java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label08_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ddc4263 [2018-08-07 13:19:49,482 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-08-07 13:19:49,484 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-08-07 13:19:49,496 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-08-07 13:19:49,497 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-08-07 13:19:49,498 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-08-07 13:19:49,499 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-08-07 13:19:49,501 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-08-07 13:19:49,503 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-08-07 13:19:49,504 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-08-07 13:19:49,505 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-08-07 13:19:49,505 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-08-07 13:19:49,506 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-08-07 13:19:49,508 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-08-07 13:19:49,509 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-08-07 13:19:49,510 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-08-07 13:19:49,511 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-08-07 13:19:49,512 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-08-07 13:19:49,515 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-08-07 13:19:49,516 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-08-07 13:19:49,517 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-08-07 13:19:49,519 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-08-07 13:19:49,521 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-08-07 13:19:49,522 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-08-07 13:19:49,522 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-08-07 13:19:49,523 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-08-07 13:19:49,524 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-08-07 13:19:49,525 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-08-07 13:19:49,526 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-08-07 13:19:49,527 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-08-07 13:19:49,527 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-08-07 13:19:49,528 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-08-07 13:19:49,528 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-08-07 13:19:49,529 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-08-07 13:19:49,530 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-08-07 13:19:49,530 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-08-07 13:19:49,531 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-08-07 13:19:49,548 INFO L110 SettingsManager]: Loading preferences was successful [2018-08-07 13:19:49,549 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-08-07 13:19:49,549 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-08-07 13:19:49,550 INFO L133 SettingsManager]: * User list type=DISABLED [2018-08-07 13:19:49,550 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-08-07 13:19:49,550 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-08-07 13:19:49,551 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-08-07 13:19:49,551 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-08-07 13:19:49,551 INFO L133 SettingsManager]: * Log string format=TERM [2018-08-07 13:19:49,551 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-08-07 13:19:49,551 INFO L133 SettingsManager]: * Interval Domain=false [2018-08-07 13:19:49,552 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-08-07 13:19:49,553 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-08-07 13:19:49,553 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-08-07 13:19:49,554 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-08-07 13:19:49,554 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-08-07 13:19:49,554 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-08-07 13:19:49,554 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-08-07 13:19:49,554 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-08-07 13:19:49,555 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-08-07 13:19:49,555 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-08-07 13:19:49,555 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-08-07 13:19:49,555 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-08-07 13:19:49,557 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-08-07 13:19:49,557 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-08-07 13:19:49,557 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-08-07 13:19:49,557 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-08-07 13:19:49,557 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-08-07 13:19:49,558 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-08-07 13:19:49,558 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-08-07 13:19:49,558 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-08-07 13:19:49,558 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-08-07 13:19:49,559 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-08-07 13:19:49,626 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-08-07 13:19:49,645 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-08-07 13:19:49,651 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-08-07 13:19:49,653 INFO L271 PluginConnector]: Initializing CDTParser... [2018-08-07 13:19:49,654 INFO L276 PluginConnector]: CDTParser initialized [2018-08-07 13:19:49,655 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label08_true-unreach-call.c [2018-08-07 13:19:50,025 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1b625fc9/af2e037538864412988119a114827548/FLAG96eb8e39a [2018-08-07 13:19:50,606 INFO L276 CDTParser]: Found 1 translation units. [2018-08-07 13:19:50,608 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label08_true-unreach-call.c [2018-08-07 13:19:50,658 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1b625fc9/af2e037538864412988119a114827548/FLAG96eb8e39a [2018-08-07 13:19:50,675 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1b625fc9/af2e037538864412988119a114827548 [2018-08-07 13:19:50,686 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-08-07 13:19:50,688 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-08-07 13:19:50,691 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-08-07 13:19:50,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-08-07 13:19:50,701 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-08-07 13:19:50,703 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.08 01:19:50" (1/1) ... [2018-08-07 13:19:50,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d23126d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 01:19:50, skipping insertion in model container [2018-08-07 13:19:50,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.08 01:19:50" (1/1) ... [2018-08-07 13:19:51,175 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-08-07 13:19:52,944 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-07 13:19:52,964 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-08-07 13:19:54,173 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-07 13:19:54,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 01:19:54 WrapperNode [2018-08-07 13:19:54,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-08-07 13:19:54,937 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-08-07 13:19:54,937 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-08-07 13:19:54,937 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-08-07 13:19:54,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 01:19:54" (1/1) ... [2018-08-07 13:19:55,110 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 01:19:54" (1/1) ... [2018-08-07 13:19:55,257 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-08-07 13:19:55,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-08-07 13:19:55,257 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-08-07 13:19:55,258 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-08-07 13:19:56,531 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 01:19:54" (1/1) ... [2018-08-07 13:19:56,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 01:19:54" (1/1) ... [2018-08-07 13:19:56,650 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 01:19:54" (1/1) ... [2018-08-07 13:19:56,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 01:19:54" (1/1) ... [2018-08-07 13:19:56,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 01:19:54" (1/1) ... [2018-08-07 13:19:56,961 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 01:19:54" (1/1) ... [2018-08-07 13:19:57,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 01:19:54" (1/1) ... [2018-08-07 13:19:57,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-08-07 13:19:57,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-08-07 13:19:57,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-08-07 13:19:57,204 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-08-07 13:19:57,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 01:19:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-08-07 13:19:57,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-08-07 13:19:57,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-08-07 13:19:57,266 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output5 [2018-08-07 13:19:57,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output5 [2018-08-07 13:19:57,266 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-08-07 13:19:57,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-08-07 13:19:57,266 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output6 [2018-08-07 13:19:57,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output6 [2018-08-07 13:19:57,266 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-08-07 13:19:57,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-08-07 13:19:57,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-08-07 13:19:57,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-08-07 13:19:57,267 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-08-07 13:19:57,267 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-08-07 13:19:57,268 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-08-07 13:19:57,268 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-08-07 13:19:57,268 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-08-07 13:19:57,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-08-07 13:20:20,580 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-08-07 13:20:20,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.08 01:20:20 BoogieIcfgContainer [2018-08-07 13:20:20,581 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-08-07 13:20:20,582 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-08-07 13:20:20,582 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-08-07 13:20:20,586 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-08-07 13:20:20,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.08 01:19:50" (1/3) ... [2018-08-07 13:20:20,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a40dfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.08 01:20:20, skipping insertion in model container [2018-08-07 13:20:20,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 01:19:54" (2/3) ... [2018-08-07 13:20:20,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a40dfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.08 01:20:20, skipping insertion in model container [2018-08-07 13:20:20,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.08 01:20:20" (3/3) ... [2018-08-07 13:20:20,589 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label08_true-unreach-call.c [2018-08-07 13:20:20,599 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-08-07 13:20:20,610 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-08-07 13:20:20,682 INFO L129 ementStrategyFactory]: Using default assertion order modulation [2018-08-07 13:20:20,683 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-08-07 13:20:20,684 INFO L382 AbstractCegarLoop]: Hoare is true [2018-08-07 13:20:20,684 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-08-07 13:20:20,684 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-08-07 13:20:20,684 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-08-07 13:20:20,684 INFO L386 AbstractCegarLoop]: Difference is false [2018-08-07 13:20:20,684 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-08-07 13:20:20,684 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-08-07 13:20:20,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-08-07 13:20:20,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-08-07 13:20:20,752 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 13:20:20,753 INFO L376 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] [2018-08-07 13:20:20,754 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 13:20:20,759 INFO L82 PathProgramCache]: Analyzing trace with hash -644879042, now seen corresponding path program 1 times [2018-08-07 13:20:20,761 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 13:20:20,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:20:20,807 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:20:20,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:20:20,807 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 13:20:20,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:20:21,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 13:20:21,249 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 13:20:21,250 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-08-07 13:20:21,250 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 13:20:21,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-08-07 13:20:21,272 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-08-07 13:20:21,272 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-08-07 13:20:21,275 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 4 states. [2018-08-07 13:20:47,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 13:20:47,110 INFO L93 Difference]: Finished difference Result 6465 states and 12332 transitions. [2018-08-07 13:20:47,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-08-07 13:20:47,119 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2018-08-07 13:20:47,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 13:20:47,168 INFO L225 Difference]: With dead ends: 6465 [2018-08-07 13:20:47,168 INFO L226 Difference]: Without dead ends: 4681 [2018-08-07 13:20:47,182 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-08-07 13:20:47,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4681 states. [2018-08-07 13:20:47,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4681 to 3200. [2018-08-07 13:20:47,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3200 states. [2018-08-07 13:20:47,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3200 states to 3200 states and 5132 transitions. [2018-08-07 13:20:47,428 INFO L78 Accepts]: Start accepts. Automaton has 3200 states and 5132 transitions. Word has length 44 [2018-08-07 13:20:47,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 13:20:47,429 INFO L480 AbstractCegarLoop]: Abstraction has 3200 states and 5132 transitions. [2018-08-07 13:20:47,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-08-07 13:20:47,430 INFO L276 IsEmpty]: Start isEmpty. Operand 3200 states and 5132 transitions. [2018-08-07 13:20:47,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-08-07 13:20:47,436 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 13:20:47,436 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 13:20:47,437 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 13:20:47,437 INFO L82 PathProgramCache]: Analyzing trace with hash -2117596845, now seen corresponding path program 1 times [2018-08-07 13:20:47,437 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 13:20:47,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:20:47,439 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:20:47,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:20:47,439 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 13:20:47,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:20:48,032 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 13:20:48,033 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 13:20:48,033 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-08-07 13:20:48,033 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 13:20:48,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-08-07 13:20:48,036 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-08-07 13:20:48,036 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-08-07 13:20:48,036 INFO L87 Difference]: Start difference. First operand 3200 states and 5132 transitions. Second operand 6 states. [2018-08-07 13:21:23,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 13:21:23,121 INFO L93 Difference]: Finished difference Result 9649 states and 15539 transitions. [2018-08-07 13:21:23,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-08-07 13:21:23,122 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2018-08-07 13:21:23,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 13:21:23,159 INFO L225 Difference]: With dead ends: 9649 [2018-08-07 13:21:23,159 INFO L226 Difference]: Without dead ends: 6455 [2018-08-07 13:21:23,168 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-08-07 13:21:23,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6455 states. [2018-08-07 13:21:23,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6455 to 6345. [2018-08-07 13:21:23,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6345 states. [2018-08-07 13:21:23,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6345 states to 6345 states and 8983 transitions. [2018-08-07 13:21:23,351 INFO L78 Accepts]: Start accepts. Automaton has 6345 states and 8983 transitions. Word has length 116 [2018-08-07 13:21:23,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 13:21:23,352 INFO L480 AbstractCegarLoop]: Abstraction has 6345 states and 8983 transitions. [2018-08-07 13:21:23,353 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-08-07 13:21:23,353 INFO L276 IsEmpty]: Start isEmpty. Operand 6345 states and 8983 transitions. [2018-08-07 13:21:23,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-08-07 13:21:23,360 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 13:21:23,361 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 13:21:23,361 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 13:21:23,365 INFO L82 PathProgramCache]: Analyzing trace with hash -782035094, now seen corresponding path program 1 times [2018-08-07 13:21:23,365 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 13:21:23,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:21:23,366 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:21:23,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:21:23,366 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 13:21:23,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:21:23,623 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 13:21:23,624 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 13:21:23,624 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-08-07 13:21:23,624 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 13:21:23,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-08-07 13:21:23,625 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-08-07 13:21:23,625 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-08-07 13:21:23,625 INFO L87 Difference]: Start difference. First operand 6345 states and 8983 transitions. Second operand 6 states. [2018-08-07 13:21:51,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 13:21:51,675 INFO L93 Difference]: Finished difference Result 24604 states and 35805 transitions. [2018-08-07 13:21:51,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-08-07 13:21:51,677 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2018-08-07 13:21:51,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 13:21:51,761 INFO L225 Difference]: With dead ends: 24604 [2018-08-07 13:21:51,761 INFO L226 Difference]: Without dead ends: 18265 [2018-08-07 13:21:51,789 INFO L603 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 [2018-08-07 13:21:51,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18265 states. [2018-08-07 13:21:52,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18265 to 18032. [2018-08-07 13:21:52,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18032 states. [2018-08-07 13:21:52,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18032 states to 18032 states and 24386 transitions. [2018-08-07 13:21:52,272 INFO L78 Accepts]: Start accepts. Automaton has 18032 states and 24386 transitions. Word has length 118 [2018-08-07 13:21:52,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 13:21:52,273 INFO L480 AbstractCegarLoop]: Abstraction has 18032 states and 24386 transitions. [2018-08-07 13:21:52,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-08-07 13:21:52,275 INFO L276 IsEmpty]: Start isEmpty. Operand 18032 states and 24386 transitions. [2018-08-07 13:21:52,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-08-07 13:21:52,277 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 13:21:52,278 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 13:21:52,278 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 13:21:52,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1055799919, now seen corresponding path program 1 times [2018-08-07 13:21:52,282 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 13:21:52,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:21:52,284 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:21:52,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:21:52,284 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 13:21:52,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:21:52,555 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 13:21:52,555 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 13:21:52,555 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-08-07 13:21:52,555 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 13:21:52,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-07 13:21:52,556 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-07 13:21:52,557 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-08-07 13:21:52,557 INFO L87 Difference]: Start difference. First operand 18032 states and 24386 transitions. Second operand 5 states. [2018-08-07 13:22:20,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 13:22:20,519 INFO L93 Difference]: Finished difference Result 54763 states and 75613 transitions. [2018-08-07 13:22:20,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-08-07 13:22:20,520 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2018-08-07 13:22:20,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 13:22:20,630 INFO L225 Difference]: With dead ends: 54763 [2018-08-07 13:22:20,630 INFO L226 Difference]: Without dead ends: 36737 [2018-08-07 13:22:20,686 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-08-07 13:22:20,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36737 states. [2018-08-07 13:22:21,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36737 to 36285. [2018-08-07 13:22:21,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36285 states. [2018-08-07 13:22:21,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36285 states to 36285 states and 47922 transitions. [2018-08-07 13:22:21,423 INFO L78 Accepts]: Start accepts. Automaton has 36285 states and 47922 transitions. Word has length 126 [2018-08-07 13:22:21,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 13:22:21,424 INFO L480 AbstractCegarLoop]: Abstraction has 36285 states and 47922 transitions. [2018-08-07 13:22:21,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-07 13:22:21,424 INFO L276 IsEmpty]: Start isEmpty. Operand 36285 states and 47922 transitions. [2018-08-07 13:22:21,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-08-07 13:22:21,429 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 13:22:21,429 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 13:22:21,430 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 13:22:21,430 INFO L82 PathProgramCache]: Analyzing trace with hash -875080436, now seen corresponding path program 1 times [2018-08-07 13:22:21,430 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 13:22:21,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:22:21,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:22:21,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:22:21,436 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 13:22:21,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:22:21,740 WARN L170 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-08-07 13:22:22,220 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 13:22:22,220 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 13:22:22,220 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-08-07 13:22:22,221 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 13:22:22,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-08-07 13:22:22,221 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-08-07 13:22:22,222 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-08-07 13:22:22,222 INFO L87 Difference]: Start difference. First operand 36285 states and 47922 transitions. Second operand 6 states. [2018-08-07 13:22:52,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 13:22:52,126 INFO L93 Difference]: Finished difference Result 99015 states and 134571 transitions. [2018-08-07 13:22:52,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-08-07 13:22:52,127 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 209 [2018-08-07 13:22:52,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 13:22:52,302 INFO L225 Difference]: With dead ends: 99015 [2018-08-07 13:22:52,302 INFO L226 Difference]: Without dead ends: 62736 [2018-08-07 13:22:52,398 INFO L603 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 [2018-08-07 13:22:52,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62736 states. [2018-08-07 13:22:53,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62736 to 62223. [2018-08-07 13:22:53,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62223 states. [2018-08-07 13:22:53,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62223 states to 62223 states and 81550 transitions. [2018-08-07 13:22:53,419 INFO L78 Accepts]: Start accepts. Automaton has 62223 states and 81550 transitions. Word has length 209 [2018-08-07 13:22:53,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 13:22:53,419 INFO L480 AbstractCegarLoop]: Abstraction has 62223 states and 81550 transitions. [2018-08-07 13:22:53,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-08-07 13:22:53,420 INFO L276 IsEmpty]: Start isEmpty. Operand 62223 states and 81550 transitions. [2018-08-07 13:22:53,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-08-07 13:22:53,434 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 13:22:53,434 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2018-08-07 13:22:53,435 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 13:22:53,435 INFO L82 PathProgramCache]: Analyzing trace with hash 544249999, now seen corresponding path program 1 times [2018-08-07 13:22:53,435 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 13:22:53,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:22:53,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:22:53,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:22:53,436 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 13:22:53,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:22:53,682 WARN L170 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-08-07 13:22:54,201 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 111 proven. 159 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-08-07 13:22:54,201 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 13:22:54,201 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 13:22:54,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:22:54,210 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 13:22:54,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:22:54,388 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 13:22:54,679 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2018-08-07 13:22:54,679 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 13:22:55,203 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2018-08-07 13:22:55,237 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-08-07 13:22:55,238 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 8 [2018-08-07 13:22:55,238 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 13:22:55,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-08-07 13:22:55,239 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-08-07 13:22:55,239 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-08-07 13:22:55,240 INFO L87 Difference]: Start difference. First operand 62223 states and 81550 transitions. Second operand 3 states. [2018-08-07 13:23:08,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 13:23:08,627 INFO L93 Difference]: Finished difference Result 136427 states and 182931 transitions. [2018-08-07 13:23:08,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-08-07 13:23:08,634 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 342 [2018-08-07 13:23:08,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 13:23:08,937 INFO L225 Difference]: With dead ends: 136427 [2018-08-07 13:23:08,937 INFO L226 Difference]: Without dead ends: 74210 [2018-08-07 13:23:09,118 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 690 GetRequests, 683 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-08-07 13:23:09,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74210 states. [2018-08-07 13:23:10,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74210 to 74057. [2018-08-07 13:23:10,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74057 states. [2018-08-07 13:23:11,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74057 states to 74057 states and 95115 transitions. [2018-08-07 13:23:11,106 INFO L78 Accepts]: Start accepts. Automaton has 74057 states and 95115 transitions. Word has length 342 [2018-08-07 13:23:11,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 13:23:11,106 INFO L480 AbstractCegarLoop]: Abstraction has 74057 states and 95115 transitions. [2018-08-07 13:23:11,107 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-08-07 13:23:11,107 INFO L276 IsEmpty]: Start isEmpty. Operand 74057 states and 95115 transitions. [2018-08-07 13:23:11,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2018-08-07 13:23:11,125 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 13:23:11,125 INFO L376 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1] [2018-08-07 13:23:11,125 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 13:23:11,126 INFO L82 PathProgramCache]: Analyzing trace with hash -836130793, now seen corresponding path program 1 times [2018-08-07 13:23:11,126 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 13:23:11,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:23:11,127 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:23:11,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:23:11,127 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 13:23:11,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:23:11,423 WARN L170 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-08-07 13:23:11,927 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 74 proven. 94 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-08-07 13:23:11,928 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 13:23:11,928 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 13:23:11,942 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:23:11,943 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 13:23:12,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:23:12,096 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 13:23:12,376 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-08-07 13:23:12,377 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 13:23:12,600 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 74 proven. 94 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-08-07 13:23:12,623 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-08-07 13:23:12,623 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-08-07 13:23:12,623 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 13:23:12,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-07 13:23:12,624 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-07 13:23:12,625 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-08-07 13:23:12,625 INFO L87 Difference]: Start difference. First operand 74057 states and 95115 transitions. Second operand 5 states. [2018-08-07 13:23:30,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 13:23:30,515 INFO L93 Difference]: Finished difference Result 193769 states and 265427 transitions. [2018-08-07 13:23:30,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-08-07 13:23:30,525 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 345 [2018-08-07 13:23:30,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 13:23:30,909 INFO L225 Difference]: With dead ends: 193769 [2018-08-07 13:23:30,909 INFO L226 Difference]: Without dead ends: 119718 [2018-08-07 13:23:31,032 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 699 GetRequests, 684 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2018-08-07 13:23:31,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119718 states. [2018-08-07 13:23:32,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119718 to 118571. [2018-08-07 13:23:32,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118571 states. [2018-08-07 13:23:33,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118571 states to 118571 states and 157630 transitions. [2018-08-07 13:23:33,090 INFO L78 Accepts]: Start accepts. Automaton has 118571 states and 157630 transitions. Word has length 345 [2018-08-07 13:23:33,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 13:23:33,091 INFO L480 AbstractCegarLoop]: Abstraction has 118571 states and 157630 transitions. [2018-08-07 13:23:33,091 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-07 13:23:33,091 INFO L276 IsEmpty]: Start isEmpty. Operand 118571 states and 157630 transitions. [2018-08-07 13:23:33,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2018-08-07 13:23:33,107 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 13:23:33,108 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 13:23:33,108 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 13:23:33,109 INFO L82 PathProgramCache]: Analyzing trace with hash 2072910471, now seen corresponding path program 1 times [2018-08-07 13:23:33,109 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 13:23:33,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:23:33,110 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:23:33,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 13:23:33,110 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 13:23:33,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:23:33,676 WARN L170 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-08-07 13:23:34,622 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-08-07 13:23:34,623 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 13:23:34,623 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-08-07 13:23:34,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 13:23:34,631 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 13:23:34,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 13:23:34,821 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 13:23:35,003 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 13:23:35,003 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 13:23:35,232 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 13:23:35,253 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-08-07 13:23:35,253 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2018-08-07 13:23:35,253 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 13:23:35,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-08-07 13:23:35,254 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-08-07 13:23:35,254 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-08-07 13:23:35,254 INFO L87 Difference]: Start difference. First operand 118571 states and 157630 transitions. Second operand 3 states. Received shutdown request... [2018-08-07 13:23:47,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-08-07 13:23:47,623 WARN L549 AbstractCegarLoop]: Verification canceled [2018-08-07 13:23:47,628 WARN L202 ceAbstractionStarter]: Timeout [2018-08-07 13:23:47,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.08 01:23:47 BoogieIcfgContainer [2018-08-07 13:23:47,629 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-08-07 13:23:47,629 INFO L168 Benchmark]: Toolchain (without parser) took 236943.13 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -912.8 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-08-07 13:23:47,631 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-08-07 13:23:47,632 INFO L168 Benchmark]: CACSL2BoogieTranslator took 4245.54 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 209.7 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -118.6 MB). Peak memory consumption was 486.9 MB. Max. memory is 7.1 GB. [2018-08-07 13:23:47,633 INFO L168 Benchmark]: Boogie Procedure Inliner took 320.11 ms. Allocated memory is still 1.8 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 49.3 MB). Peak memory consumption was 49.3 MB. Max. memory is 7.1 GB. [2018-08-07 13:23:47,633 INFO L168 Benchmark]: Boogie Preprocessor took 1946.58 ms. Allocated memory was 1.8 GB in the beginning and 2.5 GB in the end (delta: 777.5 MB). Free memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: -780.3 MB). Peak memory consumption was 129.1 MB. Max. memory is 7.1 GB. [2018-08-07 13:23:47,634 INFO L168 Benchmark]: RCFGBuilder took 23376.87 ms. Allocated memory was 2.5 GB in the beginning and 2.9 GB in the end (delta: 327.7 MB). Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 197.5 MB). Peak memory consumption was 997.7 MB. Max. memory is 7.1 GB. [2018-08-07 13:23:47,635 INFO L168 Benchmark]: TraceAbstraction took 207046.74 ms. Allocated memory was 2.9 GB in the beginning and 3.7 GB in the end (delta: 872.4 MB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -260.6 MB). Peak memory consumption was 611.8 MB. Max. memory is 7.1 GB. [2018-08-07 13:23:47,644 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 4245.54 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 209.7 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -118.6 MB). Peak memory consumption was 486.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 320.11 ms. Allocated memory is still 1.8 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 49.3 MB). Peak memory consumption was 49.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1946.58 ms. Allocated memory was 1.8 GB in the beginning and 2.5 GB in the end (delta: 777.5 MB). Free memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: -780.3 MB). Peak memory consumption was 129.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 23376.87 ms. Allocated memory was 2.5 GB in the beginning and 2.9 GB in the end (delta: 327.7 MB). Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 197.5 MB). Peak memory consumption was 997.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 207046.74 ms. Allocated memory was 2.9 GB in the beginning and 3.7 GB in the end (delta: 872.4 MB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -260.6 MB). Peak memory consumption was 611.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 127]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 127). Cancelled while BasicCegarLoop was constructing difference of abstraction (118571states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement), while ReachableStatesComputation was computing reachable states (237823 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 206.9s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 192.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8826 SDtfs, 40128 SDslu, 5489 SDs, 0 SdLazy, 68783 SolverSat, 19314 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 165.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2503 GetRequests, 2444 SyntacticMatches, 10 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=118571occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 6.6s AutomataMinimizationTime, 7 MinimizatonAttempts, 4089 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 3049 NumberOfCodeBlocks, 3049 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 4253 ConstructedInterpolants, 0 QuantifiedInterpolants, 3365172 SizeOfPredicates, 9 NumberOfNonLiveVariables, 1870 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 14 InterpolantComputations, 10 PerfectInterpolantSequences, 1448/1828 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem19_label08_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-08-07_13-23-47-660.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem19_label08_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-08-07_13-23-47-660.csv Completed graceful shutdown