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/Problem13_label55_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 11:58:53,524 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 11:58:53,527 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 11:58:53,544 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 11:58:53,544 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 11:58:53,545 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 11:58:53,547 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 11:58:53,549 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 11:58:53,551 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 11:58:53,552 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 11:58:53,553 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 11:58:53,553 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 11:58:53,554 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 11:58:53,555 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 11:58:53,556 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 11:58:53,557 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 11:58:53,558 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 11:58:53,560 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 11:58:53,562 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 11:58:53,564 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 11:58:53,565 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 11:58:53,566 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 11:58:53,569 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 11:58:53,569 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 11:58:53,570 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 11:58:53,570 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 11:58:53,572 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 11:58:53,572 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 11:58:53,573 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 11:58:53,574 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 11:58:53,575 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 11:58:53,575 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 11:58:53,576 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 11:58:53,576 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 11:58:53,577 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 11:58:53,578 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 11:58:53,578 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 11:58:53,601 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 11:58:53,603 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 11:58:53,604 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 11:58:53,604 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 11:58:53,604 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 11:58:53,605 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 11:58:53,605 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 11:58:53,605 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 11:58:53,605 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 11:58:53,608 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 11:58:53,608 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 11:58:53,609 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 11:58:53,609 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 11:58:53,609 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 11:58:53,609 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 11:58:53,610 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 11:58:53,610 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 11:58:53,610 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 11:58:53,610 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 11:58:53,611 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 11:58:53,611 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 11:58:53,611 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 11:58:53,612 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 11:58:53,612 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 11:58:53,612 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 11:58:53,612 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 11:58:53,613 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 11:58:53,613 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 11:58:53,613 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 11:58:53,613 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 11:58:53,614 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 11:58:53,614 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 11:58:53,614 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 11:58:53,680 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 11:58:53,693 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 11:58:53,697 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 11:58:53,699 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 11:58:53,699 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 11:58:53,700 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label55_true-unreach-call.c [2018-09-10 11:58:54,048 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ce341ceb/0f8620b5ec8744edb5f876185658f2aa/FLAG0114a9043 [2018-09-10 11:58:54,566 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 11:58:54,567 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label55_true-unreach-call.c [2018-09-10 11:58:54,616 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ce341ceb/0f8620b5ec8744edb5f876185658f2aa/FLAG0114a9043 [2018-09-10 11:58:54,639 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ce341ceb/0f8620b5ec8744edb5f876185658f2aa [2018-09-10 11:58:54,653 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 11:58:54,657 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 11:58:54,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 11:58:54,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 11:58:54,667 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 11:58:54,668 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:58:54" (1/1) ... [2018-09-10 11:58:54,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ec3b694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:54, skipping insertion in model container [2018-09-10 11:58:54,671 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:58:54" (1/1) ... [2018-09-10 11:58:55,043 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 11:58:56,243 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:58:56,268 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 11:58:57,071 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:58:57,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:57 WrapperNode [2018-09-10 11:58:57,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 11:58:57,455 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 11:58:57,455 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 11:58:57,455 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 11:58:57,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:57" (1/1) ... [2018-09-10 11:58:57,585 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:57" (1/1) ... [2018-09-10 11:58:57,748 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 11:58:57,749 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 11:58:57,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 11:58:57,749 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 11:58:58,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:57" (1/1) ... [2018-09-10 11:58:58,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:57" (1/1) ... [2018-09-10 11:58:58,648 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:57" (1/1) ... [2018-09-10 11:58:58,648 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:57" (1/1) ... [2018-09-10 11:58:58,835 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:57" (1/1) ... [2018-09-10 11:58:58,884 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:57" (1/1) ... [2018-09-10 11:58:58,948 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:57" (1/1) ... [2018-09-10 11:58:59,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 11:58:59,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 11:58:59,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 11:58:59,014 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 11:58:59,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:57" (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 11:58:59,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 11:58:59,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 11:58:59,088 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 11:58:59,089 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 11:58:59,089 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 11:58:59,089 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 11:58:59,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 11:58:59,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 11:58:59,089 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 11:58:59,090 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 11:58:59,090 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 11:58:59,090 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 11:58:59,090 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 11:58:59,090 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 11:59:12,671 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 11:59:12,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:59:12 BoogieIcfgContainer [2018-09-10 11:59:12,672 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 11:59:12,673 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 11:59:12,673 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 11:59:12,676 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 11:59:12,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 11:58:54" (1/3) ... [2018-09-10 11:59:12,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19cead96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:59:12, skipping insertion in model container [2018-09-10 11:59:12,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:58:57" (2/3) ... [2018-09-10 11:59:12,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19cead96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:59:12, skipping insertion in model container [2018-09-10 11:59:12,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:59:12" (3/3) ... [2018-09-10 11:59:12,679 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label55_true-unreach-call.c [2018-09-10 11:59:12,689 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 11:59:12,699 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 11:59:12,764 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 11:59:12,765 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 11:59:12,765 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 11:59:12,765 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 11:59:12,765 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 11:59:12,765 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 11:59:12,766 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 11:59:12,766 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 11:59:12,766 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 11:59:12,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-09-10 11:59:12,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-09-10 11:59:12,829 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:59:12,832 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] [2018-09-10 11:59:12,833 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 11:59:12,840 INFO L82 PathProgramCache]: Analyzing trace with hash -151965711, now seen corresponding path program 1 times [2018-09-10 11:59:12,843 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:59:12,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:59:12,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:59:12,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:59:12,893 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:59:12,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:59:13,373 WARN L175 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:59:13,539 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 11:59:13,544 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:59:13,545 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 11:59:13,545 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:59:13,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:59:13,574 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:59:13,575 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:59:13,577 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-09-10 11:59:22,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:59:22,689 INFO L93 Difference]: Finished difference Result 3097 states and 5707 transitions. [2018-09-10 11:59:22,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:59:22,694 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2018-09-10 11:59:22,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:59:22,741 INFO L225 Difference]: With dead ends: 3097 [2018-09-10 11:59:22,741 INFO L226 Difference]: Without dead ends: 1975 [2018-09-10 11:59:22,758 INFO L604 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 [2018-09-10 11:59:22,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2018-09-10 11:59:22,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1974. [2018-09-10 11:59:22,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2018-09-10 11:59:22,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3284 transitions. [2018-09-10 11:59:22,926 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3284 transitions. Word has length 55 [2018-09-10 11:59:22,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:59:22,927 INFO L480 AbstractCegarLoop]: Abstraction has 1974 states and 3284 transitions. [2018-09-10 11:59:22,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:59:22,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3284 transitions. [2018-09-10 11:59:22,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-09-10 11:59:22,942 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:59:22,942 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:59:22,943 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 11:59:22,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1277242208, now seen corresponding path program 1 times [2018-09-10 11:59:22,943 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:59:22,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:59:22,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:59:22,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:59:22,945 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:59:22,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:59:23,263 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:59:23,263 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:59:23,263 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 11:59:23,264 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:59:23,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:59:23,266 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:59:23,266 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-10 11:59:23,266 INFO L87 Difference]: Start difference. First operand 1974 states and 3284 transitions. Second operand 5 states. [2018-09-10 11:59:44,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:59:44,230 INFO L93 Difference]: Finished difference Result 5737 states and 9691 transitions. [2018-09-10 11:59:44,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 11:59:44,231 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2018-09-10 11:59:44,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:59:44,256 INFO L225 Difference]: With dead ends: 5737 [2018-09-10 11:59:44,256 INFO L226 Difference]: Without dead ends: 3769 [2018-09-10 11:59:44,263 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 11:59:44,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3769 states. [2018-09-10 11:59:44,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3769 to 3685. [2018-09-10 