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/Problem12_label59_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-21 16:50:07,338 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-21 16:50:07,340 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-21 16:50:07,353 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-21 16:50:07,353 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-21 16:50:07,354 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-21 16:50:07,355 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-21 16:50:07,363 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-21 16:50:07,367 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-21 16:50:07,368 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-21 16:50:07,369 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-21 16:50:07,369 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-21 16:50:07,370 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-21 16:50:07,378 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-21 16:50:07,379 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-21 16:50:07,379 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-21 16:50:07,380 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-21 16:50:07,381 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-21 16:50:07,385 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-21 16:50:07,387 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-21 16:50:07,390 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-21 16:50:07,391 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-21 16:50:07,395 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-21 16:50:07,396 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-21 16:50:07,396 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-21 16:50:07,397 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-21 16:50:07,398 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-21 16:50:07,398 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-21 16:50:07,401 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-21 16:50:07,402 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-21 16:50:07,402 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-21 16:50:07,403 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-21 16:50:07,403 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-21 16:50:07,403 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-21 16:50:07,406 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-21 16:50:07,407 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-21 16:50:07,407 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 16:50:07,435 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-21 16:50:07,436 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-21 16:50:07,436 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-21 16:50:07,437 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-21 16:50:07,437 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-21 16:50:07,437 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-21 16:50:07,437 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-21 16:50:07,437 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-21 16:50:07,438 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-21 16:50:07,441 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-21 16:50:07,441 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-07-21 16:50:07,441 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-21 16:50:07,442 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-21 16:50:07,442 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-21 16:50:07,442 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-21 16:50:07,442 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-21 16:50:07,443 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-21 16:50:07,443 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-21 16:50:07,443 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-21 16:50:07,443 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-21 16:50:07,443 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-21 16:50:07,444 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-21 16:50:07,445 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-21 16:50:07,445 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-21 16:50:07,445 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-21 16:50:07,445 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-21 16:50:07,446 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-21 16:50:07,446 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-21 16:50:07,446 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-21 16:50:07,446 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-21 16:50:07,446 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-21 16:50:07,446 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-21 16:50:07,447 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-21 16:50:07,447 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-21 16:50:07,447 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-21 16:50:07,500 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-21 16:50:07,517 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-21 16:50:07,522 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-21 16:50:07,525 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-21 16:50:07,525 INFO L276 PluginConnector]: CDTParser initialized [2018-07-21 16:50:07,526 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label59_true-unreach-call.c [2018-07-21 16:50:07,922 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/f0d4c5d03/ec20efcb18864f92bf8e320e3a4e68b8/FLAGfccc6995a [2018-07-21 16:50:08,486 INFO L276 CDTParser]: Found 1 translation units. [2018-07-21 16:50:08,487 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label59_true-unreach-call.c [2018-07-21 16:50:08,548 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/f0d4c5d03/ec20efcb18864f92bf8e320e3a4e68b8/FLAGfccc6995a [2018-07-21 16:50:08,568 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/f0d4c5d03/ec20efcb18864f92bf8e320e3a4e68b8 [2018-07-21 16:50:08,581 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-21 16:50:08,588 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-21 16:50:08,589 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-21 16:50:08,590 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-21 16:50:08,600 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-21 16:50:08,602 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:50:08" (1/1) ... [2018-07-21 16:50:08,605 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1da47078 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:50:08, skipping insertion in model container [2018-07-21 16:50:08,605 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:50:08" (1/1) ... [2018-07-21 16:50:08,975 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-21 16:50:10,173 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 16:50:10,192 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-21 16:50:11,046 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 16:50:11,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:50:11 WrapperNode [2018-07-21 16:50:11,358 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-21 16:50:11,359 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-21 16:50:11,359 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-21 16:50:11,359 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-21 16:50:11,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:50:11" (1/1) ... [2018-07-21 16:50:11,471 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:50:11" (1/1) ... [2018-07-21 16:50:11,657 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-21 16:50:11,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-21 16:50:11,657 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-21 16:50:11,657 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-21 16:50:11,668 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:50:11" (1/1) ... [2018-07-21 16:50:11,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:50:11" (1/1) ... [2018-07-21 16:50:11,721 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:50:11" (1/1) ... [2018-07-21 16:50:11,722 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:50:11" (1/1) ... [2018-07-21 16:50:12,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:50:11" (1/1) ... [2018-07-21 16:50:12,501 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:50:11" (1/1) ... [2018-07-21 16:50:12,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:50:11" (1/1) ... [2018-07-21 16:50:12,614 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-21 16:50:12,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-21 16:50:12,615 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-21 16:50:12,615 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-21 16:50:12,616 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:50:11" (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 16:50:12,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-21 16:50:12,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-21 16:50:12,684 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 16:50:12,684 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 16:50:12,684 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 16:50:12,684 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 16:50:12,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-21 16:50:12,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-21 16:50:12,685 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-21 16:50:12,685 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-21 16:50:12,685 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 16:50:12,685 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 16:50:12,685 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 16:50:12,685 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 16:50:25,476 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-21 16:50:25,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:50:25 BoogieIcfgContainer [2018-07-21 16:50:25,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-21 16:50:25,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-21 16:50:25,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-21 16:50:25,481 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-21 16:50:25,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:50:08" (1/3) ... [2018-07-21 16:50:25,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cc666ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:50:25, skipping insertion in model container [2018-07-21 16:50:25,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:50:11" (2/3) ... [2018-07-21 16:50:25,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cc666ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:50:25, skipping insertion in model container [2018-07-21 16:50:25,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:50:25" (3/3) ... [2018-07-21 16:50:25,485 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label59_true-unreach-call.c [2018-07-21 16:50:25,497 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-21 16:50:25,506 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-21 16:50:25,573 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-21 16:50:25,573 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-21 16:50:25,574 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-21 16:50:25,576 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-21 16:50:25,576 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-21 16:50:25,576 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-21 16:50:25,576 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-21 16:50:25,576 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-21 16:50:25,577 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-21 16:50:25,622 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-07-21 16:50:25,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-07-21 16:50:25,631 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 16:50:25,633 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] [2018-07-21 16:50:25,633 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 16:50:25,637 INFO L82 PathProgramCache]: Analyzing trace with hash 380091459, now seen corresponding path program 1 times [2018-07-21 16:50:25,640 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 16:50:25,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 16:50:25,684 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 16:50:25,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 16:50:25,685 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 16:50:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 16:50:26,116 WARN L169 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-21 16:50:26,223 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 16:50:26,226 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 16:50:26,227 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-21 16:50:26,227 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 16:50:26,231 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-21 16:50:26,246 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-21 16:50:26,247 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-21 16:50:26,249 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-07-21 16:50:33,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 16:50:33,713 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-07-21 16:50:33,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-21 16:50:33,715 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2018-07-21 16:50:33,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 16:50:33,750 INFO L225 Difference]: With dead ends: 2446 [2018-07-21 16:50:33,750 INFO L226 Difference]: Without dead ends: 1604 [2018-07-21 16:50:33,763 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 16:50:33,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-07-21 16:50:33,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-07-21 16:50:33,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-07-21 16:50:33,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 3014 transitions. [2018-07-21 16:50:33,955 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 3014 transitions. Word has length 51 [2018-07-21 16:50:33,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 16:50:33,956 INFO L471 AbstractCegarLoop]: Abstraction has 1604 states and 3014 transitions. [2018-07-21 16:50:33,956 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-21 16:50:33,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 3014 transitions. [2018-07-21 16:50:33,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-07-21 16:50:33,964 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 16:50:33,964 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:50:33,964 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 16:50:33,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1536634388, now seen corresponding path program 1 times [2018-07-21 16:50:33,965 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 16:50:33,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 16:50:33,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 16:50:33,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 16:50:33,966 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 16:50:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 16:50:34,274 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 16:50:34,274 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 