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/Problem12_label32_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 11:46:31,591 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 11:46:31,593 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 11:46:31,605 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 11:46:31,605 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 11:46:31,606 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 11:46:31,607 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 11:46:31,609 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 11:46:31,611 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 11:46:31,612 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 11:46:31,613 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 11:46:31,613 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 11:46:31,614 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 11:46:31,615 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 11:46:31,616 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 11:46:31,617 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 11:46:31,618 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 11:46:31,620 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 11:46:31,622 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 11:46:31,623 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 11:46:31,625 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 11:46:31,626 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 11:46:31,629 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 11:46:31,629 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 11:46:31,629 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 11:46:31,630 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 11:46:31,631 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 11:46:31,632 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 11:46:31,633 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 11:46:31,634 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 11:46:31,638 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 11:46:31,639 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 11:46:31,639 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 11:46:31,639 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 11:46:31,640 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 11:46:31,645 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 11:46:31,645 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 11:46:31,678 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 11:46:31,679 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 11:46:31,680 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 11:46:31,681 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 11:46:31,681 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 11:46:31,681 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 11:46:31,681 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 11:46:31,681 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 11:46:31,682 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 11:46:31,682 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 11:46:31,682 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 11:46:31,683 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 11:46:31,683 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 11:46:31,684 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 11:46:31,684 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 11:46:31,684 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 11:46:31,684 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 11:46:31,684 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 11:46:31,684 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 11:46:31,685 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 11:46:31,685 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 11:46:31,685 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 11:46:31,685 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 11:46:31,687 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 11:46:31,688 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 11:46:31,688 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 11:46:31,688 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 11:46:31,688 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 11:46:31,688 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 11:46:31,688 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 11:46:31,689 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 11:46:31,689 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 11:46:31,689 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 11:46:31,743 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 11:46:31,757 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 11:46:31,763 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 11:46:31,765 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 11:46:31,765 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 11:46:31,766 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label32_true-unreach-call.c [2018-09-10 11:46:32,100 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c57a910bc/d8d6ddbcb8b449539a985bab449de39f/FLAG9dc5e2a79 [2018-09-10 11:46:32,571 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 11:46:32,571 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label32_true-unreach-call.c [2018-09-10 11:46:32,610 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c57a910bc/d8d6ddbcb8b449539a985bab449de39f/FLAG9dc5e2a79 [2018-09-10 11:46:32,630 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c57a910bc/d8d6ddbcb8b449539a985bab449de39f [2018-09-10 11:46:32,643 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 11:46:32,649 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 11:46:32,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 11:46:32,651 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 11:46:32,661 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 11:46:32,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:46:32" (1/1) ... [2018-09-10 11:46:32,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@674bafe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:46:32, skipping insertion in model container [2018-09-10 11:46:32,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:46:32" (1/1) ... [2018-09-10 11:46:33,010 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 11:46:33,991 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:46:34,010 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 11:46:34,731 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:46:34,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:46:34 WrapperNode [2018-09-10 11:46:34,991 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 11:46:34,992 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 11:46:34,992 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 11:46:34,993 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 11:46:35,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:46:34" (1/1) ... [2018-09-10 11:46:35,090 