java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label58_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 23:04:22,253 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 23:04:22,255 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 23:04:22,267 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 23:04:22,268 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 23:04:22,269 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 23:04:22,270 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 23:04:22,272 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 23:04:22,274 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 23:04:22,274 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 23:04:22,275 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 23:04:22,276 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 23:04:22,276 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 23:04:22,277 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 23:04:22,279 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 23:04:22,279 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 23:04:22,280 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 23:04:22,284 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 23:04:22,286 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 23:04:22,287 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 23:04:22,292 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 23:04:22,293 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 23:04:22,295 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-23 23:04:22,308 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-23 23:04:22,308 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-23 23:04:22,309 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-23 23:04:22,311 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-23 23:04:22,311 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf [2018-07-23 23:04:22,340 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 23:04:22,340 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 23:04:22,341 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 23:04:22,342 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-23 23:04:22,342 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-23 23:04:22,342 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-23 23:04:22,342 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-23 23:04:22,342 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-23 23:04:22,343 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-23 23:04:22,343 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-23 23:04:22,343 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-23 23:04:22,344 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 23:04:22,345 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 23:04:22,345 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 23:04:22,345 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 23:04:22,345 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 23:04:22,347 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 23:04:22,347 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 23:04:22,348 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 23:04:22,348 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 23:04:22,348 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 23:04:22,348 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 23:04:22,348 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 23:04:22,349 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 23:04:22,349 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 23:04:22,349 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 23:04:22,349 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 23:04:22,349 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-23 23:04:22,350 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 23:04:22,350 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 23:04:22,350 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 23:04:22,350 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 23:04:22,351 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-23 23:04:22,428 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 23:04:22,442 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 23:04:22,446 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 23:04:22,447 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 23:04:22,448 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 23:04:22,449 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label58_true-unreach-call.c [2018-07-23 23:04:22,790 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4470b473/aef7f2f0f2974ab6874ce7f393a9fc60/FLAGb8c78a90f [2018-07-23 23:04:23,167 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 23:04:23,170 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label58_true-unreach-call.c [2018-07-23 23:04:23,204 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4470b473/aef7f2f0f2974ab6874ce7f393a9fc60/FLAGb8c78a90f [2018-07-23 23:04:23,227 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4470b473/aef7f2f0f2974ab6874ce7f393a9fc60 [2018-07-23 23:04:23,241 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 23:04:23,243 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 23:04:23,244 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 23:04:23,245 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 23:04:23,252 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 23:04:23,253 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 11:04:23" (1/1) ... [2018-07-23 23:04:23,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2222dcdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:04:23, skipping insertion in model container [2018-07-23 23:04:23,258 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 11:04:23" (1/1) ... [2018-07-23 23:04:23,558 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 23:04:24,344 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 23:04:24,364 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 23:04:24,800 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 23:04:25,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:04:25 WrapperNode [2018-07-23 23:04:25,044 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 23:04:25,045 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 23:04:25,046 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 23:04:25,046 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 23:04:25,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:04:25" (1/1) ... [2018-07-23 23:04:25,154 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:04:25" (1/1) ... [2018-07-23 23:04:25,359 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 23:04:25,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 23:04:25,360 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 23:04:25,360 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 23:04:25,934 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:04:25" (1/1) ... [2018-07-23 23:04:25,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:04:25" (1/1) ... [2018-07-23 23:04:25,988 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:04:25" (1/1) ... [2018-07-23 23:04:25,988 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:04:25" (1/1) ... [2018-07-23 23:04:26,092 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:04:25" (1/1) ... [2018-07-23 23:04:26,127 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:04:25" (1/1) ... [2018-07-23 23:04:26,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:04:25" (1/1) ... [2018-07-23 23:04:26,240 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 23:04:26,241 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 23:04:26,241 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 23:04:26,241 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 23:04:26,242 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:04:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-07-23 23:04:26,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-23 23:04:26,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-23 23:04:26,323 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-23 23:04:26,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-23 23:04:26,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 23:04:26,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 23:04:26,324 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 23:04:26,324 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 23:04:26,324 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-23 23:04:26,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-23 23:04:37,865 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 23:04:37,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 11:04:37 BoogieIcfgContainer [2018-07-23 23:04:37,866 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 23:04:37,867 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 23:04:37,872 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 23:04:37,877 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 23:04:37,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 11:04:23" (1/3) ... [2018-07-23 23:04:37,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c44a9f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 11:04:37, skipping insertion in model container [2018-07-23 23:04:37,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:04:25" (2/3) ... [2018-07-23 23:04:37,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c44a9f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 11:04:37, skipping insertion in model container [2018-07-23 23:04:37,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 11:04:37" (3/3) ... [2018-07-23 23:04:37,882 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label58_true-unreach-call.c [2018-07-23 23:04:37,893 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 23:04:37,905 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 23:04:37,964 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 23:04:37,965 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 23:04:37,965 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 23:04:37,966 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 23:04:37,966 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 23:04:37,966 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 23:04:37,966 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 23:04:37,966 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 23:04:37,967 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 23:04:38,002 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-07-23 23:04:38,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-07-23 23:04:38,012 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:04:38,013 INFO L353 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] [2018-07-23 23:04:38,014 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 23:04:38,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1875924100, now seen corresponding path program 1 times [2018-07-23 23:04:38,022 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 23:04:38,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:04:38,073 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 23:04:38,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:04:38,074 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 23:04:38,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:04:38,537 WARN L169 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-07-23 23:04:38,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 23:04:38,573 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 23:04:38,574 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-23 23:04:38,574 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 23:04:38,581 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 23:04:38,597 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 23:04:38,598 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 23:04:38,602 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-07-23 23:04:51,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:04:51,075 INFO L93 Difference]: Finished difference Result 2162 states and 4007 transitions. [2018-07-23 23:04:51,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 23:04:51,077 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2018-07-23 23:04:51,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:04:51,117 INFO L225 Difference]: With dead ends: 2162 [2018-07-23 23:04:51,118 INFO L226 Difference]: Without dead ends: 1552 [2018-07-23 23:04:51,133 INFO L573 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 [2018-07-23 23:04:51,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2018-07-23 23:04:51,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1525. [2018-07-23 23:04:51,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1525 states. [2018-07-23 23:04:51,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 2696 transitions. [2018-07-23 23:04:51,300 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 2696 transitions. Word has length 52 [2018-07-23 23:04:51,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 23:04:51,301 INFO L471 AbstractCegarLoop]: Abstraction has 1525 states and 2696 transitions. [2018-07-23 23:04:51,301 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 23:04:51,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 2696 transitions. [2018-07-23 23:04:51,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-07-23 23:04:51,322 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:04:51,322 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 23:04:51,323 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 23:04:51,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1524256091, now seen corresponding path program 1 times [2018-07-23 23:04:51,325 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 23:04:51,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:04:51,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 23:04:51,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:04:51,328 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 23:04:51,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:04:51,884 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 23:04:51,884 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 23:04:51,885 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 23:04:51,885 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 23:04:51,887 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 23:04:51,887 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 23:04:51,888 