took 224711.30 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.4 GB in the end (delta: -2.0 GB). Peak memory consumption was 514.8 MB. Max. memory is 7.1 GB. [2018-10-23 22:19:03,997 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 22:19:03,998 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2122.32 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-23 22:19:03,999 INFO L168 Benchmark]: Boogie Procedure Inliner took 495.43 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 791.2 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. [2018-10-23 22:19:04,000 INFO L168 Benchmark]: Boogie Preprocessor took 258.98 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 36.5 MB). Peak memory consumption was 36.5 MB. Max. memory is 7.1 GB. [2018-10-23 22:19:04,001 INFO L168 Benchmark]: RCFGBuilder took 11618.78 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 179.8 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -179.3 MB). Peak memory consumption was 673.3 MB. Max. memory is 7.1 GB. [2018-10-23 22:19:04,002 INFO L168 Benchmark]: TraceAbstraction took 210207.82 ms. Allocated memory was 2.5 GB in the beginning and 4.1 GB in the end (delta: 1.6 GB). Free memory was 2.4 GB in the beginning and 3.4 GB in the end (delta: -1.1 GB). Peak memory consumption was 517.9 MB. Max. memory is 7.1 GB. [2018-10-23 22:19:04,007 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2122.32 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 495.43 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 791.2 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 258.98 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 36.5 MB). Peak memory consumption was 36.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11618.78 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 179.8 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -179.3 MB). Peak memory consumption was 673.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210207.82 ms. Allocated memory was 2.5 GB in the beginning and 4.1 GB in the end (delta: 1.6 GB). Free memory was 2.4 GB in the beginning and 3.4 GB in the end (delta: -1.1 GB). Peak memory consumption was 517.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 39]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 39). Cancelled while BasicCegarLoop was constructing difference of abstraction (22788states) and FLOYD_HOARE automaton (currently 17 states, 13 states before enhancement),while ReachableStatesComputation was computing reachable states (12019 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 210.1s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 170.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1396 SDtfs, 17926 SDslu, 1714 SDs, 0 SdLazy, 31466 SolverSat, 6744 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 110.5s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 216 GetRequests, 158 SyntacticMatches, 8 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22788occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 29.0s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9944672718585761 AbsIntWeakeningRatio, 0.13043478260869565 AbsIntAvgWeakeningVarsNumRemoved, 24.012422360248447 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 1190 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 677 NumberOfCodeBlocks, 677 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 671 ConstructedInterpolants, 0 QuantifiedInterpolants, 391033 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 40/45 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown