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/Problem13_label34_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-21 17:11:26,088 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-21 17:11:26,090 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-21 17:11:26,101 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-21 17:11:26,101 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-21 17:11:26,103 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-21 17:11:26,104 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-21 17:11:26,112 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-21 17:11:26,113 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-21 17:11:26,116 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-21 17:11:26,116 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-21 17:11:26,117 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-21 17:11:26,118 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-21 17:11:26,118 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-21 17:11:26,121 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-21 17:11:26,122 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-21 17:11:26,123 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-21 17:11:26,132 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-21 17:11:26,134 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-21 17:11:26,135 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-21 17:11:26,136 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-21 17:11:26,141 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-21 17:11:26,143 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-21 17:11:26,143 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-21 17:11:26,143 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-21 17:11:26,145 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-21 17:11:26,146 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-21 17:11:26,146 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-21 17:11:26,147 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-21 17:11:26,152 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-21 17:11:26,152 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-21 17:11:26,153 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-21 17:11:26,153 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-21 17:11:26,153 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-21 17:11:26,154 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-21 17:11:26,155 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-21 17:11:26,157 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 17:11:26,184 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-21 17:11:26,184 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-21 17:11:26,185 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-21 17:11:26,185 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-21 17:11:26,186 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-21 17:11:26,186 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-21 17:11:26,186 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-21 17:11:26,186 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-21 17:11:26,186 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-21 17:11:26,187 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-21 17:11:26,187 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-07-21 17:11:26,187 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-21 17:11:26,187 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-21 17:11:26,190 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-21 17:11:26,191 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-21 17:11:26,191 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-21 17:11:26,191 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-21 17:11:26,191 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-21 17:11:26,191 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-21 17:11:26,191 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-21 17:11:26,192 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-21 17:11:26,192 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-21 17:11:26,192 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-21 17:11:26,192 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-21 17:11:26,192 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-21 17:11:26,193 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-21 17:11:26,193 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-21 17:11:26,193 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-21 17:11:26,193 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-21 17:11:26,193 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-21 17:11:26,193 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-21 17:11:26,195 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-21 17:11:26,195 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-21 17:11:26,196 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-21 17:11:26,196 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-21 17:11:26,244 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-21 17:11:26,260 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-21 17:11:26,267 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-21 17:11:26,268 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-21 17:11:26,269 INFO L276 PluginConnector]: CDTParser initialized [2018-07-21 17:11:26,270 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label34_true-unreach-call.c [2018-07-21 17:11:26,667 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/0f32bdc3b/ffee1d9304ef48079d462af452be8955/FLAGdea1d2124 [2018-07-21 17:11:27,196 INFO L276 CDTParser]: Found 1 translation units. [2018-07-21 17:11:27,198 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label34_true-unreach-call.c [2018-07-21 17:11:27,253 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/0f32bdc3b/ffee1d9304ef48079d462af452be8955/FLAGdea1d2124 [2018-07-21 17:11:27,273 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/0f32bdc3b/ffee1d9304ef48079d462af452be8955 [2018-07-21 17:11:27,285 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-21 17:11:27,292 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-21 17:11:27,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-21 17:11:27,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-21 17:11:27,303 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-21 17:11:27,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:11:27" (1/1) ... [2018-07-21 17:11:27,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58713257 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:11:27, skipping insertion in model container [2018-07-21 17:11:27,308 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:11:27" (1/1) ... [2018-07-21 17:11:27,733 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-21 17:11:29,149 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 17:11:29,176 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-21 17:11:30,149 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 17:11:30,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:11:30 WrapperNode [2018-07-21 17:11:30,419 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-21 17:11:30,421 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-21 17:11:30,421 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-21 17:11:30,421 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-21 17:11:30,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:11:30" (1/1) ... [2018-07-21 17:11:30,557 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:11:30" (1/1) ... [2018-07-21 17:11:30,753 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-21 17:11:30,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-21 17:11:30,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-21 17:11:30,754 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-21 17:11:30,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:11:30" (1/1) ... [2018-07-21 17:11:30,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:11:30" (1/1) ... [2018-07-21 17:11:31,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:11:30" (1/1) ... [2018-07-21 17:11:31,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:11:30" (1/1) ... [2018-07-21 17:11:32,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:11:30" (1/1) ... [2018-07-21 17:11:32,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:11:30" (1/1) ... [2018-07-21 17:11:32,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:11:30" (1/1) ... [2018-07-21 17:11:32,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-21 17:11:32,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-21 17:11:32,170 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-21 17:11:32,170 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-21 17:11:32,171 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:11:30" (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 17:11:32,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-21 17:11:32,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-21 17:11:32,238 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-07-21 17:11:32,238 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-07-21 17:11:32,238 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-07-21 17:11:32,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-07-21 17:11:32,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-21 17:11:32,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-21 17:11:32,239 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-21 17:11:32,239 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-21 17:11:32,239 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-21 17:11:32,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-07-21 17:11:32,240 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-21 17:11:32,240 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-07-21 17:11:45,251 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-21 17:11:45,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:11:45 BoogieIcfgContainer [2018-07-21 17:11:45,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-21 17:11:45,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-21 17:11:45,253 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-21 17:11:45,258 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-21 17:11:45,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:11:27" (1/3) ... [2018-07-21 17:11:45,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22c67279 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:11:45, skipping insertion in model container [2018-07-21 17:11:45,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:11:30" (2/3) ... [2018-07-21 17:11:45,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22c67279 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:11:45, skipping insertion in model container [2018-07-21 17:11:45,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:11:45" (3/3) ... [2018-07-21 17:11:45,262 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label34_true-unreach-call.c [2018-07-21 17:11:45,271 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-21 17:11:45,284 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-21 17:11:45,361 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-21 17:11:45,362 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-21 17:11:45,362 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-21 17:11:45,362 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-21 17:11:45,362 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-21 17:11:45,362 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-21 17:11:45,362 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-21 17:11:45,362 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-21 17:11:45,363 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-21 17:11:45,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-07-21 17:11:45,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-07-21 17:11:45,422 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 17:11:45,424 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, 1, 1, 1, 1, 1, 1] [2018-07-21 17:11:45,424 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 17:11:45,427 INFO L82 PathProgramCache]: Analyzing trace with hash -418041173, now seen corresponding path program 1 times [2018-07-21 17:11:45,429 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 17:11:45,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:11:45,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 17:11:45,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:11:45,475 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 17:11:45,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 17:11:45,908 WARN L169 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-21 17:11:46,022 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 17:11:46,025 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 17:11:46,025 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-21 17:11:46,025 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 17:11:46,029 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-21 17:11:46,045 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-21 17:11:46,046 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 17:11:46,049 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-07-21 17:11:54,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 17:11:54,862 INFO L93 Difference]: Finished difference Result 3093 states and 5715 transitions. [2018-07-21 17:11:54,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-21 17:11:54,864 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2018-07-21 17:11:54,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 17:11:54,899 INFO L225 Difference]: With dead ends: 3093 [2018-07-21 17:11:54,899 INFO L226 Difference]: Without dead ends: 1971 [2018-07-21 17:11:54,910 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 17:11:54,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1971 states. [2018-07-21 17:11:55,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1971 to 1957. [2018-07-21 17:11:55,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1957 states. [2018-07-21 17:11:55,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 3535 transitions. [2018-07-21 17:11:55,094 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 3535 transitions. Word has length 63 [2018-07-21 17:11:55,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 17:11:55,096 INFO L471 AbstractCegarLoop]: Abstraction has 1957 states and 3535 transitions. [2018-07-21 17:11:55,096 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-21 17:11:55,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 3535 transitions. [2018-07-21 17:11:55,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-07-21 17:11:55,111 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 17:11:55,112 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, 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 17:11:55,112 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 17:11:55,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1668232460, now seen corresponding path program 1 times [2018-07-21 17:11:55,112 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 17:11:55,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:11:55,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 17:11:55,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:11:55,114 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 17:11:55,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 17:11:55,790 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 17:11:55,791 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 17:11:55,792 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-21 17:11:55,792 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 17:11:55,793 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-21 17:11:55,794 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-21 17:11:55,794 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-21 17:11:55,794 INFO L87 Difference]: Start difference. First operand 1957 states and 3535 transitions. Second operand 6 states. [2018-07-21 17:12:09,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 17:12:09,965 INFO L93 Difference]: Finished difference Result 5630 states and 10205 transitions. [2018-07-21 17:12:09,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-21 17:12:09,999 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2018-07-21 17:12:10,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 17:12:10,029 INFO L225 Difference]: With dead ends: 5630 [2018-07-21 17:12:10,030 INFO L226 Difference]: Without dead ends: 3679 [2018-07-21 17:12:10,038 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-21 17:12:10,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3679 states. [2018-07-21 17:12:10,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3679 to 3636. [2018-07-21 17:12:10,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3636 states. [2018-07-21 17:12:10,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3636 states to 3636 states and 5828 transitions. [2018-07-21 17:12:10,180 INFO L78 Accepts]: Start accepts. Automaton has 3636 states and 5828 transitions. Word has length 146 [2018-07-21 17:12:10,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 17:12:10,181 INFO L471 AbstractCegarLoop]: Abstraction has 3636 states and 5828 transitions. [2018-07-21 17:12:10,182 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-21 17:12:10,183 INFO L276 IsEmpty]: Start isEmpty. Operand 3636 states and 5828 transitions. [2018-07-21 17:12:10,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-07-21 17:12:10,194 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 17:12:10,195 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, 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 17:12:10,195 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 17:12:10,195 INFO L82 PathProgramCache]: Analyzing trace with hash -710583562, now seen corresponding path program 1 times [2018-07-21 17:12:10,195 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 17:12:10,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:12:10,196 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 17:12:10,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:12:10,197 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 17:12:10,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 17:12:10,426 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 17:12:10,426 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 17:12:10,426 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-21 17:12:10,426 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 17:12:10,427 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-21 17:12:10,427 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-21 17:12:10,427 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-21 17:12:10,428 INFO L87 Difference]: Start difference. First operand 3636 states and 5828 transitions. Second operand 6 states. [2018-07-21 17:12:21,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 17:12:21,780 INFO L93 Difference]: Finished difference Result 9056 states and 14658 transitions. [2018-07-21 17:12:21,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-21 17:12:21,780 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 153 [2018-07-21 17:12:21,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 17:12:21,806 INFO L225 Difference]: With dead ends: 9056 [2018-07-21 17:12:21,807 INFO L226 Difference]: Without dead ends: 5426 [2018-07-21 17:12:21,819 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-21 17:12:21,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5426 states. [2018-07-21 17:12:21,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5426 to 5379. [2018-07-21 17:12:21,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5379 states. [2018-07-21 17:12:22,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5379 states to 5379 states and 8038 transitions. [2018-07-21 17:12:22,003 INFO L78 Accepts]: Start accepts. Automaton has 5379 states and 8038 transitions. Word has length 153 [2018-07-21 17:12:22,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 17:12:22,003 INFO L471 AbstractCegarLoop]: Abstraction has 5379 states and 8038 transitions. [2018-07-21 17:12:22,004 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-21 17:12:22,005 INFO L276 IsEmpty]: Start isEmpty. Operand 5379 states and 8038 transitions. [2018-07-21 17:12:22,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-07-21 17:12:22,009 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 17:12:22,010 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, 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] [2018-07-21 17:12:22,011 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 17:12:22,011 INFO L82 PathProgramCache]: Analyzing trace with hash 402062854, now seen corresponding path program 1 times [2018-07-21 17:12:22,011 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 17:12:22,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:12:22,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 17:12:22,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:12:22,012 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 17:12:22,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 17:12:22,318 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 17:12:22,319 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 17:12:22,319 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-21 17:12:22,319 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 17:12:22,319 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-21 17:12:22,320 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-21 17:12:22,320 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-21 17:12:22,320 INFO L87 Difference]: Start difference. First operand 5379 states and 8038 transitions. Second operand 6 states. [2018-07-21 17:12:34,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 17:12:34,805 INFO L93 Difference]: Finished difference Result 13392 states and 20436 transitions. [2018-07-21 17:12:34,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-21 17:12:34,833 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 161 [2018-07-21 17:12:34,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 17:12:34,863 INFO L225 Difference]: With dead ends: 13392 [2018-07-21 17:12:34,863 INFO L226 Difference]: Without dead ends: 8019 [2018-07-21 17:12:34,881 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-21 17:12:34,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8019 states. [2018-07-21 17:12:35,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8019 to 7964. [2018-07-21 17:12:35,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7964 states. [2018-07-21 17:12:35,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7964 states to 7964 states and 11400 transitions. [2018-07-21 17:12:35,130 INFO L78 Accepts]: Start accepts. Automaton has 7964 states and 11400 transitions. Word has length 161 [2018-07-21 17:12:35,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 17:12:35,130 INFO L471 AbstractCegarLoop]: Abstraction has 7964 states and 11400 transitions. [2018-07-21 17:12:35,130 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-21 17:12:35,131 INFO L276 IsEmpty]: Start isEmpty. Operand 7964 states and 11400 transitions. [2018-07-21 17:12:35,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-07-21 17:12:35,135 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 17:12:35,135 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, 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] [2018-07-21 17:12:35,136 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 17:12:35,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1056553148, now seen corresponding path program 1 times [2018-07-21 17:12:35,136 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 17:12:35,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:12:35,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 17:12:35,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:12:35,138 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 17:12:35,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 17:12:35,407 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 17:12:35,407 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 17:12:35,407 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-21 17:12:35,408 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 17:12:35,408 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-21 17:12:35,408 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-21 17:12:35,408 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-21 17:12:35,410 INFO L87 Difference]: Start difference. First operand 7964 states and 11400 transitions. Second operand 5 states. [2018-07-21 17:12:49,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 17:12:49,500 INFO L93 Difference]: Finished difference Result 23414 states and 34594 transitions. [2018-07-21 17:12:49,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-21 17:12:49,505 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2018-07-21 17:12:49,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 17:12:49,579 INFO L225 Difference]: With dead ends: 23414 [2018-07-21 17:12:49,579 INFO L226 Difference]: Without dead ends: 15456 [2018-07-21 17:12:49,602 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-21 17:12:49,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15456 states. [2018-07-21 17:12:50,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15456 to 15077. [2018-07-21 17:12:50,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15077 states. [2018-07-21 17:12:50,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15077 states to 15077 states and 20669 transitions. [2018-07-21 17:12:50,081 INFO L78 Accepts]: Start accepts. Automaton has 15077 states and 20669 transitions. Word has length 162 [2018-07-21 17:12:50,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 17:12:50,082 INFO L471 AbstractCegarLoop]: Abstraction has 15077 states and 20669 transitions. [2018-07-21 17:12:50,082 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-21 17:12:50,082 INFO L276 IsEmpty]: Start isEmpty. Operand 15077 states and 20669 transitions. [2018-07-21 17:12:50,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-07-21 17:12:50,086 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 17:12:50,087 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, 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] [2018-07-21 17:12:50,087 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 17:12:50,087 INFO L82 PathProgramCache]: Analyzing trace with hash 677323646, now seen corresponding path program 1 times [2018-07-21 17:12:50,087 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 17:12:50,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:12:50,088 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 17:12:50,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:12:50,089 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 17:12:50,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 17:12:50,393 WARN L169 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-21 17:12:50,801 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 17:12:50,802 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 17:12:50,803 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-21 17:12:50,803 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 17:12:50,803 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-21 17:12:50,804 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-21 17:12:50,804 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-21 17:12:50,804 INFO L87 Difference]: Start difference. First operand 15077 states and 20669 transitions. Second operand 6 states. [2018-07-21 17:13:01,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 17:13:01,560 INFO L93 Difference]: Finished difference Result 39487 states and 58660 transitions. [2018-07-21 17:13:01,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-21 17:13:01,563 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 173 [2018-07-21 17:13:01,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 17:13:01,681 INFO L225 Difference]: With dead ends: 39487 [2018-07-21 17:13:01,681 INFO L226 Difference]: Without dead ends: 24416 [2018-07-21 17:13:01,731 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-21 17:13:01,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24416 states. [2018-07-21 17:13:02,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24416 to 24205. [2018-07-21 17:13:02,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24205 states. [2018-07-21 17:13:02,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24205 states to 24205 states and 32725 transitions. [2018-07-21 17:13:02,579 INFO L78 Accepts]: Start accepts. Automaton has 24205 states and 32725 transitions. Word has length 173 [2018-07-21 17:13:02,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 17:13:02,580 INFO L471 AbstractCegarLoop]: Abstraction has 24205 states and 32725 transitions. [2018-07-21 17:13:02,580 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-21 17:13:02,580 INFO L276 IsEmpty]: Start isEmpty. Operand 24205 states and 32725 transitions. [2018-07-21 17:13:02,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-07-21 17:13:02,588 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 17:13:02,588 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, 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] [2018-07-21 17:13:02,588 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 17:13:02,589 INFO L82 PathProgramCache]: Analyzing trace with hash 483106913, now seen corresponding path program 1 times [2018-07-21 17:13:02,589 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 17:13:02,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:13:02,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 17:13:02,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:13:02,591 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 17:13:02,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 17:13:02,922 WARN L169 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-21 17:13:03,341 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 17:13:03,342 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 17:13:03,342 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-21 17:13:03,342 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 17:13:03,343 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-21 17:13:03,343 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-21 17:13:03,343 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-21 17:13:03,344 INFO L87 Difference]: Start difference. First operand 24205 states and 32725 transitions. Second operand 6 states. [2018-07-21 17:13:12,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 17:13:12,842 INFO L93 Difference]: Finished difference Result 53260 states and 73627 transitions. [2018-07-21 17:13:12,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-21 17:13:12,843 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 221 [2018-07-21 17:13:12,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 17:13:12,938 INFO L225 Difference]: With dead ends: 53260 [2018-07-21 17:13:12,938 INFO L226 Difference]: Without dead ends: 29061 [2018-07-21 17:13:12,980 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-21 17:13:13,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29061 states. [2018-07-21 17:13:13,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29061 to 29003. [2018-07-21 17:13:13,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29003 states. [2018-07-21 17:13:13,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29003 states to 29003 states and 37310 transitions. [2018-07-21 17:13:13,539 INFO L78 Accepts]: Start accepts. Automaton has 29003 states and 37310 transitions. Word has length 221 [2018-07-21 17:13:13,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 17:13:13,540 INFO L471 AbstractCegarLoop]: Abstraction has 29003 states and 37310 transitions. [2018-07-21 17:13:13,540 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-21 17:13:13,540 INFO L276 IsEmpty]: Start isEmpty. Operand 29003 states and 37310 transitions. [2018-07-21 17:13:13,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-07-21 17:13:13,555 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 17:13:13,556 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, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:13:13,556 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 17:13:13,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1477180991, now seen corresponding path program 1 times [2018-07-21 17:13:13,556 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 17:13:13,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:13:13,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 17:13:13,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:13:13,557 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 17:13:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 17:13:13,824 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-07-21 17:13:13,824 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 17:13:13,824 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-21 17:13:13,825 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 17:13:13,825 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-21 17:13:13,826 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-21 17:13:13,826 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 17:13:13,826 INFO L87 Difference]: Start difference. First operand 29003 states and 37310 transitions. Second operand 3 states. [2018-07-21 17:13:18,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 17:13:18,895 INFO L93 Difference]: Finished difference Result 78511 states and 105520 transitions. [2018-07-21 17:13:18,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-21 17:13:18,895 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 274 [2018-07-21 17:13:18,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 17:13:19,081 INFO L225 Difference]: With dead ends: 78511 [2018-07-21 17:13:19,081 INFO L226 Difference]: Without dead ends: 49514 [2018-07-21 17:13:19,158 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 17:13:19,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49514 states. [2018-07-21 17:13:20,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49514 to 49510. [2018-07-21 17:13:20,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49510 states. [2018-07-21 17:13:20,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49510 states to 49510 states and 61830 transitions. [2018-07-21 17:13:20,126 INFO L78 Accepts]: Start accepts. Automaton has 49510 states and 61830 transitions. Word has length 274 [2018-07-21 17:13:20,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 17:13:20,127 INFO L471 AbstractCegarLoop]: Abstraction has 49510 states and 61830 transitions. [2018-07-21 17:13:20,128 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-21 17:13:20,128 INFO L276 IsEmpty]: Start isEmpty. Operand 49510 states and 61830 transitions. [2018-07-21 17:13:20,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2018-07-21 17:13:20,158 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 17:13:20,159 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:13:20,159 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 17:13:20,159 INFO L82 PathProgramCache]: Analyzing trace with hash 664690577, now seen corresponding path program 1 times [2018-07-21 17:13:20,159 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 17:13:20,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:13:20,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 17:13:20,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 17:13:20,160 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 17:13:20,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 17:13:20,511 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 209 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 17:13:20,512 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 17:13:20,512 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-21 17:13:20,513 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 284 with the following transitions: [2018-07-21 17:13:20,514 INFO L201 CegarAbsIntRunner]: [0], [1], [1453], [1457], [1463], [1467], [1469], [2652], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3027], [3035], [3043], [3051], [3055], [3057], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3124], [3132], [3140], [3145], [3149], [3153], [3157], [3161], [3172], [3176], [3180], [3184], [3188], [3192], [3203], [3207], [3211], [3215], [3219], [3223], [3227], [3231], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3281], [3282], [3286], [3290], [3294], [3298], [3302], [3306], [3310], [3314], [3318], [3329], [3333], [3337], [3341], [3345], [3349], [3353], [3357], [3368], [3379], [3382], [3385], [3389], [4262], [4265], [4266], [4267], [4269], [4270] [2018-07-21 17:13:20,603 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-21 17:13:20,603 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-21 17:13:33,883 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-21 17:13:33,885 INFO L272 AbstractInterpreter]: Visited 124 different actions 124 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-07-21 17:13:33,895 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-21 17:13:46,579 INFO L232 lantSequenceWeakener]: Weakened 273 states. On average, predicates are now at 71.5% of their original sizes. [2018-07-21 17:13:46,580 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-21 17:13:47,730 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-21 17:13:47,731 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-21 17:13:47,731 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-07-21 17:13:47,732 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 17:13:47,732 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-21 17:13:47,732 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-21 17:13:47,732 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-07-21 17:13:47,733 INFO L87 Difference]: Start difference. First operand 49510 states and 61830 transitions. Second operand 8 states. [2018-07-21 17:14:08,948 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-07-21 17:14:46,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-21 17:14:46,650 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-21 17:14:46,656 WARN L202 ceAbstractionStarter]: Timeout [2018-07-21 17:14:46,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 05:14:46 BoogieIcfgContainer [2018-07-21 17:14:46,658 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-21 17:14:46,659 INFO L168 Benchmark]: Toolchain (without parser) took 199373.59 ms. Allocated memory was 300.9 MB in the beginning and 2.4 GB in the end (delta: 2.1 GB). Free memory was 229.3 MB in the beginning and 1.5 GB in the end (delta: -1.3 GB). Peak memory consumption was 782.8 MB. Max. memory is 5.3 GB. [2018-07-21 17:14:46,660 INFO L168 Benchmark]: CDTParser took 0.59 ms. Allocated memory is still 300.9 MB. Free memory is still 266.4 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-07-21 17:14:46,661 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3125.99 ms. Allocated memory was 300.9 MB in the beginning and 390.6 MB in the end (delta: 89.7 MB). Free memory was 229.3 MB in the beginning and 211.0 MB in the end (delta: 18.3 MB). Peak memory consumption was 108.0 MB. Max. memory is 5.3 GB. [2018-07-21 17:14:46,661 INFO L168 Benchmark]: Boogie Procedure Inliner took 332.57 ms. Allocated memory is still 390.6 MB. Free memory was 211.0 MB in the beginning and 163.4 MB in the end (delta: 47.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 5.3 GB. [2018-07-21 17:14:46,666 INFO L168 Benchmark]: Boogie Preprocessor took 1416.20 ms. Allocated memory was 390.6 MB in the beginning and 605.6 MB in the end (delta: 215.0 MB). Free memory was 163.4 MB in the beginning and 450.5 MB in the end (delta: -287.1 MB). Peak memory consumption was 81.0 MB. Max. memory is 5.3 GB. [2018-07-21 17:14:46,667 INFO L168 Benchmark]: RCFGBuilder took 13082.31 ms. Allocated memory was 605.6 MB in the beginning and 938.0 MB in the end (delta: 332.4 MB). Free memory was 450.5 MB in the beginning and 623.0 MB in the end (delta: -172.6 MB). Peak memory consumption was 338.1 MB. Max. memory is 5.3 GB. [2018-07-21 17:14:46,667 INFO L168 Benchmark]: TraceAbstraction took 181405.13 ms. Allocated memory was 938.0 MB in the beginning and 2.4 GB in the end (delta: 1.4 GB). Free memory was 623.0 MB in the beginning and 1.5 GB in the end (delta: -904.3 MB). Peak memory consumption was 539.6 MB. Max. memory is 5.3 GB. [2018-07-21 17:14:46,676 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.59 ms. Allocated memory is still 300.9 MB. Free memory is still 266.4 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 3125.99 ms. Allocated memory was 300.9 MB in the beginning and 390.6 MB in the end (delta: 89.7 MB). Free memory was 229.3 MB in the beginning and 211.0 MB in the end (delta: 18.3 MB). Peak memory consumption was 108.0 MB. Max. memory is 5.3 GB. * Boogie Procedure Inliner took 332.57 ms. Allocated memory is still 390.6 MB. Free memory was 211.0 MB in the beginning and 163.4 MB in the end (delta: 47.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 1416.20 ms. Allocated memory was 390.6 MB in the beginning and 605.6 MB in the end (delta: 215.0 MB). Free memory was 163.4 MB in the beginning and 450.5 MB in the end (delta: -287.1 MB). Peak memory consumption was 81.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 13082.31 ms. Allocated memory was 605.6 MB in the beginning and 938.0 MB in the end (delta: 332.4 MB). Free memory was 450.5 MB in the beginning and 623.0 MB in the end (delta: -172.6 MB). Peak memory consumption was 338.1 MB. Max. memory is 5.3 GB. * TraceAbstraction took 181405.13 ms. Allocated memory was 938.0 MB in the beginning and 2.4 GB in the end (delta: 1.4 GB). Free memory was 623.0 MB in the beginning and 1.5 GB in the end (delta: -904.3 MB). Peak memory consumption was 539.6 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 180]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 180). Cancelled while BasicCegarLoop was constructing difference of abstraction (49510states) and interpolant automaton (currently 8 states, 8 states before enhancement), while ReachableStatesComputation was computing reachable states (2473 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 181.3s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 146.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5296 SDtfs, 27631 SDslu, 3810 SDs, 0 SdLazy, 39521 SolverSat, 11736 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 110.7s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 353 GetRequests, 295 SyntacticMatches, 7 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49510occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 13.3s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9967048554282594 AbsIntWeakeningRatio, 0.10638297872340426 AbsIntAvgWeakeningVarsNumRemoved, 23.97872340425532 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.5s AutomataMinimizationTime, 8 MinimizatonAttempts, 811 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 1636 NumberOfCodeBlocks, 1636 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1627 ConstructedInterpolants, 0 QuantifiedInterpolants, 1063813 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 747/749 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/Problem13_label34_true-unreach-call.c_svcomp-Reach-64bit-Taipan_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-21_17-14-46-698.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem13_label34_true-unreach-call.c_svcomp-Reach-64bit-Taipan_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-21_17-14-46-698.csv Completed graceful shutdown