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_label15_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 11:53:40,534 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 11:53:40,538 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 11:53:40,557 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 11:53:40,558 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 11:53:40,560 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 11:53:40,561 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 11:53:40,564 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 11:53:40,566 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 11:53:40,567 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 11:53:40,572 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 11:53:40,573 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 11:53:40,575 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 11:53:40,577 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 11:53:40,580 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 11:53:40,581 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 11:53:40,582 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 11:53:40,585 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 11:53:40,590 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 11:53:40,594 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 11:53:40,595 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 11:53:40,596 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 11:53:40,600 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 11:53:40,600 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 11:53:40,600 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 11:53:40,601 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 11:53:40,602 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 11:53:40,604 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 11:53:40,605 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 11:53:40,606 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 11:53:40,607 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 11:53:40,607 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 11:53:40,608 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 11:53:40,608 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 11:53:40,611 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 11:53:40,612 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 11:53:40,612 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 11:53:40,644 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 11:53:40,646 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 11:53:40,647 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 11:53:40,647 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 11:53:40,648 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 11:53:40,648 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 11:53:40,648 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 11:53:40,648 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 11:53:40,648 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 11:53:40,649 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 11:53:40,649 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 11:53:40,649 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 11:53:40,650 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 11:53:40,650 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 11:53:40,650 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 11:53:40,650 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 11:53:40,655 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 11:53:40,655 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 11:53:40,655 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 11:53:40,655 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 11:53:40,655 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 11:53:40,656 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 11:53:40,656 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 11:53:40,656 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 11:53:40,656 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 11:53:40,657 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 11:53:40,657 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 11:53:40,657 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 11:53:40,657 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 11:53:40,657 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 11:53:40,658 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 11:53:40,658 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 11:53:40,658 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 11:53:40,709 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 11:53:40,721 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 11:53:40,724 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 11:53:40,726 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 11:53:40,726 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 11:53:40,727 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label15_true-unreach-call.c [2018-09-10 11:53:41,094 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62c565c57/4eca852157814398919d43a74f7bac60/FLAG3a27687fa [2018-09-10 11:53:41,610 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 11:53:41,612 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label15_true-unreach-call.c [2018-09-10 11:53:41,655 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62c565c57/4eca852157814398919d43a74f7bac60/FLAG3a27687fa [2018-09-10 11:53:41,676 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62c565c57/4eca852157814398919d43a74f7bac60 [2018-09-10 11:53:41,688 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 11:53:41,694 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 11:53:41,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 11:53:41,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 11:53:41,704 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 11:53:41,705 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:53:41" (1/1) ... [2018-09-10 11:53:41,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c38cb18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:53:41, skipping insertion in model container [2018-09-10 11:53:41,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 11:53:41" (1/1) ... [2018-09-10 11:53:42,075 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 11:53:43,256 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:53:43,277 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 11:53:44,169 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 11:53:44,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:53:44 WrapperNode [2018-09-10 11:53:44,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 11:53:44,604 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 11:53:44,604 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 11:53:44,604 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 11:53:44,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:53:44" (1/1) ... [2018-09-10 11:53:44,739 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:53:44" (1/1) ... [2018-09-10 11:53:44,909 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 11:53:44,910 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 11:53:44,910 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 11:53:44,910 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 11:53:45,728 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:53:44" (1/1) ... [2018-09-10 11:53:45,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:53:44" (1/1) ... [2018-09-10 11:53:45,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:53:44" (1/1) ... [2018-09-10 11:53:45,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:53:44" (1/1) ... [2018-09-10 11:53:45,921 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:53:44" (1/1) ... [2018-09-10 11:53:45,962 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:53:44" (1/1) ... [2018-09-10 11:53:46,029 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:53:44" (1/1) ... [2018-09-10 11:53:46,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 11:53:46,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 11:53:46,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 11:53:46,093 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 11:53:46,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:53:44" (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 11:53:46,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 11:53:46,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 11:53:46,174 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 11:53:46,174 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 11:53:46,175 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 11:53:46,175 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 11:53:46,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 11:53:46,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 11:53:46,175 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 11:53:46,176 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 11:53:46,176 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 11:53:46,176 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 11:53:46,176 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 11:53:46,176 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 11:53:59,379 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 11:53:59,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:53:59 BoogieIcfgContainer [2018-09-10 11:53:59,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 11:53:59,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 11:53:59,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 11:53:59,384 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 11:53:59,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 11:53:41" (1/3) ... [2018-09-10 11:53:59,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@674e9f85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:53:59, skipping insertion in model container [2018-09-10 11:53:59,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 11:53:44" (2/3) ... [2018-09-10 11:53:59,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@674e9f85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 11:53:59, skipping insertion in model container [2018-09-10 11:53:59,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 11:53:59" (3/3) ... [2018-09-10 11:53:59,387 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label15_true-unreach-call.c [2018-09-10 11:53:59,397 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 11:53:59,407 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 11:53:59,465 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 11:53:59,466 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 11:53:59,467 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 11:53:59,467 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 11:53:59,467 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 11:53:59,467 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 11:53:59,467 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 11:53:59,467 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 11:53:59,467 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 11:53:59,524 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-09-10 11:53:59,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-09-10 11:53:59,532 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:53:59,533 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] [2018-09-10 11:53:59,534 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 11:53:59,539 INFO L82 PathProgramCache]: Analyzing trace with hash -381152383, now seen corresponding path program 1 times [2018-09-10 11:53:59,541 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:53:59,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:53:59,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:53:59,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:53:59,591 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:53:59,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:54:00,054 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 11:54:00,056 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:54:00,057 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 11:54:00,057 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:54:00,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 11:54:00,080 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 11:54:00,081 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:54:00,084 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-09-10 11:54:16,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:54:16,420 INFO L93 Difference]: Finished difference Result 4065 states and 7606 transitions. [2018-09-10 11:54:16,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 11:54:16,424 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2018-09-10 11:54:16,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:54:16,474 INFO L225 Difference]: With dead ends: 4065 [2018-09-10 11:54:16,475 INFO L226 Difference]: Without dead ends: 2939 [2018-09-10 11:54:16,488 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:54:16,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2018-09-10 11:54:16,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 1972. [2018-09-10 11:54:16,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1972 states. [2018-09-10 11:54:16,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1972 states to 1972 states and 3594 transitions. [2018-09-10 11:54:16,671 INFO L78 Accepts]: Start accepts. Automaton has 1972 states and 3594 transitions. Word has length 43 [2018-09-10 11:54:16,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:54:16,672 INFO L480 AbstractCegarLoop]: Abstraction has 1972 states and 3594 transitions. [2018-09-10 11:54:16,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 11:54:16,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1972 states and 3594 transitions. [2018-09-10 11:54:16,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-09-10 11:54:16,683 