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/Problem15_label16_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 12:09:03,031 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 12:09:03,033 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 12:09:03,045 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 12:09:03,046 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 12:09:03,047 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 12:09:03,048 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 12:09:03,050 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 12:09:03,052 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 12:09:03,053 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 12:09:03,054 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 12:09:03,054 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 12:09:03,055 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 12:09:03,056 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 12:09:03,058 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 12:09:03,059 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 12:09:03,059 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 12:09:03,061 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 12:09:03,063 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 12:09:03,065 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 12:09:03,066 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 12:09:03,068 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 12:09:03,070 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 12:09:03,071 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 12:09:03,071 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 12:09:03,072 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 12:09:03,073 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 12:09:03,074 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 12:09:03,075 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 12:09:03,076 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 12:09:03,076 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 12:09:03,077 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 12:09:03,077 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 12:09:03,077 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 12:09:03,079 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 12:09:03,079 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 12:09:03,080 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 12:09:03,096 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 12:09:03,096 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 12:09:03,097 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 12:09:03,097 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 12:09:03,098 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 12:09:03,098 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 12:09:03,098 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 12:09:03,098 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 12:09:03,099 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 12:09:03,099 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 12:09:03,099 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 12:09:03,100 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 12:09:03,100 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 12:09:03,100 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 12:09:03,100 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 12:09:03,101 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 12:09:03,101 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 12:09:03,101 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 12:09:03,101 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 12:09:03,102 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 12:09:03,102 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 12:09:03,102 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 12:09:03,102 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 12:09:03,102 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 12:09:03,103 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 12:09:03,103 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 12:09:03,103 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 12:09:03,103 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 12:09:03,103 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 12:09:03,104 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 12:09:03,104 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 12:09:03,104 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 12:09:03,104 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 12:09:03,176 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 12:09:03,194 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 12:09:03,198 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 12:09:03,199 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 12:09:03,200 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 12:09:03,201 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label16_true-unreach-call.c [2018-09-10 12:09:03,549 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b06e1bb5e/e4a8fd9379ba4f579cddee45f16a456b/FLAG4a3e28832 [2018-09-10 12:09:03,908 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 12:09:03,909 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label16_true-unreach-call.c [2018-09-10 12:09:03,937 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b06e1bb5e/e4a8fd9379ba4f579cddee45f16a456b/FLAG4a3e28832 [2018-09-10 12:09:03,959 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b06e1bb5e/e4a8fd9379ba4f579cddee45f16a456b [2018-09-10 12:09:03,973 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 12:09:03,979 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 12:09:03,981 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 12:09:03,981 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 12:09:03,993 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 12:09:03,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 12:09:03" (1/1) ... [2018-09-10 12:09:03,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a4c6457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:09:03, skipping insertion in model container [2018-09-10 12:09:03,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 12:09:03" (1/1) ... [2018-09-10 12:09:04,306 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 12:09:04,909 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 12:09:04,931 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 12:09:05,222 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 12:09:05,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:09:05 WrapperNode [2018-09-10 12:09:05,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 12:09:05,382 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 12:09:05,382 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 12:09:05,382 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 12:09:05,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:09:05" (1/1) ... [2018-09-10 12:09:05,452 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:09:05" (1/1) ... [2018-09-10 12:09:05,603 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 12:09:05,603 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 12:09:05,603 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 12:09:05,604 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 12:09:06,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:09:05" (1/1) ... [2018-09-10 12:09:06,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:09:05" (1/1) ... [2018-09-10 12:09:06,050 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:09:05" (1/1) ... [2018-09-10 12:09:06,051 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:09:05" (1/1) ... [2018-09-10 12:09:06,152 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:09:05" (1/1) ... [2018-09-10 12:09:06,168 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:09:05" (1/1) ... [2018-09-10 12:09:06,204 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:09:05" (1/1) ... [2018-09-10 12:09:06,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 12:09:06,230 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 12:09:06,230 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 12:09:06,230 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 12:09:06,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:09:05" (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 12:09:06,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 12:09:06,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 12:09:06,303 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 12:09:06,303 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 12:09:06,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 12:09:06,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 12:09:06,304 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 12:09:06,304 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 12:09:06,305 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 12:09:06,305 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 12:09:15,819 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 12:09:15,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 12:09:15 BoogieIcfgContainer [2018-09-10 12:09:15,820 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 12:09:15,821 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 12:09:15,822 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 12:09:15,825 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 12:09:15,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 12:09:03" (1/3) ... [2018-09-10 12:09:15,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b8a138e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 12:09:15, skipping insertion in model container [2018-09-10 12:09:15,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 12:09:05" (2/3) ... [2018-09-10 12:09:15,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b8a138e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 12:09:15, skipping insertion in model container [2018-09-10 12:09:15,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 12:09:15" (3/3) ... [2018-09-10 12:09:15,829 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label16_true-unreach-call.c [2018-09-10 12:09:15,837 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 12:09:15,846 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 12:09:15,895 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 12:09:15,896 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 12:09:15,896 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 12:09:15,897 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 12:09:15,897 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 12:09:15,897 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 12:09:15,897 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 12:09:15,897 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 12:09:15,897 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 12:09:15,931 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-09-10 12:09:15,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-09-10 12:09:15,942 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:09:15,944 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:09:15,945 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 12:09:15,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1238284937, now seen corresponding path program 1 times [2018-09-10 12:09:15,954 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:09:16,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:09:16,008 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:09:16,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:09:16,008 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:09:16,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:09:16,435 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 12:09:16,437 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:09:16,438 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 12:09:16,438 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:09:16,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:09:16,462 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:09:16,463 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 12:09:16,466 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 3 states. [2018-09-10 12:09:21,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:09:21,977 INFO L93 Difference]: Finished difference Result 1193 states and 2149 transitions. [2018-09-10 12:09:21,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:09:21,979 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2018-09-10 12:09:21,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:09:22,002 INFO L225 Difference]: With dead ends: 1193 [2018-09-10 12:09:22,002 INFO L226 Difference]: Without dead ends: 753 [2018-09-10 12:09:22,014 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 12:09:22,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2018-09-10 12:09:22,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 753. [2018-09-10 12:09:22,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2018-09-10 12:09:22,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1315 transitions. [2018-09-10 12:09:22,123 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1315 transitions. Word has length 69 [2018-09-10 12:09:22,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:09:22,124 INFO L480 AbstractCegarLoop]: Abstraction has 753 states and 1315 transitions. [2018-09-10 12:09:22,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:09:22,125 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1315 transitions. [2018-09-10 12:09:22,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-09-10 12:09:22,134 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:09:22,135 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, 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] [2018-09-10 12:09:22,135 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 12:09:22,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1688291000, now seen corresponding path program 1 times [2018-09-10 12:09:22,136 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:09:22,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:09:22,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:09:22,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:09:22,139 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:09:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:09:22,546 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:09:22,547 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:09:22,547 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 12:09:22,547 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:09:22,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:09:22,549 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:09:22,549 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-10 12:09:22,550 INFO L87 Difference]: Start difference. First operand 753 states and 1315 transitions. Second operand 5 states. [2018-09-10 12:09:39,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:09:39,906 INFO L93 Difference]: Finished difference Result 2822 states and 5078 transitions. [2018-09-10 12:09:39,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 12:09:39,907 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2018-09-10 12:09:39,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:09:39,921 INFO L225 Difference]: With dead ends: 2822 [2018-09-10 12:09:39,922 INFO L226 Difference]: Without dead ends: 2075 [2018-09-10 12:09:39,929 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-10 12:09:39,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2075 states. [2018-09-10 12:09:40,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2075 to 2048. [2018-09-10 12:09:40,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2048 states. [2018-09-10 12:09:40,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2048 states to 2048 states and 3214 transitions. [2018-09-10 12:09:40,016 INFO L78 Accepts]: Start accepts. Automaton has 2048 states and 3214 transitions. Word has length 149 [2018-09-10 12:09:40,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:09:40,016 INFO L480 AbstractCegarLoop]: Abstraction has 2048 states and 3214 transitions. [2018-09-10 12:09:40,016 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:09:40,017 INFO L276 IsEmpty]: Start isEmpty. Operand 2048 states and 3214 transitions. [2018-09-10 12:09:40,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-09-10 12:09:40,022 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:09:40,022 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, 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] [2018-09-10 12:09:40,022 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 12:09:40,023 INFO L82 PathProgramCache]: Analyzing trace with hash 508672448, now seen corresponding path program 1 times [2018-09-10 12:09:40,023 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:09:40,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:09:40,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:09:40,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:09:40,025 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:09:40,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:09:40,469 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:09:40,469 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:09:40,469 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 12:09:40,470 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:09:40,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:09:40,470 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:09:40,471 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-10 12:09:40,471 INFO L87 Difference]: Start difference. First operand 2048 states and 3214 transitions. Second operand 6 states. [2018-09-10 12:09:51,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:09:51,052 INFO L93 Difference]: Finished difference Result 6103 states and 9718 transitions. [2018-09-10 12:09:51,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-10 12:09:51,054 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 153 [2018-09-10 12:09:51,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:09:51,084 INFO L225 Difference]: With dead ends: 6103 [2018-09-10 12:09:51,084 INFO L226 Difference]: Without dead ends: 4061 [2018-09-10 12:09:51,096 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-10 12:09:51,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4061 states. [2018-09-10 12:09:51,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4061 to 3982. [2018-09-10 12:09:51,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3982 states. [2018-09-10 12:09:51,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3982 states to 3982 states and 5615 transitions. [2018-09-10 12:09:51,211 INFO L78 Accepts]: Start accepts. Automaton has 3982 states and 5615 transitions. Word has length 153 [2018-09-10 12:09:51,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:09:51,212 INFO L480 AbstractCegarLoop]: Abstraction has 3982 states and 5615 transitions. [2018-09-10 12:09:51,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:09:51,212 INFO L276 IsEmpty]: Start isEmpty. Operand 3982 states and 5615 transitions. [2018-09-10 12:09:51,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-09-10 12:09:51,219 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:09:51,219 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:09:51,220 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 12:09:51,220 INFO L82 PathProgramCache]: Analyzing trace with hash 149447035, now seen corresponding path program 1 times [2018-09-10 12:09:51,220 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:09:51,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:09:51,221 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:09:51,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:09:51,221 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:09:51,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:09:51,794 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 202 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:09:51,794 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:09:51,795 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 12:09:51,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:09:51,813 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:09:51,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:09:51,942 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:09:52,323 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 202 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:09:52,324 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:09:52,713 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 202 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:09:52,735 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:09:52,735 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 12:09:52,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:09:52,753 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:09:52,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:09:52,962 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:09:53,123 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 202 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:09:53,123 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:09:53,634 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 202 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 12:09:53,638 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:09:53,639 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-10 12:09:53,639 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:09:53,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 12:09:53,641 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 12:09:53,641 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-10 12:09:53,644 INFO L87 Difference]: Start difference. First operand 3982 states and 5615 transitions. Second operand 9 states. [2018-09-10 12:10:05,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:10:05,131 INFO L93 Difference]: Finished difference Result 11936 states and 18431 transitions. [2018-09-10 12:10:05,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-10 12:10:05,132 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 230 [2018-09-10 12:10:05,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:10:05,195 INFO L225 Difference]: With dead ends: 11936 [2018-09-10 12:10:05,195 INFO L226 Difference]: Without dead ends: 7960 [2018-09-10 12:10:05,258 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 942 GetRequests, 920 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2018-09-10 12:10:05,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7960 states. [2018-09-10 12:10:05,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7960 to 7781. [2018-09-10 12:10:05,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7781 states. [2018-09-10 12:10:05,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7781 states to 7781 states and 9963 transitions. [2018-09-10 12:10:05,525 INFO L78 Accepts]: Start accepts. Automaton has 7781 states and 9963 transitions. Word has length 230 [2018-09-10 12:10:05,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:10:05,526 INFO L480 AbstractCegarLoop]: Abstraction has 7781 states and 9963 transitions. [2018-09-10 12:10:05,526 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 12:10:05,526 INFO L276 IsEmpty]: Start isEmpty. Operand 7781 states and 9963 transitions. [2018-09-10 12:10:05,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-09-10 12:10:05,549 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:10:05,550 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:10:05,550 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 12:10:05,550 INFO L82 PathProgramCache]: Analyzing trace with hash -714831547, now seen corresponding path program 1 times [2018-09-10 12:10:05,550 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:10:05,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:10:05,551 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:10:05,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:10:05,552 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:10:05,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:10:05,892 WARN L175 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-10 12:10:06,334 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 124 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 12:10:06,335 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:10:06,335 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 12:10:06,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:10:06,355 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:10:06,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:10:06,456 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:10:06,661 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-09-10 12:10:06,661 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:10:06,921 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 124 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 12:10:06,943 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 12:10:06,943 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-10 12:10:06,943 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:10:06,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:10:06,944 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:10:06,944 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-10 12:10:06,944 INFO L87 Difference]: Start difference. First operand 7781 states and 9963 transitions. Second operand 5 states. [2018-09-10 12:10:14,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:10:14,321 INFO L93 Difference]: Finished difference Result 19081 states and 25067 transitions. [2018-09-10 12:10:14,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 12:10:14,324 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 236 [2018-09-10 12:10:14,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:10:14,397 INFO L225 Difference]: With dead ends: 19081 [2018-09-10 12:10:14,397 INFO L226 Difference]: Without dead ends: 11306 [2018-09-10 12:10:14,435 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 467 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-09-10 12:10:14,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11306 states. [2018-09-10 12:10:14,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11306 to 10880. [2018-09-10 12:10:14,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10880 states. [2018-09-10 12:10:14,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10880 states to 10880 states and 13707 transitions. [2018-09-10 12:10:14,739 INFO L78 Accepts]: Start accepts. Automaton has 10880 states and 13707 transitions. Word has length 236 [2018-09-10 12:10:14,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:10:14,740 INFO L480 AbstractCegarLoop]: Abstraction has 10880 states and 13707 transitions. [2018-09-10 12:10:14,741 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:10:14,741 INFO L276 IsEmpty]: Start isEmpty. Operand 10880 states and 13707 transitions. [2018-09-10 12:10:14,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2018-09-10 12:10:14,793 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:10:14,793 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, 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, 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] [2018-09-10 12:10:14,794 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 12:10:14,794 INFO L82 PathProgramCache]: Analyzing trace with hash 590014869, now seen corresponding path program 1 times [2018-09-10 12:10:14,794 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:10:14,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:10:14,795 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:10:14,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:10:14,795 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:10:14,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:10:15,599 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 274 proven. 79 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-09-10 12:10:15,600 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:10:15,600 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 12:10:15,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:10:15,618 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:10:15,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:10:15,796 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:10:16,141 WARN L175 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 3 [2018-09-10 12:10:16,417 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 284 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2018-09-10 12:10:16,417 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:10:16,792 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 194 proven. 2 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2018-09-10 12:10:16,821 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 12:10:16,821 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 3] total 7 [2018-09-10 12:10:16,821 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:10:16,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:10:16,822 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:10:16,822 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-09-10 12:10:16,823 INFO L87 Difference]: Start difference. First operand 10880 states and 13707 transitions. Second operand 3 states. [2018-09-10 12:10:23,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:10:23,651 INFO L93 Difference]: Finished difference Result 24995 states and 32924 transitions. [2018-09-10 12:10:23,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:10:23,655 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 437 [2018-09-10 12:10:23,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:10:23,726 INFO L225 Difference]: With dead ends: 24995 [2018-09-10 12:10:23,726 INFO L226 Difference]: Without dead ends: 14126 [2018-09-10 12:10:23,768 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 879 GetRequests, 874 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-09-10 12:10:23,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14126 states. [2018-09-10 12:10:24,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14126 to 14107. [2018-09-10 12:10:24,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14107 states. [2018-09-10 12:10:24,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14107 states to 14107 states and 18436 transitions. [2018-09-10 12:10:24,120 INFO L78 Accepts]: Start accepts. Automaton has 14107 states and 18436 transitions. Word has length 437 [2018-09-10 12:10:24,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:10:24,122 INFO L480 AbstractCegarLoop]: Abstraction has 14107 states and 18436 transitions. [2018-09-10 12:10:24,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:10:24,122 INFO L276 IsEmpty]: Start isEmpty. Operand 14107 states and 18436 transitions. [2018-09-10 12:10:24,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2018-09-10 12:10:24,174 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:10:24,175 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, 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, 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] [2018-09-10 12:10:24,175 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 12:10:24,176 INFO L82 PathProgramCache]: Analyzing trace with hash -458848555, now seen corresponding path program 1 times [2018-09-10 12:10:24,176 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:10:24,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:10:24,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:10:24,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:10:24,177 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:10:24,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:10:25,135 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 274 proven. 82 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-09-10 12:10:25,136 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:10:25,136 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:10:25,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:10:25,151 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:10:25,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:10:25,300 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:10:25,502 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 372 proven. 2 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-09-10 12:10:25,502 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:10:25,712 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 274 proven. 82 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-09-10 12:10:25,732 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:10:25,732 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 7 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 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:10:25,749 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:10:25,749 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:10:26,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:10:26,078 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:10:26,296 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 372 proven. 2 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-09-10 12:10:26,297 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:10:26,828 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 274 proven. 82 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-09-10 12:10:26,830 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:10:26,831 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-10 12:10:26,831 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:10:26,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 12:10:26,832 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 12:10:26,832 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-10 12:10:26,832 INFO L87 Difference]: Start difference. First operand 14107 states and 18436 transitions. Second operand 9 states. [2018-09-10 12:10:36,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:10:36,916 INFO L93 Difference]: Finished difference Result 33633 states and 52045 transitions. [2018-09-10 12:10:36,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-10 12:10:36,916 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 440 [2018-09-10 12:10:36,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:10:37,055 INFO L225 Difference]: With dead ends: 33633 [2018-09-10 12:10:37,055 INFO L226 Difference]: Without dead ends: 19537 [2018-09-10 12:10:37,185 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1786 GetRequests, 1762 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=146, Invalid=316, Unknown=0, NotChecked=0, Total=462 [2018-09-10 12:10:37,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19537 states. [2018-09-10 12:10:37,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19537 to 19463. [2018-09-10 12:10:37,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19463 states. [2018-09-10 12:10:38,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19463 states to 19463 states and 28184 transitions. [2018-09-10 12:10:38,108 INFO L78 Accepts]: Start accepts. Automaton has 19463 states and 28184 transitions. Word has length 440 [2018-09-10 12:10:38,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:10:38,109 INFO L480 AbstractCegarLoop]: Abstraction has 19463 states and 28184 transitions. [2018-09-10 12:10:38,109 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 12:10:38,109 INFO L276 IsEmpty]: Start isEmpty. Operand 19463 states and 28184 transitions. [2018-09-10 12:10:38,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2018-09-10 12:10:38,143 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:10:38,143 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:10:38,144 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 12:10:38,144 INFO L82 PathProgramCache]: Analyzing trace with hash -379697310, now seen corresponding path program 1 times [2018-09-10 12:10:38,145 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:10:38,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:10:38,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:10:38,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:10:38,146 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:10:38,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:10:38,923 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2018-09-10 12:10:38,924 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:10:38,924 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:10:38,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:10:38,942 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:10:39,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:10:39,105 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:10:39,407 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2018-09-10 12:10:39,407 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:10:40,031 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2018-09-10 12:10:40,054 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 12:10:40,054 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 7 [2018-09-10 12:10:40,054 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:10:40,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 12:10:40,055 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 12:10:40,055 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-09-10 12:10:40,055 INFO L87 Difference]: Start difference. First operand 19463 states and 28184 transitions. Second operand 4 states. [2018-09-10 12:10:46,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:10:46,088 INFO L93 Difference]: Finished difference Result 57257 states and 96307 transitions. [2018-09-10 12:10:46,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 12:10:46,089 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 439 [2018-09-10 12:10:46,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:10:46,401 INFO L225 Difference]: With dead ends: 57257 [2018-09-10 12:10:46,402 INFO L226 Difference]: Without dead ends: 37805 [2018-09-10 12:10:46,705 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 887 GetRequests, 882 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-09-10 12:10:46,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37805 states. [2018-09-10 12:10:47,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37805 to 37798. [2018-09-10 12:10:47,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37798 states. [2018-09-10 12:10:47,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37798 states to 37798 states and 56389 transitions. [2018-09-10 12:10:47,995 INFO L78 Accepts]: Start accepts. Automaton has 37798 states and 56389 transitions. Word has length 439 [2018-09-10 12:10:47,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:10:47,996 INFO L480 AbstractCegarLoop]: Abstraction has 37798 states and 56389 transitions. [2018-09-10 12:10:47,996 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 12:10:47,997 INFO L276 IsEmpty]: Start isEmpty. Operand 37798 states and 56389 transitions. [2018-09-10 12:10:48,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2018-09-10 12:10:48,040 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:10:48,040 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-10 12:10:48,041 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 12:10:48,041 INFO L82 PathProgramCache]: Analyzing trace with hash -2136204839, now seen corresponding path program 1 times [2018-09-10 12:10:48,041 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:10:48,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:10:48,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:10:48,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:10:48,042 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:10:48,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:10:48,805 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-09-10 12:10:48,805 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:10:48,805 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 12:10:48,806 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:10:48,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 12:10:48,806 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 12:10:48,807 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 12:10:48,807 INFO L87 Difference]: Start difference. First operand 37798 states and 56389 transitions. Second operand 3 states. [2018-09-10 12:10:53,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:10:53,649 INFO L93 Difference]: Finished difference Result 75904 states and 113513 transitions. [2018-09-10 12:10:53,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 12:10:53,649 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 511 [2018-09-10 12:10:53,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:10:53,980 INFO L225 Difference]: With dead ends: 75904 [2018-09-10 12:10:53,980 INFO L226 Difference]: Without dead ends: 38117 [2018-09-10 12:10:54,306 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 12:10:54,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38117 states. [2018-09-10 12:10:55,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38117 to 37784. [2018-09-10 12:10:55,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37784 states. [2018-09-10 12:10:55,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37784 states to 37784 states and 56205 transitions. [2018-09-10 12:10:55,490 INFO L78 Accepts]: Start accepts. Automaton has 37784 states and 56205 transitions. Word has length 511 [2018-09-10 12:10:55,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:10:55,491 INFO L480 AbstractCegarLoop]: Abstraction has 37784 states and 56205 transitions. [2018-09-10 12:10:55,491 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 12:10:55,492 INFO L276 IsEmpty]: Start isEmpty. Operand 37784 states and 56205 transitions. [2018-09-10 12:10:55,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2018-09-10 12:10:55,541 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:10:55,542 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-10 12:10:55,542 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:10:55,543 INFO L82 PathProgramCache]: Analyzing trace with hash 14480613, now seen corresponding path program 1 times [2018-09-10 12:10:55,543 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:10:56,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:10:56,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:10:56,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:10:56,002 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:10:56,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:10:56,643 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 188 proven. 15 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2018-09-10 12:10:56,643 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:10:56,644 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 12:10:56,653 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:10:56,654 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:10:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:10:56,838 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:10:57,395 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 269 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2018-09-10 12:10:57,395 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:10:59,105 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 186 proven. 199 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-09-10 12:10:59,126 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 12:10:59,126 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 12 [2018-09-10 12:10:59,127 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:10:59,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:10:59,127 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:10:59,128 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-09-10 12:10:59,128 INFO L87 Difference]: Start difference. First operand 37784 states and 56205 transitions. Second operand 5 states. [2018-09-10 12:11:12,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:11:12,748 INFO L93 Difference]: Finished difference Result 82562 states and 117295 transitions. [2018-09-10 12:11:12,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 12:11:12,748 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 532 [2018-09-10 12:11:12,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:11:12,958 INFO L225 Difference]: With dead ends: 82562 [2018-09-10 12:11:12,958 INFO L226 Difference]: Without dead ends: 44789 [2018-09-10 12:11:13,205 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1076 GetRequests, 1061 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2018-09-10 12:11:13,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44789 states. [2018-09-10 12:11:13,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44789 to 43591. [2018-09-10 12:11:13,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43591 states. [2018-09-10 12:11:14,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43591 states to 43591 states and 55908 transitions. [2018-09-10 12:11:14,733 INFO L78 Accepts]: Start accepts. Automaton has 43591 states and 55908 transitions. Word has length 532 [2018-09-10 12:11:14,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:11:14,734 INFO L480 AbstractCegarLoop]: Abstraction has 43591 states and 55908 transitions. [2018-09-10 12:11:14,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 12:11:14,734 INFO L276 IsEmpty]: Start isEmpty. Operand 43591 states and 55908 transitions. [2018-09-10 12:11:14,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 568 [2018-09-10 12:11:14,749 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:11:14,750 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 12:11:14,750 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:11:14,751 INFO L82 PathProgramCache]: Analyzing trace with hash 259425407, now seen corresponding path program 1 times [2018-09-10 12:11:14,751 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:11:14,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:11:14,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:11:14,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:11:14,752 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:11:14,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:11:15,611 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 314 proven. 83 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-10 12:11:15,611 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:11:15,611 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:11:15,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:11:15,630 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:11:15,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:11:15,838 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:11:16,199 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 414 proven. 2 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-09-10 12:11:16,199 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:11:16,460 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 314 proven. 83 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-10 12:11:16,481 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:11:16,481 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 11 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 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:11:16,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:11:16,498 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:11:16,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:11:16,925 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:11:17,064 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 414 proven. 2 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-09-10 12:11:17,064 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:11:17,757 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 314 proven. 83 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-10 12:11:17,760 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:11:17,761 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-10 12:11:17,761 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:11:17,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 12:11:17,762 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 12:11:17,763 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-10 12:11:17,763 INFO L87 Difference]: Start difference. First operand 43591 states and 55908 transitions. Second operand 9 states. [2018-09-10 12:11:30,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:11:30,591 INFO L93 Difference]: Finished difference Result 87583 states and 115861 transitions. [2018-09-10 12:11:30,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-10 12:11:30,592 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 567 [2018-09-10 12:11:30,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:11:30,811 INFO L225 Difference]: With dead ends: 87583 [2018-09-10 12:11:30,811 INFO L226 Difference]: Without dead ends: 44308 [2018-09-10 12:11:30,984 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2298 GetRequests, 2272 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2018-09-10 12:11:31,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44308 states. [2018-09-10 12:11:31,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44308 to 43018. [2018-09-10 12:11:31,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43018 states. [2018-09-10 12:11:32,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43018 states to 43018 states and 53388 transitions. [2018-09-10 12:11:32,518 INFO L78 Accepts]: Start accepts. Automaton has 43018 states and 53388 transitions. Word has length 567 [2018-09-10 12:11:32,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:11:32,519 INFO L480 AbstractCegarLoop]: Abstraction has 43018 states and 53388 transitions. [2018-09-10 12:11:32,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 12:11:32,519 INFO L276 IsEmpty]: Start isEmpty. Operand 43018 states and 53388 transitions. [2018-09-10 12:11:32,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2018-09-10 12:11:32,535 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:11:32,536 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:11:32,536 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:11:32,536 INFO L82 PathProgramCache]: Analyzing trace with hash 689520588, now seen corresponding path program 1 times [2018-09-10 12:11:32,537 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:11:32,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:11:32,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:11:32,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:11:32,538 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:11:32,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:11:33,228 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 490 proven. 2 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2018-09-10 12:11:33,228 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:11:33,228 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 12:11:33,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:11:33,245 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:11:33,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:11:33,471 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:11:33,751 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 490 proven. 2 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2018-09-10 12:11:33,752 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:11:34,013 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 490 proven. 2 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2018-09-10 12:11:34,034 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:11:34,034 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 13 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 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:11:34,049 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:11:34,049 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:11:34,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:11:34,546 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:11:34,762 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 490 proven. 2 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2018-09-10 12:11:34,762 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:11:35,468 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 490 proven. 2 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2018-09-10 12:11:35,470 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:11:35,470 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 7 [2018-09-10 12:11:35,470 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:11:35,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 12:11:35,472 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 12:11:35,472 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-09-10 12:11:35,472 INFO L87 Difference]: Start difference. First operand 43018 states and 53388 transitions. Second operand 6 states. [2018-09-10 12:11:41,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:11:41,374 INFO L93 Difference]: Finished difference Result 95744 states and 124707 transitions. [2018-09-10 12:11:41,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-10 12:11:41,375 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 610 [2018-09-10 12:11:41,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:11:41,574 INFO L225 Difference]: With dead ends: 95744 [2018-09-10 12:11:41,574 INFO L226 Difference]: Without dead ends: 53042 [2018-09-10 12:11:41,733 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2451 GetRequests, 2438 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2018-09-10 12:11:41,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53042 states. [2018-09-10 12:11:42,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53042 to 51997. [2018-09-10 12:11:42,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51997 states. [2018-09-10 12:11:42,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51997 states to 51997 states and 62042 transitions. [2018-09-10 12:11:42,708 INFO L78 Accepts]: Start accepts. Automaton has 51997 states and 62042 transitions. Word has length 610 [2018-09-10 12:11:42,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:11:42,709 INFO L480 AbstractCegarLoop]: Abstraction has 51997 states and 62042 transitions. [2018-09-10 12:11:42,709 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 12:11:42,709 INFO L276 IsEmpty]: Start isEmpty. Operand 51997 states and 62042 transitions. [2018-09-10 12:11:42,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2018-09-10 12:11:42,730 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:11:42,731 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:11:42,731 INFO L423 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:11:42,731 INFO L82 PathProgramCache]: Analyzing trace with hash 66824431, now seen corresponding path program 1 times [2018-09-10 12:11:42,731 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:11:42,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:11:42,732 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:11:42,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:11:42,733 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:11:42,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:11:43,940 WARN L175 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-10 12:11:45,366 INFO L134 CoverageAnalysis]: Checked inductivity of 817 backedges. 352 proven. 371 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-09-10 12:11:45,367 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:11:45,367 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:11:45,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:11:45,374 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:11:45,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:11:45,586 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:11:46,363 INFO L134 CoverageAnalysis]: Checked inductivity of 817 backedges. 566 proven. 41 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2018-09-10 12:11:46,363 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:11:46,981 WARN L175 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-10 12:11:47,831 INFO L134 CoverageAnalysis]: Checked inductivity of 817 backedges. 263 proven. 460 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-09-10 12:11:47,851 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:11:47,851 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 15 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 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:11:47,868 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:11:47,868 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:11:48,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:11:48,358 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:11:49,591 INFO L134 CoverageAnalysis]: Checked inductivity of 817 backedges. 516 proven. 41 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2018-09-10 12:11:49,591 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:11:50,919 INFO L134 CoverageAnalysis]: Checked inductivity of 817 backedges. 263 proven. 460 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-09-10 12:11:50,921 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:11:50,921 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9, 8, 9] total 23 [2018-09-10 12:11:50,922 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:11:50,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-10 12:11:50,923 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-10 12:11:50,924 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2018-09-10 12:11:50,924 INFO L87 Difference]: Start difference. First operand 51997 states and 62042 transitions. Second operand 13 states. [2018-09-10 12:12:11,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:12:11,595 INFO L93 Difference]: Finished difference Result 112501 states and 134488 transitions. [2018-09-10 12:12:11,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-09-10 12:12:11,595 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 628 [2018-09-10 12:12:11,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:12:11,777 INFO L225 Difference]: With dead ends: 112501 [2018-09-10 12:12:11,777 INFO L226 Difference]: Without dead ends: 58267 [2018-09-10 12:12:11,931 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2567 GetRequests, 2521 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=492, Invalid=1578, Unknown=0, NotChecked=0, Total=2070 [2018-09-10 12:12:11,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58267 states. [2018-09-10 12:12:12,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58267 to 56217. [2018-09-10 12:12:12,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56217 states. [2018-09-10 12:12:12,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56217 states to 56217 states and 66433 transitions. [2018-09-10 12:12:12,900 INFO L78 Accepts]: Start accepts. Automaton has 56217 states and 66433 transitions. Word has length 628 [2018-09-10 12:12:12,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:12:12,900 INFO L480 AbstractCegarLoop]: Abstraction has 56217 states and 66433 transitions. [2018-09-10 12:12:12,900 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-10 12:12:12,900 INFO L276 IsEmpty]: Start isEmpty. Operand 56217 states and 66433 transitions. [2018-09-10 12:12:12,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2018-09-10 12:12:12,923 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:12:12,924 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:12:12,924 INFO L423 AbstractCegarLoop]: === Iteration 14 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:12:12,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1037476582, now seen corresponding path program 1 times [2018-09-10 12:12:12,925 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:12:12,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:12:12,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:12:12,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:12:12,926 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:12:12,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:12:13,773 INFO L134 CoverageAnalysis]: Checked inductivity of 849 backedges. 372 proven. 346 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2018-09-10 12:12:13,773 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:12:13,773 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 12:12:13,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:12:13,980 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:12:14,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:12:14,197 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:12:14,844 INFO L134 CoverageAnalysis]: Checked inductivity of 849 backedges. 504 proven. 2 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2018-09-10 12:12:14,844 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:12:15,130 INFO L134 CoverageAnalysis]: Checked inductivity of 849 backedges. 504 proven. 