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/Problem15_label47_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 12:13:55,132 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 12:13:55,134 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 12:13:55,146 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 12:13:55,146 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 12:13:55,149 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 12:13:55,152 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 12:13:55,154 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 12:13:55,156 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 12:13:55,157 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 12:13:55,158 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 12:13:55,158 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 12:13:55,159 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 12:13:55,160 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 12:13:55,161 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 12:13:55,162 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 12:13:55,163 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 12:13:55,165 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 12:13:55,167 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 12:13:55,168 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 12:13:55,169 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 12:13:55,170 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 12:13:55,173 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 12:13:55,173 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 12:13:55,173 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 12:13:55,174 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 12:13:55,175 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 12:13:55,176 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 12:13:55,177 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 12:13:55,178 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 12:13:55,178 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 12:13:55,179 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 12:13:55,179 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 12:13:55,179 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 12:13:55,180 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 12:13:55,181 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 12:13:55,181 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 12:13:55,196 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 12:13:55,196 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 12:13:55,197 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 12:13:55,198 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 12:13:55,198 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 12:13:55,198 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 12:13:55,198 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 12:13:55,198 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 12:13:55,199 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 12:13:55,199 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 12:13:55,199 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 12:13:55,200 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 12:13:55,200 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 12:13:55,200 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 12:13:55,200 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 12:13:55,200 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 12:13:55,200 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 12:13:55,201 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 12:13:55,201 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 12:13:55,201 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 12:13:55,201 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 12:13:55,201 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 12:13:55,202 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 12:13:55,202 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:13:55,202 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 12:13:55,202 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 12:13:55,202 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 12:13:55,203 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 12:13:55,203 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 12:13:55,203 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 12:13:55,203 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 12:13:55,203 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 12:13:55,204 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 12:13:55,265 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 12:13:55,284 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 12:13:55,292 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 12:13:55,294 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 12:13:55,294 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 12:13:55,295 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label47_false-unreach-call.c [2018-07-24 12:13:55,668 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2026e876/7085f72144b44b708c3810a995bf34e4/FLAG738b549b9 [2018-07-24 12:13:56,055 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 12:13:56,056 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label47_false-unreach-call.c [2018-07-24 12:13:56,083 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2026e876/7085f72144b44b708c3810a995bf34e4/FLAG738b549b9 [2018-07-24 12:13:56,105 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2026e876/7085f72144b44b708c3810a995bf34e4 [2018-07-24 12:13:56,116 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 12:13:56,117 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 12:13:56,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 12:13:56,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 12:13:56,125 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 12:13:56,126 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:13:56" (1/1) ... [2018-07-24 12:13:56,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8430037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:13:56, skipping insertion in model container [2018-07-24 12:13:56,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:13:56" (1/1) ... [2018-07-24 12:13:56,428 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 12:13:57,113 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:13:57,130 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 12:13:57,410 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:13:57,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:13:57 WrapperNode [2018-07-24 12:13:57,535 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 12:13:57,536 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 12:13:57,536 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 12:13:57,536 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 12:13:57,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:13:57" (1/1) ... [2018-07-24 12:13:57,622 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:13:57" (1/1) ... [2018-07-24 12:13:57,793 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 12:13:57,794 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 12:13:57,794 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 12:13:57,794 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 12:13:58,193 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:13:57" (1/1) ... [2018-07-24 12:13:58,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:13:57" (1/1) ... [2018-07-24 12:13:58,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:13:57" (1/1) ... [2018-07-24 12:13:58,223 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:13:57" (1/1) ... [2018-07-24 12:13:58,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:13:57" (1/1) ... [2018-07-24 12:13:58,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:13:57" (1/1) ... [2018-07-24 12:13:58,390 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:13:57" (1/1) ... [2018-07-24 12:13:58,429 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 12:13:58,429 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 12:13:58,430 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 12:13:58,430 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 12:13:58,431 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:13:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:13:58,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 12:13:58,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 12:13:58,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 12:13:58,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 12:13:58,502 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 12:13:58,502 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 12:13:58,502 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_output2 [2018-07-24 12:13:58,502 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_output2 [2018-07-24 12:13:58,503 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 12:13:58,503 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 12:14:05,062 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 12:14:05,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:14:05 BoogieIcfgContainer [2018-07-24 12:14:05,063 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 12:14:05,064 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 12:14:05,064 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 12:14:05,068 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 12:14:05,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 12:13:56" (1/3) ... [2018-07-24 12:14:05,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d11bb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:14:05, skipping insertion in model container [2018-07-24 12:14:05,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:13:57" (2/3) ... [2018-07-24 12:14:05,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d11bb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:14:05, skipping insertion in model container [2018-07-24 12:14:05,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:14:05" (3/3) ... [2018-07-24 12:14:05,072 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label47_false-unreach-call.c [2018-07-24 12:14:05,082 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 12:14:05,095 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 12:14:05,150 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 12:14:05,151 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 12:14:05,151 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 12:14:05,151 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 12:14:05,151 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 12:14:05,151 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 12:14:05,151 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 12:14:05,151 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 12:14:05,152 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 12:14:05,187 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-07-24 12:14:05,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-24 12:14:05,194 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:14:05,195 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:14:05,195 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 12:14:05,201 INFO L82 PathProgramCache]: Analyzing trace with hash -967744532, now seen corresponding path program 1 times [2018-07-24 12:14:05,203 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:14:05,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:14:05,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:14:05,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:14:05,257 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:14:05,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:14:05,588 WARN L169 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:14:05,691 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 12:14:05,694 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:14:05,694 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 12:14:05,694 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:14:05,700 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:14:05,716 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:14:05,717 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:14:05,719 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 3 states. [2018-07-24 12:14:10,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:14:10,384 INFO L93 Difference]: Finished difference Result 1194 states and 2152 transitions. [2018-07-24 12:14:10,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:14:10,387 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-07-24 12:14:10,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:14:10,414 INFO L225 Difference]: With dead ends: 1194 [2018-07-24 12:14:10,415 INFO L226 Difference]: Without dead ends: 754 [2018-07-24 12:14:10,426 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:14:10,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2018-07-24 12:14:10,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 752. [2018-07-24 12:14:10,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 752 states. [2018-07-24 12:14:10,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1325 transitions. [2018-07-24 12:14:10,533 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1325 transitions. Word has length 16 [2018-07-24 12:14:10,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:14:10,534 INFO L471 AbstractCegarLoop]: Abstraction has 752 states and 1325 transitions. [2018-07-24 12:14:10,534 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:14:10,535 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1325 transitions. [2018-07-24 12:14:10,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-07-24 12:14:10,540 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:14:10,540 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 12:14:10,541 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 12:14:10,541 INFO L82 PathProgramCache]: Analyzing trace with hash -137199729, now seen corresponding path program 1 times [2018-07-24 12:14:10,541 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:14:10,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:14:10,543 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:14:10,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:14:10,543 