11:59:44,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3685 states. [2018-09-10 11:59:44,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3685 states to 3685 states and 5659 transitions. [2018-09-10 11:59:44,401 INFO L78 Accepts]: Start accepts. Automaton has 3685 states and 5659 transitions. Word has length 131 [2018-09-10 11:59:44,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:59:44,402 INFO L480 AbstractCegarLoop]: Abstraction has 3685 states and 5659 transitions. [2018-09-10 11:59:44,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:59:44,402 INFO L276 IsEmpty]: Start isEmpty. Operand 3685 states and 5659 transitions. [2018-09-10 11:59:44,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-09-10 11:59:44,415 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:59:44,415 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:59:44,415 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 11:59:44,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1245524548, now seen corresponding path program 1 times [2018-09-10 11:59:44,416 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:59:44,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:59:44,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:59:44,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:59:44,418 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:59:44,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:59:44,603 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:59:44,603 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:59:44,603 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 11:59:44,604 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:59:44,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:59:44,604 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:59:44,605 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-10 11:59:44,605 INFO L87 Difference]: Start difference. First operand 3685 states and 5659 transitions. Second operand 5 states. [2018-09-10 11:59:59,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:59:59,812 INFO L93 Difference]: Finished difference Result 12383 states and 19152 transitions. [2018-09-10 11:59:59,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 11:59:59,813 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2018-09-10 11:59:59,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:59:59,858 INFO L225 Difference]: With dead ends: 12383 [2018-09-10 11:59:59,858 INFO L226 Difference]: Without dead ends: 8704 [2018-09-10 11:59:59,876 INFO L604 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 [2018-09-10 11:59:59,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8704 states. [2018-09-10 12:00:00,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8704 to 8667. [2018-09-10 12:00:00,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8667 states. [2018-09-10 12:00:00,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8667 states to 8667 states and 12395 transitions. [2018-09-10 12:00:00,090 INFO L78 Accepts]: Start accepts. Automaton has 8667 states and 12395 transitions. Word has length 145 [2018-09-10 12:00:00,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:00:00,090 INFO L480 AbstractCegarLoop]: Abstraction has 8667 states and 12395 transitions. [2018-09-10 12:00:00,090 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:00:00,090 INFO L276 IsEmpty]: Start isEmpty. Operand 8667 states and 12395 transitions. [2018-09-10 12:00:00,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-09-10 12:00:00,096 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:00:00,096 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:00:00,096 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 12:00:00,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1767017948, now seen corresponding path program 1 times [2018-09-10 12:00:00,097 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:00:00,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:00:00,098 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:00:00,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:00:00,098 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:00:00,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:00:00,488 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:00:00,488 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:00:00,488 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 12:00:00,488 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:00:00,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:00:00,489 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:00:00,489 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-10 12:00:00,490 INFO L87 Difference]: Start difference. First operand 8667 states and 12395 transitions. Second operand 5 states. [2018-09-10 12:00:29,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:00:29,766 INFO L93 Difference]: Finished difference Result 31347 states and 47350 transitions. [2018-09-10 12:00:29,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 12:00:29,769 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2018-09-10 12:00:29,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:00:29,874 INFO L225 Difference]: With dead ends: 31347 [2018-09-10 12:00:29,874 INFO L226 Difference]: Without dead ends: 22686 [2018-09-10 12:00:29,927 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-10 12:00:29,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22686 states. [2018-09-10 12:00:30,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22686 to 22404. [2018-09-10 12:00:30,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22404 states. [2018-09-10 12:00:30,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22404 states to 22404 states and 31712 transitions. [2018-09-10 12:00:30,440 INFO L78 Accepts]: Start accepts. Automaton has 22404 states and 31712 transitions. Word has length 161 [2018-09-10 12:00:30,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:00:30,441 INFO L480 AbstractCegarLoop]: Abstraction has 22404 states and 31712 transitions. [2018-09-10 12:00:30,441 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:00:30,442 INFO L276 IsEmpty]: Start isEmpty. Operand 22404 states and 31712 transitions. [2018-09-10 12:00:30,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-09-10 12:00:30,446 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:00:30,446 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:00:30,446 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 12:00:30,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1721732576, now seen corresponding path program 1 times [2018-09-10 12:00:30,447 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:00:30,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:00:30,448 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:00:30,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:00:30,448 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:00:30,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:00:30,800 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:00:30,800 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:00:30,801 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 12:00:30,801 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:00:30,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:00:30,801 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:00:30,802 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-10 12:00:30,802 INFO L87 Difference]: Start difference. First operand 22404 states and 31712 transitions. Second operand 5 states. [2018-09-10 12:01:00,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:01:00,514 INFO L93 Difference]: Finished difference Result 62900 states and 92455 transitions. [2018-09-10 12:01:00,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 12:01:00,523 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2018-09-10 12:01:00,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:01:00,681 INFO L225 Difference]: With dead ends: 62900 [2018-09-10 12:01:00,682 INFO L226 Difference]: Without dead ends: 40502 [2018-09-10 12:01:00,747 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-10 12:01:00,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40502 states. [2018-09-10 12:01:01,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40502 to 40347. [2018-09-10 12:01:01,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40347 states. [2018-09-10 12:01:02,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40347 states to 40347 states and 58367 transitions. [2018-09-10 12:01:02,028 INFO L78 Accepts]: Start accepts. Automaton has 40347 states and 58367 transitions. Word has length 163 [2018-09-10 12:01:02,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:01:02,028 INFO L480 AbstractCegarLoop]: Abstraction has 40347 states and 58367 transitions. [2018-09-10 12:01:02,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:01:02,029 INFO L276 IsEmpty]: Start isEmpty. Operand 40347 states and 58367 transitions. [2018-09-10 12:01:02,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-09-10 12:01:02,035 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:01:02,035 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:01:02,036 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 12:01:02,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1805394288, now seen corresponding path program 1 times [2018-09-10 12:01:02,037 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:01:02,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:01:02,039 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:01:02,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:01:02,039 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:01:02,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:01:02,303 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:01:02,304 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:01:02,304 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 12:01:02,304 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:01:02,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 12:01:02,305 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 12:01:02,305 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 12:01:02,306 INFO L87 Difference]: Start difference. First operand 40347 states and 58367 transitions. Second operand 4 states. [2018-09-10 12:01:16,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:01:16,561 INFO L93 Difference]: Finished difference Result 143263 states and 228854 transitions. [2018-09-10 12:01:16,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 12:01:16,567 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2018-09-10 12:01:16,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:01:16,964 INFO L225 Difference]: With dead ends: 143263 [2018-09-10 12:01:16,964 INFO L226 Difference]: Without dead ends: 102922 [2018-09-10 12:01:17,081 INFO L604 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 [2018-09-10 12:01:17,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102922 states. [2018-09-10 12:01:18,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102922 to 102822. [2018-09-10 12:01:18,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102822 states. [2018-09-10 12:01:18,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102822 states to 102822 states and 149508 transitions. [2018-09-10 12:01:18,898 INFO L78 Accepts]: Start accepts. Automaton has 102822 states and 149508 transitions. Word has length 171 [2018-09-10 12:01:18,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:01:18,898 INFO L480 AbstractCegarLoop]: Abstraction has 102822 states and 149508 transitions. [2018-09-10 12:01:18,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 12:01:18,898 INFO L276 IsEmpty]: Start isEmpty. Operand 102822 states and 149508 transitions. [2018-09-10 12:01:18,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2018-09-10 12:01:18,950 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:01:18,950 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-09-10 12:01:18,951 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 12:01:18,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1369764404, now seen corresponding path program 1 times [2018-09-10 12:01:18,951 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:01:18,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:01:18,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:01:18,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:01:18,952 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:01:19,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:01:20,288 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 299 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-10 12:01:20,288 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:01:20,290 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 12:01:20,312 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:01:20,312 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:01:20,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:01:20,503 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:01:20,962 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 299 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-10 12:01:20,963 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:01:21,959 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 299 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-10 12:01:21,998 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:01:21,998 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 3 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 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:01:22,030 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:01:22,031 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:01:22,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:01:22,363 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:01:22,599 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 299 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-10 12:01:22,600 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:01:23,349 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 299 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-10 12:01:23,351 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:01:23,352 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-10 12:01:23,352 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:01:23,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 12:01:23,353 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 12:01:23,354 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-10 12:01:23,354 INFO L87 Difference]: Start difference. First operand 102822 states and 149508 transitions. Second operand 9 states. [2018-09-10 12:01:48,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:01:48,521 INFO L93 Difference]: Finished difference Result 259032 states and 461371 transitions. [2018-09-10 12:01:48,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-10 12:01:48,524 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 343 [2018-09-10 12:01:48,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:01:49,561 INFO L225 Difference]: With dead ends: 259032 [2018-09-10 12:01:49,561 INFO L226 Difference]: Without dead ends: 157020 [2018-09-10 12:01:50,088 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1394 GetRequests, 1371 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2018-09-10 12:01:50,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157020 states. [2018-09-10 12:01:55,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157020 to 156369. [2018-09-10 12:01:55,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156369 states. [2018-09-10 12:01:55,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156369 states to 156369 states and 234602 transitions. [2018-09-10 12:01:55,994 INFO L78 Accepts]: Start accepts. Automaton has 156369 states and 234602 transitions. Word has length 343 [2018-09-10 12:01:55,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:01:55,995 INFO L480 AbstractCegarLoop]: Abstraction has 156369 states and 234602 transitions. [2018-09-10 12:01:55,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 12:01:55,995 INFO L276 IsEmpty]: Start isEmpty. Operand 156369 states and 234602 transitions. [2018-09-10 12:01:56,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2018-09-10 12:01:56,135 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:01:56,135 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:01:56,136 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:01:56,136 INFO L82 PathProgramCache]: Analyzing trace with hash 892867014, now seen corresponding path program 1 times [2018-09-10 12:01:56,136 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:01:56,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:01:56,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:01:56,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:01:56,137 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:01:56,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:01:56,725 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 241 proven. 