16:50:34,274 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-21 16:50:34,274 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 16:50:34,276 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-21 16:50:34,278 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-21 16:50:34,278 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-21 16:50:34,278 INFO L87 Difference]: Start difference. First operand 1604 states and 3014 transitions. Second operand 6 states. [2018-07-21 16:50:46,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 16:50:46,778 INFO L93 Difference]: Finished difference Result 6328 states and 12094 transitions. [2018-07-21 16:50:46,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-21 16:50:46,779 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2018-07-21 16:50:46,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 16:50:46,818 INFO L225 Difference]: With dead ends: 6328 [2018-07-21 16:50:46,818 INFO L226 Difference]: Without dead ends: 4730 [2018-07-21 16:50:46,828 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-21 16:50:46,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4730 states. [2018-07-21 16:50:47,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4730 to 4698. [2018-07-21 16:50:47,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4698 states. [2018-07-21 16:50:47,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4698 states to 4698 states and 7655 transitions. [2018-07-21 16:50:47,044 INFO L78 Accepts]: Start accepts. Automaton has 4698 states and 7655 transitions. Word has length 121 [2018-07-21 16:50:47,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 16:50:47,045 INFO L471 AbstractCegarLoop]: Abstraction has 4698 states and 7655 transitions. [2018-07-21 16:50:47,045 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-21 16:50:47,045 INFO L276 IsEmpty]: Start isEmpty. Operand 4698 states and 7655 transitions. [2018-07-21 16:50:47,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-21 16:50:47,059 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 16:50:47,059 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:50:47,059 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 16:50:47,060 INFO L82 PathProgramCache]: Analyzing trace with hash -2027874515, now seen corresponding path program 1 times [2018-07-21 16:50:47,060 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 16:50:47,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 16:50:47,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 16:50:47,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 16:50:47,063 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 16:50:47,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 16:50:47,300 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 16:50:47,300 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 16:50:47,300 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-21 16:50:47,300 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 16:50:47,301 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-21 16:50:47,301 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-21 16:50:47,302 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-21 16:50:47,302 INFO L87 Difference]: Start difference. First operand 4698 states and 7655 transitions. Second operand 6 states. [2018-07-21 16:50:54,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 16:50:54,614 INFO L93 Difference]: Finished difference Result 12588 states and 20907 transitions. [2018-07-21 16:50:54,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-21 16:50:54,615 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2018-07-21 16:50:54,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 16:50:54,660 INFO L225 Difference]: With dead ends: 12588 [2018-07-21 16:50:54,661 INFO L226 Difference]: Without dead ends: 7896 [2018-07-21 16:50:54,680 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 16:50:54,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7896 states. [2018-07-21 16:50:54,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7896 to 7848. [2018-07-21 16:50:54,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7848 states. [2018-07-21 16:50:54,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7848 states to 7848 states and 11615 transitions. [2018-07-21 16:50:54,934 INFO L78 Accepts]: Start accepts. Automaton has 7848 states and 11615 transitions. Word has length 122 [2018-07-21 16:50:54,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 16:50:54,934 INFO L471 AbstractCegarLoop]: Abstraction has 7848 states and 11615 transitions. [2018-07-21 16:50:54,934 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-21 16:50:54,934 INFO L276 IsEmpty]: Start isEmpty. Operand 7848 states and 11615 transitions. [2018-07-21 16:50:54,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-07-21 16:50:54,937 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 16:50:54,937 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:50:54,937 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 16:50:54,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1016801152, now seen corresponding path program 1 times [2018-07-21 16:50:54,938 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-21 16:50:54,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 16:50:54,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 16:50:54,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 16:50:54,939 INFO L282 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-21 16:50:54,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 16:50:55,224 WARN L169 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-21 16:50:55,580 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 28 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 16:50:55,580 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 16:50:55,580 INFO L189 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-21 16:50:55,581 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 128 with the following transitions: [2018-07-21 16:50:55,583 INFO L201 CegarAbsIntRunner]: [0], [1], [987], [991], [997], [1001], [1003], [1892], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2179], [2187], [2195], [2199], [2201], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2364], [2372], [2380], [2385], [2389], [2393], [2397], [2401], [2405], [2408], [3264], [3267], [3268], [3269], [3271], [3272] [2018-07-21 16:50:55,651 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-21 16:50:55,651 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-21 16:51:06,438 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-21 16:51:06,439 INFO L272 AbstractInterpreter]: Visited 83 different actions 162 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-07-21 16:51:06,458 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-21 16:51:09,043 INFO L232 lantSequenceWeakener]: Weakened 125 states. On average, predicates are now at 76.17% of their original sizes. [2018-07-21 16:51:09,044 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-21 16:51:11,330 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-21 16:51:11,331 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-21 16:51:11,360 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [7] total 21 [2018-07-21 16:51:11,361 INFO L254 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-21 16:51:11,361 INFO L450 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-21 16:51:11,362 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-21 16:51:11,362 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2018-07-21 16:51:11,362 INFO L87 Difference]: Start difference. First operand 7848 states and 11615 transitions. Second operand 16 states. [2018-07-21 16:51:20,392 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown