java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label12_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 11:43:12,091 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 11:43:12,093 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 11:43:12,112 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 11:43:12,112 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 11:43:12,114 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 11:43:12,116 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 11:43:12,118 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 11:43:12,120 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 11:43:12,121 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 11:43:12,122 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 11:43:12,122 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 11:43:12,123 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 11:43:12,124 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 11:43:12,125 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 11:43:12,126 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 11:43:12,127 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 11:43:12,129 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 11:43:12,131 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 11:43:12,133 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 11:43:12,134 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 11:43:12,135 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 11:43:12,138 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 11:43:12,138 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 11:43:12,138 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 11:43:12,139 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 11:43:12,140 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 11:43:12,141 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 11:43:12,142 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 11:43:12,146 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 11:43:12,147 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 11:43:12,147 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 11:43:12,148 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 11:43:12,148 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 11:43:12,149 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 11:43:12,150 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 11:43:12,150 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 11:43:12,183 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 11:43:12,183 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 11:43:12,184 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 11:43:12,187 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 11:43:12,187 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 11:43:12,187 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 11:43:12,187 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 11:43:12,188 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 11:43:12,188 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 11:43:12,188 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 11:43:12,188 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 11:43:12,189 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 11:43:12,189 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 11:43:12,189 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 11:43:12,190 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 11:43:12,190 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 11:43:12,190 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 11:43:12,190 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 11:43:12,191 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 11:43:12,192 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 11:43:12,192 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 11:43:12,192 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 11:43:12,192 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 11:43:12,192 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 11:43:12,193 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 11:43:12,193 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 11:43:12,193 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 11:43:12,193 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 11:43:12,193 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 11:43:12,194 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 11:43:12,194 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 11:43:12,194 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 11:43:12,194 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 11:43:12,242 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 11:43:12,254 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 11:43:12,258 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 11:43:12,260 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 11:43:12,260 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 11:43:12,261 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label12_false-unreach-call.c [2018-07-24 11:43:12,613 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f60cbe10/77b871ee72784cbe9c955fdd10984858/FLAG32c230e62 [2018-07-24 11:43:12,868 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 11:43:12,870 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label12_false-unreach-call.c [2018-07-24 11:43:12,898 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f60cbe10/77b871ee72784cbe9c955fdd10984858/FLAG32c230e62 [2018-07-24 11:43:12,921 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f60cbe10/77b871ee72784cbe9c955fdd10984858 [2018-07-24 11:43:12,933 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 11:43:12,936 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 11:43:12,938 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 11:43:12,938 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 11:43:12,947 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 11:43:12,948 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 11:43:12" (1/1) ... [2018-07-24 11:43:12,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66832ad0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:43:12, skipping insertion in model container [2018-07-24 11:43:12,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 11:43:12" (1/1) ... [2018-07-24 11:43:13,147 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 11:43:13,406 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 11:43:13,434 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 11:43:13,583 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 11:43:13,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:43:13 WrapperNode [2018-07-24 11:43:13,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 11:43:13,645 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 11:43:13,646 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 11:43:13,646 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 11:43:13,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:43:13" (1/1) ... [2018-07-24 11:43:13,686 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:43:13" (1/1) ... [2018-07-24 11:43:13,752 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 11:43:13,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 11:43:13,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 11:43:13,753 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 11:43:13,765 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:43:13" (1/1) ... [2018-07-24 11:43:13,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:43:13" (1/1) ... [2018-07-24 11:43:13,780 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:43:13" (1/1) ... [2018-07-24 11:43:13,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:43:13" (1/1) ... [2018-07-24 11:43:13,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:43:13" (1/1) ... [2018-07-24 11:43:13,987 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:43:13" (1/1) ... [2018-07-24 11:43:13,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:43:13" (1/1) ... [2018-07-24 11:43:14,004 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 11:43:14,004 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 11:43:14,004 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 11:43:14,005 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 11:43:14,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:43:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 11:43:14,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 11:43:14,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 11:43:14,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 11:43:14,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 11:43:14,075 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 11:43:14,075 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 11:43:14,075 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 11:43:14,076 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 11:43:18,086 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 11:43:18,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 11:43:18 BoogieIcfgContainer [2018-07-24 11:43:18,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 11:43:18,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 11:43:18,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 11:43:18,092 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 11:43:18,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 11:43:12" (1/3) ... [2018-07-24 11:43:18,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45533b88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 11:43:18, skipping insertion in model container [2018-07-24 11:43:18,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 11:43:13" (2/3) ... [2018-07-24 11:43:18,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45533b88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 11:43:18, skipping insertion in model container [2018-07-24 11:43:18,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 11:43:18" (3/3) ... [2018-07-24 11:43:18,099 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label12_false-unreach-call.c [2018-07-24 11:43:18,109 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 11:43:18,120 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 11:43:18,172 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 11:43:18,172 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 11:43:18,173 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 11:43:18,173 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 11:43:18,173 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 11:43:18,173 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 11:43:18,174 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 11:43:18,174 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 11:43:18,174 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 11:43:18,200 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-07-24 11:43:18,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-07-24 11:43:18,207 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:43:18,208 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:43:18,208 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:43:18,213 INFO L82 PathProgramCache]: Analyzing trace with hash -794010631, now seen corresponding path program 1 times [2018-07-24 11:43:18,216 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:43:18,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:43:18,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:43:18,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:43:18,267 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:43:18,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:43:18,576 WARN L169 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:43:18,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:43:18,596 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:43:18,597 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 11:43:18,597 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:43:18,603 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 11:43:18,614 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 11:43:18,615 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 11:43:18,617 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-07-24 11:43:22,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:43:22,386 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-07-24 11:43:22,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 11:43:22,389 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2018-07-24 11:43:22,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:43:22,409 INFO L225 Difference]: With dead ends: 574 [2018-07-24 11:43:22,409 INFO L226 Difference]: Without dead ends: 356 [2018-07-24 11:43:22,416 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 11:43:22,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-07-24 11:43:22,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-07-24 11:43:22,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-07-24 11:43:22,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 612 transitions. [2018-07-24 11:43:22,495 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 612 transitions. Word has length 19 [2018-07-24 11:43:22,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:43:22,496 INFO L471 AbstractCegarLoop]: Abstraction has 356 states and 612 transitions. [2018-07-24 11:43:22,496 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 11:43:22,496 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 612 transitions. [2018-07-24 11:43:22,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-07-24 11:43:22,502 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:43:22,503 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 11:43:22,503 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:43:22,504 INFO L82 PathProgramCache]: Analyzing trace with hash 947655200, now seen corresponding path program 1 times [2018-07-24 11:43:22,504 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:43:22,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:43:22,505 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:43:22,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:43:22,506 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:43:22,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:43:22,923 WARN L169 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:43:23,042 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-24 11:43:23,043 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:43:23,043 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:43:23,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:43:23,060 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:43:23,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:43:23,134 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:43:23,211 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:43:23,212 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:43:23,399 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:43:23,421 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 11:43:23,421 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2018-07-24 11:43:23,421 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:43:23,422 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 11:43:23,423 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 11:43:23,423 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 11:43:23,423 INFO L87 Difference]: Start difference. First operand 356 states and 612 transitions. Second operand 3 states. [2018-07-24 11:43:24,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:43:24,720 INFO L93 Difference]: Finished difference Result 994 states and 1779 transitions. [2018-07-24 11:43:24,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 11:43:24,726 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2018-07-24 11:43:24,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:43:24,734 INFO L225 Difference]: With dead ends: 994 [2018-07-24 11:43:24,734 INFO L226 Difference]: Without dead ends: 644 [2018-07-24 11:43:24,737 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 193 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 11:43:24,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2018-07-24 11:43:24,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 644. [2018-07-24 11:43:24,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 644 states. [2018-07-24 11:43:24,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 1057 transitions. [2018-07-24 11:43:24,785 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 1057 transitions. Word has length 97 [2018-07-24 11:43:24,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:43:24,786 INFO L471 AbstractCegarLoop]: Abstraction has 644 states and 1057 transitions. [2018-07-24 11:43:24,786 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 11:43:24,787 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 1057 transitions. [2018-07-24 11:43:24,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-07-24 11:43:24,794 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:43:24,794 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 11:43:24,795 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:43:24,795 INFO L82 PathProgramCache]: Analyzing trace with hash -102046124, now seen corresponding path program 1 times [2018-07-24 11:43:24,795 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:43:24,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:43:24,796 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:43:24,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:43:24,797 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:43:24,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:43:25,126 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:43:25,127 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 11:43:25,127 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 11:43:25,127 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:43:25,128 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:43:25,128 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:43:25,129 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 11:43:25,129 INFO L87 Difference]: Start difference. First operand 644 states and 1057 transitions. Second operand 5 states. [2018-07-24 11:43:30,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:43:30,139 INFO L93 Difference]: Finished difference Result 1767 states and 3000 transitions. [2018-07-24 11:43:30,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 11:43:30,141 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2018-07-24 11:43:30,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:43:30,153 INFO L225 Difference]: With dead ends: 1767 [2018-07-24 11:43:30,153 INFO L226 Difference]: Without dead ends: 1129 [2018-07-24 11:43:30,158 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-07-24 11:43:30,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2018-07-24 11:43:30,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 1121. [2018-07-24 11:43:30,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1121 states. [2018-07-24 11:43:30,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1840 transitions. [2018-07-24 11:43:30,226 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1840 transitions. Word has length 139 [2018-07-24 11:43:30,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:43:30,227 INFO L471 AbstractCegarLoop]: Abstraction has 1121 states and 1840 transitions. [2018-07-24 11:43:30,227 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:43:30,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1840 transitions. [2018-07-24 11:43:30,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-07-24 11:43:30,238 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:43:30,238 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:43:30,238 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:43:30,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1621522830, now seen corresponding path program 1 times [2018-07-24 11:43:30,239 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:43:30,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:43:30,243 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:43:30,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:43:30,243 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:43:30,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:43:30,926 WARN L169 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2018-07-24 11:43:31,089 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:43:31,090 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:43:31,090 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:43:31,098 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:43:31,098 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:43:31,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:43:31,194 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:43:31,380 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:43:31,380 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:43:32,011 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:43:32,045 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:43:32,045 INFO L191 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 [2018-07-24 11:43:32,074 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:43:32,074 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:43:32,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:43:32,247 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:43:32,356 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:43:32,356 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:43:32,739 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 11:43:32,742 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:43:32,742 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5, 5, 5] total 21 [2018-07-24 11:43:32,742 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:43:32,743 INFO L450 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-07-24 11:43:32,744 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-07-24 11:43:32,744 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2018-07-24 11:43:32,744 INFO L87 Difference]: Start difference. First operand 1121 states and 1840 transitions. Second operand 15 states. [2018-07-24 11:43:33,844 WARN L169 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 37 [2018-07-24 11:43:42,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:43:42,362 INFO L93 Difference]: Finished difference Result 3531 states and 6861 transitions. [2018-07-24 11:43:42,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-07-24 11:43:42,362 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 210 [2018-07-24 11:43:42,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:43:42,392 INFO L225 Difference]: With dead ends: 3531 [2018-07-24 11:43:42,393 INFO L226 Difference]: Without dead ends: 2560 [2018-07-24 11:43:42,440 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 911 GetRequests, 851 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 868 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=803, Invalid=2619, Unknown=0, NotChecked=0, Total=3422 [2018-07-24 11:43:42,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2560 states. [2018-07-24 11:43:42,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2560 to 2269. [2018-07-24 11:43:42,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2269 states. [2018-07-24 11:43:42,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2269 states to 2269 states and 3348 transitions. [2018-07-24 11:43:42,572 INFO L78 Accepts]: Start accepts. Automaton has 2269 states and 3348 transitions. Word has length 210 [2018-07-24 11:43:42,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:43:42,573 INFO L471 AbstractCegarLoop]: Abstraction has 2269 states and 3348 transitions. [2018-07-24 11:43:42,573 INFO L472 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-07-24 11:43:42,573 INFO L276 IsEmpty]: Start isEmpty. Operand 2269 states and 3348 transitions. [2018-07-24 11:43:42,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-07-24 11:43:42,585 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:43:42,585 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:43:42,585 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:43:42,586 INFO L82 PathProgramCache]: Analyzing trace with hash 107017983, now seen corresponding path program 1 times [2018-07-24 11:43:42,586 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:43:42,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:43:42,587 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:43:42,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:43:42,587 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:43:42,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:43:42,853 WARN L169 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:43:42,937 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 24 proven. 91 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:43:42,937 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:43:42,937 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:43:42,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:43:42,945 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:43:43,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:43:43,036 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:43:43,271 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-07-24 11:43:43,271 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:43:43,457 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 24 proven. 91 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:43:43,478 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 11:43:43,478 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-07-24 11:43:43,478 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:43:43,479 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:43:43,479 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:43:43,479 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-07-24 11:43:43,480 INFO L87 Difference]: Start difference. First operand 2269 states and 3348 transitions. Second operand 5 states. [2018-07-24 11:43:45,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:43:45,643 INFO L93 Difference]: Finished difference Result 4451 states and 6946 transitions. [2018-07-24 11:43:45,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 11:43:45,644 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 235 [2018-07-24 11:43:45,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:43:45,661 INFO L225 Difference]: With dead ends: 4451 [2018-07-24 11:43:45,661 INFO L226 Difference]: Without dead ends: 2332 [2018-07-24 11:43:45,669 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 464 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-07-24 11:43:45,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2332 states. [2018-07-24 11:43:45,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2332 to 2269. [2018-07-24 11:43:45,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2269 states. [2018-07-24 11:43:45,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2269 states to 2269 states and 3156 transitions. [2018-07-24 11:43:45,750 INFO L78 Accepts]: Start accepts. Automaton has 2269 states and 3156 transitions. Word has length 235 [2018-07-24 11:43:45,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:43:45,751 INFO L471 AbstractCegarLoop]: Abstraction has 2269 states and 3156 transitions. [2018-07-24 11:43:45,751 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:43:45,751 INFO L276 IsEmpty]: Start isEmpty. Operand 2269 states and 3156 transitions. [2018-07-24 11:43:45,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-07-24 11:43:45,761 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:43:45,762 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:43:45,762 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:43:45,762 INFO L82 PathProgramCache]: Analyzing trace with hash 68711443, now seen corresponding path program 1 times [2018-07-24 11:43:45,762 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:43:45,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:43:45,763 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:43:45,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:43:45,763 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:43:45,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:43:46,112 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 24 proven. 115 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:43:46,112 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:43:46,112 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:43:46,120 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:43:46,120 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:43:46,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:43:46,215 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:43:46,315 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-07-24 11:43:46,316 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:43:46,932 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 24 proven. 115 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 11:43:46,954 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 11:43:46,954 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-07-24 11:43:46,954 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 11:43:46,955 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 11:43:46,955 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 11:43:46,955 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-07-24 11:43:46,955 INFO L87 Difference]: Start difference. First operand 2269 states and 3156 transitions. Second operand 5 states. [2018-07-24 11:43:49,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:43:49,455 INFO L93 Difference]: Finished difference Result 5460 states and 7832 transitions. [2018-07-24 11:43:49,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 11:43:49,456 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 261 [2018-07-24 11:43:49,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:43:49,472 INFO L225 Difference]: With dead ends: 5460 [2018-07-24 11:43:49,472 INFO L226 Difference]: Without dead ends: 3341 [2018-07-24 11:43:49,485 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 516 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-07-24 11:43:49,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3341 states. [2018-07-24 11:43:49,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3341 to 3220. [2018-07-24 11:43:49,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3220 states. [2018-07-24 11:43:49,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3220 states to 3220 states and 4267 transitions. [2018-07-24 11:43:49,582 INFO L78 Accepts]: Start accepts. Automaton has 3220 states and 4267 transitions. Word has length 261 [2018-07-24 11:43:49,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:43:49,583 INFO L471 AbstractCegarLoop]: Abstraction has 3220 states and 4267 transitions. [2018-07-24 11:43:49,583 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 11:43:49,583 INFO L276 IsEmpty]: Start isEmpty. Operand 3220 states and 4267 transitions. [2018-07-24 11:43:49,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2018-07-24 11:43:49,595 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:43:49,596 INFO L353 BasicCegarLoop]: trace histogram [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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 11:43:49,596 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:43:49,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1932790214, now seen corresponding path program 1 times [2018-07-24 11:43:49,596 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:43:49,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:43:49,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:43:49,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:43:49,597 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:43:49,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:43:49,881 WARN L169 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 11:43:50,241 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 42 proven. 154 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-07-24 11:43:50,241 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:43:50,241 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-07-24 11:43:50,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:43:50,250 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:43:50,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:43:50,359 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:43:50,465 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 257 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-07-24 11:43:50,465 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:43:50,772 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 117 proven. 77 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-07-24 11:43:50,794 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:43:50,794 INFO L191 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 [2018-07-24 11:43:50,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:43:50,812 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:43:51,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:43:51,047 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:43:51,581 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 257 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-07-24 11:43:51,581 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:43:51,902 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 117 proven. 77 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-07-24 11:43:51,904 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 11:43:51,905 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5, 5, 5] total 15 [2018-07-24 11:43:51,905 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 11:43:51,906 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-24 11:43:51,906 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-24 11:43:51,907 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-07-24 11:43:51,907 INFO L87 Difference]: Start difference. First operand 3220 states and 4267 transitions. Second operand 11 states. [2018-07-24 11:43:56,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 11:43:56,349 INFO L93 Difference]: Finished difference Result 7672 states and 10439 transitions. [2018-07-24 11:43:56,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-24 11:43:56,350 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 297 [2018-07-24 11:43:56,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 11:43:56,359 INFO L225 Difference]: With dead ends: 7672 [2018-07-24 11:43:56,360 INFO L226 Difference]: Without dead ends: 2229 [2018-07-24 11:43:56,391 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1221 GetRequests, 1189 SyntacticMatches, 8 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=175, Invalid=475, Unknown=0, NotChecked=0, Total=650 [2018-07-24 11:43:56,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2229 states. [2018-07-24 11:43:56,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2229 to 1582. [2018-07-24 11:43:56,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1582 states. [2018-07-24 11:43:56,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 1819 transitions. [2018-07-24 11:43:56,439 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 1819 transitions. Word has length 297 [2018-07-24 11:43:56,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 11:43:56,439 INFO L471 AbstractCegarLoop]: Abstraction has 1582 states and 1819 transitions. [2018-07-24 11:43:56,439 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-24 11:43:56,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 1819 transitions. [2018-07-24 11:43:56,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2018-07-24 11:43:56,448 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 11:43:56,449 INFO L353 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 11:43:56,449 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 11:43:56,450 INFO L82 PathProgramCache]: Analyzing trace with hash 266382030, now seen corresponding path program 1 times [2018-07-24 11:43:56,450 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 11:43:56,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:43:56,451 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:43:56,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 11:43:56,451 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 11:43:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:43:56,981 WARN L169 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 8 [2018-07-24 11:43:57,345 WARN L169 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-07-24 11:43:57,804 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 42 proven. 258 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-07-24 11:43:57,804 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 11:43:57,804 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-07-24 11:43:57,815 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 11:43:57,815 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 11:43:57,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 11:43:57,934 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 11:43:58,661 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 293 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-07-24 11:43:58,661 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 11:43:59,191 WARN L169 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-07-24 11:43:59,745 WARN L169 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 16 [2018-07-24 11:43:59,973 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 11:44:00,119 WARN L172 XnfTransformerHelper]: Simplifying disjunction of 5538 conjuctions. This might take some time... [2018-07-24 11:44:01,201 INFO L188 XnfTransformerHelper]: Simplified to disjunction of 2919 conjuctions. [2018-07-24 11:44:03,296 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 1780 Received shutdown request... [2018-07-24 11:46:37,157 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-07-24 11:46:37,359 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 11:46:37,359 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 11:46:37,364 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 11:46:37,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 11:46:37 BoogieIcfgContainer [2018-07-24 11:46:37,365 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 11:46:37,365 INFO L168 Benchmark]: Toolchain (without parser) took 204431.93 ms. Allocated memory was 1.5 GB in the beginning and 7.5 GB in the end (delta: 6.0 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 7.2 GB. Max. memory is 7.1 GB. [2018-07-24 11:46:37,366 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 11:46:37,367 INFO L168 Benchmark]: CACSL2BoogieTranslator took 707.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-07-24 11:46:37,368 INFO L168 Benchmark]: Boogie Procedure Inliner took 106.87 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-24 11:46:37,369 INFO L168 Benchmark]: Boogie Preprocessor took 251.42 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 783.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -875.4 MB). Peak memory consumption was 32.3 MB. Max. memory is 7.1 GB. [2018-07-24 11:46:37,373 INFO L168 Benchmark]: RCFGBuilder took 4083.02 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 106.8 MB). Peak memory consumption was 106.8 MB. Max. memory is 7.1 GB. [2018-07-24 11:46:37,373 INFO L168 Benchmark]: TraceAbstraction took 199276.40 ms. Allocated memory was 2.3 GB in the beginning and 7.5 GB in the end (delta: 5.2 GB). Free memory was 2.1 GB in the beginning and 2.9 GB in the end (delta: -801.5 MB). Peak memory consumption was 7.1 GB. Max. memory is 7.1 GB. [2018-07-24 11:46:37,379 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 707.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 106.87 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 251.42 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 783.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -875.4 MB). Peak memory consumption was 32.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4083.02 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 106.8 MB). Peak memory consumption was 106.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 199276.40 ms. Allocated memory was 2.3 GB in the beginning and 7.5 GB in the end (delta: 5.2 GB). Free memory was 2.1 GB in the beginning and 2.9 GB in the end (delta: -801.5 MB). Peak memory consumption was 7.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 40]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 40). Cancelled while BasicCegarLoop was analyzing trace of length 334 with TraceHistMax 4, while TraceCheckSpWp was constructing backward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 1 quantifier alternations, while CnfTransformerHelper was transforming 1780 disjunction. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 199.2s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 29.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 705 SDtfs, 7129 SDslu, 1048 SDs, 0 SdLazy, 11501 SolverSat, 2816 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 22.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3356 GetRequests, 3218 SyntacticMatches, 25 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1079 ImplicationChecksByTransitivity, 6.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3220occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 7 MinimizatonAttempts, 1130 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 6.8s InterpolantComputationTime, 2865 NumberOfCodeBlocks, 2865 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 4451 ConstructedInterpolants, 0 QuantifiedInterpolants, 3654854 SizeOfPredicates, 9 NumberOfNonLiveVariables, 2862 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 21 InterpolantComputations, 6 PerfectInterpolantSequences, 1933/2675 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/Problem10_label12_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_11-46-37-397.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem10_label12_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_11-46-37-397.csv Completed graceful shutdown