java -Xss4m -Xmx6000000000 -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 ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label38_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-21 17:50:34,114 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-21 17:50:34,116 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-21 17:50:34,127 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-21 17:50:34,128 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-21 17:50:34,129 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-21 17:50:34,130 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-21 17:50:34,135 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-21 17:50:34,139 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-21 17:50:34,140 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-21 17:50:34,147 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-21 17:50:34,147 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-21 17:50:34,149 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-21 17:50:34,149 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-21 17:50:34,152 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-21 17:50:34,152 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-21 17:50:34,153 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-21 17:50:34,155 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-21 17:50:34,157 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-21 17:50:34,158 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-21 17:50:34,159 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-21 17:50:34,160 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-21 17:50:34,162 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-21 17:50:34,163 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-21 17:50:34,163 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-21 17:50:34,164 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-21 17:50:34,165 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-21 17:50:34,165 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-21 17:50:34,166 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-21 17:50:34,167 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-21 17:50:34,167 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-21 17:50:34,168 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-21 17:50:34,168 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-21 17:50:34,168 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-21 17:50:34,169 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-21 17:50:34,170 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-21 17:50:34,170 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-07-21 17:50:34,187 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-21 17:50:34,187 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-21 17:50:34,188 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-21 17:50:34,188 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-21 17:50:34,188 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-21 17:50:34,188 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-21 17:50:34,189 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-21 17:50:34,189 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-21 17:50:34,189 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-21 17:50:34,189 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-21 17:50:34,189 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-07-21 17:50:34,190 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-21 17:50:34,190 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-21 17:50:34,191 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-21 17:50:34,191 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-21 17:50:34,191 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-21 17:50:34,191 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-21 17:50:34,191 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-21 17:50:34,192 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-21 17:50:34,192 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-21 17:50:34,192 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-21 17:50:34,192 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-21 17:50:34,192 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-21 17:50:34,192 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-21 17:50:34,193 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-21 17:50:34,193 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-21 17:50:34,193 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-21 17:50:34,193 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-21 17:50:34,193 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-21 17:50:34,194 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-21 17:50:34,194 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-21 17:50:34,194 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-21 17:50:34,194 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-21 17:50:34,194 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-21 17:50:34,194 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-21 17:50:34,239 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-21 17:50:34,259 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-21 17:50:34,266 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-21 17:50:34,268 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-21 17:50:34,268 INFO L276 PluginConnector]: CDTParser initialized [2018-07-21 17:50:34,269 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label38_true-unreach-call_false-termination.c [2018-07-21 17:50:34,668 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/b68ffb49e/f98dcf70d6274f4db7431a098d1b5a9b/FLAGf51db7a32 [2018-07-21 17:50:34,945 INFO L276 CDTParser]: Found 1 translation units. [2018-07-21 17:50:34,946 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label38_true-unreach-call_false-termination.c [2018-07-21 17:50:34,976 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/b68ffb49e/f98dcf70d6274f4db7431a098d1b5a9b/FLAGf51db7a32 [2018-07-21 17:50:34,999 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/b68ffb49e/f98dcf70d6274f4db7431a098d1b5a9b [2018-07-21 