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-23 23:04:51,888 INFO L87 Difference]: Start difference. First operand 1525 states and 2696 transitions. Second operand 6 states. [2018-07-23 23:05:02,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:05:02,938 INFO L93 Difference]: Finished difference Result 4431 states and 8042 transitions. [2018-07-23 23:05:02,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 23:05:02,942 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-07-23 23:05:02,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:05:02,969 INFO L225 Difference]: With dead ends: 4431 [2018-07-23 23:05:02,969 INFO L226 Difference]: Without dead ends: 2912 [2018-07-23 23:05:02,976 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-23 23:05:02,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2912 states. [2018-07-23 23:05:03,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2912 to 2878. [2018-07-23 23:05:03,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2878 states. [2018-07-23 23:05:03,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2878 states to 2878 states and 4713 transitions. [2018-07-23 23:05:03,093 INFO L78 Accepts]: Start accepts. Automaton has 2878 states and 4713 transitions. Word has length 131 [2018-07-23 23:05:03,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 23:05:03,094 INFO L471 AbstractCegarLoop]: Abstraction has 2878 states and 4713 transitions. [2018-07-23 23:05:03,094 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 23:05:03,094 INFO L276 IsEmpty]: Start isEmpty. Operand 2878 states and 4713 transitions. [2018-07-23 23:05:03,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-07-23 23:05:03,100 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:05:03,100 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 23:05:03,100 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 23:05:03,101 INFO L82 PathProgramCache]: Analyzing trace with hash -38072070, now seen corresponding path program 1 times [2018-07-23 23:05:03,101 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 23:05:03,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:05:03,102 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 23:05:03,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:05:03,103 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 23:05:03,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:05:03,362 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 23:05:03,362 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 23:05:03,363 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 23:05:03,363 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 23:05:03,364 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 23:05:03,364 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 23:05:03,364 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-23 23:05:03,365 INFO L87 Difference]: Start difference. First operand 2878 states and 4713 transitions. Second operand 6 states. [2018-07-23 23:05:13,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 23:05:13,281 INFO L93 Difference]: Finished difference Result 7154 states and 11705 transitions. [2018-07-23 23:05:13,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 23:05:13,291 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2018-07-23 23:05:13,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 23:05:13,320 INFO L225 Difference]: With dead ends: 7154 [2018-07-23 23:05:13,320 INFO L226 Difference]: Without dead ends: 4282 [2018-07-23 23:05:13,335 INFO L573 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 [2018-07-23 23:05:13,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4282 states. [2018-07-23 23:05:13,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4282 to 4240. [2018-07-23 23:05:13,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4240 states. [2018-07-23 23:05:13,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4240 states to 4240 states and 5872 transitions. [2018-07-23 23:05:13,491 INFO L78 Accepts]: Start accepts. Automaton has 4240 states and 5872 transitions. Word has length 132 [2018-07-23 23:05:13,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 23:05:13,492 INFO L471 AbstractCegarLoop]: Abstraction has 4240 states and 5872 transitions. [2018-07-23 23:05:13,492 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 23:05:13,492 INFO L276 IsEmpty]: Start isEmpty. Operand 4240 states and 5872 transitions. [2018-07-23 23:05:13,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-07-23 23:05:13,502 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 23:05:13,502 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2018-07-23 23:05:13,502 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 23:05:13,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1703108983, now seen corresponding path program 1 times [2018-07-23 23:05:13,503 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 23:05:13,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:05:13,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 23:05:13,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 23:05:13,504 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 23:05:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 23:05:13,835 WARN L169 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 23:05:14,077 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 109 proven. 53 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-23 23:05:14,078 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 23:05:14,078 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 23:05:14,079 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 220 with the following transitions: [2018-07-23 23:05:14,081 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [317], [319], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [530], [531], [535], [546], [550], [554], [558], [562], [566], [570], [573], [1570], [1574], [1578], [1584], [1588], [1590], [2306], [2307], [2308], [2310], [2311] [2018-07-23 23:05:14,145 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 23:05:14,146 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 23:05:39,636 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-23 23:06:45,431 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 23:06:45,433 INFO L272 AbstractInterpreter]: Visited 96 different actions 186 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-07-23 23:06:45,446 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 23:07:21,671 INFO L232 lantSequenceWeakener]: Weakened 217 states. On average, predicates are now at 75.74% of their original sizes. [2018-07-23 23:07:21,672 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 23:07:24,508 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 23:07:24,509 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 23:07:24,510 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [7] total 16 [2018-07-23 23:07:24,510 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 23:07:24,510 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 23:07:24,511 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 23:07:24,511 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-07-23 23:07:24,512 INFO L87 Difference]: Start difference. First operand 4240 states and 5872 transitions. Second operand 11 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown