java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label50_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 12:40:27,382 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 12:40:27,384 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 12:40:27,397 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 12:40:27,397 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 12:40:27,398 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 12:40:27,400 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 12:40:27,402 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 12:40:27,403 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 12:40:27,404 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 12:40:27,405 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 12:40:27,406 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 12:40:27,406 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 12:40:27,407 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 12:40:27,409 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 12:40:27,413 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 12:40:27,414 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 12:40:27,419 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 12:40:27,421 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 12:40:27,423 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 12:40:27,426 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 12:40:27,428 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 12:40:27,435 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 12:40:27,435 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 12:40:27,436 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 12:40:27,437 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 12:40:27,439 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 12:40:27,440 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 12:40:27,443 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 12:40:27,444 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 12:40:27,444 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 12:40:27,445 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 12:40:27,445 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 12:40:27,445 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 12:40:27,449 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 12:40:27,450 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 12:40:27,451 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 [2018-07-24 12:40:27,478 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 12:40:27,479 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 12:40:27,482 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 12:40:27,483 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 12:40:27,483 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 12:40:27,483 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 12:40:27,483 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 12:40:27,484 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 12:40:27,484 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 12:40:27,484 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 12:40:27,484 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 12:40:27,485 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 12:40:27,486 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 12:40:27,486 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 12:40:27,487 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 12:40:27,487 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 12:40:27,487 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 12:40:27,487 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 12:40:27,487 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 12:40:27,488 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 12:40:27,488 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 12:40:27,488 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 12:40:27,489 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 12:40:27,490 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:40:27,490 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 12:40:27,490 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 12:40:27,490 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 12:40:27,490 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 12:40:27,491 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 12:40:27,491 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 12:40:27,491 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 12:40:27,491 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 12:40:27,491 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 12:40:27,541 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 12:40:27,557 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 12:40:27,563 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 12:40:27,565 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 12:40:27,565 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 12:40:27,566 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label50_false-unreach-call.c [2018-07-24 12:40:27,938 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21660a7ac/b402c519f9804d7aab829070e21f3b08/FLAGaec00891f [2018-07-24 12:40:28,551 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 12:40:28,552 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label50_false-unreach-call.c [2018-07-24 12:40:28,599 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21660a7ac/b402c519f9804d7aab829070e21f3b08/FLAGaec00891f [2018-07-24 12:40:28,620 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21660a7ac/b402c519f9804d7aab829070e21f3b08 [2018-07-24 12:40:28,636 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 12:40:28,638 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 12:40:28,639 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 12:40:28,640 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 12:40:28,648 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 12:40:28,649 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:40:28" (1/1) ... [2018-07-24 12:40:28,653 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47d9fee4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:40:28, skipping insertion in model container [2018-07-24 12:40:28,653 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:40:28" (1/1) ... [2018-07-24 12:40:29,165 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 12:40:30,857 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:40:30,879 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 12:40:32,022 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:40:32,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:40:32 WrapperNode [2018-07-24 12:40:32,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 12:40:32,757 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 12:40:32,757 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 12:40:32,757 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 12:40:32,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:40:32" (1/1) ... [2018-07-24 12:40:32,940 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:40:32" (1/1) ... [2018-07-24 12:40:33,068 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 12:40:33,069 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 12:40:33,069 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 12:40:33,069 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 12:40:34,415 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:40:32" (1/1) ... [2018-07-24 12:40:34,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:40:32" (1/1) ... [2018-07-24 12:40:34,543 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:40:32" (1/1) ... [2018-07-24 12:40:34,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:40:32" (1/1) ... [2018-07-24 12:40:34,925 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:40:32" (1/1) ... [2018-07-24 12:40:34,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:40:32" (1/1) ... [2018-07-24 12:40:35,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:40:32" (1/1) ... [2018-07-24 12:40:35,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 12:40:35,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 12:40:35,448 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 12:40:35,448 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 12:40:35,450 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:40:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:40:35,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 12:40:35,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 12:40:35,519 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4 [2018-07-24 12:40:35,519 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4 [2018-07-24 12:40:35,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 12:40:35,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 12:40:35,519 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output5 [2018-07-24 12:40:35,519 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output5 [2018-07-24 12:40:35,519 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 12:40:35,520 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 12:40:35,520 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 12:40:35,520 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 12:40:35,520 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-24 12:40:35,520 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-24 12:40:35,521 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output6 [2018-07-24 12:40:35,521 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output6 [2018-07-24 12:40:35,521 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 12:40:35,521 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 12:40:55,501 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 12:40:55,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:40:55 BoogieIcfgContainer [2018-07-24 12:40:55,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 12:40:55,503 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 12:40:55,503 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 12:40:55,506 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 12:40:55,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 12:40:28" (1/3) ... [2018-07-24 12:40:55,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10920bf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:40:55, skipping insertion in model container [2018-07-24 12:40:55,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:40:32" (2/3) ... [2018-07-24 12:40:55,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10920bf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:40:55, skipping insertion in model container [2018-07-24 12:40:55,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:40:55" (3/3) ... [2018-07-24 12:40:55,510 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label50_false-unreach-call.c [2018-07-24 12:40:55,520 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 12:40:55,529 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 12:40:55,597 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 12:40:55,598 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 12:40:55,598 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 12:40:55,598 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 12:40:55,599 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 12:40:55,599 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 12:40:55,599 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 12:40:55,599 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 12:40:55,599 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 12:40:55,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-07-24 12:40:55,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-07-24 12:40:55,661 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:40:55,662 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:40:55,663 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:40:55,668 INFO L82 PathProgramCache]: Analyzing trace with hash 675869568, now seen corresponding path program 1 times [2018-07-24 12:40:55,671 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:40:55,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:40:55,722 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:40:55,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:40:55,723 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:40:55,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:40:56,058 WARN L169 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:40:56,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:40:56,137 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:40:56,138 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 12:40:56,138 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:40:56,144 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:40:56,159 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:40:56,160 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:40:56,162 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-07-24 12:41:14,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:41:14,106 INFO L93 Difference]: Finished difference Result 4998 states and 9417 transitions. [2018-07-24 12:41:14,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:41:14,115 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2018-07-24 12:41:14,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:41:14,161 INFO L225 Difference]: With dead ends: 4998 [2018-07-24 12:41:14,162 INFO L226 Difference]: Without dead ends: 3218 [2018-07-24 12:41:14,174 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:41:14,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3218 states. [2018-07-24 12:41:14,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3218 to 3215. [2018-07-24 12:41:14,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3215 states. [2018-07-24 12:41:14,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3215 states to 3215 states and 5854 transitions. [2018-07-24 12:41:14,383 INFO L78 Accepts]: Start accepts. Automaton has 3215 states and 5854 transitions. Word has length 27 [2018-07-24 12:41:14,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:41:14,383 INFO L471 AbstractCegarLoop]: Abstraction has 3215 states and 5854 transitions. [2018-07-24 12:41:14,384 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:41:14,384 INFO L276 IsEmpty]: Start isEmpty. Operand 3215 states and 5854 transitions. [2018-07-24 12:41:14,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-07-24 12:41:14,391 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:41:14,391 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 12:41:14,392 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:41:14,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1648507094, now seen corresponding path program 1 times [2018-07-24 12:41:14,392 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:41:14,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:41:14,393 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:41:14,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:41:14,394 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:41:14,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:41:14,732 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:41:14,732 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:41:14,733 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:41:14,733 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:41:14,735 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:41:14,736 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:41:14,736 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:41:14,736 INFO L87 Difference]: Start difference. First operand 3215 states and 5854 transitions. Second operand 6 states. [2018-07-24 12:41:41,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:41:41,462 INFO L93 Difference]: Finished difference Result 10744 states and 19770 transitions. [2018-07-24 12:41:41,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:41:41,463 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2018-07-24 12:41:41,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:41:41,516 INFO L225 Difference]: With dead ends: 10744 [2018-07-24 12:41:41,516 INFO L226 Difference]: Without dead ends: 7535 [2018-07-24 12:41:41,532 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:41:41,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7535 states. [2018-07-24 12:41:41,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7535 to 7498. [2018-07-24 12:41:41,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7498 states. [2018-07-24 12:41:41,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7498 states to 7498 states and 12452 transitions. [2018-07-24 12:41:41,782 INFO L78 Accepts]: Start accepts. Automaton has 7498 states and 12452 transitions. Word has length 99 [2018-07-24 12:41:41,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:41:41,783 INFO L471 AbstractCegarLoop]: Abstraction has 7498 states and 12452 transitions. [2018-07-24 12:41:41,783 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:41:41,783 INFO L276 IsEmpty]: Start isEmpty. Operand 7498 states and 12452 transitions. [2018-07-24 12:41:41,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-07-24 12:41:41,790 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:41:41,790 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:41:41,792 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:41:41,792 INFO L82 PathProgramCache]: Analyzing trace with hash -2098110411, now seen corresponding path program 1 times [2018-07-24 12:41:41,793 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:41:41,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:41:41,795 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:41:41,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:41:41,795 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:41:41,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:41:42,066 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:41:42,067 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:41:42,067 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:41:42,067 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:41:42,068 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:41:42,068 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:41:42,068 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:41:42,069 INFO L87 Difference]: Start difference. First operand 7498 states and 12452 transitions. Second operand 6 states. [2018-07-24 12:42:08,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:42:08,602 INFO L93 Difference]: Finished difference Result 22726 states and 38218 transitions. [2018-07-24 12:42:08,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 12:42:08,603 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2018-07-24 12:42:08,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:42:08,692 INFO L225 Difference]: With dead ends: 22726 [2018-07-24 12:42:08,692 INFO L226 Difference]: Without dead ends: 15234 [2018-07-24 12:42:08,720 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 12:42:08,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15234 states. [2018-07-24 12:42:09,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15234 to 15003. [2018-07-24 12:42:09,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15003 states. [2018-07-24 12:42:09,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15003 states to 15003 states and 24264 transitions. [2018-07-24 12:42:09,101 INFO L78 Accepts]: Start accepts. Automaton has 15003 states and 24264 transitions. Word has length 101 [2018-07-24 12:42:09,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:42:09,102 INFO L471 AbstractCegarLoop]: Abstraction has 15003 states and 24264 transitions. [2018-07-24 12:42:09,102 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:42:09,102 INFO L276 IsEmpty]: Start isEmpty. Operand 15003 states and 24264 transitions. [2018-07-24 12:42:09,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-07-24 12:42:09,105 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:42:09,106 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 12:42:09,106 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:42:09,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1171631542, now seen corresponding path program 1 times [2018-07-24 12:42:09,106 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:42:09,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:42:09,107 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:42:09,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:42:09,108 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:42:09,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:42:09,423 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:42:09,423 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:42:09,424 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 12:42:09,424 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:42:09,424 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:42:09,425 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:42:09,425 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 12:42:09,426 INFO L87 Difference]: Start difference. First operand 15003 states and 24264 transitions. Second operand 5 states. [2018-07-24 12:42:39,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:42:39,548 INFO L93 Difference]: Finished difference Result 42800 states and 69166 transitions. [2018-07-24 12:42:39,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 12:42:39,549 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2018-07-24 12:42:39,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:42:39,649 INFO L225 Difference]: With dead ends: 42800 [2018-07-24 12:42:39,649 INFO L226 Difference]: Without dead ends: 27803 [2018-07-24 12:42:39,691 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 12:42:39,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27803 states. [2018-07-24 12:42:40,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27803 to 27166. [2018-07-24 12:42:40,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27166 states. [2018-07-24 12:42:40,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27166 states to 27166 states and 37026 transitions. [2018-07-24 12:42:40,226 INFO L78 Accepts]: Start accepts. Automaton has 27166 states and 37026 transitions. Word has length 123 [2018-07-24 12:42:40,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:42:40,227 INFO L471 AbstractCegarLoop]: Abstraction has 27166 states and 37026 transitions. [2018-07-24 12:42:40,227 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:42:40,227 INFO L276 IsEmpty]: Start isEmpty. Operand 27166 states and 37026 transitions. [2018-07-24 12:42:40,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-07-24 12:42:40,235 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:42:40,235 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:42:40,235 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:42:40,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1250662836, now seen corresponding path program 1 times [2018-07-24 12:42:40,236 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:42:40,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:42:40,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:42:40,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:42:40,240 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:42:40,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:42:40,558 WARN L169 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:42:40,950 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 40 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:42:40,950 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:42:40,950 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:42:40,969 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:42:40,970 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:42:41,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:42:41,088 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:42:41,283 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-24 12:42:41,283 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:42:41,570 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-07-24 12:42:41,603 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 12:42:41,603 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 8 [2018-07-24 12:42:41,604 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:42:41,604 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:42:41,605 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:42:41,605 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-07-24 12:42:41,605 INFO L87 Difference]: Start difference. First operand 27166 states and 37026 transitions. Second operand 3 states. [2018-07-24 12:42:58,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:42:58,395 INFO L93 Difference]: Finished difference Result 77391 states and 109372 transitions. [2018-07-24 12:42:58,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:42:58,406 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 198 [2018-07-24 12:42:58,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:42:58,640 INFO L225 Difference]: With dead ends: 77391 [2018-07-24 12:42:58,641 INFO L226 Difference]: Without dead ends: 50231 [2018-07-24 12:42:58,757 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 395 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-07-24 12:42:58,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50231 states. [2018-07-24 12:42:59,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50231 to 50096. [2018-07-24 12:42:59,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50096 states. [2018-07-24 12:42:59,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50096 states to 50096 states and 67258 transitions. [2018-07-24 12:42:59,934 INFO L78 Accepts]: Start accepts. Automaton has 50096 states and 67258 transitions. Word has length 198 [2018-07-24 12:42:59,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:42:59,935 INFO L471 AbstractCegarLoop]: Abstraction has 50096 states and 67258 transitions. [2018-07-24 12:42:59,935 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:42:59,935 INFO L276 IsEmpty]: Start isEmpty. Operand 50096 states and 67258 transitions. [2018-07-24 12:42:59,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-07-24 12:42:59,940 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:42:59,940 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 12:42:59,941 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:42:59,941 INFO L82 PathProgramCache]: Analyzing trace with hash 918106688, now seen corresponding path program 1 times [2018-07-24 12:42:59,941 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:42:59,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:42:59,942 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:42:59,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:42:59,942 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:42:59,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:43:00,249 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:43:00,250 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:43:00,250 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 12:43:00,250 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:43:00,251 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 12:43:00,252 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 12:43:00,252 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:43:00,253 INFO L87 Difference]: Start difference. First operand 50096 states and 67258 transitions. Second operand 4 states. [2018-07-24 12:43:24,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:43:24,773 INFO L93 Difference]: Finished difference Result 145777 states and 205076 transitions. [2018-07-24 12:43:24,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 12:43:24,781 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 251 [2018-07-24 12:43:24,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:43:25,572 INFO L225 Difference]: With dead ends: 145777 [2018-07-24 12:43:25,572 INFO L226 Difference]: Without dead ends: 95687 [2018-07-24 12:43:25,659 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 12:43:25,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95687 states. [2018-07-24 12:43:26,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95687 to 95484. [2018-07-24 12:43:26,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95484 states. [2018-07-24 12:43:27,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95484 states to 95484 states and 125794 transitions. [2018-07-24 12:43:27,015 INFO L78 Accepts]: Start accepts. Automaton has 95484 states and 125794 transitions. Word has length 251 [2018-07-24 12:43:27,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:43:27,016 INFO L471 AbstractCegarLoop]: Abstraction has 95484 states and 125794 transitions. [2018-07-24 12:43:27,016 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 12:43:27,016 INFO L276 IsEmpty]: Start isEmpty. Operand 95484 states and 125794 transitions. [2018-07-24 12:43:27,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2018-07-24 12:43:27,040 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:43:27,041 INFO L353 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:43:27,041 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:43:27,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1353483764, now seen corresponding path program 1 times [2018-07-24 12:43:27,042 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:43:27,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:43:27,043 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:43:27,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:43:27,043 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:43:27,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:43:27,463 WARN L169 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:43:28,078 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 40 proven. 227 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:43:28,079 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:43:28,079 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-07-24 12:43:28,094 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:43:28,094 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:43:28,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:43:28,285 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:43:28,823 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-07-24 12:43:28,823 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:43:29,618 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 40 proven. 227 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:43:29,639 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:43:29,639 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-07-24 12:43:29,639 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:43:29,640 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:43:29,641 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:43:29,641 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-07-24 12:43:29,641 INFO L87 Difference]: Start difference. First operand 95484 states and 125794 transitions. Second operand 5 states. [2018-07-24 12:43:47,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:43:47,919 INFO L93 Difference]: Finished difference Result 215676 states and 295641 transitions. [2018-07-24 12:43:47,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:43:47,920 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 497 [2018-07-24 12:43:47,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:43:48,316 INFO L225 Difference]: With dead ends: 215676 [2018-07-24 12:43:48,316 INFO L226 Difference]: Without dead ends: 120198 [2018-07-24 12:43:48,459 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1003 GetRequests, 988 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-07-24 12:43:48,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120198 states. [2018-07-24 12:43:50,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120198 to 119763. [2018-07-24 12:43:50,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119763 states. [2018-07-24 12:43:51,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119763 states to 119763 states and 155863 transitions. [2018-07-24 12:43:51,038 INFO L78 Accepts]: Start accepts. Automaton has 119763 states and 155863 transitions. Word has length 497 [2018-07-24 12:43:51,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:43:51,039 INFO L471 AbstractCegarLoop]: Abstraction has 119763 states and 155863 transitions. [2018-07-24 12:43:51,039 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:43:51,039 INFO L276 IsEmpty]: Start isEmpty. Operand 119763 states and 155863 transitions. [2018-07-24 12:43:51,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2018-07-24 12:43:51,084 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:43:51,085 INFO L353 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 12:43:51,085 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:43:51,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1522245985, now seen corresponding path program 1 times [2018-07-24 12:43:51,085 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:43:51,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:43:51,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:43:51,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:43:51,087 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:43:51,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:43:51,557 WARN L169 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:43:52,299 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 60 proven. 295 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-07-24 12:43:52,300 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:43:52,300 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-07-24 12:43:52,313 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:43:52,313 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:43:52,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:43:52,519 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:43:52,794 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 323 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-07-24 12:43:52,795 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:43:53,815 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 60 proven. 295 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-07-24 12:43:53,835 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:43:53,836 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-07-24 12:43:53,836 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:43:53,837 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:43:53,837 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:43:53,837 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-07-24 12:43:53,837 INFO L87 Difference]: Start difference. First operand 119763 states and 155863 transitions. Second operand 5 states. [2018-07-24 12:44:13,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:44:13,343 INFO L93 Difference]: Finished difference Result 244762 states and 324162 transitions. [2018-07-24 12:44:13,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 12:44:13,344 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 566 [2018-07-24 12:44:13,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:44:13,674 INFO L225 Difference]: With dead ends: 244762 [2018-07-24 12:44:13,675 INFO L226 Difference]: Without dead ends: 125005 [2018-07-24 12:44:13,817 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1141 GetRequests, 1126 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-07-24 12:44:13,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125005 states. [2018-07-24 12:44:15,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125005 to 124502. [2018-07-24 12:44:15,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124502 states. [2018-07-24 12:44:16,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124502 states to 124502 states and 161460 transitions. [2018-07-24 12:44:16,688 INFO L78 Accepts]: Start accepts. Automaton has 124502 states and 161460 transitions. Word has length 566 [2018-07-24 12:44:16,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:44:16,688 INFO L471 AbstractCegarLoop]: Abstraction has 124502 states and 161460 transitions. [2018-07-24 12:44:16,689 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:44:16,689 INFO L276 IsEmpty]: Start isEmpty. Operand 124502 states and 161460 transitions. [2018-07-24 12:44:16,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2018-07-24 12:44:16,727 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:44:16,728 INFO L353 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 12:44:16,728 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:44:16,729 INFO L82 PathProgramCache]: Analyzing trace with hash 456153388, now seen corresponding path program 1 times [2018-07-24 12:44:16,729 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:44:16,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:44:16,730 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:44:16,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:44:16,730 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:44:16,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:44:17,393 INFO L134 CoverageAnalysis]: Checked inductivity of 622 backedges. 60 proven. 387 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2018-07-24 12:44:17,393 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:44:17,393 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:44:17,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:44:17,403 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:44:17,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:44:17,630 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:44:17,845 INFO L134 CoverageAnalysis]: Checked inductivity of 622 backedges. 415 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2018-07-24 12:44:17,846 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:44:19,184 INFO L134 CoverageAnalysis]: Checked inductivity of 622 backedges. 60 proven. 387 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2018-07-24 12:44:19,206 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:44:19,206 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 9 [2018-07-24 12:44:19,206 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:44:19,207 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:44:19,207 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:44:19,208 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:44:19,208 INFO L87 Difference]: Start difference. First operand 124502 states and 161460 transitions. Second operand 5 states. Received shutdown request... [2018-07-24 12:44:24,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 12:44:24,318 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 12:44:24,324 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 12:44:24,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 12:44:24 BoogieIcfgContainer [2018-07-24 12:44:24,325 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 12:44:24,326 INFO L168 Benchmark]: Toolchain (without parser) took 235689.17 ms. Allocated memory was 1.5 GB in the beginning and 3.4 GB in the end (delta: 1.8 GB). Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 357.3 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-07-24 12:44:24,327 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 12:44:24,327 INFO L168 Benchmark]: CACSL2BoogieTranslator took 4117.26 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 229.6 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -148.1 MB). Peak memory consumption was 488.2 MB. Max. memory is 7.1 GB. [2018-07-24 12:44:24,328 INFO L168 Benchmark]: Boogie Procedure Inliner took 311.75 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: 64.7 MB). Peak memory consumption was 64.7 MB. Max. memory is 7.1 GB. [2018-07-24 12:44:24,329 INFO L168 Benchmark]: Boogie Preprocessor took 2378.75 ms. Allocated memory was 1.8 GB in the beginning and 2.5 GB in the end (delta: 766.5 MB). Free memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: -774.5 MB). Peak memory consumption was 127.7 MB. Max. memory is 7.1 GB. [2018-07-24 12:44:24,330 INFO L168 Benchmark]: RCFGBuilder took 20054.22 ms. Allocated memory was 2.5 GB in the beginning and 2.9 GB in the end (delta: 361.2 MB). Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 151.3 MB). Peak memory consumption was 998.1 MB. Max. memory is 7.1 GB. [2018-07-24 12:44:24,331 INFO L168 Benchmark]: TraceAbstraction took 208821.68 ms. Allocated memory was 2.9 GB in the beginning and 3.4 GB in the end (delta: 474.5 MB). Free memory was 2.1 GB in the beginning and 1.0 GB in the end (delta: 1.1 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-07-24 12:44:24,336 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 4117.26 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 229.6 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -148.1 MB). Peak memory consumption was 488.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 311.75 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: 64.7 MB). Peak memory consumption was 64.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 2378.75 ms. Allocated memory was 1.8 GB in the beginning and 2.5 GB in the end (delta: 766.5 MB). Free memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: -774.5 MB). Peak memory consumption was 127.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 20054.22 ms. Allocated memory was 2.5 GB in the beginning and 2.9 GB in the end (delta: 361.2 MB). Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 151.3 MB). Peak memory consumption was 998.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208821.68 ms. Allocated memory was 2.9 GB in the beginning and 3.4 GB in the end (delta: 474.5 MB). Free memory was 2.1 GB in the beginning and 1.0 GB in the end (delta: 1.1 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 76). Cancelled while BasicCegarLoop was constructing difference of abstraction (124502states) and interpolant automaton (currently 8 states, 5 states before enhancement), while ReachableStatesComputation was computing reachable states (42245 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 208.7s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 188.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7579 SDtfs, 40616 SDslu, 5217 SDs, 0 SdLazy, 71693 SolverSat, 17810 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 160.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3911 GetRequests, 3838 SyntacticMatches, 13 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=124502occurred in iteration=8, 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: 9.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 2184 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 8.3s InterpolantComputationTime, 4441 NumberOfCodeBlocks, 4441 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 6344 ConstructedInterpolants, 0 QuantifiedInterpolants, 9810506 SizeOfPredicates, 5 NumberOfNonLiveVariables, 2860 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 17 InterpolantComputations, 10 PerfectInterpolantSequences, 2574/4457 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_label50_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_12-44-24-351.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem19_label50_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_12-44-24-351.csv Completed graceful shutdown