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:14:10,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:14:10,924 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:14:10,924 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:14:10,925 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-24 12:14:10,925 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:14:10,927 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-24 12:14:10,927 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-24 12:14:10,927 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-07-24 12:14:10,928 INFO L87 Difference]: Start difference. First operand 752 states and 1325 transitions. Second operand 7 states. [2018-07-24 12:14:28,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:14:28,068 INFO L93 Difference]: Finished difference Result 2913 states and 5409 transitions. [2018-07-24 12:14:28,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-24 12:14:28,070 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 90 [2018-07-24 12:14:28,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:14:28,102 INFO L225 Difference]: With dead ends: 2913 [2018-07-24 12:14:28,102 INFO L226 Difference]: Without dead ends: 2167 [2018-07-24 12:14:28,118 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-07-24 12:14:28,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2167 states. [2018-07-24 12:14:28,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2167 to 2110. [2018-07-24 12:14:28,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2110 states. [2018-07-24 12:14:28,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2110 states to 2110 states and 3519 transitions. [2018-07-24 12:14:28,241 INFO L78 Accepts]: Start accepts. Automaton has 2110 states and 3519 transitions. Word has length 90 [2018-07-24 12:14:28,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:14:28,241 INFO L471 AbstractCegarLoop]: Abstraction has 2110 states and 3519 transitions. [2018-07-24 12:14:28,242 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-24 12:14:28,242 INFO L276 IsEmpty]: Start isEmpty. Operand 2110 states and 3519 transitions. [2018-07-24 12:14:28,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-07-24 12:14:28,247 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:14:28,247 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 12:14:28,247 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 12:14:28,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1850310925, now seen corresponding path program 1 times [2018-07-24 12:14:28,248 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:14:28,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:14:28,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:14:28,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:14:28,249 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:14:28,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:14:28,516 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:14:28,517 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:14:28,517 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:14:28,517 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:14:28,518 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:14:28,518 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:14:28,518 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:14:28,519 INFO L87 Difference]: Start difference. First operand 2110 states and 3519 transitions. Second operand 6 states. [2018-07-24 12:14:35,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:14:35,580 INFO L93 Difference]: Finished difference Result 6269 states and 10803 transitions. [2018-07-24 12:14:35,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:14:35,581 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2018-07-24 12:14:35,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:14:35,609 INFO L225 Difference]: With dead ends: 6269 [2018-07-24 12:14:35,609 INFO L226 Difference]: Without dead ends: 4165 [2018-07-24 12:14:35,623 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-07-24 12:14:35,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4165 states. [2018-07-24 12:14:35,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4165 to 4108. [2018-07-24 12:14:35,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4108 states. [2018-07-24 12:14:35,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4108 states to 4108 states and 6157 transitions. [2018-07-24 12:14:35,767 INFO L78 Accepts]: Start accepts. Automaton has 4108 states and 6157 transitions. Word has length 105 [2018-07-24 12:14:35,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:14:35,768 INFO L471 AbstractCegarLoop]: Abstraction has 4108 states and 6157 transitions. [2018-07-24 12:14:35,768 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:14:35,768 INFO L276 IsEmpty]: Start isEmpty. Operand 4108 states and 6157 transitions. [2018-07-24 12:14:35,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-07-24 12:14:35,777 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:14:35,777 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:14:35,777 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 12:14:35,778 INFO L82 PathProgramCache]: Analyzing trace with hash -631665739, now seen corresponding path program 1 times [2018-07-24 12:14:35,778 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:14:35,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:14:35,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:14:35,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:14:35,783 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:14:35,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:14:35,996 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-07-24 12:14:35,997 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:14:35,997 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 12:14:35,997 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:14:35,998 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:14:35,998 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:14:35,998 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:14:35,999 INFO L87 Difference]: Start difference. First operand 4108 states and 6157 transitions. Second operand 3 states. [2018-07-24 12:14:39,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:14:39,683 INFO L93 Difference]: Finished difference Result 9463 states and 14928 transitions. [2018-07-24 12:14:39,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:14:39,683 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 186 [2018-07-24 12:14:39,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:14:39,712 INFO L225 Difference]: With dead ends: 9463 [2018-07-24 12:14:39,712 INFO L226 Difference]: Without dead ends: 5361 [2018-07-24 12:14:39,741 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:14:39,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5361 states. [2018-07-24 12:14:39,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5361 to 5356. [2018-07-24 12:14:39,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5356 states. [2018-07-24 12:14:39,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5356 states to 5356 states and 8208 transitions. [2018-07-24 12:14:39,881 INFO L78 Accepts]: Start accepts. Automaton has 5356 states and 8208 transitions. Word has length 186 [2018-07-24 12:14:39,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:14:39,882 INFO L471 AbstractCegarLoop]: Abstraction has 5356 states and 8208 transitions. [2018-07-24 12:14:39,882 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:14:39,882 INFO L276 IsEmpty]: Start isEmpty. Operand 5356 states and 8208 transitions. [2018-07-24 12:14:39,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-07-24 12:14:39,895 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:14:39,895 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:14:39,895 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 12:14:39,895 INFO L82 PathProgramCache]: Analyzing trace with hash -317547279, now seen corresponding path program 1 times [2018-07-24 12:14:39,896 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:14:39,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:14:39,900 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:14:39,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:14:39,900 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:14:39,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:14:40,458 WARN L169 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2018-07-24 12:14:40,825 WARN L169 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-07-24 12:14:41,032 WARN L169 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-07-24 12:14:41,108 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 18 proven. 76 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:14:41,109 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:14:41,109 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 12:14:41,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:14:41,129 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:14:41,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:14:41,239 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:14:42,255 WARN L169 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-07-24 12:14:42,330 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-07-24 12:14:42,330 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:14:42,703 WARN L169 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-07-24 12:14:43,607 WARN L169 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 27 [2018-07-24 12:14:44,035 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 18 proven. 76 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:14:44,056 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:14:44,057 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-07-24 12:14:44,057 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:14:44,058 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:14:44,058 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:14:44,058 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:14:44,058 INFO L87 Difference]: Start difference. First operand 5356 states and 8208 transitions. Second operand 5 states. [2018-07-24 12:14:56,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:14:56,149 INFO L93 Difference]: Finished difference Result 12892 states and 19942 transitions. [2018-07-24 12:14:56,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:14:56,150 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2018-07-24 12:14:56,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:14:56,195 INFO L225 Difference]: With dead ends: 12892 [2018-07-24 12:14:56,195 INFO L226 Difference]: Without dead ends: 7542 [2018-07-24 12:14:56,221 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 403 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2018-07-24 12:14:56,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7542 states. [2018-07-24 12:14:56,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7542 to 7103. [2018-07-24 12:14:56,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7103 states. [2018-07-24 12:14:56,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7103 states to 7103 states and 10651 transitions. [2018-07-24 12:14:56,425 INFO L78 Accepts]: Start accepts. Automaton has 7103 states and 10651 transitions. Word has length 204 [2018-07-24 12:14:56,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:14:56,426 INFO L471 AbstractCegarLoop]: Abstraction has 7103 states and 10651 transitions. [2018-07-24 12:14:56,426 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:14:56,426 INFO L276 IsEmpty]: Start isEmpty. Operand 7103 states and 10651 transitions. [2018-07-24 12:14:56,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-07-24 12:14:56,436 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:14:56,436 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:14:56,436 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 12:14:56,437 INFO L82 PathProgramCache]: Analyzing trace with hash 129672346, now seen corresponding path program 1 times [2018-07-24 12:14:56,437 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:14:56,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:14:56,438 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:14:56,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:14:56,438 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:14:56,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:14:57,548 WARN L169 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-07-24 12:14:57,837 WARN L169 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-07-24 12:14:58,104 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 39 proven. 241 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:14:58,104 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:14:58,104 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 12:14:58,113 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:14:58,113 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:14:58,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:14:58,235 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:14:58,625 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 249 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-07-24 12:14:58,626 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:14:58,993 WARN L169 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2018-07-24 12:14:59,723 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 37 proven. 243 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:14:59,744 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:14:59,744 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 12:14:59,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:14:59,760 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:15:00,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:15:00,027 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:15:00,255 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 199 proven. 26 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-07-24 12:15:00,256 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:15:00,981 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 37 proven. 243 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:15:00,983 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:15:00,983 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9, 8, 9] total 24 [2018-07-24 12:15:00,983 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:15:00,984 INFO L450 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-24 12:15:00,985 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-24 12:15:00,985 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2018-07-24 12:15:00,986 INFO L87 Difference]: Start difference. First operand 7103 states and 10651 transitions. Second operand 14 states. [2018-07-24 12:15:36,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:15:36,495 INFO L93 Difference]: Finished difference Result 23792 states and 38590 transitions. [2018-07-24 12:15:36,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-24 12:15:36,496 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 300 [2018-07-24 12:15:36,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:15:36,572 INFO L225 Difference]: With dead ends: 23792 [2018-07-24 12:15:36,573 INFO L226 Difference]: Without dead ends: 16049 [2018-07-24 12:15:36,623 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1278 GetRequests, 1215 SyntacticMatches, 6 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 926 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=802, Invalid=2620, Unknown=0, NotChecked=0, Total=3422 [2018-07-24 12:15:36,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16049 states. [2018-07-24 12:15:37,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16049 to 14711. [2018-07-24 12:15:37,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14711 states. [2018-07-24 12:15:37,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14711 states to 14711 states and 22265 transitions. [2018-07-24 12:15:37,061 INFO L78 Accepts]: Start accepts. Automaton has 14711 states and 22265 transitions. Word has length 300 [2018-07-24 12:15:37,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:15:37,062 INFO L471 AbstractCegarLoop]: Abstraction has 14711 states and 22265 transitions. [2018-07-24 12:15:37,062 INFO L472 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-24 12:15:37,062 INFO L276 IsEmpty]: Start isEmpty. Operand 14711 states and 22265 transitions. [2018-07-24 12:15:37,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2018-07-24 12:15:37,080 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:15:37,080 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:15:37,081 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 12:15:37,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1639177649, now seen corresponding path program 1 times [2018-07-24 12:15:37,081 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:15:37,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:15:37,082 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:15:37,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:15:37,082 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:15:37,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:15:38,068 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 39 proven. 252 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:15:38,068 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:15:38,068 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 12:15:38,076 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:15:38,077 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:15:38,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:15:38,217 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:15:38,584 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 260 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-07-24 12:15:38,584 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:15:39,129 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 37 proven. 254 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:15:39,149 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:15:39,150 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 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:15:39,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:15:39,165 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:15:39,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:15:39,491 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:15:40,008 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 210 proven. 26 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-07-24 12:15:40,008 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:15:40,599 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 37 proven. 254 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:15:40,601 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:15:40,601 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9, 8, 9] total 24 [2018-07-24 12:15:40,601 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:15:40,603 INFO L450 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-24 12:15:40,603 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-24 12:15:40,604 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2018-07-24 12:15:40,604 INFO L87 Difference]: Start difference. First operand 14711 states and 22265 transitions. Second operand 14 states. [2018-07-24 12:15:52,541 WARN L169 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 31 [2018-07-24 12:16:12,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:16:12,612 INFO L93 Difference]: Finished difference Result 32376 states and 50034 transitions. [2018-07-24 12:16:12,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-24 12:16:12,612 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 385 [2018-07-24 12:16:12,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:16:12,685 INFO L225 Difference]: With dead ends: 32376 [2018-07-24 12:16:12,685 INFO L226 Difference]: Without dead ends: 16956 [2018-07-24 12:16:12,734 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1623 GetRequests, 1554 SyntacticMatches, 9 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1015 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=889, Invalid=2893, Unknown=0, NotChecked=0, Total=3782 [2018-07-24 12:16:12,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16956 states. [2018-07-24 12:16:13,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16956 to 14693. [2018-07-24 12:16:13,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14693 states. [2018-07-24 12:16:13,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14693 states to 14693 states and 21912 transitions. [2018-07-24 12:16:13,391 INFO L78 Accepts]: Start accepts. Automaton has 14693 states and 21912 transitions. Word has length 385 [2018-07-24 12:16:13,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:16:13,392 INFO L471 AbstractCegarLoop]: Abstraction has 14693 states and 21912 transitions. [2018-07-24 12:16:13,392 INFO L472 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-24 12:16:13,392 INFO L276 IsEmpty]: Start isEmpty. Operand 14693 states and 21912 transitions. [2018-07-24 12:16:13,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2018-07-24 12:16:13,412 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:16:13,413 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:16:13,413 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 12:16:13,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1829651987, now seen corresponding path program 1 times [2018-07-24 12:16:13,416 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:16:13,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:16:13,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:16:13,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:16:13,417 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:16:13,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:16:14,115 WARN L169 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 8 [2018-07-24 12:16:14,658 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 37 proven. 245 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-07-24 12:16:14,658 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:16:14,658 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 12:16:14,666 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:16:14,666 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:16:14,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:16:14,830 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:16:15,548 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 284 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-07-24 12:16:15,548 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:16:16,109 WARN L169 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-07-24 12:16:16,352 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 111 proven. 80 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-07-24 12:16:16,373 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:16:16,374 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 12:16:16,389 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:16:16,389 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:16:16,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:16:16,768 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:16:16,959 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 206 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-07-24 12:16:16,959 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:16:17,711 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 35 proven. 178 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-07-24 12:16:17,714 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:16:17,715 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5, 5, 5] total 17 [2018-07-24 12:16:17,715 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:16:17,716 INFO L450 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-24 12:16:17,717 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-24 12:16:17,717 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2018-07-24 12:16:17,717 INFO L87 Difference]: Start difference. First operand 14693 states and 21912 transitions. Second operand 13 states. [2018-07-24 12:16:17,922 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 21 [2018-07-24 12:16:34,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:16:34,451 INFO L93 Difference]: Finished difference Result 41379 states and 66172 transitions. [2018-07-24 12:16:34,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-07-24 12:16:34,454 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 442 [2018-07-24 12:16:34,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:16:34,539 INFO L225 Difference]: With dead ends: 41379 [2018-07-24 12:16:34,539 INFO L226 Difference]: Without dead ends: 27003 [2018-07-24 12:16:34,605 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1825 GetRequests, 1778 SyntacticMatches, 9 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=408, Invalid=1152, Unknown=0, NotChecked=0, Total=1560 [2018-07-24 12:16:34,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27003 states. [2018-07-24 12:16:35,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27003 to 25773. [2018-07-24 12:16:35,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25773 states. [2018-07-24 12:16:35,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25773 states to 25773 states and 34216 transitions. [2018-07-24 12:16:35,179 INFO L78 Accepts]: Start accepts. Automaton has 25773 states and 34216 transitions. Word has length 442 [2018-07-24 12:16:35,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:16:35,180 INFO L471 AbstractCegarLoop]: Abstraction has 25773 states and 34216 transitions. [2018-07-24 12:16:35,180 INFO L472 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-24 12:16:35,180 INFO L276 IsEmpty]: Start isEmpty. Operand 25773 states and 34216 transitions. [2018-07-24 12:16:35,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2018-07-24 12:16:35,210 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:16:35,211 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:16:35,211 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:16:35,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1610956392, now seen corresponding path program 1 times [2018-07-24 12:16:35,212 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:16:35,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:16:35,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:16:35,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:16:35,213 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:16:35,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:16:36,131 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 268 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-07-24 12:16:36,131 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:16:36,131 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 12:16:36,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:16:36,147 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:16:36,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:16:36,319 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:16:36,602 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 268 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-07-24 12:16:36,603 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:16:37,205 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 268 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-07-24 12:16:37,226 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:16:37,226 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 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:16:37,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:16:37,245 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:16:37,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:16:37,655 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:16:37,768 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 268 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-07-24 12:16:37,768 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:16:38,006 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 268 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-07-24 12:16:38,008 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:16:38,009 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 12:16:38,009 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:16:38,010 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 12:16:38,010 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 12:16:38,010 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:16:38,011 INFO L87 Difference]: Start difference. First operand 25773 states and 34216 transitions. Second operand 9 states. [2018-07-24 12:16:50,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:16:50,351 INFO L93 Difference]: Finished difference Result 51556 states and 69575 transitions. [2018-07-24 12:16:50,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-07-24 12:16:50,352 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 531 [2018-07-24 12:16:50,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:16:50,432 INFO L225 Difference]: With dead ends: 51556 [2018-07-24 12:16:50,432 INFO L226 Difference]: Without dead ends: 26100 [2018-07-24 12:16:50,493 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2152 GetRequests, 2129 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2018-07-24 12:16:50,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26100 states. [2018-07-24 12:16:50,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26100 to 24319. [2018-07-24 12:16:50,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24319 states. [2018-07-24 12:16:50,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24319 states to 24319 states and 29470 transitions. [2018-07-24 12:16:50,964 INFO L78 Accepts]: Start accepts. Automaton has 24319 states and 29470 transitions. Word has length 531 [2018-07-24 12:16:50,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:16:50,965 INFO L471 AbstractCegarLoop]: Abstraction has 24319 states and 29470 transitions. [2018-07-24 12:16:50,965 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 12:16:50,965 INFO L276 IsEmpty]: Start isEmpty. Operand 24319 states and 29470 transitions. [2018-07-24 12:16:50,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2018-07-24 12:16:50,994 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:16:50,995 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:16:50,995 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:16:50,995 INFO L82 PathProgramCache]: Analyzing trace with hash 111804601, now seen corresponding path program 1 times [2018-07-24 12:16:50,995 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:16:50,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:16:50,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:16:50,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:16:50,997 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:16:51,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:16:51,741 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 292 proven. 7 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-07-24 12:16:51,742 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:16:51,742 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:16:51,750 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:16:51,750 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:16:51,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:16:51,944 INFO L273 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-07-24 12:18:10,133 WARN L177 SmtUtils]: Removed 6 from assertion stack [2018-07-24 12:18:10,134 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-07-24 12:18:10,335 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:18:10,335 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 12:18:10,341 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 12:18:10,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 12:18:10 BoogieIcfgContainer [2018-07-24 12:18:10,342 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 12:18:10,342 INFO L168 Benchmark]: Toolchain (without parser) took 254226.26 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.2 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 2.2 GB. Max. memory is 7.1 GB. [2018-07-24 12:18:10,344 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 12:18:10,344 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1416.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 116.3 MB). Peak memory consumption was 116.3 MB. Max. memory is 7.1 GB. [2018-07-24 12:18:10,345 INFO L168 Benchmark]: Boogie Procedure Inliner took 257.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.2 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-07-24 12:18:10,347 INFO L168 Benchmark]: Boogie Preprocessor took 635.18 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 858.3 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 89.8 MB. Max. memory is 7.1 GB. [2018-07-24 12:18:10,348 INFO L168 Benchmark]: RCFGBuilder took 6634.13 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.9 GB in the end (delta: 316.8 MB). Peak memory consumption was 316.8 MB. Max. memory is 7.1 GB. [2018-07-24 12:18:10,349 INFO L168 Benchmark]: TraceAbstraction took 245277.43 ms. Allocated memory was 2.4 GB in the beginning and 3.7 GB in the end (delta: 1.3 GB). Free memory was 1.9 GB in the beginning and 3.2 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-07-24 12:18:10,353 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1416.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 116.3 MB). Peak memory consumption was 116.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 257.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.2 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 635.18 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 858.3 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 89.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6634.13 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.9 GB in the end (delta: 316.8 MB). Peak memory consumption was 316.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 245277.43 ms. Allocated memory was 2.4 GB in the beginning and 3.7 GB in the end (delta: 1.3 GB). Free memory was 1.9 GB in the beginning and 3.2 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 34]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 34). Cancelled while BasicCegarLoop was analyzing trace of length 561 with TraceHistMax 4, while TraceCheckSpWp was constructing forward predicates, while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 5356. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 245.2s OverallTime, 10 OverallIterations, 4 TraceHistogramMax, 142.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2015 SDtfs, 25789 SDslu, 3654 SDs, 0 SdLazy, 46439 SolverSat, 9760 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 122.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7323 GetRequests, 7090 SyntacticMatches, 31 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2489 ImplicationChecksByTransitivity, 12.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25773occurred 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: 2.8s AutomataMinimizationTime, 9 MinimizatonAttempts, 7172 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 16.6s InterpolantComputationTime, 5779 NumberOfCodeBlocks, 5779 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 9272 ConstructedInterpolants, 2 QuantifiedInterpolants, 18032660 SizeOfPredicates, 30 NumberOfNonLiveVariables, 5492 ConjunctsInSsa, 131 ConjunctsInUnsatCore, 27 InterpolantComputations, 5 PerfectInterpolantSequences, 4434/6694 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/Problem15_label47_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_12-18-10-372.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem15_label47_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_12-18-10-372.csv Completed graceful shutdown