2 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2018-09-10 12:12:15,151 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 12:12:15,151 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 17 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 17 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 12:12:15,170 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:12:15,170 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 12:12:15,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:12:15,673 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 12:12:15,865 INFO L134 CoverageAnalysis]: Checked inductivity of 849 backedges. 504 proven. 2 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2018-09-10 12:12:15,865 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 12:12:16,257 INFO L134 CoverageAnalysis]: Checked inductivity of 849 backedges. 504 proven. 2 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2018-09-10 12:12:16,259 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 12:12:16,260 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5, 5, 5] total 13 [2018-09-10 12:12:16,260 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 12:12:16,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-10 12:12:16,261 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-10 12:12:16,261 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-09-10 12:12:16,262 INFO L87 Difference]: Start difference. First operand 56217 states and 66433 transitions. Second operand 12 states. [2018-09-10 12:12:47,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 12:12:47,848 INFO L93 Difference]: Finished difference Result 178949 states and 219370 transitions. [2018-09-10 12:12:47,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-09-10 12:12:47,849 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 667 [2018-09-10 12:12:47,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 12:12:48,290 INFO L225 Difference]: With dead ends: 178949 [2018-09-10 12:12:48,290 INFO L226 Difference]: Without dead ends: 123048 [2018-09-10 12:12:48,588 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2772 GetRequests, 2702 SyntacticMatches, 9 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1437 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=725, Invalid=3181, Unknown=0, NotChecked=0, Total=3906 [2018-09-10 12:12:48,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123048 states. [2018-09-10 12:12:51,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123048 to 122011. [2018-09-10 12:12:51,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122011 states. [2018-09-10 12:12:51,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122011 states to 122011 states and 145204 transitions. [2018-09-10 12:12:51,850 INFO L78 Accepts]: Start accepts. Automaton has 122011 states and 145204 transitions. Word has length 667 [2018-09-10 12:12:51,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 12:12:51,851 INFO L480 AbstractCegarLoop]: Abstraction has 122011 states and 145204 transitions. [2018-09-10 12:12:51,851 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-10 12:12:51,851 INFO L276 IsEmpty]: Start isEmpty. Operand 122011 states and 145204 transitions. [2018-09-10 12:12:51,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 710 [2018-09-10 12:12:51,879 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 12:12:51,880 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 12:12:51,880 INFO L423 AbstractCegarLoop]: === Iteration 15 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 12:12:51,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1353807639, now seen corresponding path program 1 times [2018-09-10 12:12:51,881 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 12:12:51,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:12:51,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 12:12:51,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 12:12:51,882 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 12:12:51,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 12:12:52,487 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2018-09-10 12:12:52,487 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 12:12:52,487 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 12:12:52,487 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 12:12:52,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 12:12:52,488 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 12:12:52,488 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-09-10 12:12:52,488 INFO L87 Difference]: Start difference. First operand 122011 states and 145204 transitions. Second operand 5 states. Received shutdown request... [2018-09-10 12:12:56,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-10 12:12:56,764 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-10 12:12:56,770 WARN L206 ceAbstractionStarter]: Timeout [2018-09-10 12:12:56,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 12:12:56 BoogieIcfgContainer [2018-09-10 12:12:56,771 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 12:12:56,772 INFO L168 Benchmark]: Toolchain (without parser) took 232797.93 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 871.5 MB in the end (delta: 548.8 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-09-10 12:12:56,772 INFO L168 Benchmark]: CDTParser took 0.19 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 12:12:56,773 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1399.70 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: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. [2018-09-10 12:12:56,774 INFO L168 Benchmark]: Boogie Procedure Inliner took 221.44 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-09-10 12:12:56,774 INFO L168 Benchmark]: Boogie Preprocessor took 626.01 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 889.7 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 89.6 MB. Max. memory is 7.1 GB. [2018-09-10 12:12:56,775 INFO L168 Benchmark]: RCFGBuilder took 9590.78 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 316.4 MB). Peak memory consumption was 316.4 MB. Max. memory is 7.1 GB. [2018-09-10 12:12:56,776 INFO L168 Benchmark]: TraceAbstraction took 220949.61 ms. Allocated memory was 2.4 GB in the beginning and 3.8 GB in the end (delta: 1.4 GB). Free memory was 2.0 GB in the beginning and 871.5 MB in the end (delta: 1.1 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-09-10 12:12:56,780 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 1399.70 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: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 221.44 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 626.01 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 889.7 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 89.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9590.78 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 316.4 MB). Peak memory consumption was 316.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 220949.61 ms. Allocated memory was 2.4 GB in the beginning and 3.8 GB in the end (delta: 1.4 GB). Free memory was 2.0 GB in the beginning and 871.5 MB in the end (delta: 1.1 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 193]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 193). Cancelled while BasicCegarLoop was constructing difference of abstraction (122011states) and FLOYD_HOARE automaton (currently 5 states, 5 states before enhancement), while ReachableStatesComputation was computing reachable states (50067 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 220.8s OverallTime, 15 OverallIterations, 5 TraceHistogramMax, 173.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2744 SDtfs, 33181 SDslu, 4469 SDs, 0 SdLazy, 54182 SolverSat, 11371 SolverUnsat, 8 SolverUnknown, 0 SolverNotchecked, 143.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16173 GetRequests, 15912 SyntacticMatches, 33 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2303 ImplicationChecksByTransitivity, 10.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=122011occurred in iteration=14, 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: 12.8s AutomataMinimizationTime, 14 MinimizatonAttempts, 7764 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 4.4s SatisfiabilityAnalysisTime, 23.6s InterpolantComputationTime, 14305 NumberOfCodeBlocks, 14305 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 22186 ConstructedInterpolants, 0 QuantifiedInterpolants, 44824594 SizeOfPredicates, 28 NumberOfNonLiveVariables, 11535 ConjunctsInSsa, 128 ConjunctsInUnsatCore, 47 InterpolantComputations, 9 PerfectInterpolantSequences, 20236/23163 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_label16_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_12-12-56-802.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem15_label16_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_12-12-56-802.csv Completed graceful shutdown