java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label47_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 12:31:14,171 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 12:31:14,173 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 12:31:14,191 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 12:31:14,192 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 12:31:14,193 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 12:31:14,196 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 12:31:14,198 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 12:31:14,201 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 12:31:14,202 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 12:31:14,203 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 12:31:14,203 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 12:31:14,204 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 12:31:14,206 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 12:31:14,207 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 12:31:14,208 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 12:31:14,209 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 12:31:14,211 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 12:31:14,213 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 12:31:14,214 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 12:31:14,215 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 12:31:14,217 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 12:31:14,219 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 12:31:14,219 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 12:31:14,220 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 12:31:14,221 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 12:31:14,222 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 12:31:14,223 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 12:31:14,224 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 12:31:14,225 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 12:31:14,225 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 12:31:14,226 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 12:31:14,226 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 12:31:14,226 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 12:31:14,227 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 12:31:14,228 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 12:31:14,229 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-10 12:31:14,244 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 12:31:14,244 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 12:31:14,245 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 12:31:14,245 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 12:31:14,246 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 12:31:14,246 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 12:31:14,246 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 12:31:14,246 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 12:31:14,247 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 12:31:14,247 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 12:31:14,247 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 12:31:14,248 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 12:31:14,248 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 12:31:14,248 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 12:31:14,248 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 12:31:14,248 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 12:31:14,249 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 12:31:14,249 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 12:31:14,249 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 12:31:14,249 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 12:31:14,249 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 12:31:14,249 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 12:31:14,250 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 12:31:14,250 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 12:31:14,250 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 12:31:14,250 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 12:31:14,250 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 12:31:14,251 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 12:31:14,251 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 12:31:14,251 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 12:31:14,251 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 12:31:14,251 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 12:31:14,252 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 12:31:14,294 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 12:31:14,307 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 12:31:14,312 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 12:31:14,314 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 12:31:14,314 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 12:31:14,315 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label47_true-unreach-call.c [2018-09-10 12:31:14,671 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c44ec19d/3685d105c11641bab273519b57aff483/FLAG7a9c07f4b [2018-09-10 12:31:15,106 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 12:31:15,108 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label47_true-unreach-call.c [2018-09-10 12:31:15,141 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c44ec19d/3685d105c11641bab273519b57aff483/FLAG7a9c07f4b [2018-09-10 12:31:15,158 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c44ec19d/3685d105c11641bab273519b57aff483 [2018-09-10 12:31:15,170 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 12:31:15,173 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 12:31:15,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 12:31:15,174 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 12:31:15,182 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 12:31:15,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 12:31:15" (1/1) ... [2018-09-10 12:31:15,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@782dc4bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:31:15, skipping insertion in model container [2018-09-10 12:31:15,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 12:31:15" (1/1) ... [2018-09-10 12:31:15,519 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 12:31:16,304 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 12:31:16,326 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 12:31:16,999 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 12:31:17,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:31:17 WrapperNode [2018-09-10 12:31:17,226 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 12:31:17,227 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 12:31:17,228 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 12:31:17,228 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 12:31:17,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:31:17" (1/1) ... [2018-09-10 12:31:17,320 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:31:17" (1/1) ... [2018-09-10 12:31:17,520 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 12:31:17,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 12:31:17,521 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 12:31:17,521 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 12:31:18,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:31:17" (1/1) ... [2018-09-10 12:31:18,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:31:17" (1/1) ... [2018-09-10 12:31:18,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:31:17" (1/1) ... [2018-09-10 12:31:18,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:31:17" (1/1) ... [2018-09-10 12:31:18,266 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:31:17" (1/1) ... [2018-09-10 12:31:18,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:31:17" (1/1) ... [2018-09-10 12:31:18,370 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:31:17" (1/1) ... [2018-09-10 12:31:18,460 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 12:31:18,461 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 12:31:18,461 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 12:31:18,461 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 12:31:18,462 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:31:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 12:31:18,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 12:31:18,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 12:31:18,541 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 12:31:18,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-10 12:31:18,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 12:31:18,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 12:31:18,541 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 12:31:18,542 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 12:31:18,542 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-10 12:31:18,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-10 12:31:32,656 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 12:31:32,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 12:31:32 BoogieIcfgContainer [2018-09-10 12:31:32,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 12:31:32,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 12:31:32,661 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 12:31:32,665 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 12:31:32,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 12:31:15" (1/3) ... [2018-09-10 12:31:32,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45afa6a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 12:31:32, skipping insertion in model container [2018-09-10 12:31:32,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:31:17" (2/3) ... [2018-09-10 12:31:32,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45afa6a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 12:31:32, skipping insertion in model container [2018-09-10 12:31:32,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 12:31:32" (3/3) ... [2018-09-10 12:31:32,669 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label47_true-unreach-call.c [2018-09-10 12:31:32,680 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 12:31:32,691 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 12:31:32,750 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 12:31:32,751 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 12:31:32,751 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 12:31:32,752 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 12:31:32,752 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 12:31:32,752 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 12:31:32,752 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 12:31:32,752 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 12:31:32,752 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 12:31:32,793 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-09-10 12:31:32,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-09-10 12:31:32,802 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:31:32,803 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:31:32,805 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:31:32,809 INFO L82 PathProgramCache]: Analyzing trace with hash 2017696161, now seen corresponding path program 1 times [2018-09-10 12:31:32,812 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:31:32,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:31:32,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:31:32,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:31:32,863 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:31:32,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:31:33,348 WARN L175 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-09-10 12:31:33,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:31:33,364 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:31:33,365 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 12:31:33,365 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:31:33,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 12:31:33,388 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 12:31:33,389 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 12:31:33,392 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-09-10 12:31:44,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:31:44,847 INFO L93 Difference]: Finished difference Result 2164 states and 4009 transitions. [2018-09-10 12:31:44,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 12:31:44,857 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2018-09-10 12:31:44,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:31:44,901 INFO L225 Difference]: With dead ends: 2164 [2018-09-10 12:31:44,902 INFO L226 Difference]: Without dead ends: 1554 [2018-09-10 12:31:44,912 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-10 12:31:44,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2018-09-10 12:31:45,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1052. [2018-09-10 12:31:45,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2018-09-10 12:31:45,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1882 transitions. [2018-09-10 12:31:45,083 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1882 transitions. Word has length 51 [2018-09-10 12:31:45,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:31:45,083 INFO L480 AbstractCegarLoop]: Abstraction has 1052 states and 1882 transitions. [2018-09-10 12:31:45,084 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 12:31:45,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1882 transitions. [2018-09-10 12:31:45,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-09-10 12:31:45,091 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:31:45,091 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:31:45,091 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:31:45,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1024161550, now seen corresponding path program 1 times [2018-09-10 12:31:45,092 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:31:45,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:31:45,093 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:31:45,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:31:45,094 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:31:45,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:31:45,395 WARN L175 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:31:45,459 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:31:45,460 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:31:45,460 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 12:31:45,460 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:31:45,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:31:45,462 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:31:45,462 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-10 12:31:45,463 INFO L87 Difference]: Start difference. First operand 1052 states and 1882 transitions. Second operand 5 states. [2018-09-10 12:31:55,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:31:55,403 INFO L93 Difference]: Finished difference Result 3031 states and 5537 transitions. [2018-09-10 12:31:55,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:31:55,404 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2018-09-10 12:31:55,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:31:55,421 INFO L225 Difference]: With dead ends: 3031 [2018-09-10 12:31:55,421 INFO L226 Difference]: Without dead ends: 1985 [2018-09-10 12:31:55,426 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-10 12:31:55,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2018-09-10 12:31:55,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1959. [2018-09-10 12:31:55,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2018-09-10 12:31:55,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3239 transitions. [2018-09-10 12:31:55,511 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3239 transitions. Word has length 123 [2018-09-10 12:31:55,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:31:55,512 INFO L480 AbstractCegarLoop]: Abstraction has 1959 states and 3239 transitions. [2018-09-10 12:31:55,512 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:31:55,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3239 transitions. [2018-09-10 12:31:55,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-09-10 12:31:55,521 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:31:55,521 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:31:55,521 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:31:55,524 INFO L82 PathProgramCache]: Analyzing trace with hash -362013423, now seen corresponding path program 1 times [2018-09-10 12:31:55,525 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:31:55,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:31:55,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:31:55,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:31:55,526 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:31:55,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:31:56,172 WARN L175 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2018-09-10 12:31:56,202 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:31:56,202 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:31:56,202 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:31:56,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:31:56,213 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:31:56,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:31:56,303 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:32:03,170 WARN L175 SmtUtils]: Spent 6.41 s on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2018-09-10 12:32:03,388 WARN L175 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 25 [2018-09-10 12:32:03,743 WARN L175 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-10 12:32:03,828 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:32:03,829 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:32:04,383 WARN L175 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-09-10 12:32:04,880 WARN L175 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-09-10 12:32:04,891 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-09-10 12:32:08,078 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 29 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:32:08,114 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:32:08,114 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:32:08,149 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:32:08,150 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:32:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:32:08,309 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:32:08,646 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:32:08,647 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:32:13,349 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:32:13,352 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-09-10 12:32:13,352 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7, 7, 6] total 20 [2018-09-10 12:32:13,353 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:32:13,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:32:13,353 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:32:13,354 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=279, Unknown=3, NotChecked=0, Total=380 [2018-09-10 12:32:13,354 INFO L87 Difference]: Start difference. First operand 1959 states and 3239 transitions. Second operand 6 states. [2018-09-10 12:32:32,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:32:32,461 INFO L93 Difference]: Finished difference Result 7521 states and 12913 transitions. [2018-09-10 12:32:32,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 12:32:32,462 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2018-09-10 12:32:32,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:32:32,501 INFO L225 Difference]: With dead ends: 7521 [2018-09-10 12:32:32,501 INFO L226 Difference]: Without dead ends: 5568 [2018-09-10 12:32:32,517 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 511 GetRequests, 488 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 16.2s TimeCoverageRelationStatistics Valid=98, Invalid=279, Unknown=3, NotChecked=0, Total=380 [2018-09-10 12:32:32,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5568 states. [2018-09-10 12:32:32,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5568 to 5558. [2018-09-10 12:32:32,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5558 states. [2018-09-10 12:32:32,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5558 states to 5558 states and 9360 transitions. [2018-09-10 12:32:32,681 INFO L78 Accepts]: Start accepts. Automaton has 5558 states and 9360 transitions. Word has length 126 [2018-09-10 12:32:32,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:32:32,682 INFO L480 AbstractCegarLoop]: Abstraction has 5558 states and 9360 transitions. [2018-09-10 12:32:32,682 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:32:32,682 INFO L276 IsEmpty]: Start isEmpty. Operand 5558 states and 9360 transitions. [2018-09-10 12:32:32,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-09-10 12:32:32,686 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:32:32,686 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:32:32,686 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:32:32,687 INFO L82 PathProgramCache]: Analyzing trace with hash -375548014, now seen corresponding path program 1 times [2018-09-10 12:32:32,687 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:32:32,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:32:32,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:32:32,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:32:32,688 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:32:32,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:32:33,020 WARN L175 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:32:33,572 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 38 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:32:33,572 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:32:33,572 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:32:33,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:32:33,580 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:32:33,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:32:33,645 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:32:33,684 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:32:33,684 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:32:33,725 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:32:33,746 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 12:32:33,747 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-09-10 12:32:33,747 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:32:33,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:32:33,747 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:32:33,748 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-10 12:32:33,748 INFO L87 Difference]: Start difference. First operand 5558 states and 9360 transitions. Second operand 3 states. [2018-09-10 12:32:38,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:32:38,372 INFO L93 Difference]: Finished difference Result 13731 states and 23004 transitions. [2018-09-10 12:32:38,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:32:38,376 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 139 [2018-09-10 12:32:38,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:32:38,421 INFO L225 Difference]: With dead ends: 13731 [2018-09-10 12:32:38,421 INFO L226 Difference]: Without dead ends: 8179 [2018-09-10 12:32:38,455 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 277 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-10 12:32:38,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8179 states. [2018-09-10 12:32:38,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8179 to 8178. [2018-09-10 12:32:38,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8178 states. [2018-09-10 12:32:38,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8178 states to 8178 states and 12783 transitions. [2018-09-10 12:32:38,670 INFO L78 Accepts]: Start accepts. Automaton has 8178 states and 12783 transitions. Word has length 139 [2018-09-10 12:32:38,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:32:38,670 INFO L480 AbstractCegarLoop]: Abstraction has 8178 states and 12783 transitions. [2018-09-10 12:32:38,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:32:38,671 INFO L276 IsEmpty]: Start isEmpty. Operand 8178 states and 12783 transitions. [2018-09-10 12:32:38,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-09-10 12:32:38,683 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:32:38,683 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:32:38,683 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:32:38,684 INFO L82 PathProgramCache]: Analyzing trace with hash 539496982, now seen corresponding path program 1 times [2018-09-10 12:32:38,684 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:32:38,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:32:38,685 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:32:38,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:32:38,685 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:32:38,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:32:39,039 WARN L175 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:32:39,338 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 89 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-10 12:32:39,338 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:32:39,338 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:32:39,345 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:32:39,346 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:32:39,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:32:39,440 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:32:39,641 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 161 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:32:39,641 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:32:39,852 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 161 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:32:39,873 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:32:39,873 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:32:39,888 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:32:39,888 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:32:40,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:32:40,102 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:32:40,259 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-10 12:32:40,259 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:32:40,436 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-10 12:32:40,438 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-09-10 12:32:40,438 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 12 [2018-09-10 12:32:40,438 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:32:40,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:32:40,439 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:32:40,439 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-10 12:32:40,440 INFO L87 Difference]: Start difference. First operand 8178 states and 12783 transitions. Second operand 5 states. [2018-09-10 12:32:45,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:32:45,433 INFO L93 Difference]: Finished difference Result 16411 states and 25718 transitions. [2018-09-10 12:32:45,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 12:32:45,434 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 224 [2018-09-10 12:32:45,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:32:45,481 INFO L225 Difference]: With dead ends: 16411 [2018-09-10 12:32:45,482 INFO L226 Difference]: Without dead ends: 8239 [2018-09-10 12:32:45,511 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 904 GetRequests, 884 SyntacticMatches, 9 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-09-10 12:32:45,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8239 states. [2018-09-10 12:32:45,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8239 to 8237. [2018-09-10 12:32:45,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8237 states. [2018-09-10 12:32:45,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8237 states to 8237 states and 10732 transitions. [2018-09-10 12:32:45,683 INFO L78 Accepts]: Start accepts. Automaton has 8237 states and 10732 transitions. Word has length 224 [2018-09-10 12:32:45,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:32:45,684 INFO L480 AbstractCegarLoop]: Abstraction has 8237 states and 10732 transitions. [2018-09-10 12:32:45,684 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:32:45,691 INFO L276 IsEmpty]: Start isEmpty. Operand 8237 states and 10732 transitions. [2018-09-10 12:32:45,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-09-10 12:32:45,701 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:32:45,701 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:32:45,701 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:32:45,702 INFO L82 PathProgramCache]: Analyzing trace with hash -804013616, now seen corresponding path program 1 times [2018-09-10 12:32:45,702 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:32:45,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:32:45,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:32:45,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:32:45,704 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:32:45,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:32:46,246 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 93 proven. 81 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-09-10 12:32:46,246 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:32:46,247 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:32:46,255 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:32:46,255 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:32:46,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:32:46,382 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:32:46,555 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-09-10 12:32:46,555 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:32:47,286 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 93 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:32:47,306 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:32:47,306 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:32:47,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:32:47,324 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:32:47,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:32:47,596 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:32:47,894 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-09-10 12:32:47,894 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:32:48,210 WARN L175 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-09-10 12:32:48,712 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 93 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:32:48,714 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:32:48,715 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8, 7, 8] total 15 [2018-09-10 12:32:48,715 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:32:48,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-10 12:32:48,716 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-10 12:32:48,716 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-09-10 12:32:48,717 INFO L87 Difference]: Start difference. First operand 8237 states and 10732 transitions. Second operand 10 states. [2018-09-10 12:33:13,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:33:13,603 INFO L93 Difference]: Finished difference Result 30231 states and 40865 transitions. [2018-09-10 12:33:13,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-10 12:33:13,604 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 305 [2018-09-10 12:33:13,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:33:13,685 INFO L225 Difference]: With dead ends: 30231 [2018-09-10 12:33:13,686 INFO L226 Difference]: Without dead ends: 22000 [2018-09-10 12:33:13,719 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1240 GetRequests, 1208 SyntacticMatches, 7 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=212, Invalid=490, Unknown=0, NotChecked=0, Total=702 [2018-09-10 12:33:13,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22000 states. [2018-09-10 12:33:14,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22000 to 18074. [2018-09-10 12:33:14,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18074 states. [2018-09-10 12:33:14,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18074 states to 18074 states and 22438 transitions. [2018-09-10 12:33:14,168 INFO L78 Accepts]: Start accepts. Automaton has 18074 states and 22438 transitions. Word has length 305 [2018-09-10 12:33:14,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:33:14,168 INFO L480 AbstractCegarLoop]: Abstraction has 18074 states and 22438 transitions. [2018-09-10 12:33:14,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-10 12:33:14,169 INFO L276 IsEmpty]: Start isEmpty. Operand 18074 states and 22438 transitions. [2018-09-10 12:33:14,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-09-10 12:33:14,192 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:33:14,192 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:33:14,193 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:33:14,193 INFO L82 PathProgramCache]: Analyzing trace with hash -2074439196, now seen corresponding path program 1 times [2018-09-10 12:33:14,193 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:33:14,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:33:14,195 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:33:14,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:33:14,195 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:33:14,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:33:14,970 WARN L175 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-09-10 12:33:15,416 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 138 proven. 240 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-09-10 12:33:15,416 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:33:15,416 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:33:15,425 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:33:15,425 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:33:15,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:33:15,576 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:33:16,303 WARN L175 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-09-10 12:33:22,533 WARN L175 SmtUtils]: Spent 6.19 s on a formula simplification. DAG size of input: 80 DAG size of output: 21 [2018-09-10 12:33:22,885 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 283 proven. 55 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-09-10 12:33:22,885 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:33:23,210 WARN L175 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2018-09-10 12:33:25,429 WARN L175 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 15 [2018-09-10 12:33:26,150 WARN L175 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 24 [2018-09-10 12:33:26,818 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 142 proven. 264 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 12:33:26,839 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:33:26,840 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:33:26,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:33:26,857 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:33:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:33:27,216 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:33:27,373 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 279 proven. 87 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-09-10 12:33:27,373 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:33:27,894 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 142 proven. 264 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 12:33:27,896 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:33:27,897 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9, 8, 8] total 24 [2018-09-10 12:33:27,897 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:33:27,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-10 12:33:27,898 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-10 12:33:27,900 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=398, Unknown=0, NotChecked=0, Total=552 [2018-09-10 12:33:27,900 INFO L87 Difference]: Start difference. First operand 18074 states and 22438 transitions. Second operand 13 states. [2018-09-10 12:34:37,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:34:37,547 INFO L93 Difference]: Finished difference Result 88002 states and 132994 transitions. [2018-09-10 12:34:37,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-09-10 12:34:37,548 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 408 [2018-09-10 12:34:37,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:34:38,112 INFO L225 Difference]: With dead ends: 88002 [2018-09-10 12:34:38,113 INFO L226 Difference]: Without dead ends: 70368 [2018-09-10 12:34:38,356 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1740 GetRequests, 1657 SyntacticMatches, 4 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 1834 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=1413, Invalid=5067, Unknown=0, NotChecked=0, Total=6480 [2018-09-10 12:34:38,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70368 states. [2018-09-10 12:34:40,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70368 to 63521. [2018-09-10 12:34:40,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63521 states. [2018-09-10 12:34:41,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63521 states to 63521 states and 89409 transitions. [2018-09-10 12:34:41,481 INFO L78 Accepts]: Start accepts. Automaton has 63521 states and 89409 transitions. Word has length 408 [2018-09-10 12:34:41,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:34:41,482 INFO L480 AbstractCegarLoop]: Abstraction has 63521 states and 89409 transitions. [2018-09-10 12:34:41,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-10 12:34:41,482 INFO L276 IsEmpty]: Start isEmpty. Operand 63521 states and 89409 transitions. [2018-09-10 12:34:41,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2018-09-10 12:34:41,542 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:34:41,543 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:34:41,543 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:34:41,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1552027596, now seen corresponding path program 1 times [2018-09-10 12:34:41,544 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:34:41,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:34:41,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:34:41,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:34:41,545 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:34:41,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:34:42,111 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 140 proven. 263 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-09-10 12:34:42,112 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:34:42,112 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-10 12:34:42,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:34:42,121 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:34:42,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:34:42,278 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:34:42,461 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2018-09-10 12:34:42,461 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:34:42,938 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 132 proven. 184 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-09-10 12:34:42,959 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 12:34:42,959 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 5] total 13 [2018-09-10 12:34:42,959 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:34:42,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:34:42,960 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:34:42,960 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-09-10 12:34:42,961 INFO L87 Difference]: Start difference. First operand 63521 states and 89409 transitions. Second operand 5 states. [2018-09-10 12:34:53,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:34:53,523 INFO L93 Difference]: Finished difference Result 129039 states and 178285 transitions. [2018-09-10 12:34:53,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:34:53,524 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 411 [2018-09-10 12:34:53,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:34:53,856 INFO L225 Difference]: With dead ends: 129039 [2018-09-10 12:34:53,857 INFO L226 Difference]: Without dead ends: 65977 [2018-09-10 12:34:54,129 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 833 GetRequests, 820 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2018-09-10 12:34:54,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65977 states. [2018-09-10 12:34:56,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65977 to 63272. [2018-09-10 12:34:56,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63272 states. [2018-09-10 12:34:56,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63272 states to 63272 states and 84199 transitions. [2018-09-10 12:34:56,551 INFO L78 Accepts]: Start accepts. Automaton has 63272 states and 84199 transitions. Word has length 411 [2018-09-10 12:34:56,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:34:56,551 INFO L480 AbstractCegarLoop]: Abstraction has 63272 states and 84199 transitions. [2018-09-10 12:34:56,551 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:34:56,552 INFO L276 IsEmpty]: Start isEmpty. Operand 63272 states and 84199 transitions. [2018-09-10 12:34:56,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-09-10 12:34:56,587 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:34:56,587 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:34:56,588 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:34:56,588 INFO L82 PathProgramCache]: Analyzing trace with hash 520169263, now seen corresponding path program 1 times [2018-09-10 12:34:56,588 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:34:56,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:34:56,589 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:34:56,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:34:56,589 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:34:56,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:34:57,463 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 138 proven. 192 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-09-10 12:34:57,463 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:34:57,463 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:34:57,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:34:57,481 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:34:57,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:34:57,638 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:35:01,960 WARN L175 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 80 DAG size of output: 21 Received shutdown request... [2018-09-10 12:35:20,339 WARN L175 SmtUtils]: Spent 18.20 s on a formula simplification that was a NOOP. DAG size: 44 [2018-09-10 12:35:20,340 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-09-10 12:35:20,541 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:35:20,542 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 12:35:20,547 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 12:35:20,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 12:35:20 BoogieIcfgContainer [2018-09-10 12:35:20,547 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 12:35:20,548 INFO L168 Benchmark]: Toolchain (without parser) took 245377.86 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-09-10 12:35:20,549 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-10 12:35:20,550 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2052.48 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. [2018-09-10 12:35:20,550 INFO L168 Benchmark]: Boogie Procedure Inliner took 293.42 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-09-10 12:35:20,551 INFO L168 Benchmark]: Boogie Preprocessor took 939.34 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 925.4 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 123.6 MB. Max. memory is 7.1 GB. [2018-09-10 12:35:20,552 INFO L168 Benchmark]: RCFGBuilder took 14196.47 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 497.7 MB). Peak memory consumption was 497.7 MB. Max. memory is 7.1 GB. [2018-09-10 12:35:20,553 INFO L168 Benchmark]: TraceAbstraction took 227889.65 ms. Allocated memory was 2.5 GB in the beginning and 3.8 GB in the end (delta: 1.3 GB). Free memory was 1.8 GB in the beginning and 2.5 GB in the end (delta: -619.8 MB). Peak memory consumption was 684.1 MB. Max. memory is 7.1 GB. [2018-09-10 12:35:20,558 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2052.48 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 293.42 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 939.34 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 925.4 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 123.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 14196.47 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 497.7 MB). Peak memory consumption was 497.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 227889.65 ms. Allocated memory was 2.5 GB in the beginning and 3.8 GB in the end (delta: 1.3 GB). Free memory was 1.8 GB in the beginning and 2.5 GB in the end (delta: -619.8 MB). Peak memory consumption was 684.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 140]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 140). Cancelled while BasicCegarLoop was analyzing trace of length 427 with TraceHistMax 4, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 4 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 227.8s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 157.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2481 SDtfs, 23147 SDslu, 3676 SDs, 0 SdLazy, 47791 SolverSat, 8744 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 136.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5530 GetRequests, 5340 SyntacticMatches, 30 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 2251 ImplicationChecksByTransitivity, 32.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63521occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 6.7s AutomataMinimizationTime, 8 MinimizatonAttempts, 14019 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 36.7s InterpolantComputationTime, 4463 NumberOfCodeBlocks, 4463 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 7111 ConstructedInterpolants, 389 QuantifiedInterpolants, 11596277 SizeOfPredicates, 33 NumberOfNonLiveVariables, 4596 ConjunctsInSsa, 112 ConjunctsInUnsatCore, 28 InterpolantComputations, 7 PerfectInterpolantSequences, 3606/5376 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/Problem17_label47_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_12-35-20-574.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem17_label47_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_12-35-20-574.csv Completed graceful shutdown