95 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-09-10 12:01:56,726 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:01:56,726 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:01:56,733 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:01:56,733 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:01:56,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:01:56,878 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:01:58,468 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 377 proven. 2 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2018-09-10 12:01:58,468 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:01:58,807 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 241 proven. 95 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-09-10 12:01:58,842 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:01:58,843 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 5 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 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:01:58,874 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:01:58,874 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:01:59,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:01:59,188 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:01:59,381 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 377 proven. 2 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2018-09-10 12:01:59,381 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:01:59,725 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 241 proven. 95 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-09-10 12:01:59,729 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:01:59,730 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-10 12:01:59,730 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:01:59,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 12:01:59,733 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 12:01:59,733 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-10 12:01:59,734 INFO L87 Difference]: Start difference. First operand 156369 states and 234602 transitions. Second operand 9 states. [2018-09-10 12:02:30,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:02:30,399 INFO L93 Difference]: Finished difference Result 373664 states and 783070 transitions. [2018-09-10 12:02:30,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-09-10 12:02:30,400 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 351 [2018-09-10 12:02:30,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:02:32,223 INFO L225 Difference]: With dead ends: 373664 [2018-09-10 12:02:32,223 INFO L226 Difference]: Without dead ends: 218105 [2018-09-10 12:02:32,894 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1434 GetRequests, 1407 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2018-09-10 12:02:33,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218105 states. Received shutdown request... [2018-09-10 12:02:47,530 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 12:02:47,537 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 12:02:47,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 12:02:47 BoogieIcfgContainer [2018-09-10 12:02:47,537 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 12:02:47,538 INFO L168 Benchmark]: Toolchain (without parser) took 232883.98 ms. Allocated memory was 1.5 GB in the beginning and 4.9 GB in the end (delta: 3.4 GB). Free memory was 1.4 GB in the beginning and 3.7 GB in the end (delta: -2.3 GB). Peak memory consumption was 3.4 GB. Max. memory is 7.1 GB. [2018-09-10 12:02:47,540 INFO L168 Benchmark]: CDTParser took 0.22 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 12:02:47,541 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2796.37 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 338.2 MB). Peak memory consumption was 338.2 MB. Max. memory is 7.1 GB. [2018-09-10 12:02:47,542 INFO L168 Benchmark]: Boogie Procedure Inliner took 294.05 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-09-10 12:02:47,543 INFO L168 Benchmark]: Boogie Preprocessor took 1263.78 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.0 GB). Free memory was 1.0 GB in the beginning and 2.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. [2018-09-10 12:02:47,544 INFO L168 Benchmark]: RCFGBuilder took 13658.74 ms. Allocated memory was 2.6 GB in the beginning and 2.7 GB in the end (delta: 148.4 MB). Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 95.3 MB). Peak memory consumption was 746.5 MB. Max. memory is 7.1 GB. [2018-09-10 12:02:47,545 INFO L168 Benchmark]: TraceAbstraction took 214864.82 ms. Allocated memory was 2.7 GB in the beginning and 4.9 GB in the end (delta: 2.2 GB). Free memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: -1.4 GB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. [2018-09-10 12:02:47,554 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 2796.37 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 338.2 MB). Peak memory consumption was 338.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 294.05 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1263.78 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.0 GB). Free memory was 1.0 GB in the beginning and 2.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13658.74 ms. Allocated memory was 2.6 GB in the beginning and 2.7 GB in the end (delta: 148.4 MB). Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 95.3 MB). Peak memory consumption was 746.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 214864.82 ms. Allocated memory was 2.7 GB in the beginning and 4.9 GB in the end (delta: 2.2 GB). Free memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: -1.4 GB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 156]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 156). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 214.7s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 179.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4227 SDtfs, 30678 SDslu, 5874 SDs, 0 SdLazy, 70318 SolverSat, 13444 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 144.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2874 GetRequests, 2795 SyntacticMatches, 11 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=156369occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 24.6s AutomataMinimizationTime, 8 MinimizatonAttempts, 1310 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 7.6s InterpolantComputationTime, 2908 NumberOfCodeBlocks, 2908 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 4280 ConstructedInterpolants, 0 QuantifiedInterpolants, 2914812 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2454 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 16 InterpolantComputations, 6 PerfectInterpolantSequences, 4021/4320 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/Problem13_label55_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_12-02-47-586.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label55_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_12-02-47-586.csv Completed graceful shutdown