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_label54_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 12:50:55,531 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 12:50:55,534 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 12:50:55,551 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 12:50:55,552 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 12:50:55,553 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 12:50:55,554 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 12:50:55,556 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 12:50:55,559 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 12:50:55,565 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 12:50:55,566 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 12:50:55,570 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 12:50:55,571 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 12:50:55,575 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 12:50:55,576 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 12:50:55,577 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 12:50:55,578 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 12:50:55,582 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 12:50:55,587 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 12:50:55,588 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 12:50:55,589 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 12:50:55,591 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 12:50:55,597 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 12:50:55,597 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 12:50:55,597 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 12:50:55,598 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 12:50:55,599 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 12:50:55,601 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 12:50:55,601 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 12:50:55,603 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 12:50:55,603 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 12:50:55,605 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 12:50:55,605 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 12:50:55,605 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 12:50:55,606 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 12:50:55,608 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 12:50:55,608 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 [2018-09-10 12:50:55,634 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 12:50:55,635 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 12:50:55,636 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 12:50:55,636 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 12:50:55,637 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 12:50:55,637 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 12:50:55,637 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 12:50:55,640 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 12:50:55,640 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 12:50:55,640 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 12:50:55,640 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 12:50:55,641 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 12:50:55,641 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 12:50:55,642 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 12:50:55,642 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 12:50:55,642 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 12:50:55,642 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 12:50:55,642 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 12:50:55,643 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 12:50:55,643 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 12:50:55,643 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 12:50:55,645 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 12:50:55,645 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 12:50:55,645 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 12:50:55,646 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 12:50:55,646 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 12:50:55,646 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 12:50:55,646 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 12:50:55,646 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 12:50:55,647 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 12:50:55,647 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 12:50:55,647 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 12:50:55,647 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 12:50:55,709 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 12:50:55,732 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 12:50:55,737 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 12:50:55,739 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 12:50:55,739 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 12:50:55,740 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label54_true-unreach-call.c [2018-09-10 12:50:56,093 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/758c12d1b/c38225c981bb4a3295bf9b84077ab667/FLAG7b01ca1be [2018-09-10 12:50:56,732 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 12:50:56,733 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label54_true-unreach-call.c [2018-09-10 12:50:56,791 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/758c12d1b/c38225c981bb4a3295bf9b84077ab667/FLAG7b01ca1be [2018-09-10 12:50:56,813 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/758c12d1b/c38225c981bb4a3295bf9b84077ab667 [2018-09-10 12:50:56,828 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 12:50:56,833 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 12:50:56,834 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 12:50:56,834 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 12:50:56,842 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 12:50:56,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 12:50:56" (1/1) ... [2018-09-10 12:50:56,846 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a64aa8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:50:56, skipping insertion in model container [2018-09-10 12:50:56,847 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 12:50:56" (1/1) ... [2018-09-10 12:50:57,311 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 12:50:59,040 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 12:50:59,059 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 12:51:00,262 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 12:51:00,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:51:00 WrapperNode [2018-09-10 12:51:00,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 12:51:00,896 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 12:51:00,896 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 12:51:00,896 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 12:51:00,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:51:00" (1/1) ... [2018-09-10 12:51:01,055 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:51:00" (1/1) ... [2018-09-10 12:51:01,190 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 12:51:01,190 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 12:51:01,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 12:51:01,191 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 12:51:02,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:51:00" (1/1) ... [2018-09-10 12:51:02,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:51:00" (1/1) ... [2018-09-10 12:51:02,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:51:00" (1/1) ... [2018-09-10 12:51:02,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:51:00" (1/1) ... [2018-09-10 12:51:02,616 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:51:00" (1/1) ... [2018-09-10 12:51:02,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:51:00" (1/1) ... [2018-09-10 12:51:02,771 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:51:00" (1/1) ... [2018-09-10 12:51:02,887 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 12:51:02,888 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 12:51:02,888 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 12:51:02,888 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 12:51:02,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:51:00" (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 [2018-09-10 12:51:02,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 12:51:02,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 12:51:02,952 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 [2018-09-10 12:51:02,952 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 [2018-09-10 12:51:02,952 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 [2018-09-10 12:51:02,952 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 [2018-09-10 12:51:02,952 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 [2018-09-10 12:51:02,953 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 [2018-09-10 12:51:02,953 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 [2018-09-10 12:51:02,953 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 [2018-09-10 12:51:02,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 12:51:02,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 12:51:02,954 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 [2018-09-10 12:51:02,954 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 [2018-09-10 12:51:02,954 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 12:51:02,954 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 12:51:02,954 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 [2018-09-10 12:51:02,955 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 [2018-09-10 12:51:23,264 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 12:51:23,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 12:51:23 BoogieIcfgContainer [2018-09-10 12:51:23,266 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 12:51:23,267 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 12:51:23,267 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 12:51:23,270 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 12:51:23,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 12:50:56" (1/3) ... [2018-09-10 12:51:23,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1984b422 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 12:51:23, skipping insertion in model container [2018-09-10 12:51:23,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:51:00" (2/3) ... [2018-09-10 12:51:23,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1984b422 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 12:51:23, skipping insertion in model container [2018-09-10 12:51:23,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 12:51:23" (3/3) ... [2018-09-10 12:51:23,274 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label54_true-unreach-call.c [2018-09-10 12:51:23,283 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 12:51:23,293 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 12:51:23,360 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 12:51:23,361 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 12:51:23,361 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 12:51:23,361 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 12:51:23,361 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 12:51:23,362 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 12:51:23,362 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 12:51:23,362 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 12:51:23,362 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 12:51:23,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-09-10 12:51:23,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-09-10 12:51:23,428 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:51:23,430 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:51:23,431 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]=== [2018-09-10 12:51:23,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1174165856, now seen corresponding path program 1 times [2018-09-10 12:51:23,439 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:51:23,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:51:23,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:51:23,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:51:23,496 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:51:23,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:51:23,936 WARN L175 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:51:24,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:51:24,129 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:51:24,130 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 12:51:24,130 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:51:24,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:51:24,151 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:51:24,152 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 12:51:24,155 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-09-10 12:51:42,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:51:42,787 INFO L93 Difference]: Finished difference Result 5049 states and 9513 transitions. [2018-09-10 12:51:42,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:51:42,789 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2018-09-10 12:51:42,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:51:42,848 INFO L225 Difference]: With dead ends: 5049 [2018-09-10 12:51:42,849 INFO L226 Difference]: Without dead ends: 3269 [2018-09-10 12:51:42,860 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 12:51:42,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3269 states. [2018-09-10 12:51:43,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3269 to 3218. [2018-09-10 12:51:43,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3218 states. [2018-09-10 12:51:43,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3218 states to 3218 states and 5997 transitions. [2018-09-10 12:51:43,083 INFO L78 Accepts]: Start accepts. Automaton has 3218 states and 5997 transitions. Word has length 71 [2018-09-10 12:51:43,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:51:43,084 INFO L480 AbstractCegarLoop]: Abstraction has 3218 states and 5997 transitions. [2018-09-10 12:51:43,084 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:51:43,084 INFO L276 IsEmpty]: Start isEmpty. Operand 3218 states and 5997 transitions. [2018-09-10 12:51:43,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-09-10 12:51:43,104 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:51:43,105 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, 2, 2, 2, 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] [2018-09-10 12:51:43,105 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]=== [2018-09-10 12:51:43,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1061310538, now seen corresponding path program 1 times [2018-09-10 12:51:43,106 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:51:43,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:51:43,110 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:51:43,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:51:43,110 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:51:43,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:51:43,653 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:51:43,654 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:51:43,654 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 12:51:43,654 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:51:43,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:51:43,657 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:51:43,657 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:51:43,657 INFO L87 Difference]: Start difference. First operand 3218 states and 5997 transitions. Second operand 6 states. [2018-09-10 12:52:20,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:52:20,150 INFO L93 Difference]: Finished difference Result 9679 states and 18107 transitions. [2018-09-10 12:52:20,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 12:52:20,150 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-09-10 12:52:20,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:52:20,190 INFO L225 Difference]: With dead ends: 9679 [2018-09-10 12:52:20,190 INFO L226 Difference]: Without dead ends: 6467 [2018-09-10 12:52:20,200 INFO L604 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 [2018-09-10 12:52:20,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6467 states. [2018-09-10 12:52:20,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6467 to 6363. [2018-09-10 12:52:20,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6363 states. [2018-09-10 12:52:20,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6363 states to 6363 states and 10122 transitions. [2018-09-10 12:52:20,378 INFO L78 Accepts]: Start accepts. Automaton has 6363 states and 10122 transitions. Word has length 143 [2018-09-10 12:52:20,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:52:20,379 INFO L480 AbstractCegarLoop]: Abstraction has 6363 states and 10122 transitions. [2018-09-10 12:52:20,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:52:20,379 INFO L276 IsEmpty]: Start isEmpty. Operand 6363 states and 10122 transitions. [2018-09-10 12:52:20,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-09-10 12:52:20,383 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:52:20,383 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, 2, 2, 2, 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] [2018-09-10 12:52:20,383 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]=== [2018-09-10 12:52:20,384 INFO L82 PathProgramCache]: Analyzing trace with hash 478969252, now seen corresponding path program 1 times [2018-09-10 12:52:20,384 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:52:20,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:52:20,385 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:52:20,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:52:20,385 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:52:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:52:20,674 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:52:20,675 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:52:20,675 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 12:52:20,675 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:52:20,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:52:20,676 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:52:20,676 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:52:20,676 INFO L87 Difference]: Start difference. First operand 6363 states and 10122 transitions. Second operand 6 states. [2018-09-10 12:52:37,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:52:37,071 INFO L93 Difference]: Finished difference Result 18762 states and 30589 transitions. [2018-09-10 12:52:37,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:52:37,071 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 150 [2018-09-10 12:52:37,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:52:37,132 INFO L225 Difference]: With dead ends: 18762 [2018-09-10 12:52:37,132 INFO L226 Difference]: Without dead ends: 12405 [2018-09-10 12:52:37,152 INFO L604 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 [2018-09-10 12:52:37,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12405 states. [2018-09-10 12:52:37,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12405 to 12198. [2018-09-10 12:52:37,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12198 states. [2018-09-10 12:52:37,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12198 states to 12198 states and 19173 transitions. [2018-09-10 12:52:37,474 INFO L78 Accepts]: Start accepts. Automaton has 12198 states and 19173 transitions. Word has length 150 [2018-09-10 12:52:37,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:52:37,475 INFO L480 AbstractCegarLoop]: Abstraction has 12198 states and 19173 transitions. [2018-09-10 12:52:37,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:52:37,475 INFO L276 IsEmpty]: Start isEmpty. Operand 12198 states and 19173 transitions. [2018-09-10 12:52:37,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-09-10 12:52:37,480 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:52:37,484 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:52:37,484 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]=== [2018-09-10 12:52:37,485 INFO L82 PathProgramCache]: Analyzing trace with hash 2079698610, now seen corresponding path program 1 times [2018-09-10 12:52:37,485 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:52:37,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:52:37,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:52:37,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:52:37,487 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:52:37,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:52:37,770 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:52:37,770 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:52:37,770 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 12:52:37,771 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:52:37,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:52:37,771 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:52:37,771 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:52:37,772 INFO L87 Difference]: Start difference. First operand 12198 states and 19173 transitions. Second operand 6 states. [2018-09-10 12:53:02,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:53:02,129 INFO L93 Difference]: Finished difference Result 36802 states and 59015 transitions. [2018-09-10 12:53:02,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 12:53:02,132 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2018-09-10 12:53:02,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:53:02,231 INFO L225 Difference]: With dead ends: 36802 [2018-09-10 12:53:02,231 INFO L226 Difference]: Without dead ends: 24610 [2018-09-10 12:53:02,270 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-10 12:53:02,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24610 states. [2018-09-10 12:53:02,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24610 to 24108. [2018-09-10 12:53:02,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24108 states. [2018-09-10 12:53:02,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24108 states to 24108 states and 36201 transitions. [2018-09-10 12:53:02,848 INFO L78 Accepts]: Start accepts. Automaton has 24108 states and 36201 transitions. Word has length 158 [2018-09-10 12:53:02,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:53:02,848 INFO L480 AbstractCegarLoop]: Abstraction has 24108 states and 36201 transitions. [2018-09-10 12:53:02,848 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:53:02,848 INFO L276 IsEmpty]: Start isEmpty. Operand 24108 states and 36201 transitions. [2018-09-10 12:53:02,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-09-10 12:53:02,852 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:53:02,853 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, 2, 2, 2, 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] [2018-09-10 12:53:02,853 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]=== [2018-09-10 12:53:02,853 INFO L82 PathProgramCache]: Analyzing trace with hash 2015304975, now seen corresponding path program 1 times [2018-09-10 12:53:02,853 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:53:02,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:53:02,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:53:02,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:53:02,856 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:53:02,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:53:03,461 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:53:03,462 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:53:03,462 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 12:53:03,462 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:53:03,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:53:03,464 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:53:03,464 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:53:03,464 INFO L87 Difference]: Start difference. First operand 24108 states and 36201 transitions. Second operand 6 states. [2018-09-10 12:53:54,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:53:54,074 INFO L93 Difference]: Finished difference Result 88842 states and 148993 transitions. [2018-09-10 12:53:54,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-10 12:53:54,075 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 234 [2018-09-10 12:53:54,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:53:54,322 INFO L225 Difference]: With dead ends: 88842 [2018-09-10 12:53:54,323 INFO L226 Difference]: Without dead ends: 64740 [2018-09-10 12:53:54,422 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-10 12:53:54,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64740 states. [2018-09-10 12:53:55,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64740 to 64291. [2018-09-10 12:53:55,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64291 states. [2018-09-10 12:53:55,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64291 states to 64291 states and 94135 transitions. [2018-09-10 12:53:55,780 INFO L78 Accepts]: Start accepts. Automaton has 64291 states and 94135 transitions. Word has length 234 [2018-09-10 12:53:55,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:53:55,780 INFO L480 AbstractCegarLoop]: Abstraction has 64291 states and 94135 transitions. [2018-09-10 12:53:55,780 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:53:55,781 INFO L276 IsEmpty]: Start isEmpty. Operand 64291 states and 94135 transitions. [2018-09-10 12:53:55,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 568 [2018-09-10 12:53:55,794 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:53:55,794 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, 2, 2, 2, 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] [2018-09-10 12:53:55,795 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]=== [2018-09-10 12:53:55,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1849220924, now seen corresponding path program 1 times [2018-09-10 12:53:55,795 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:53:55,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:53:55,796 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:53:55,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:53:55,797 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:53:55,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:53:56,511 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-10 12:53:56,512 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:53:56,512 INFO L197 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 [2018-09-10 12:53:56,521 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:53:56,522 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:53:56,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:53:56,744 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:53:57,104 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:53:57,105 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:53:58,047 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:53:58,068 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 12:53:58,068 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2018-09-10 12:53:58,068 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:53:58,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:53:58,070 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:53:58,070 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-10 12:53:58,071 INFO L87 Difference]: Start difference. First operand 64291 states and 94135 transitions. Second operand 3 states. [2018-09-10 12:54:15,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:54:15,190 INFO L93 Difference]: Finished difference Result 158883 states and 239917 transitions. [2018-09-10 12:54:15,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:54:15,191 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 567 [2018-09-10 12:54:15,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:54:15,545 INFO L225 Difference]: With dead ends: 158883 [2018-09-10 12:54:15,545 INFO L226 Difference]: Without dead ends: 94598 [2018-09-10 12:54:15,793 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1142 GetRequests, 1134 SyntacticMatches, 5 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-10 12:54:15,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94598 states. [2018-09-10 12:54:18,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94598 to 94554. [2018-09-10 12:54:18,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94554 states. [2018-09-10 12:54:18,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94554 states to 94554 states and 125716 transitions. [2018-09-10 12:54:18,400 INFO L78 Accepts]: Start accepts. Automaton has 94554 states and 125716 transitions. Word has length 567 [2018-09-10 12:54:18,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:54:18,402 INFO L480 AbstractCegarLoop]: Abstraction has 94554 states and 125716 transitions. [2018-09-10 12:54:18,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:54:18,402 INFO L276 IsEmpty]: Start isEmpty. Operand 94554 states and 125716 transitions. [2018-09-10 12:54:18,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 745 [2018-09-10 12:54:18,431 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:54:18,437 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, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:54:18,437 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]=== [2018-09-10 12:54:18,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1883991190, now seen corresponding path program 1 times [2018-09-10 12:54:18,440 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:54:18,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:54:18,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:54:18,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:54:18,441 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:54:18,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:54:19,292 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 205 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:54:19,292 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:54:19,292 INFO L197 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 [2018-09-10 12:54:19,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:54:19,302 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:54:19,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:54:19,547 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:54:20,601 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 205 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:54:20,602 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:54:21,018 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 205 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:54:21,039 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:54:21,039 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:54:21,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:54:21,057 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:54:21,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:54:21,613 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:54:22,082 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 205 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:54:22,083 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:54:23,577 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 205 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:54:23,579 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:54:23,580 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-10 12:54:23,580 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:54:23,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 12:54:23,582 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 12:54:23,582 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-10 12:54:23,583 INFO L87 Difference]: Start difference. First operand 94554 states and 125716 transitions. Second operand 9 states. Received shutdown request... [2018-09-10 12:54:53,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-10 12:54:53,505 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 12:54:53,511 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 12:54:53,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 12:54:53 BoogieIcfgContainer [2018-09-10 12:54:53,511 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 12:54:53,512 INFO L168 Benchmark]: Toolchain (without parser) took 236683.93 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.1 GB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 128.9 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-09-10 12:54:53,513 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-09-10 12:54:53,514 INFO L168 Benchmark]: CACSL2BoogieTranslator took 4061.74 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 213.9 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -134.6 MB). Peak memory consumption was 488.6 MB. Max. memory is 7.1 GB. [2018-09-10 12:54:53,514 INFO L168 Benchmark]: Boogie Procedure Inliner took 294.27 ms. Allocated memory is still 1.7 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 49.4 MB). Peak memory consumption was 49.4 MB. Max. memory is 7.1 GB. [2018-09-10 12:54:53,515 INFO L168 Benchmark]: Boogie Preprocessor took 1697.17 ms. Allocated memory was 1.7 GB in the beginning and 2.6 GB in the end (delta: 813.7 MB). Free memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: -806.7 MB). Peak memory consumption was 127.4 MB. Max. memory is 7.1 GB. [2018-09-10 12:54:53,516 INFO L168 Benchmark]: RCFGBuilder took 20377.99 ms. Allocated memory was 2.6 GB in the beginning and 2.9 GB in the end (delta: 301.5 MB). Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 215.6 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-09-10 12:54:53,517 INFO L168 Benchmark]: TraceAbstraction took 210244.90 ms. Allocated memory was 2.9 GB in the beginning and 3.7 GB in the end (delta: 809.0 MB). Free memory was 2.1 GB in the beginning and 1.3 GB in the end (delta: 805.1 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-09-10 12:54:53,522 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 4061.74 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 213.9 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -134.6 MB). Peak memory consumption was 488.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 294.27 ms. Allocated memory is still 1.7 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 49.4 MB). Peak memory consumption was 49.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1697.17 ms. Allocated memory was 1.7 GB in the beginning and 2.6 GB in the end (delta: 813.7 MB). Free memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: -806.7 MB). Peak memory consumption was 127.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 20377.99 ms. Allocated memory was 2.6 GB in the beginning and 2.9 GB in the end (delta: 301.5 MB). Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 215.6 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * TraceAbstraction took 210244.90 ms. Allocated memory was 2.9 GB in the beginning and 3.7 GB in the end (delta: 809.0 MB). Free memory was 2.1 GB in the beginning and 1.3 GB in the end (delta: 805.1 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 208]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 208). Cancelled while BasicCegarLoop was constructing difference of abstraction (94554states) and FLOYD_HOARE automaton (currently 20 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (147486 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 210.1s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 194.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4760 SDtfs, 47698 SDslu, 5513 SDs, 0 SdLazy, 72192 SolverSat, 16536 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 171.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4188 GetRequests, 4122 SyntacticMatches, 13 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94554occurred in iteration=6, 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: 5.2s AutomataMinimizationTime, 6 MinimizatonAttempts, 1357 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 7.4s InterpolantComputationTime, 4122 NumberOfCodeBlocks, 4122 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 6164 ConstructedInterpolants, 0 QuantifiedInterpolants, 6485622 SizeOfPredicates, 2 NumberOfNonLiveVariables, 2751 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 1413/1483 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_label54_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_12-54-53-537.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem19_label54_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_12-54-53-537.csv Completed graceful shutdown