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/Problem10_label58_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 19:15:47,064 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 19:15:47,067 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 19:15:47,079 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 19:15:47,079 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 19:15:47,080 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 19:15:47,082 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 19:15:47,086 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 19:15:47,093 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 19:15:47,094 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 19:15:47,097 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 19:15:47,098 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 19:15:47,099 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 19:15:47,100 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 19:15:47,105 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 19:15:47,106 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 19:15:47,108 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 19:15:47,111 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 19:15:47,113 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 19:15:47,118 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 19:15:47,119 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 19:15:47,121 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 19:15:47,124 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 19:15:47,124 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 19:15:47,124 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 19:15:47,125 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 19:15:47,126 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 19:15:47,126 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 19:15:47,127 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 19:15:47,128 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 19:15:47,128 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 19:15:47,129 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-23 19:15:47,129 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-23 19:15:47,129 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-23 19:15:47,130 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-23 19:15:47,131 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-23 19:15:47,131 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 19:15:47,148 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 19:15:47,148 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 19:15:47,149 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 19:15:47,149 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-23 19:15:47,150 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-23 19:15:47,150 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-23 19:15:47,150 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-23 19:15:47,150 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-23 19:15:47,150 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-23 19:15:47,151 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-23 19:15:47,151 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-23 19:15:47,151 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 19:15:47,152 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 19:15:47,152 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 19:15:47,152 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 19:15:47,152 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 19:15:47,152 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 19:15:47,153 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 19:15:47,153 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 19:15:47,153 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 19:15:47,153 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 19:15:47,153 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 19:15:47,154 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 19:15:47,154 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 19:15:47,154 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 19:15:47,154 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 19:15:47,155 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 19:15:47,155 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-23 19:15:47,155 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 19:15:47,155 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 19:15:47,155 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 19:15:47,155 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 19:15:47,156 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-23 19:15:47,218 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 19:15:47,233 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 19:15:47,239 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 19:15:47,240 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 19:15:47,241 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 19:15:47,241 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label58_false-unreach-call.c [2018-07-23 19:15:47,632 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ffac4916/a326d5d486014f5e8ec5ff43daf929b9/FLAGb84110818 [2018-07-23 19:15:47,894 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 19:15:47,896 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label58_false-unreach-call.c [2018-07-23 19:15:47,917 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ffac4916/a326d5d486014f5e8ec5ff43daf929b9/FLAGb84110818 [2018-07-23 19:15:47,931 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ffac4916/a326d5d486014f5e8ec5ff43daf929b9 [2018-07-23 19:15:47,943 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 19:15:47,944 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 19:15:47,948 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 19:15:47,948 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 19:15:47,955 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 19:15:47,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 07:15:47" (1/1) ... [2018-07-23 19:15:47,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c0fc1a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:15:47, skipping insertion in model container [2018-07-23 19:15:47,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 07:15:47" (1/1) ... [2018-07-23 19:15:48,152 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 19:15:48,393 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 19:15:48,409 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 19:15:48,543 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 19:15:48,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:15:48 WrapperNode [2018-07-23 19:15:48,597 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 19:15:48,598 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 19:15:48,598 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 19:15:48,598 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 19:15:48,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:15:48" (1/1) ... [2018-07-23 19:15:48,643 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:15:48" (1/1) ... [2018-07-23 19:15:48,710 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 19:15:48,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 19:15:48,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 19:15:48,711 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 19:15:48,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:15:48" (1/1) ... [2018-07-23 19:15:48,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:15:48" (1/1) ... [2018-07-23 19:15:48,727 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:15:48" (1/1) ... [2018-07-23 19:15:48,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:15:48" (1/1) ... [2018-07-23 19:15:48,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:15:48" (1/1) ... [2018-07-23 19:15:48,768 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:15:48" (1/1) ... [2018-07-23 19:15:48,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:15:48" (1/1) ... [2018-07-23 19:15:48,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 19:15:48,788 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 19:15:48,788 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 19:15:48,788 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 19:15:48,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:15:48" (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 19:15:49,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-23 19:15:49,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-23 19:15:49,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 19:15:49,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 19:15:49,020 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 19:15:49,020 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 19:15:49,020 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-23 19:15:49,020 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-23 19:15:53,207 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 19:15:53,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 07:15:53 BoogieIcfgContainer [2018-07-23 19:15:53,209 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 19:15:53,210 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 19:15:53,210 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 19:15:53,213 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 19:15:53,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 07:15:47" (1/3) ... [2018-07-23 19:15:53,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70b659cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 07:15:53, skipping insertion in model container [2018-07-23 19:15:53,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 07:15:48" (2/3) ... [2018-07-23 19:15:53,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70b659cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 07:15:53, skipping insertion in model container [2018-07-23 19:15:53,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 07:15:53" (3/3) ... [2018-07-23 19:15:53,217 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label58_false-unreach-call.c [2018-07-23 19:15:53,228 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 19:15:53,237 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 19:15:53,292 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 19:15:53,293 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 19:15:53,293 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 19:15:53,293 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 19:15:53,293 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 19:15:53,293 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 19:15:53,294 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 19:15:53,294 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 19:15:53,294 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 19:15:53,326 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-07-23 19:15:53,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-07-23 19:15:53,333 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:15:53,334 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] [2018-07-23 19:15:53,335 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:15:53,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1155478332, now seen corresponding path program 1 times [2018-07-23 19:15:53,344 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:15:53,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:15:53,395 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:15:53,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:15:53,395 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:15:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:15:53,729 WARN L169 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 19:15:53,830 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 19:15:53,834 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 19:15:53,834 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 19:15:53,834 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:15:53,842 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 19:15:53,858 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 19:15:53,859 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 19:15:53,861 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-07-23 19:15:55,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:15:55,729 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-07-23 19:15:55,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 19:15:55,731 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2018-07-23 19:15:55,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:15:55,751 INFO L225 Difference]: With dead ends: 574 [2018-07-23 19:15:55,751 INFO L226 Difference]: Without dead ends: 356 [2018-07-23 19:15:55,759 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 19:15:55,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-07-23 19:15:55,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-07-23 19:15:55,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-07-23 19:15:55,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 609 transitions. [2018-07-23 19:15:55,844 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 609 transitions. Word has length 20 [2018-07-23 19:15:55,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:15:55,844 INFO L471 AbstractCegarLoop]: Abstraction has 356 states and 609 transitions. [2018-07-23 19:15:55,845 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 19:15:55,845 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 609 transitions. [2018-07-23 19:15:55,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-07-23 19:15:55,851 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:15:55,851 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 19:15:55,851 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:15:55,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1943528644, now seen corresponding path program 1 times [2018-07-23 19:15:55,852 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:15:55,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:15:55,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:15:55,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:15:55,854 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:15:55,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:15:56,228 WARN L169 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 19:15:56,381 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 19:15:56,382 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 19:15:56,382 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 19:15:56,382 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:15:56,385 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 19:15:56,386 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 19:15:56,386 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-23 19:15:56,386 INFO L87 Difference]: Start difference. First operand 356 states and 609 transitions. Second operand 6 states. [2018-07-23 19:15:58,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:15:58,296 INFO L93 Difference]: Finished difference Result 867 states and 1507 transitions. [2018-07-23 19:15:58,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 19:15:58,297 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 94 [2018-07-23 19:15:58,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:15:58,302 INFO L225 Difference]: With dead ends: 867 [2018-07-23 19:15:58,303 INFO L226 Difference]: Without dead ends: 517 [2018-07-23 19:15:58,305 INFO L573 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 [2018-07-23 19:15:58,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2018-07-23 19:15:58,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 508. [2018-07-23 19:15:58,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 508 states. [2018-07-23 19:15:58,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 831 transitions. [2018-07-23 19:15:58,351 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 831 transitions. Word has length 94 [2018-07-23 19:15:58,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:15:58,352 INFO L471 AbstractCegarLoop]: Abstraction has 508 states and 831 transitions. [2018-07-23 19:15:58,352 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 19:15:58,352 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 831 transitions. [2018-07-23 19:15:58,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-07-23 19:15:58,356 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:15:58,356 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 19:15:58,357 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:15:58,357 INFO L82 PathProgramCache]: Analyzing trace with hash -636614576, now seen corresponding path program 1 times [2018-07-23 19:15:58,357 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:15:58,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:15:58,359 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:15:58,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:15:58,359 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:15:58,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:15:58,538 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 19:15:58,539 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 19:15:58,539 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-23 19:15:58,539 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:15:58,540 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 19:15:58,540 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 19:15:58,540 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 19:15:58,541 INFO L87 Difference]: Start difference. First operand 508 states and 831 transitions. Second operand 4 states. [2018-07-23 19:16:04,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:16:04,285 INFO L93 Difference]: Finished difference Result 1742 states and 2994 transitions. [2018-07-23 19:16:04,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 19:16:04,286 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2018-07-23 19:16:04,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:16:04,295 INFO L225 Difference]: With dead ends: 1742 [2018-07-23 19:16:04,296 INFO L226 Difference]: Without dead ends: 1240 [2018-07-23 19:16:04,301 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 19:16:04,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2018-07-23 19:16:04,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1240. [2018-07-23 19:16:04,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1240 states. [2018-07-23 19:16:04,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1857 transitions. [2018-07-23 19:16:04,370 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1857 transitions. Word has length 100 [2018-07-23 19:16:04,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:16:04,371 INFO L471 AbstractCegarLoop]: Abstraction has 1240 states and 1857 transitions. [2018-07-23 19:16:04,371 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 19:16:04,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1857 transitions. [2018-07-23 19:16:04,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-07-23 19:16:04,384 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:16:04,385 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:16:04,385 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:16:04,385 INFO L82 PathProgramCache]: Analyzing trace with hash 295237492, now seen corresponding path program 1 times [2018-07-23 19:16:04,385 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:16:04,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:16:04,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:16:04,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:16:04,387 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:16:04,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:16:04,802 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 19:16:04,802 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 19:16:04,803 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-23 19:16:04,803 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:16:04,804 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 19:16:04,804 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 19:16:04,806 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-23 19:16:04,806 INFO L87 Difference]: Start difference. First operand 1240 states and 1857 transitions. Second operand 5 states. [2018-07-23 19:16:08,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:16:08,367 INFO L93 Difference]: Finished difference Result 4307 states and 6768 transitions. [2018-07-23 19:16:08,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-23 19:16:08,368 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2018-07-23 19:16:08,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:16:08,394 INFO L225 Difference]: With dead ends: 4307 [2018-07-23 19:16:08,394 INFO L226 Difference]: Without dead ends: 3073 [2018-07-23 19:16:08,411 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-23 19:16:08,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3073 states. [2018-07-23 19:16:08,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3073 to 3026. [2018-07-23 19:16:08,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3026 states. [2018-07-23 19:16:08,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3026 states to 3026 states and 4309 transitions. [2018-07-23 19:16:08,549 INFO L78 Accepts]: Start accepts. Automaton has 3026 states and 4309 transitions. Word has length 162 [2018-07-23 19:16:08,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:16:08,550 INFO L471 AbstractCegarLoop]: Abstraction has 3026 states and 4309 transitions. [2018-07-23 19:16:08,550 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 19:16:08,550 INFO L276 IsEmpty]: Start isEmpty. Operand 3026 states and 4309 transitions. [2018-07-23 19:16:08,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-07-23 19:16:08,565 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:16:08,566 INFO L353 BasicCegarLoop]: trace histogram [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, 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] [2018-07-23 19:16:08,566 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:16:08,567 INFO L82 PathProgramCache]: Analyzing trace with hash 710821640, now seen corresponding path program 1 times [2018-07-23 19:16:08,568 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:16:08,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:16:08,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:16:08,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:16:08,569 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:16:08,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:16:09,149 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 26 proven. 86 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-23 19:16:09,150 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 19:16:09,150 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 19:16:09,152 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 209 with the following transitions: [2018-07-23 19:16:09,156 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [9], [15], [19], [21], [26], [33], [41], [49], [57], [65], [73], [81], [85], [87], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [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], [498], [506], [514], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [602], [603], [607], [611], [615], [619], [623], [626], [816], [817], [818], [819], [821], [822] [2018-07-23 19:16:09,266 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 19:16:09,266 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 19:16:16,387 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 19:16:16,389 INFO L272 AbstractInterpreter]: Visited 102 different actions 102 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-07-23 19:16:16,437 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 19:16:20,737 INFO L232 lantSequenceWeakener]: Weakened 200 states. On average, predicates are now at 72.8% of their original sizes. [2018-07-23 19:16:20,737 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 19:16:21,258 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 19:16:21,259 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 19:16:21,259 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-07-23 19:16:21,260 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:16:21,260 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 19:16:21,261 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 19:16:21,261 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-07-23 19:16:21,263 INFO L87 Difference]: Start difference. First operand 3026 states and 4309 transitions. Second operand 7 states. [2018-07-23 19:16:23,700 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-23 19:16:36,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:16:36,280 INFO L93 Difference]: Finished difference Result 6192 states and 8827 transitions. [2018-07-23 19:16:36,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 19:16:36,280 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 208 [2018-07-23 19:16:36,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:16:36,309 INFO L225 Difference]: With dead ends: 6192 [2018-07-23 19:16:36,310 INFO L226 Difference]: Without dead ends: 3172 [2018-07-23 19:16:36,330 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 208 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-07-23 19:16:36,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3172 states. [2018-07-23 19:16:36,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3172 to 3170. [2018-07-23 19:16:36,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3170 states. [2018-07-23 19:16:36,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3170 states to 3170 states and 4462 transitions. [2018-07-23 19:16:36,452 INFO L78 Accepts]: Start accepts. Automaton has 3170 states and 4462 transitions. Word has length 208 [2018-07-23 19:16:36,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:16:36,454 INFO L471 AbstractCegarLoop]: Abstraction has 3170 states and 4462 transitions. [2018-07-23 19:16:36,455 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 19:16:36,455 INFO L276 IsEmpty]: Start isEmpty. Operand 3170 states and 4462 transitions. [2018-07-23 19:16:36,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-07-23 19:16:36,468 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:16:36,468 INFO L353 BasicCegarLoop]: trace histogram [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, 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, 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 19:16:36,469 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:16:36,469 INFO L82 PathProgramCache]: Analyzing trace with hash -711059064, now seen corresponding path program 1 times [2018-07-23 19:16:36,469 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:16:36,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:16:36,471 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:16:36,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:16:36,471 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:16:36,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:16:36,799 WARN L169 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 19:16:37,225 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 27 proven. 6 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-07-23 19:16:37,225 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 19:16:37,225 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 19:16:37,226 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 243 with the following transitions: [2018-07-23 19:16:37,226 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [9], [15], [19], [21], [26], [33], [41], [49], [57], [65], [73], [81], [85], [87], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [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], [498], [506], [514], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [558], [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], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [806], [816], [817], [818], [819], [821], [822] [2018-07-23 19:16:37,235 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 19:16:37,235 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 19:16:52,082 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 19:16:52,083 INFO L272 AbstractInterpreter]: Visited 150 different actions 293 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-07-23 19:16:52,094 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 19:16:56,442 INFO L232 lantSequenceWeakener]: Weakened 240 states. On average, predicates are now at 72.84% of their original sizes. [2018-07-23 19:16:56,443 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 19:16:57,999 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 19:16:57,999 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 19:16:58,000 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [8] total 19 [2018-07-23 19:16:58,000 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:16:58,001 INFO L450 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-23 19:16:58,001 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-23 19:16:58,001 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2018-07-23 19:16:58,002 INFO L87 Difference]: Start difference. First operand 3170 states and 4462 transitions. Second operand 13 states. [2018-07-23 19:17:03,373 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-23 19:17:38,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:17:38,579 INFO L93 Difference]: Finished difference Result 6484 states and 9134 transitions. [2018-07-23 19:17:38,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-23 19:17:38,579 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 242 [2018-07-23 19:17:38,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:17:38,604 INFO L225 Difference]: With dead ends: 6484 [2018-07-23 19:17:38,604 INFO L226 Difference]: Without dead ends: 3172 [2018-07-23 19:17:38,626 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 250 GetRequests, 222 SyntacticMatches, 8 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2018-07-23 19:17:38,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3172 states. [2018-07-23 19:17:38,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3172 to 3170. [2018-07-23 19:17:38,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3170 states. [2018-07-23 19:17:38,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3170 states to 3170 states and 4460 transitions. [2018-07-23 19:17:38,718 INFO L78 Accepts]: Start accepts. Automaton has 3170 states and 4460 transitions. Word has length 242 [2018-07-23 19:17:38,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:17:38,719 INFO L471 AbstractCegarLoop]: Abstraction has 3170 states and 4460 transitions. [2018-07-23 19:17:38,719 INFO L472 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-23 19:17:38,719 INFO L276 IsEmpty]: Start isEmpty. Operand 3170 states and 4460 transitions. [2018-07-23 19:17:38,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2018-07-23 19:17:38,736 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:17:38,737 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 19:17:38,737 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:17:38,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1242464401, now seen corresponding path program 1 times [2018-07-23 19:17:38,738 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:17:38,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:17:38,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:17:38,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:17:38,739 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:17:38,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:17:39,356 WARN L169 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 12 [2018-07-23 19:17:40,153 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 109 proven. 158 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-23 19:17:40,153 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 19:17:40,153 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 19:17:40,154 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 280 with the following transitions: [2018-07-23 19:17:40,154 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [9], [15], [19], [21], [26], [33], [41], [49], [57], [65], [73], [81], [85], [87], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [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], [498], [506], [514], [519], [522], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [602], [603], [607], [611], [615], [619], [623], [626], [816], [817], [818], [819], [821], [822] [2018-07-23 19:17:40,159 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 19:17:40,159 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 19:17:41,771 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-23 19:17:56,030 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 19:17:56,030 INFO L272 AbstractInterpreter]: Visited 106 different actions 206 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-07-23 19:17:56,035 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 19:18:04,450 INFO L232 lantSequenceWeakener]: Weakened 277 states. On average, predicates are now at 72.87% of their original sizes. [2018-07-23 19:18:04,450 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 19:18:05,438 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 19:18:05,438 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 19:18:05,438 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [16] total 25 [2018-07-23 19:18:05,438 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 19:18:05,439 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 19:18:05,439 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 19:18:05,439 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-07-23 19:18:05,440 INFO L87 Difference]: Start difference. First operand 3170 states and 4460 transitions. Second operand 11 states. [2018-07-23 19:18:43,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 19:18:43,257 INFO L93 Difference]: Finished difference Result 6339 states and 8982 transitions. [2018-07-23 19:18:43,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-23 19:18:43,257 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 279 [2018-07-23 19:18:43,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 19:18:43,276 INFO L225 Difference]: With dead ends: 6339 [2018-07-23 19:18:43,277 INFO L226 Difference]: Without dead ends: 3319 [2018-07-23 19:18:43,295 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 286 GetRequests, 261 SyntacticMatches, 8 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2018-07-23 19:18:43,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3319 states. [2018-07-23 19:18:43,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3319 to 3316. [2018-07-23 19:18:43,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3316 states. [2018-07-23 19:18:43,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3316 states to 3316 states and 4621 transitions. [2018-07-23 19:18:43,390 INFO L78 Accepts]: Start accepts. Automaton has 3316 states and 4621 transitions. Word has length 279 [2018-07-23 19:18:43,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 19:18:43,390 INFO L471 AbstractCegarLoop]: Abstraction has 3316 states and 4621 transitions. [2018-07-23 19:18:43,391 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 19:18:43,391 INFO L276 IsEmpty]: Start isEmpty. Operand 3316 states and 4621 transitions. [2018-07-23 19:18:43,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-07-23 19:18:43,404 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 19:18:43,405 INFO L353 BasicCegarLoop]: trace histogram [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, 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, 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] [2018-07-23 19:18:43,405 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 19:18:43,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1833431552, now seen corresponding path program 1 times [2018-07-23 19:18:43,405 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 19:18:43,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:18:43,406 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:18:43,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 19:18:43,407 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 19:18:43,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:18:43,877 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 5 proven. 28 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-07-23 19:18:43,877 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 19:18:43,877 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 19:18:43,877 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 279 with the following transitions: [2018-07-23 19:18:43,878 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [9], [15], [19], [21], [26], [33], [41], [49], [57], [65], [73], [81], [85], [87], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [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], [498], [506], [514], [519], [523], [527], [531], [535], [539], [543], [547], [551], [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], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [702], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [806], [816], [817], [818], [819], [821], [822] [2018-07-23 19:18:43,883 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 19:18:43,884 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 19:18:47,304 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-23 19:19:40,507 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-07-23 19:19:40,508 INFO L272 AbstractInterpreter]: Visited 151 different actions 737 times. Merged at 7 different actions 28 times. Never widened. Found 5 fixpoints after 2 different actions. Largest state had 24 variables. [2018-07-23 19:19:40,514 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-07-23 19:19:40,515 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 19:19:40,515 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-23 19:19:40,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 19:19:40,526 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-23 19:19:40,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 19:19:40,660 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 19:19:41,251 WARN L169 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 20 Received shutdown request... [2018-07-23 19:19:43,829 WARN L177 SmtUtils]: Removed 2 from assertion stack [2018-07-23 19:19:43,829 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-07-23 19:19:44,030 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-23 19:19:44,031 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-23 19:19:44,035 WARN L202 ceAbstractionStarter]: Timeout [2018-07-23 19:19:44,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 07:19:44 BoogieIcfgContainer [2018-07-23 19:19:44,036 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 19:19:44,037 INFO L168 Benchmark]: Toolchain (without parser) took 236093.49 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-07-23 19:19:44,038 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 19:19:44,038 INFO L168 Benchmark]: CACSL2BoogieTranslator took 649.40 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-07-23 19:19:44,039 INFO L168 Benchmark]: Boogie Procedure Inliner took 112.07 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-23 19:19:44,040 INFO L168 Benchmark]: Boogie Preprocessor took 77.37 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-23 19:19:44,043 INFO L168 Benchmark]: RCFGBuilder took 4420.65 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 774.4 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -740.9 MB). Peak memory consumption was 53.9 MB. Max. memory is 7.1 GB. [2018-07-23 19:19:44,044 INFO L168 Benchmark]: TraceAbstraction took 230826.22 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.1 GB in the end (delta: -978.8 MB). Peak memory consumption was 933.3 MB. Max. memory is 7.1 GB. [2018-07-23 19:19:44,055 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 649.40 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 112.07 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 77.37 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4420.65 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 774.4 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -740.9 MB). Peak memory consumption was 53.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 230826.22 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.1 GB in the end (delta: -978.8 MB). Peak memory consumption was 933.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 43). Cancelled while BasicCegarLoop was analyzing trace of length 279 with TraceHistMax 3, while TraceCheckSpWp was constructing forward predicates, while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 42. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 230.7s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 106.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1000 SDtfs, 3695 SDslu, 1207 SDs, 0 SdLazy, 5572 SolverSat, 972 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 60.4s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 773 GetRequests, 695 SyntacticMatches, 19 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3316occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 94.6s AbstIntTime, 4 AbstIntIterations, 3 AbstIntStrong, 0.9950093823611609 AbsIntWeakeningRatio, 0.11570247933884298 AbsIntAvgWeakeningVarsNumRemoved, 265.74517906336087 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 7 MinimizatonAttempts, 63 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 1105 NumberOfCodeBlocks, 1105 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1098 ConstructedInterpolants, 0 QuantifiedInterpolants, 1710143 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 284/534 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/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem10_label58_false-unreach-call.c_svcomp-Reach-64bit-Taipan_Default-old.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-23_19-19-44-071.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem10_label58_false-unreach-call.c_svcomp-Reach-64bit-Taipan_Default-old.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_19-19-44-071.csv Completed graceful shutdown