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:54:16,683 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:54:16,687 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 11:54:16,687 INFO L82 PathProgramCache]: Analyzing trace with hash -576558653, now seen corresponding path program 1 times [2018-09-10 11:54:16,688 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:54:16,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:54:16,690 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:54:16,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:54:16,691 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:54:16,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:54:17,148 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:54:17,149 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:54:17,149 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:54:17,149 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:54:17,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:54:17,151 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:54:17,151 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:54:17,152 INFO L87 Difference]: Start difference. First operand 1972 states and 3594 transitions. Second operand 6 states. [2018-09-10 11:54:32,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:54:32,444 INFO L93 Difference]: Finished difference Result 5660 states and 10515 transitions. [2018-09-10 11:54:32,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:54:32,445 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2018-09-10 11:54:32,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:54:32,476 INFO L225 Difference]: With dead ends: 5660 [2018-09-10 11:54:32,476 INFO L226 Difference]: Without dead ends: 3694 [2018-09-10 11:54:32,483 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:54:32,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3694 states. [2018-09-10 11:54:32,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3694 to 3663. [2018-09-10 11:54:32,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3663 states. [2018-09-10 11:54:32,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3663 states to 3663 states and 6064 transitions. [2018-09-10 11:54:32,602 INFO L78 Accepts]: Start accepts. Automaton has 3663 states and 6064 transitions. Word has length 116 [2018-09-10 11:54:32,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:54:32,603 INFO L480 AbstractCegarLoop]: Abstraction has 3663 states and 6064 transitions. [2018-09-10 11:54:32,603 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:54:32,603 INFO L276 IsEmpty]: Start isEmpty. Operand 3663 states and 6064 transitions. [2018-09-10 11:54:32,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-09-10 11:54:32,616 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:54:32,617 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:54:32,617 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 11:54:32,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1104941212, now seen corresponding path program 1 times [2018-09-10 11:54:32,618 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:54:32,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:54:32,619 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:54:32,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:54:32,619 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:54:32,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:54:32,879 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:54:32,880 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:54:32,880 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 11:54:32,880 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:54:32,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 11:54:32,881 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 11:54:32,881 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:54:32,882 INFO L87 Difference]: Start difference. First operand 3663 states and 6064 transitions. Second operand 6 states. [2018-09-10 11:54:45,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:54:45,352 INFO L93 Difference]: Finished difference Result 12410 states and 20905 transitions. [2018-09-10 11:54:45,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 11:54:45,353 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2018-09-10 11:54:45,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:54:45,408 INFO L225 Difference]: With dead ends: 12410 [2018-09-10 11:54:45,408 INFO L226 Difference]: Without dead ends: 8753 [2018-09-10 11:54:45,434 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-10 11:54:45,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8753 states. [2018-09-10 11:54:45,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8753 to 8702. [2018-09-10 11:54:45,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8702 states. [2018-09-10 11:54:45,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8702 states to 8702 states and 13042 transitions. [2018-09-10 11:54:45,788 INFO L78 Accepts]: Start accepts. Automaton has 8702 states and 13042 transitions. Word has length 129 [2018-09-10 11:54:45,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:54:45,789 INFO L480 AbstractCegarLoop]: Abstraction has 8702 states and 13042 transitions. [2018-09-10 11:54:45,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 11:54:45,789 INFO L276 IsEmpty]: Start isEmpty. Operand 8702 states and 13042 transitions. [2018-09-10 11:54:45,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-09-10 11:54:45,795 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:54:45,795 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:54:45,795 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 11:54:45,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1411381596, now seen corresponding path program 1 times [2018-09-10 11:54:45,796 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:54:45,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:54:45,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:54:45,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:54:45,798 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:54:45,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:54:46,175 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:54:46,175 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:54:46,175 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 11:54:46,175 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:54:46,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:54:46,178 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:54:46,178 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-10 11:54:46,178 INFO L87 Difference]: Start difference. First operand 8702 states and 13042 transitions. Second operand 5 states. [2018-09-10 11:55:04,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:55:04,941 INFO L93 Difference]: Finished difference Result 26433 states and 42234 transitions. [2018-09-10 11:55:04,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 11:55:04,942 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2018-09-10 11:55:04,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:55:05,023 INFO L225 Difference]: With dead ends: 26433 [2018-09-10 11:55:05,025 INFO L226 Difference]: Without dead ends: 17737 [2018-09-10 11:55:05,057 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-10 11:55:05,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17737 states. [2018-09-10 11:55:05,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17737 to 17457. [2018-09-10 11:55:05,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17457 states. [2018-09-10 11:55:05,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17457 states to 17457 states and 25482 transitions. [2018-09-10 11:55:05,547 INFO L78 Accepts]: Start accepts. Automaton has 17457 states and 25482 transitions. Word has length 145 [2018-09-10 11:55:05,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:55:05,548 INFO L480 AbstractCegarLoop]: Abstraction has 17457 states and 25482 transitions. [2018-09-10 11:55:05,548 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:55:05,548 INFO L276 IsEmpty]: Start isEmpty. Operand 17457 states and 25482 transitions. [2018-09-10 11:55:05,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-09-10 11:55:05,551 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:55:05,551 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:55:05,551 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 11:55:05,552 INFO L82 PathProgramCache]: Analyzing trace with hash -261832020, now seen corresponding path program 1 times [2018-09-10 11:55:05,552 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:55:05,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:55:05,553 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:55:05,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:55:05,553 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:55:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:55:05,896 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:55:05,896 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:55:05,896 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 11:55:05,896 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:55:05,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:55:05,897 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:55:05,897 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-10 11:55:05,898 INFO L87 Difference]: Start difference. First operand 17457 states and 25482 transitions. Second operand 5 states. [2018-09-10 11:55:34,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:55:34,511 INFO L93 Difference]: Finished difference Result 53250 states and 82546 transitions. [2018-09-10 11:55:34,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 11:55:34,511 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2018-09-10 11:55:34,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:55:34,651 INFO L225 Difference]: With dead ends: 53250 [2018-09-10 11:55:34,652 INFO L226 Difference]: Without dead ends: 35799 [2018-09-10 11:55:34,714 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-10 11:55:34,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35799 states. [2018-09-10 11:55:35,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35799 to 35515. [2018-09-10 11:55:35,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35515 states. [2018-09-10 11:55:35,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35515 states to 35515 states and 52201 transitions. [2018-09-10 11:55:35,476 INFO L78 Accepts]: Start accepts. Automaton has 35515 states and 52201 transitions. Word has length 149 [2018-09-10 11:55:35,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:55:35,477 INFO L480 AbstractCegarLoop]: Abstraction has 35515 states and 52201 transitions. [2018-09-10 11:55:35,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 11:55:35,477 INFO L276 IsEmpty]: Start isEmpty. Operand 35515 states and 52201 transitions. [2018-09-10 11:55:35,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-09-10 11:55:35,480 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:55:35,480 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:55:35,481 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 11:55:35,481 INFO L82 PathProgramCache]: Analyzing trace with hash 536618048, now seen corresponding path program 1 times [2018-09-10 11:55:35,481 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:55:35,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:55:35,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:55:35,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:55:35,482 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:55:35,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:55:35,703 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:55:35,704 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 11:55:35,704 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 11:55:35,704 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:55:35,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 11:55:35,705 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 11:55:35,705 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 11:55:35,705 INFO L87 Difference]: Start difference. First operand 35515 states and 52201 transitions. Second operand 4 states. [2018-09-10 11:55:47,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:55:47,075 INFO L93 Difference]: Finished difference Result 130045 states and 208201 transitions. [2018-09-10 11:55:47,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 11:55:47,081 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2018-09-10 11:55:47,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:55:47,473 INFO L225 Difference]: With dead ends: 130045 [2018-09-10 11:55:47,473 INFO L226 Difference]: Without dead ends: 94536 [2018-09-10 11:55:47,640 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 11:55:47,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94536 states. [2018-09-10 11:55:49,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94536 to 94494. [2018-09-10 11:55:49,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94494 states. [2018-09-10 11:55:49,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94494 states to 94494 states and 136777 transitions. [2018-09-10 11:55:49,828 INFO L78 Accepts]: Start accepts. Automaton has 94494 states and 136777 transitions. Word has length 159 [2018-09-10 11:55:49,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:55:49,828 INFO L480 AbstractCegarLoop]: Abstraction has 94494 states and 136777 transitions. [2018-09-10 11:55:49,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 11:55:49,829 INFO L276 IsEmpty]: Start isEmpty. Operand 94494 states and 136777 transitions. [2018-09-10 11:55:49,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2018-09-10 11:55:49,936 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:55:49,937 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:55:49,937 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 11:55:49,938 INFO L82 PathProgramCache]: Analyzing trace with hash -749711095, now seen corresponding path program 1 times [2018-09-10 11:55:49,938 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:55:49,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:55:49,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:55:49,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:55:49,940 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:55:50,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:55:50,543 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 152 proven. 34 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:55:50,544 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:55:50,544 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 11:55:50,564 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:55:50,564 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:55:50,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:55:50,800 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:55:51,096 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2018-09-10 11:55:51,097 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:55:51,650 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2018-09-10 11:55:51,681 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 11:55:51,682 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 6 [2018-09-10 11:55:51,682 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:55:51,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 11:55:51,683 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 11:55:51,683 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:55:51,684 INFO L87 Difference]: Start difference. First operand 94494 states and 136777 transitions. Second operand 3 states. [2018-09-10 11:56:02,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:56:02,195 INFO L93 Difference]: Finished difference Result 200306 states and 292882 transitions. [2018-09-10 11:56:02,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 11:56:02,197 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 395 [2018-09-10 11:56:02,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:56:02,710 INFO L225 Difference]: With dead ends: 200306 [2018-09-10 11:56:02,710 INFO L226 Difference]: Without dead ends: 105818 [2018-09-10 11:56:03,196 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 796 GetRequests, 790 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-10 11:56:03,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105818 states. [2018-09-10 11:56:06,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105818 to 102600. [2018-09-10 11:56:06,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102600 states. [2018-09-10 11:56:06,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102600 states to 102600 states and 138405 transitions. [2018-09-10 11:56:06,351 INFO L78 Accepts]: Start accepts. Automaton has 102600 states and 138405 transitions. Word has length 395 [2018-09-10 11:56:06,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:56:06,351 INFO L480 AbstractCegarLoop]: Abstraction has 102600 states and 138405 transitions. [2018-09-10 11:56:06,351 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 11:56:06,352 INFO L276 IsEmpty]: Start isEmpty. Operand 102600 states and 138405 transitions. [2018-09-10 11:56:06,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2018-09-10 11:56:06,466 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:56:06,467 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 11:56:06,467 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 11:56:06,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1622307295, now seen corresponding path program 1 times [2018-09-10 11:56:06,468 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:56:06,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:56:06,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:56:06,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:56:06,469 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:56:06,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:56:07,037 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:56:07,037 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:56:07,037 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 11:56:07,044 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:56:07,044 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:56:07,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:56:07,210 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:56:07,398 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:56:07,399 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:56:08,889 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:56:08,923 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:56:08,923 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 11:56:08,954 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:56:08,954 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:56:09,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:56:09,335 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:56:09,623 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:56:09,623 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:56:10,274 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 11:56:10,277 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 11:56:10,277 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-10 11:56:10,277 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 11:56:10,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 11:56:10,278 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 11:56:10,278 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-10 11:56:10,279 INFO L87 Difference]: Start difference. First operand 102600 states and 138405 transitions. Second operand 9 states. [2018-09-10 11:56:39,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:56:39,514 INFO L93 Difference]: Finished difference Result 281023 states and 435443 transitions. [2018-09-10 11:56:39,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-10 11:56:39,515 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 443 [2018-09-10 11:56:39,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:56:40,597 INFO L225 Difference]: With dead ends: 281023 [2018-09-10 11:56:40,597 INFO L226 Difference]: Without dead ends: 178429 [2018-09-10 11:56:40,906 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1797 GetRequests, 1767 SyntacticMatches, 9 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2018-09-10 11:56:41,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178429 states. [2018-09-10 11:56:44,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178429 to 176599. [2018-09-10 11:56:44,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176599 states. [2018-09-10 11:56:45,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176599 states to 176599 states and 259879 transitions. [2018-09-10 11:56:45,621 INFO L78 Accepts]: Start accepts. Automaton has 176599 states and 259879 transitions. Word has length 443 [2018-09-10 11:56:45,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 11:56:45,622 INFO L480 AbstractCegarLoop]: Abstraction has 176599 states and 259879 transitions. [2018-09-10 11:56:45,622 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 11:56:45,622 INFO L276 IsEmpty]: Start isEmpty. Operand 176599 states and 259879 transitions. [2018-09-10 11:56:45,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2018-09-10 11:56:45,740 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 11:56:45,741 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 11:56:45,741 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 11:56:45,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1385991310, now seen corresponding path program 1 times [2018-09-10 11:56:45,742 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 11:56:45,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:56:45,744 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:56:45,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 11:56:45,745 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 11:56:45,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:56:46,271 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 72 proven. 189 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:56:46,271 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 11:56:46,271 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 11:56:46,279 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 11:56:46,280 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 11:56:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 11:56:46,466 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 11:56:47,846 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 229 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2018-09-10 11:56:47,846 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 11:56:48,184 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 72 proven. 189 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 11:56:48,204 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 11:56:48,205 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-10 11:56:48,205 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 11:56:48,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 11:56:48,206 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 11:56:48,206 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-09-10 11:56:48,206 INFO L87 Difference]: Start difference. First operand 176599 states and 259879 transitions. Second operand 5 states. [2018-09-10 11:57:10,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 11:57:10,010 INFO L93 Difference]: Finished difference Result 449089 states and 706120 transitions. [2018-09-10 11:57:10,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 11:57:10,011 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 489 [2018-09-10 11:57:10,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 11:57:11,413 INFO L225 Difference]: With dead ends: 449089 [2018-09-10 11:57:11,413 INFO L226 Difference]: Without dead ends: 272496 [2018-09-10 11:57:11,907 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 987 GetRequests, 973 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-09-10 11:57:12,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272496 states. Received shutdown request... [2018-09-10 11:57:26,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272496 to 271114. [2018-09-10 11:57:26,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271114 states. [2018-09-10 11:57:26,309 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 11:57:26,314 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 11:57:26,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 11:57:26 BoogieIcfgContainer [2018-09-10 11:57:26,315 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 11:57:26,316 INFO L168 Benchmark]: Toolchain (without parser) took 224627.49 ms. Allocated memory was 1.5 GB in the beginning and 4.8 GB in the end (delta: 3.2 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. [2018-09-10 11:57:26,318 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 11:57:26,319 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2908.53 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: 339.3 MB). Peak memory consumption was 339.3 MB. Max. memory is 7.1 GB. [2018-09-10 11:57:26,320 INFO L168 Benchmark]: Boogie Procedure Inliner took 305.33 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-09-10 11:57:26,320 INFO L168 Benchmark]: Boogie Preprocessor took 1182.90 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 11:57:26,321 INFO L168 Benchmark]: RCFGBuilder took 13286.61 ms. Allocated memory was 2.6 GB in the beginning and 2.7 GB in the end (delta: 153.1 MB). Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 91.6 MB). Peak memory consumption was 743.5 MB. Max. memory is 7.1 GB. [2018-09-10 11:57:26,324 INFO L168 Benchmark]: TraceAbstraction took 206934.78 ms. Allocated memory was 2.7 GB in the beginning and 4.8 GB in the end (delta: 2.1 GB). Free memory was 2.3 GB in the beginning and 3.2 GB in the end (delta: -921.5 MB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. [2018-09-10 11:57:26,330 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 2908.53 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: 339.3 MB). Peak memory consumption was 339.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 305.33 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1182.90 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 13286.61 ms. Allocated memory was 2.6 GB in the beginning and 2.7 GB in the end (delta: 153.1 MB). Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 91.6 MB). Peak memory consumption was 743.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 206934.78 ms. Allocated memory was 2.7 GB in the beginning and 4.8 GB in the end (delta: 2.1 GB). Free memory was 2.3 GB in the beginning and 3.2 GB in the end (delta: -921.5 MB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 120]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 120). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 206.8s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 169.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4952 SDtfs, 30684 SDslu, 4506 SDs, 0 SdLazy, 57600 SolverSat, 14146 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 135.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3629 GetRequests, 3547 SyntacticMatches, 15 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=176599occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 26.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 6703 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 7.9s InterpolantComputationTime, 3838 NumberOfCodeBlocks, 3838 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 5591 ConstructedInterpolants, 0 QuantifiedInterpolants, 6415574 SizeOfPredicates, 3 NumberOfNonLiveVariables, 2685 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 17 InterpolantComputations, 9 PerfectInterpolantSequences, 1959/2381 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_label15_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_11-57-26-350.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label15_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_11-57-26-350.csv Completed graceful shutdown