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_label15_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 22:58:13,958 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 22:58:13,961 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 22:58:13,973 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 22:58:13,973 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 22:58:13,975 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 22:58:13,976 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 22:58:13,978 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 22:58:13,980 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 22:58:13,981 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 22:58:13,981 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 22:58:13,982 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 22:58:13,983 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 22:58:13,984 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 22:58:13,985 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 22:58:13,986 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 22:58:13,987 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 22:58:13,988 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 22:58:13,991 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 22:58:13,992 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 22:58:13,994 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 22:58:13,995 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 22:58:13,997 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 22:58:13,998 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 22:58:13,998 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 22:58:13,999 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 22:58:14,000 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 22:58:14,001 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 22:58:14,002 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 22:58:14,003 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 22:58:14,003 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 22:58:14,004 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-23 22:58:14,004 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-23 22:58:14,005 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-23 22:58:14,006 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-23 22:58:14,006 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-23 22:58:14,007 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 22:58:14,034 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 22:58:14,034 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 22:58:14,035 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 22:58:14,040 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-23 22:58:14,041 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-23 22:58:14,041 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-23 22:58:14,041 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-23 22:58:14,041 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-23 22:58:14,042 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-23 22:58:14,042 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-23 22:58:14,042 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-23 22:58:14,043 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 22:58:14,043 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 22:58:14,043 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 22:58:14,043 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 22:58:14,043 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 22:58:14,044 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 22:58:14,044 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 22:58:14,044 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 22:58:14,044 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 22:58:14,044 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 22:58:14,045 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 22:58:14,045 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 22:58:14,045 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 22:58:14,045 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 22:58:14,045 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 22:58:14,046 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 22:58:14,046 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-23 22:58:14,046 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 22:58:14,046 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 22:58:14,046 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 22:58:14,047 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 22:58:14,047 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-23 22:58:14,092 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 22:58:14,112 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 22:58:14,116 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 22:58:14,118 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 22:58:14,119 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 22:58:14,120 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label15_true-unreach-call.c [2018-07-23 22:58:14,516 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/756f9ac11/d013701d64f94831b505aecbbbfd3180/FLAGa8ffa9c55 [2018-07-23 22:58:14,979 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 22:58:14,980 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label15_true-unreach-call.c [2018-07-23 22:58:15,015 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/756f9ac11/d013701d64f94831b505aecbbbfd3180/FLAGa8ffa9c55 [2018-07-23 22:58:15,038 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/756f9ac11/d013701d64f94831b505aecbbbfd3180 [2018-07-23 22:58:15,055 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 22:58:15,057 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 22:58:15,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 22:58:15,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 22:58:15,071 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 22:58:15,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 10:58:15" (1/1) ... [2018-07-23 22:58:15,076 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@464a2cc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:58:15, skipping insertion in model container [2018-07-23 22:58:15,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 10:58:15" (1/1) ... [2018-07-23 22:58:15,382 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 22:58:16,102 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 22:58:16,123 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 22:58:16,573 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 22:58:16,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:58:16 WrapperNode [2018-07-23 22:58:16,842 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 22:58:16,843 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 22:58:16,844 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 22:58:16,844 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 22:58:16,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:58:16" (1/1) ... [2018-07-23 22:58:16,944 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:58:16" (1/1) ... [2018-07-23 22:58:17,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 22:58:17,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 22:58:17,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 22:58:17,171 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 22:58:17,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:58:16" (1/1) ... [2018-07-23 22:58:17,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:58:16" (1/1) ... [2018-07-23 22:58:17,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:58:16" (1/1) ... [2018-07-23 22:58:17,818 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:58:16" (1/1) ... [2018-07-23 22:58:17,981 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:58:16" (1/1) ... [2018-07-23 22:58:18,021 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:58:16" (1/1) ... [2018-07-23 22:58:18,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:58:16" (1/1) ... [2018-07-23 22:58:18,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 22:58:18,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 22:58:18,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 22:58:18,153 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 22:58:18,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:58:16" (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 22:58:18,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-23 22:58:18,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-23 22:58:18,235 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 22:58:18,235 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 22:58:18,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 22:58:18,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 22:58:18,235 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 22:58:18,236 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 22:58:18,236 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 22:58:18,236 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 22:58:29,307 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 22:58:29,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 10:58:29 BoogieIcfgContainer [2018-07-23 22:58:29,308 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 22:58:29,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 22:58:29,310 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 22:58:29,313 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 