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:46:34" (1/1) ... [2018-09-10 11:46:35,252 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 11:46:35,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 11:46:35,253 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 11:46:35,253 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 11:46:35,843 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:46:34" (1/1) ... [2018-09-10 11:46:35,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:46:34" (1/1) ... [2018-09-10 11:46:35,878 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:46:34" (1/1) ... [2018-09-10 11:46:35,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:46:34" (1/1) ... [2018-09-10 11:46:35,984 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:46:34" (1/1) ... [2018-09-10 11:46:36,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:46:34" (1/1) ... [2018-09-10 11:46:36,066 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:46:34" (1/1) ... [2018-09-10 11:46:36,142 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 11:46:36,143 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 11:46:36,143 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 11:46:36,143 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 11:46:36,144 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:46:34" (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 11:46:36,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 11:46:36,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 11:46:36,228 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 11:46:36,228 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 11:46:36,228 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 11:46:36,229 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 11:46:36,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 11:46:36,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 11:46:36,229 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 11:46:36,229 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 11:46:36,230 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 11:46:36,230 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 11:46:36,230 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 11:46:36,230 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 11:46:46,417 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 11:46:46,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:46:46 BoogieIcfgContainer [2018-09-10 11:46:46,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 11:46:46,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 11:46:46,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 11:46:46,423 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 11:46:46,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 11:46:32" (1/3) ... [2018-09-10 11:46:46,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e804667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:46:46, skipping insertion in model container [2018-09-10 11:46:46,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:46:34" (2/3) ... [2018-09-10 11:46:46,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e804667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:46:46, skipping insertion in model container [2018-09-10 11:46:46,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:46:46" (3/3) ... [2018-09-10 11:46:46,427 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label32_true-unreach-call.c [2018-09-10 11:46:46,437 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 11:46:46,448 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 11:46:46,513 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 11:46:46,514 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 11:46:46,514 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 11:46:46,514 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 11:46:46,514 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 11:46:46,515 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 11:46:46,515 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 11:46:46,515 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 11:46:46,515 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 11:46:46,557 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-09-10 11:46:46,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-09-10 11:46:46,566 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:46:46,567 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] [2018-09-10 11:46:46,568 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 11:46:46,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1141627988, now seen corresponding path program 1 times [2018-09-10 11:46:46,577 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:46:46,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:46:46,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:46:46,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:46:46,638 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:46:46,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:46:46,994 WARN L175 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 11:46:47,039 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 11:46:47,041 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:46:47,042 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 11:46:47,042 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:46:47,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:46:47,063 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:46:47,064 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:46:47,067 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-09-10 11:46:56,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:46:56,380 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-09-10 11:46:56,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:46:56,387 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2018-09-10 11:46:56,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:46:56,422 INFO L225 Difference]: With dead ends: 2446 [2018-09-10 11:46:56,422 INFO L226 Difference]: Without dead ends: 1604 [2018-09-10 11:46:56,436 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 11:46:56,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-09-10 11:46:56,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-09-10 11:46:56,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-09-10 11:46:56,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2969 transitions. [2018-09-10 11:46:56,655 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2969 transitions. Word has length 50 [2018-09-10 11:46:56,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:46:56,656 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2969 transitions. [2018-09-10 11:46:56,656 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:46:56,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2969 transitions. [2018-09-10 11:46:56,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-09-10 11:46:56,664 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:46:56,664 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:46:56,665 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 11:46:56,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1853791226, now seen corresponding path program 1 times [2018-09-10 11:46:56,666 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:46:56,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:46:56,667 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:46:56,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:46:56,668 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:46:56,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:46:57,346 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:46:57,346 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:46:57,347 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:46:57,347 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:46:57,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:46:57,351 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:46:57,352 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:46:57,352 INFO L87 Difference]: Start difference. First operand 1604 states and 2969 transitions. Second operand 6 states. [2018-09-10 11:47:15,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:47:15,094 INFO L93 Difference]: Finished difference Result 6329 states and 11914 transitions. [2018-09-10 11:47:15,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:47:15,101 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2018-09-10 11:47:15,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:47:15,130 INFO L225 Difference]: With dead ends: 6329 [2018-09-10 11:47:15,130 INFO L226 Difference]: Without dead ends: 4731 [2018-09-10 11:47:15,140 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:47:15,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4731 states. [2018-09-10 11:47:15,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4731 to 4702. [2018-09-10 11:47:15,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4702 states. [2018-09-10 11:47:15,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4702 states to 4702 states and 7573 transitions. [2018-09-10 11:47:15,272 INFO L78 Accepts]: Start accepts. Automaton has 4702 states and 7573 transitions. Word has length 124 [2018-09-10 11:47:15,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:47:15,273 INFO L480 AbstractCegarLoop]: Abstraction has 4702 states and 7573 transitions. [2018-09-10 11:47:15,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:47:15,273 INFO L276 IsEmpty]: Start isEmpty. Operand 4702 states and 7573 transitions. [2018-09-10 11:47:15,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-09-10 11:47:15,278 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:47:15,278 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 11:47:15,278 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 11:47:15,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1766892630, now seen corresponding path program 1 times [2018-09-10 11:47:15,279 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:47:15,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:47:15,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:47:15,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:47:15,280 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:47:15,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:47:15,702 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-10 11:47:15,703 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:47:15,703 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 11:47:15,723 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:47:15,724 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:47:15,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:47:15,840 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:47:16,009 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-10 11:47:16,009 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:47:16,788 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-10 11:47:16,811 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:47:16,811 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 7 [2018-09-10 11:47:16,811 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:47:16,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 11:47:16,812 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 11:47:16,812 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-09-10 11:47:16,813 INFO L87 Difference]: Start difference. First operand 4702 states and 7573 transitions. Second operand 4 states. [2018-09-10 11:47:25,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:47:25,009 INFO L93 Difference]: Finished difference Result 14024 states and 22978 transitions. [2018-09-10 11:47:25,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 11:47:25,010 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 126 [2018-09-10 11:47:25,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:47:25,060 INFO L225 Difference]: With dead ends: 14024 [2018-09-10 11:47:25,061 INFO L226 Difference]: Without dead ends: 9328 [2018-09-10 11:47:25,081 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 251 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-09-10 11:47:25,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9328 states. [2018-09-10 11:47:25,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9328 to 9328. [2018-09-10 11:47:25,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9328 states. [2018-09-10 11:47:25,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9328 states to 9328 states and 14833 transitions. [2018-09-10 11:47:25,318 INFO L78 Accepts]: Start accepts. Automaton has 9328 states and 14833 transitions. Word has length 126 [2018-09-10 11:47:25,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:47:25,319 INFO L480 AbstractCegarLoop]: Abstraction has 9328 states and 14833 transitions. [2018-09-10 11:47:25,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 11:47:25,319 INFO L276 IsEmpty]: Start isEmpty. Operand 9328 states and 14833 transitions. [2018-09-10 11:47:25,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-09-10 11:47:25,324 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:47:25,324 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:47:25,325 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 11:47:25,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1302178418, now seen corresponding path program 1 times [2018-09-10 11:47:25,325 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:47:25,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:47:25,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:47:25,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:47:25,327 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:47:25,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:47:25,797 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:47:25,798 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:47:25,798 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:47:25,798 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:47:25,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:47:25,799 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:47:25,799 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:47:25,799 INFO L87 Difference]: Start difference. First operand 9328 states and 14833 transitions. Second operand 6 states. [2018-09-10 11:47:53,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:47:53,978 INFO L93 Difference]: Finished difference Result 29980 states and 50376 transitions. [2018-09-10 11:47:53,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-10 11:47:53,979 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2018-09-10 11:47:53,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:47:54,105 INFO L225 Difference]: With dead ends: 29980 [2018-09-10 11:47:54,106 INFO L226 Difference]: Without dead ends: 20658 [2018-09-10 11:47:54,171 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-10 11:47:54,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20658 states. [2018-09-10 11:47:54,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20658 to 20505. [2018-09-10 11:47:54,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20505 states. [2018-09-10 11:47:54,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20505 states to 20505 states and 30427 transitions. [2018-09-10 11:47:54,763 INFO L78 Accepts]: Start accepts. Automaton has 20505 states and 30427 transitions. Word has length 160 [2018-09-10 11:47:54,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:47:54,764 INFO L480 AbstractCegarLoop]: Abstraction has 20505 states and 30427 transitions. [2018-09-10 11:47:54,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:47:54,764 INFO L276 IsEmpty]: Start isEmpty. Operand 20505 states and 30427 transitions. [2018-09-10 11:47:54,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-09-10 11:47:54,776 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:47:54,776 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:47:54,777 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 11:47:54,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1792529356, now seen corresponding path program 1 times [2018-09-10 11:47:54,777 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:47:54,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:47:54,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:47:54,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:47:54,778 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:47:54,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:47:55,154 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 86 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:47:55,155 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:47:55,155 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 11:47:55,169 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:47:55,170 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:47:55,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:47:55,282 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:47:55,969 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-09-10 11:47:55,969 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:47:56,879 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 86 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:47:56,909 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:47:56,910 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2018-09-10 11:47:56,910 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:47:56,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:47:56,911 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:47:56,911 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2018-09-10 11:47:56,911 INFO L87 Difference]: Start difference. First operand 20505 states and 30427 transitions. Second operand 5 states. [2018-09-10 11:48:05,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:48:05,358 INFO L93 Difference]: Finished difference Result 47782 states and 76350 transitions. [2018-09-10 11:48:05,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 11:48:05,361 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2018-09-10 11:48:05,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:48:05,471 INFO L225 Difference]: With dead ends: 47782 [2018-09-10 11:48:05,471 INFO L226 Difference]: Without dead ends: 27283 [2018-09-10 11:48:05,523 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 403 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-09-10 11:48:05,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27283 states. [2018-09-10 11:48:06,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27283 to 27145. [2018-09-10 11:48:06,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27145 states. [2018-09-10 11:48:06,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27145 states to 27145 states and 36122 transitions. [2018-09-10 11:48:06,491 INFO L78 Accepts]: Start accepts. Automaton has 27145 states and 36122 transitions. Word has length 204 [2018-09-10 11:48:06,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:48:06,492 INFO L480 AbstractCegarLoop]: Abstraction has 27145 states and 36122 transitions. [2018-09-10 11:48:06,492 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:48:06,492 INFO L276 IsEmpty]: Start isEmpty. Operand 27145 states and 36122 transitions. [2018-09-10 11:48:06,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-09-10 11:48:06,509 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:48:06,509 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:48:06,509 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 11:48:06,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1972424309, now seen corresponding path program 1 times [2018-09-10 11:48:06,510 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:48:06,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:48:06,511 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:48:06,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:48:06,512 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:48:06,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:48:06,701 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 86 proven. 81 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:48:06,701 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:48:06,701 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 11:48:06,710 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:48:06,710 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:48:06,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:48:06,810 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:48:07,012 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-09-10 11:48:07,013 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:48:07,296 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 86 proven. 81 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:48:07,329 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:48:07,330 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2018-09-10 11:48:07,330 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:48:07,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:48:07,334 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:48:07,334 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-10 11:48:07,335 INFO L87 Difference]: Start difference. First operand 27145 states and 36122 transitions. Second operand 5 states. [2018-09-10 11:48:16,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:48:16,802 INFO L93 Difference]: Finished difference Result 81616 states and 114335 transitions. [2018-09-10 11:48:16,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 11:48:16,803 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 231 [2018-09-10 11:48:16,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:48:16,954 INFO L225 Difference]: With dead ends: 81616 [2018-09-10 11:48:16,955 INFO L226 Difference]: Without dead ends: 54477 [2018-09-10 11:48:17,011 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 459 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-09-10 11:48:17,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54477 states. [2018-09-10 11:48:17,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54477 to 54186. [2018-09-10 11:48:17,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54186 states. [2018-09-10 11:48:18,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54186 states to 54186 states and 69080 transitions. [2018-09-10 11:48:18,040 INFO L78 Accepts]: Start accepts. Automaton has 54186 states and 69080 transitions. Word has length 231 [2018-09-10 11:48:18,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:48:18,041 INFO L480 AbstractCegarLoop]: Abstraction has 54186 states and 69080 transitions. [2018-09-10 11:48:18,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:48:18,041 INFO L276 IsEmpty]: Start isEmpty. Operand 54186 states and 69080 transitions. [2018-09-10 11:48:18,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-09-10 11:48:18,052 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:48:18,053 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, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:48:18,053 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 11:48:18,053 INFO L82 PathProgramCache]: Analyzing trace with hash -148821389, now seen corresponding path program 1 times [2018-09-10 11:48:18,054 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:48:18,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:48:18,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:48:18,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:48:18,055 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:48:18,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:48:18,322 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-10 11:48:18,322 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:48:18,322 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 11:48:18,323 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:48:18,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 11:48:18,324 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 11:48:18,324 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:48:18,324 INFO L87 Difference]: Start difference. First operand 54186 states and 69080 transitions. Second operand 4 states. [2018-09-10 11:48:28,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:48:28,823 INFO L93 Difference]: Finished difference Result 211616 states and 289344 transitions. [2018-09-10 11:48:28,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 11:48:28,823 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 273 [2018-09-10 11:48:28,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:48:29,515 INFO L225 Difference]: With dead ends: 211616 [2018-09-10 11:48:29,515 INFO L226 Difference]: Without dead ends: 157436 [2018-09-10 11:48:29,717 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 11:48:29,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157436 states. [2018-09-10 11:48:33,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157436 to 157421. [2018-09-10 11:48:33,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157421 states. [2018-09-10 11:48:33,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157421 states to 157421 states and 205586 transitions. [2018-09-10 11:48:33,479 INFO L78 Accepts]: Start accepts. Automaton has 157421 states and 205586 transitions. Word has length 273 [2018-09-10 11:48:33,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:48:33,480 INFO L480 AbstractCegarLoop]: Abstraction has 157421 states and 205586 transitions. [2018-09-10 11:48:33,480 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 11:48:33,480 INFO L276 IsEmpty]: Start isEmpty. Operand 157421 states and 205586 transitions. [2018-09-10 11:48:33,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-09-10 11:48:33,542 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:48:33,543 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:48:33,543 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 11:48:33,544 INFO L82 PathProgramCache]: Analyzing trace with hash 631298842, now seen corresponding path program 1 times [2018-09-10 11:48:33,544 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:48:33,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:48:33,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:48:33,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:48:33,545 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:48:33,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:48:34,029 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 299 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-10 11:48:34,030 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:48:34,030 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:48:34,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:48:34,038 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:48:34,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:48:34,172 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:48:34,606 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 299 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-10 11:48:34,606 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:48:34,817 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 299 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-10 11:48:34,838 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:48:34,839 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 6 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 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:48:34,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:48:34,855 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:48:35,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:48:35,142 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:48:36,203 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 299 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-10 11:48:36,203 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:48:36,522 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 299 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-10 11:48:36,524 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:48:36,524 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-10 11:48:36,524 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:48:36,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 11:48:36,526 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 11:48:36,526 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-10 11:48:36,527 INFO L87 Difference]: Start difference. First operand 157421 states and 205586 transitions. Second operand 9 states. [2018-09-10 11:48:58,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:48:58,024 INFO L93 Difference]: Finished difference Result 411978 states and 607738 transitions. [2018-09-10 11:48:58,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-10 11:48:58,025 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 368 [2018-09-10 11:48:58,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:48:58,869 INFO L225 Difference]: With dead ends: 411978 [2018-09-10 11:48:58,869 INFO L226 Difference]: Without dead ends: 231333 [2018-09-10 11:48:59,468 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1490 GetRequests, 1468 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2018-09-10 11:48:59,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231333 states. [2018-09-10 11:49:04,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231333 to 226708. [2018-09-10 11:49:04,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226708 states. [2018-09-10 11:49:04,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226708 states to 226708 states and 299544 transitions. [2018-09-10 11:49:04,965 INFO L78 Accepts]: Start accepts. Automaton has 226708 states and 299544 transitions. Word has length 368 [2018-09-10 11:49:04,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:49:04,966 INFO L480 AbstractCegarLoop]: Abstraction has 226708 states and 299544 transitions. [2018-09-10 11:49:04,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 11:49:04,966 INFO L276 IsEmpty]: Start isEmpty. Operand 226708 states and 299544 transitions. [2018-09-10 11:49:06,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2018-09-10 11:49:06,464 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:49:06,465 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 11:49:06,465 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:49:06,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1769110923, now seen corresponding path program 1 times [2018-09-10 11:49:06,466 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:49:06,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:49:06,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:49:06,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:49:06,467 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:49:06,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:49:06,902 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 281 proven. 109 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2018-09-10 11:49:06,903 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:49:06,903 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:49:06,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:49:06,911 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:49:07,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:49:07,093 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:49:07,290 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 452 proven. 2 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-09-10 11:49:07,291 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:49:07,605 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 281 proven. 109 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2018-09-10 11:49:07,625 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:49:07,626 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 8 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 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:49:07,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:49:07,645 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:49:08,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:49:08,040 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:49:08,158 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 452 proven. 2 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-09-10 11:49:08,159 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:49:13,933 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 281 proven. 109 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2018-09-10 11:49:13,935 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:49:13,936 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-10 11:49:13,936 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:49:13,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 11:49:13,937 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 11:49:13,938 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-10 11:49:13,938 INFO L87 Difference]: Start difference. First operand 226708 states and 299544 transitions. Second operand 9 states. [2018-09-10 11:49:39,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:49:39,577 INFO L93 Difference]: Finished difference Result 565069 states and 804761 transitions. [2018-09-10 11:49:39,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-10 11:49:39,577 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 477 [2018-09-10 11:49:39,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:49:41,003 INFO L225 Difference]: With dead ends: 565069 [2018-09-10 11:49:41,003 INFO L226 Difference]: Without dead ends: 339135 [2018-09-10 11:49:41,583 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1936 GetRequests, 1910 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=160, Invalid=346, Unknown=0, NotChecked=0, Total=506 [2018-09-10 11:49:41,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339135 states. [2018-09-10 11:49:47,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339135 to 328997. [2018-09-10 11:49:47,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328997 states. [2018-09-10 11:49:49,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328997 states to 328997 states and 422604 transitions. [2018-09-10 11:49:49,620 INFO L78 Accepts]: Start accepts. Automaton has 328997 states and 422604 transitions. Word has length 477 [2018-09-10 11:49:49,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:49:49,621 INFO L480 AbstractCegarLoop]: Abstraction has 328997 states and 422604 transitions. [2018-09-10 11:49:49,621 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 11:49:49,621 INFO L276 IsEmpty]: Start isEmpty. Operand 328997 states and 422604 transitions. [2018-09-10 11:49:49,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2018-09-10 11:49:49,720 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:49:49,720 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-09-10 11:49:49,720 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 11:49:49,721 INFO L82 PathProgramCache]: Analyzing trace with hash -223246917, now seen corresponding path program 1 times [2018-09-10 11:49:49,721 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:49:49,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:49:49,722 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:49:49,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:49:49,722 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:49:49,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:49:50,269 INFO L134 CoverageAnalysis]: Checked inductivity of 777 backedges. 388 proven. 109 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2018-09-10 11:49:50,270 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:49:50,270 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 11:49:50,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:49:50,288 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:49:50,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:49:50,470 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:49:50,631 INFO L134 CoverageAnalysis]: Checked inductivity of 777 backedges. 644 proven. 2 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2018-09-10 11:49:50,631 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:49:51,898 INFO L134 CoverageAnalysis]: Checked inductivity of 777 backedges. 388 proven. 109 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2018-09-10 11:49:51,920 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:49:51,920 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 10 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 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:49:51,935 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:49:51,935 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:49:52,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:49:52,343 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:49:52,516 INFO L134 CoverageAnalysis]: Checked inductivity of 777 backedges. 644 proven. 2 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2018-09-10 11:49:52,516 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:49:52,753 INFO L134 CoverageAnalysis]: Checked inductivity of 777 backedges. 388 proven. 109 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2018-09-10 11:49:52,755 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:49:52,756 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 12 [2018-09-10 11:49:52,756 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:49:52,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:49:52,757 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:49:52,757 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2018-09-10 11:49:52,757 INFO L87 Difference]: Start difference. First operand 328997 states and 422604 transitions. Second operand 6 states. [2018-09-10 11:50:15,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:50:15,931 INFO L93 Difference]: Finished difference Result 736877 states and 979305 transitions. [2018-09-10 11:50:15,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-10 11:50:15,931 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 515 [2018-09-10 11:50:15,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:50:17,441 INFO L225 Difference]: With dead ends: 736877 [2018-09-10 11:50:17,441 INFO L226 Difference]: Without dead ends: 408654 [2018-09-10 11:50:18,170 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2073 GetRequests, 2055 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2018-09-10 11:50:18,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408654 states. Received shutdown request... [2018-09-10 11:50:27,717 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 11:50:27,724 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 11:50:27,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 11:50:27 BoogieIcfgContainer [2018-09-10 11:50:27,724 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 11:50:27,725 INFO L168 Benchmark]: Toolchain (without parser) took 235081.07 ms. Allocated memory was 1.5 GB in the beginning and 6.0 GB in the end (delta: 4.5 GB). Free memory was 1.4 GB in the beginning and 4.5 GB in the end (delta: -3.1 GB). Peak memory consumption was 4.4 GB. Max. memory is 7.1 GB. [2018-09-10 11:50:27,726 INFO L168 Benchmark]: CDTParser took 0.17 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 11:50:27,727 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2340.60 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-09-10 11:50:27,728 INFO L168 Benchmark]: Boogie Procedure Inliner took 260.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-09-10 11:50:27,728 INFO L168 Benchmark]: Boogie Preprocessor took 890.06 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 917.5 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. [2018-09-10 11:50:27,729 INFO L168 Benchmark]: RCFGBuilder took 10274.99 ms. Allocated memory was 2.5 GB in the beginning and 2.6 GB in the end (delta: 166.7 MB). Free memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: -147.7 MB). Peak memory consumption was 737.4 MB. Max. memory is 7.1 GB. [2018-09-10 11:50:27,730 INFO L168 Benchmark]: TraceAbstraction took 221305.38 ms. Allocated memory was 2.6 GB in the beginning and 6.0 GB in the end (delta: 3.4 GB). Free memory was 2.5 GB in the beginning and 4.5 GB in the end (delta: -2.0 GB). Peak memory consumption was 4.4 GB. Max. memory is 7.1 GB. [2018-09-10 11:50:27,735 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 2340.60 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 260.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 890.06 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 917.5 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10274.99 ms. Allocated memory was 2.5 GB in the beginning and 2.6 GB in the end (delta: 166.7 MB). Free memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: -147.7 MB). Peak memory consumption was 737.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 221305.38 ms. Allocated memory was 2.6 GB in the beginning and 6.0 GB in the end (delta: 3.4 GB). Free memory was 2.5 GB in the beginning and 4.5 GB in the end (delta: -2.0 GB). Peak memory consumption was 4.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 141]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 141). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 221.2s OverallTime, 10 OverallIterations, 5 TraceHistogramMax, 169.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1695 SDtfs, 29312 SDslu, 2038 SDs, 0 SdLazy, 68215 SolverSat, 15786 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 122.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6672 GetRequests, 6557 SyntacticMatches, 22 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 5.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=328997occurred in iteration=9, 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: 29.9s AutomataMinimizationTime, 10 MinimizatonAttempts, 15389 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 16.6s InterpolantComputationTime, 5809 NumberOfCodeBlocks, 5809 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 9062 ConstructedInterpolants, 0 QuantifiedInterpolants, 8158749 SizeOfPredicates, 8 NumberOfNonLiveVariables, 5490 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 28 InterpolantComputations, 7 PerfectInterpolantSequences, 8556/9606 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/Problem12_label32_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_11-50-27-752.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label32_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_11-50-27-752.csv Completed graceful shutdown