17:50:35,012 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-21 17:50:35,021 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-21 17:50:35,023 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-21 17:50:35,023 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-21 17:50:35,033 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-21 17:50:35,034 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:50:35" (1/1) ... [2018-07-21 17:50:35,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4013a1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:50:35, skipping insertion in model container [2018-07-21 17:50:35,038 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:50:35" (1/1) ... [2018-07-21 17:50:35,264 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-21 17:50:35,608 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 17:50:35,630 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-21 17:50:35,879 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 17:50:35,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:50:35 WrapperNode [2018-07-21 17:50:35,944 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-21 17:50:35,945 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-21 17:50:35,945 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-21 17:50:35,945 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-21 17:50:35,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:50:35" (1/1) ... [2018-07-21 17:50:35,991 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:50:35" (1/1) ... [2018-07-21 17:50:36,097 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-21 17:50:36,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-21 17:50:36,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-21 17:50:36,098 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-21 17:50:36,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:50:35" (1/1) ... [2018-07-21 17:50:36,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:50:35" (1/1) ... [2018-07-21 17:50:36,121 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:50:35" (1/1) ... [2018-07-21 17:50:36,121 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:50:35" (1/1) ... [2018-07-21 17:50:36,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:50:35" (1/1) ... [2018-07-21 17:50:36,204 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:50:35" (1/1) ... [2018-07-21 17:50:36,267 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:50:35" (1/1) ... [2018-07-21 17:50:36,288 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-21 17:50:36,290 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-21 17:50:36,290 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-21 17:50:36,290 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-21 17:50:36,291 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:50:35" (1/1) ... No working directory specified, using /storage/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 [2018-07-21 17:50:36,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-21 17:50:36,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-21 17:50:36,530 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output [2018-07-21 17:50:36,530 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output [2018-07-21 17:50:36,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-21 17:50:36,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-21 17:50:36,532 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-21 17:50:36,532 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-21 17:50:40,603 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-21 17:50:40,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:50:40 BoogieIcfgContainer [2018-07-21 17:50:40,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-21 17:50:40,606 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-21 17:50:40,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-21 17:50:40,609 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-21 17:50:40,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:50:35" (1/3) ... [2018-07-21 17:50:40,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e356be9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:50:40, skipping insertion in model container [2018-07-21 17:50:40,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:50:35" (2/3) ... [2018-07-21 17:50:40,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e356be9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:50:40, skipping insertion in model container [2018-07-21 17:50:40,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:50:40" (3/3) ... [2018-07-21 17:50:40,620 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label38_true-unreach-call_false-termination.c [2018-07-21 17:50:40,631 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-21 17:50:40,646 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-21 17:50:40,705 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-21 17:50:40,706 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-21 17:50:40,707 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-21 17:50:40,707 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-21 17:50:40,707 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-21 17:50:40,707 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-21 17:50:40,707 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-21 17:50:40,707 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-21 17:50:40,708 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-21 17:50:40,735 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-07-21 17:50:40,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-07-21 17:50:40,744 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 17:50:40,746 INFO L358 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 17:50:40,746 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 17:50:40,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1456283993, now seen corresponding path program 1 times [2018-07-21 17:50:40,754 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 17:50:40,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:50:40,796 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 17:50:40,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:50:40,796 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 17:50:40,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 17:50:41,231 WARN L169 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-21 17:50:41,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 17:50:41,264 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 17:50:41,264 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-21 17:50:41,264 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 17:50:41,268 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-21 17:50:41,285 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-21 17:50:41,286 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 17:50:41,289 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-07-21 17:50:42,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 17:50:42,716 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-07-21 17:50:42,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-21 17:50:42,719 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2018-07-21 17:50:42,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 17:50:42,740 INFO L225 Difference]: With dead ends: 691 [2018-07-21 17:50:42,740 INFO L226 Difference]: Without dead ends: 434 [2018-07-21 17:50:42,748 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 17:50:42,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-07-21 17:50:42,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-07-21 17:50:42,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-07-21 17:50:42,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 773 transitions. [2018-07-21 17:50:42,838 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 773 transitions. Word has length 57 [2018-07-21 17:50:42,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 17:50:42,839 INFO L471 AbstractCegarLoop]: Abstraction has 434 states and 773 transitions. [2018-07-21 17:50:42,839 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-21 17:50:42,840 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 773 transitions. [2018-07-21 17:50:42,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-07-21 17:50:42,848 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 17:50:42,848 INFO L358 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, 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] [2018-07-21 17:50:42,848 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 17:50:42,849 INFO L82 PathProgramCache]: Analyzing trace with hash 312004812, now seen corresponding path program 1 times [2018-07-21 17:50:42,849 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 17:50:42,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:50:42,850 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 17:50:42,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:50:42,851 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 17:50:42,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 17:50:43,218 WARN L169 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-21 17:50:43,365 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 17:50:43,366 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 17:50:43,366 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-21 17:50:43,366 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 17:50:43,369 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-21 17:50:43,369 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-21 17:50:43,369 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-21 17:50:43,370 INFO L87 Difference]: Start difference. First operand 434 states and 773 transitions. Second operand 6 states. [2018-07-21 17:50:46,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 17:50:46,625 INFO L93 Difference]: Finished difference Result 1234 states and 2253 transitions. [2018-07-21 17:50:46,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-21 17:50:46,627 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-07-21 17:50:46,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 17:50:46,638 INFO L225 Difference]: With dead ends: 1234 [2018-07-21 17:50:46,638 INFO L226 Difference]: Without dead ends: 806 [2018-07-21 17:50:46,645 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-21 17:50:46,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2018-07-21 17:50:46,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 797. [2018-07-21 17:50:46,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 797 states. [2018-07-21 17:50:46,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1302 transitions. [2018-07-21 17:50:46,719 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1302 transitions. Word has length 139 [2018-07-21 17:50:46,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 17:50:46,720 INFO L471 AbstractCegarLoop]: Abstraction has 797 states and 1302 transitions. [2018-07-21 17:50:46,720 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-21 17:50:46,720 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1302 transitions. [2018-07-21 17:50:46,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-07-21 17:50:46,726 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 17:50:46,727 INFO L358 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, 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] [2018-07-21 17:50:46,727 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 17:50:46,727 INFO L82 PathProgramCache]: Analyzing trace with hash -617951952, now seen corresponding path program 1 times [2018-07-21 17:50:46,727 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 17:50:46,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:50:46,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 17:50:46,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:50:46,729 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 17:50:46,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 17:50:47,077 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 17:50:47,077 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 17:50:47,077 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-21 17:50:47,077 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 17:50:47,078 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-21 17:50:47,078 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-21 17:50:47,079 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-21 17:50:47,079 INFO L87 Difference]: Start difference. First operand 797 states and 1302 transitions. Second operand 6 states. [2018-07-21 17:50:51,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 17:50:51,192 INFO L93 Difference]: Finished difference Result 2885 states and 4804 transitions. [2018-07-21 17:50:51,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-21 17:50:51,193 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2018-07-21 17:50:51,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 17:50:51,209 INFO L225 Difference]: With dead ends: 2885 [2018-07-21 17:50:51,209 INFO L226 Difference]: Without dead ends: 2094 [2018-07-21 17:50:51,215 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-07-21 17:50:51,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2094 states. [2018-07-21 17:50:51,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2094 to 1997. [2018-07-21 17:50:51,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1997 states. [2018-07-21 17:50:51,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1997 states to 1997 states and 2862 transitions. [2018-07-21 17:50:51,320 INFO L78 Accepts]: Start accepts. Automaton has 1997 states and 2862 transitions. Word has length 141 [2018-07-21 17:50:51,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 17:50:51,321 INFO L471 AbstractCegarLoop]: Abstraction has 1997 states and 2862 transitions. [2018-07-21 17:50:51,321 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-21 17:50:51,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1997 states and 2862 transitions. [2018-07-21 17:50:51,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-07-21 17:50:51,331 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 17:50:51,332 INFO L358 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 17:50:51,332 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 17:50:51,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1357507066, now seen corresponding path program 1 times [2018-07-21 17:50:51,332 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 17:50:51,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:50:51,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 17:50:51,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:50:51,334 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 17:50:51,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 17:50:51,650 WARN L169 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-21 17:50:51,886 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 100 proven. 66 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-21 17:50:51,886 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 17:50:51,886 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-21 17:50:51,889 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 213 with the following transitions: [2018-07-21 17:50:51,891 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], [321], [329], [337], [345], [353], [357], [359], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-07-21 17:50:51,977 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-21 17:50:51,978 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-21 17:50:58,639 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-21 17:50:58,641 INFO L272 AbstractInterpreter]: Visited 89 different actions 89 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-07-21 17:50:58,673 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-21 17:51:07,330 INFO L232 lantSequenceWeakener]: Weakened 204 states. On average, predicates are now at 78.24% of their original sizes. [2018-07-21 17:51:07,331 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-21 17:51:08,015 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-21 17:51:08,016 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-21 17:51:08,016 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-07-21 17:51:08,016 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 17:51:08,017 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-21 17:51:08,017 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-21 17:51:08,017 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-07-21 17:51:08,018 INFO L87 Difference]: Start difference. First operand 1997 states and 2862 transitions. Second operand 7 states. [2018-07-21 17:51:23,100 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-21 17:52:02,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 17:52:02,710 INFO L93 Difference]: Finished difference Result 4173 states and 5938 transitions. [2018-07-21 17:52:02,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-21 17:52:02,711 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 212 [2018-07-21 17:52:02,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 17:52:02,725 INFO L225 Difference]: With dead ends: 4173 [2018-07-21 17:52:02,725 INFO L226 Difference]: Without dead ends: 2182 [2018-07-21 17:52:02,731 INFO L578 BasicCegarLoop]: 2 DeclaredPredicates, 212 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-07-21 17:52:02,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2182 states. [2018-07-21 17:52:02,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2182 to 2180. [2018-07-21 17:52:02,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2180 states. [2018-07-21 17:52:02,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2180 states to 2180 states and 3053 transitions. [2018-07-21 17:52:02,822 INFO L78 Accepts]: Start accepts. Automaton has 2180 states and 3053 transitions. Word has length 212 [2018-07-21 17:52:02,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 17:52:02,822 INFO L471 AbstractCegarLoop]: Abstraction has 2180 states and 3053 transitions. [2018-07-21 17:52:02,822 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-21 17:52:02,823 INFO L276 IsEmpty]: Start isEmpty. Operand 2180 states and 3053 transitions. [2018-07-21 17:52:02,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-07-21 17:52:02,829 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 17:52:02,830 INFO L358 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, 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] [2018-07-21 17:52:02,830 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 17:52:02,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1168084738, now seen corresponding path program 1 times [2018-07-21 17:52:02,832 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 17:52:02,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:52:02,834 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 17:52:02,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:52:02,834 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 17:52:02,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 17:52:03,410 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 17:52:03,410 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 17:52:03,410 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-21 17:52:03,410 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 227 with the following transitions: [2018-07-21 17:52:03,411 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], [321], [329], [337], [345], [353], [357], [359], [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], [531], [535], [539], [543], [547], [550], [551], [554], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-07-21 17:52:03,417 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-21 17:52:03,417 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-21 17:52:11,626 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-21 17:52:11,626 INFO L272 AbstractInterpreter]: Visited 93 different actions 182 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-07-21 17:52:11,633 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-21 17:52:14,614 INFO L232 lantSequenceWeakener]: Weakened 224 states. On average, predicates are now at 78.2% of their original sizes. [2018-07-21 17:52:14,615 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-21 17:52:27,208 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-21 17:52:27,208 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-21 17:52:27,208 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [12] total 25 [2018-07-21 17:52:27,208 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 17:52:27,209 INFO L450 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-21 17:52:27,209 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-21 17:52:27,209 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2018-07-21 17:52:27,210 INFO L87 Difference]: Start difference. First operand 2180 states and 3053 transitions. Second operand 15 states. [2018-07-21 17:52:38,038 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-21 17:53:07,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 17:53:07,554 INFO L93 Difference]: Finished difference Result 4543 states and 6539 transitions. [2018-07-21 17:53:07,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-21 17:53:07,554 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 226 [2018-07-21 17:53:07,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 17:53:07,567 INFO L225 Difference]: With dead ends: 4543 [2018-07-21 17:53:07,568 INFO L226 Difference]: Without dead ends: 2552 [2018-07-21 17:53:07,575 INFO L578 BasicCegarLoop]: 2 DeclaredPredicates, 234 GetRequests, 162 SyntacticMatches, 50 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2018-07-21 17:53:07,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2552 states. [2018-07-21 17:53:07,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2552 to 2549. [2018-07-21 17:53:07,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2549 states. [2018-07-21 17:53:07,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2549 states to 2549 states and 3433 transitions. [2018-07-21 17:53:07,675 INFO L78 Accepts]: Start accepts. Automaton has 2549 states and 3433 transitions. Word has length 226 [2018-07-21 17:53:07,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 17:53:07,676 INFO L471 AbstractCegarLoop]: Abstraction has 2549 states and 3433 transitions. [2018-07-21 17:53:07,676 INFO L472 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-21 17:53:07,676 INFO L276 IsEmpty]: Start isEmpty. Operand 2549 states and 3433 transitions. [2018-07-21 17:53:07,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-07-21 17:53:07,683 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 17:53:07,683 INFO L358 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, 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, 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] [2018-07-21 17:53:07,684 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 17:53:07,684 INFO L82 PathProgramCache]: Analyzing trace with hash 2120173293, now seen corresponding path program 1 times [2018-07-21 17:53:07,684 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 17:53:07,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:53:07,685 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 17:53:07,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:53:07,685 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 17:53:07,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 17:53:08,031 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 183 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 17:53:08,031 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 17:53:08,031 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-21 17:53:08,031 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 254 with the following transitions: [2018-07-21 17:53:08,032 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], [321], [329], [337], [345], [353], [357], [359], [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], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-07-21 17:53:08,037 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-21 17:53:08,038 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-21 17:53:23,618 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-21 17:53:23,618 INFO L272 AbstractInterpreter]: Visited 119 different actions 354 times. Merged at 7 different actions 19 times. Never widened. Found 4 fixpoints after 1 different actions. Largest state had 24 variables. [2018-07-21 17:53:23,625 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-21 17:53:26,884 INFO L232 lantSequenceWeakener]: Weakened 251 states. On average, predicates are now at 78.08% of their original sizes. [2018-07-21 17:53:26,886 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-21 17:53:31,325 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-21 17:53:31,325 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-21 17:53:31,325 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [6] total 19 [2018-07-21 17:53:31,326 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 17:53:31,326 INFO L450 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-21 17:53:31,326 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-21 17:53:31,327 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2018-07-21 17:53:31,327 INFO L87 Difference]: Start difference. First operand 2549 states and 3433 transitions. Second operand 15 states. [2018-07-21 17:53:42,323 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-07-21 17:53:58,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-07-21 17:53:58,864 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-21 17:53:58,869 WARN L202 ceAbstractionStarter]: Timeout [2018-07-21 17:53:58,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 05:53:58 BoogieIcfgContainer [2018-07-21 17:53:58,870 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-21 17:53:58,871 INFO L168 Benchmark]: Toolchain (without parser) took 203858.25 ms. Allocated memory was 306.7 MB in the beginning and 2.4 GB in the end (delta: 2.0 GB). Free memory was 250.1 MB in the beginning and 980.0 MB in the end (delta: -729.9 MB). Peak memory consumption was 2.2 GB. Max. memory is 5.3 GB. [2018-07-21 17:53:58,872 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 306.7 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-07-21 17:53:58,872 INFO L168 Benchmark]: CACSL2BoogieTranslator took 921.32 ms. Allocated memory is still 306.7 MB. Free memory was 249.1 MB in the beginning and 204.0 MB in the end (delta: 45.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 5.3 GB. [2018-07-21 17:53:58,873 INFO L168 Benchmark]: Boogie Procedure Inliner took 152.47 ms. Allocated memory is still 306.7 MB. Free memory was 204.0 MB in the beginning and 194.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-07-21 17:53:58,873 INFO L168 Benchmark]: Boogie Preprocessor took 191.94 ms. Allocated memory was 306.7 MB in the beginning and 342.9 MB in the end (delta: 36.2 MB). Free memory was 194.1 MB in the beginning and 298.3 MB in the end (delta: -104.2 MB). Peak memory consumption was 28.6 MB. Max. memory is 5.3 GB. [2018-07-21 17:53:58,874 INFO L168 Benchmark]: RCFGBuilder took 4314.29 ms. Allocated memory was 342.9 MB in the beginning and 448.3 MB in the end (delta: 105.4 MB). Free memory was 298.3 MB in the beginning and 281.1 MB in the end (delta: 17.1 MB). Peak memory consumption was 138.7 MB. Max. memory is 5.3 GB. [2018-07-21 17:53:58,874 INFO L168 Benchmark]: TraceAbstraction took 198264.25 ms. Allocated memory was 448.3 MB in the beginning and 2.4 GB in the end (delta: 1.9 GB). Free memory was 281.1 MB in the beginning and 980.0 MB in the end (delta: -698.9 MB). Peak memory consumption was 2.1 GB. Max. memory is 5.3 GB. [2018-07-21 17:53:58,879 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 306.7 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 921.32 ms. Allocated memory is still 306.7 MB. Free memory was 249.1 MB in the beginning and 204.0 MB in the end (delta: 45.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 5.3 GB. * Boogie Procedure Inliner took 152.47 ms. Allocated memory is still 306.7 MB. Free memory was 204.0 MB in the beginning and 194.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 191.94 ms. Allocated memory was 306.7 MB in the beginning and 342.9 MB in the end (delta: 36.2 MB). Free memory was 194.1 MB in the beginning and 298.3 MB in the end (delta: -104.2 MB). Peak memory consumption was 28.6 MB. Max. memory is 5.3 GB. * RCFGBuilder took 4314.29 ms. Allocated memory was 342.9 MB in the beginning and 448.3 MB in the end (delta: 105.4 MB). Free memory was 298.3 MB in the beginning and 281.1 MB in the end (delta: 17.1 MB). Peak memory consumption was 138.7 MB. Max. memory is 5.3 GB. * TraceAbstraction took 198264.25 ms. Allocated memory was 448.3 MB in the beginning and 2.4 GB in the end (delta: 1.9 GB). Free memory was 281.1 MB in the beginning and 980.0 MB in the end (delta: -698.9 MB). Peak memory consumption was 2.1 GB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 154]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 154). Cancelled while BasicCegarLoop was constructing difference of abstraction (2549states) and interpolant automaton (currently 22 states, 15 states before enhancement), while ReachableStatesComputation was computing reachable states (2896 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 198.1s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 131.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 863 SDtfs, 6222 SDslu, 1308 SDs, 0 SdLazy, 8146 SolverSat, 1725 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 81.9s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 742 GetRequests, 550 SyntacticMatches, 119 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 830 ImplicationChecksByTransitivity, 19.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2549occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 30.6s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9951050092686213 AbsIntWeakeningRatio, 0.11337209302325581 AbsIntAvgWeakeningVarsNumRemoved, 190.13226744186048 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 111 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 1028 NumberOfCodeBlocks, 1028 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1022 ConstructedInterpolants, 0 QuantifiedInterpolants, 1474628 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 570/640 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem14_label38_true-unreach-call_false-termination.c_svcomp-Reach-64bit-Taipan_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-21_17-53-58-898.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem14_label38_true-unreach-call_false-termination.c_svcomp-Reach-64bit-Taipan_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-21_17-53-58-898.csv Completed graceful shutdown