22:58:29,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 10:58:15" (1/3) ... [2018-07-23 22:58:29,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ea15ef8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 10:58:29, skipping insertion in model container [2018-07-23 22:58:29,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:58:16" (2/3) ... [2018-07-23 22:58:29,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ea15ef8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 10:58:29, skipping insertion in model container [2018-07-23 22:58:29,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 10:58:29" (3/3) ... [2018-07-23 22:58:29,317 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label15_true-unreach-call.c [2018-07-23 22:58:29,328 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 22:58:29,338 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 22:58:29,397 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 22:58:29,398 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 22:58:29,398 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 22:58:29,398 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 22:58:29,399 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 22:58:29,399 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 22:58:29,399 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 22:58:29,399 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 22:58:29,399 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 22:58:29,435 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-07-23 22:58:29,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-07-23 22:58:29,444 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 22:58:29,445 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] [2018-07-23 22:58:29,448 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 22:58:29,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1993767937, now seen corresponding path program 1 times [2018-07-23 22:58:29,456 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 22:58:29,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:58:29,507 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 22:58:29,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:58:29,507 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 22:58:29,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 22:58:29,943 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 22:58:29,946 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 22:58:29,947 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-23 22:58:29,947 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 22:58:29,954 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 22:58:29,971 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 22:58:29,972 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 22:58:29,975 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-07-23 22:58:41,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 22:58:41,525 INFO L93 Difference]: Finished difference Result 2164 states and 4009 transitions. [2018-07-23 22:58:41,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 22:58:41,532 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2018-07-23 22:58:41,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 22:58:41,566 INFO L225 Difference]: With dead ends: 2164 [2018-07-23 22:58:41,566 INFO L226 Difference]: Without dead ends: 1554 [2018-07-23 22:58:41,576 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 22:58:41,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2018-07-23 22:58:41,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1052. [2018-07-23 22:58:41,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2018-07-23 22:58:41,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1882 transitions. [2018-07-23 22:58:41,756 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1882 transitions. Word has length 43 [2018-07-23 22:58:41,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 22:58:41,757 INFO L471 AbstractCegarLoop]: Abstraction has 1052 states and 1882 transitions. [2018-07-23 22:58:41,757 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 22:58:41,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1882 transitions. [2018-07-23 22:58:41,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-07-23 22:58:41,767 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 22:58:41,767 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:58:41,768 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 22:58:41,768 INFO L82 PathProgramCache]: Analyzing trace with hash 268762322, now seen corresponding path program 1 times [2018-07-23 22:58:41,771 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 22:58:41,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:58:41,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 22:58:41,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:58:41,775 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 22:58:41,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 22:58:42,079 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 22:58:42,080 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 22:58:42,080 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 22:58:42,080 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 22:58:42,082 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 22:58:42,082 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 22:58:42,082 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-23 22:58:42,083 INFO L87 Difference]: Start difference. First operand 1052 states and 1882 transitions. Second operand 5 states. [2018-07-23 22:58:51,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 22:58:51,273 INFO L93 Difference]: Finished difference Result 3031 states and 5537 transitions. [2018-07-23 22:58:51,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 22:58:51,274 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2018-07-23 22:58:51,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 22:58:51,290 INFO L225 Difference]: With dead ends: 3031 [2018-07-23 22:58:51,290 INFO L226 Difference]: Without dead ends: 1985 [2018-07-23 22:58:51,295 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-23 22:58:51,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2018-07-23 22:58:51,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1959. [2018-07-23 22:58:51,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2018-07-23 22:58:51,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3239 transitions. [2018-07-23 22:58:51,362 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3239 transitions. Word has length 115 [2018-07-23 22:58:51,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 22:58:51,363 INFO L471 AbstractCegarLoop]: Abstraction has 1959 states and 3239 transitions. [2018-07-23 22:58:51,363 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 22:58:51,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3239 transitions. [2018-07-23 22:58:51,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-07-23 22:58:51,367 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 22:58:51,368 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:58:51,368 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 22:58:51,368 INFO L82 PathProgramCache]: Analyzing trace with hash -2045186319, now seen corresponding path program 1 times [2018-07-23 22:58:51,368 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 22:58:51,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:58:51,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 22:58:51,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:58:51,370 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 22:58:51,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 22:58:51,739 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 22:58:51,740 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 22:58:51,740 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 22:58:51,741 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 119 with the following transitions: [2018-07-23 22:58:51,743 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], [245], [247], [250], [258], [266], [274], [282], [290], [298], [306], [314], [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], [514], [1570], [1574], [1578], [1584], [1588], [1590], [2306], [2307], [2308], [2310], [2311] [2018-07-23 22:58:51,807 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 22:58:51,808 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 22:59:22,864 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-23 23:00:01,649 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 23:00:01,651 INFO L272 AbstractInterpreter]: Visited 82 different actions 233 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-07-23 23:00:01,676 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 23:00:03,983 INFO L232 lantSequenceWeakener]: Weakened 116 states. On average, predicates are now at 75.97% of their original sizes. [2018-07-23 23:00:03,983 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 23:00:06,333 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 23:00:06,335 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 23:00:06,335 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [7] total 16 [2018-07-23 23:00:06,336 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 23:00:06,336 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 23:00:06,337 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 23:00:06,337 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-07-23 23:00:06,339 INFO L87 Difference]: Start difference. First operand 1959 states and 3239 transitions. Second operand 11 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown