java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label43_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 12:19:47,226 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 12:19:47,228 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 12:19:47,242 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 12:19:47,242 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 12:19:47,244 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 12:19:47,245 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 12:19:47,247 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 12:19:47,249 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 12:19:47,249 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 12:19:47,250 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 12:19:47,251 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 12:19:47,252 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 12:19:47,253 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 12:19:47,254 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 12:19:47,255 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 12:19:47,255 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 12:19:47,257 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 12:19:47,259 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 12:19:47,261 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 12:19:47,262 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 12:19:47,263 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 12:19:47,266 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 12:19:47,266 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 12:19:47,267 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 12:19:47,268 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 12:19:47,271 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 12:19:47,271 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 12:19:47,272 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 12:19:47,273 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 12:19:47,274 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 12:19:47,276 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 12:19:47,276 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 12:19:47,276 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 12:19:47,278 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 12:19:47,278 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 12:19:47,279 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 12:19:47,310 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 12:19:47,311 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 12:19:47,312 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 12:19:47,312 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 12:19:47,312 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 12:19:47,313 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 12:19:47,313 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 12:19:47,313 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 12:19:47,314 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 12:19:47,314 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 12:19:47,314 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 12:19:47,315 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 12:19:47,315 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 12:19:47,315 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 12:19:47,316 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 12:19:47,316 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 12:19:47,316 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 12:19:47,318 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 12:19:47,318 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 12:19:47,318 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 12:19:47,319 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 12:19:47,319 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 12:19:47,319 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 12:19:47,320 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:19:47,320 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 12:19:47,320 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 12:19:47,320 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 12:19:47,320 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 12:19:47,321 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 12:19:47,321 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 12:19:47,321 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 12:19:47,321 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 12:19:47,321 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 12:19:47,386 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 12:19:47,398 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 12:19:47,402 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 12:19:47,403 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 12:19:47,404 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 12:19:47,404 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label43_false-unreach-call.c [2018-07-24 12:19:47,659 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1a4b869c/f403a4e016db4433a799a753a9cbd391/FLAGc92af57f6 [2018-07-24 12:19:48,098 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 12:19:48,099 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label43_false-unreach-call.c [2018-07-24 12:19:48,124 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1a4b869c/f403a4e016db4433a799a753a9cbd391/FLAGc92af57f6 [2018-07-24 12:19:48,141 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1a4b869c/f403a4e016db4433a799a753a9cbd391 [2018-07-24 12:19:48,154 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 12:19:48,157 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 12:19:48,158 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 12:19:48,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 12:19:48,164 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 12:19:48,166 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:19:48" (1/1) ... [2018-07-24 12:19:48,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dadb0c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:19:48, skipping insertion in model container [2018-07-24 12:19:48,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 12:19:48" (1/1) ... [2018-07-24 12:19:48,452 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 12:19:48,988 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:19:49,007 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 12:19:49,305 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 12:19:49,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:19:49 WrapperNode [2018-07-24 12:19:49,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 12:19:49,424 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 12:19:49,424 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 12:19:49,425 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 12:19:49,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:19:49" (1/1) ... [2018-07-24 12:19:49,500 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:19:49" (1/1) ... [2018-07-24 12:19:49,634 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 12:19:49,634 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 12:19:49,634 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 12:19:49,634 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 12:19:49,991 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:19:49" (1/1) ... [2018-07-24 12:19:49,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:19:49" (1/1) ... [2018-07-24 12:19:50,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:19:49" (1/1) ... [2018-07-24 12:19:50,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:19:49" (1/1) ... [2018-07-24 12:19:50,062 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:19:49" (1/1) ... [2018-07-24 12:19:50,080 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:19:49" (1/1) ... [2018-07-24 12:19:50,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:19:49" (1/1) ... [2018-07-24 12:19:50,123 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 12:19:50,124 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 12:19:50,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 12:19:50,125 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 12:19:50,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:19:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 12:19:50,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 12:19:50,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 12:19:50,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 12:19:50,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 12:19:50,196 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 12:19:50,196 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 12:19:50,196 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 12:19:50,196 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-24 12:19:50,197 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 12:19:50,197 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-24 12:19:56,722 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 12:19:56,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:19:56 BoogieIcfgContainer [2018-07-24 12:19:56,723 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 12:19:56,724 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 12:19:56,724 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 12:19:56,728 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 12:19:56,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 12:19:48" (1/3) ... [2018-07-24 12:19:56,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5675a255 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:19:56, skipping insertion in model container [2018-07-24 12:19:56,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 12:19:49" (2/3) ... [2018-07-24 12:19:56,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5675a255 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 12:19:56, skipping insertion in model container [2018-07-24 12:19:56,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 12:19:56" (3/3) ... [2018-07-24 12:19:56,732 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label43_false-unreach-call.c [2018-07-24 12:19:56,742 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 12:19:56,751 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 12:19:56,809 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 12:19:56,810 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 12:19:56,810 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 12:19:56,810 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 12:19:56,810 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 12:19:56,811 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 12:19:56,811 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 12:19:56,811 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 12:19:56,811 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 12:19:56,843 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-07-24 12:19:56,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-24 12:19:56,849 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:19:56,850 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:19:56,851 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:19:56,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1698086060, now seen corresponding path program 1 times [2018-07-24 12:19:56,860 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:19:56,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:19:56,907 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:19:56,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:19:56,908 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:19:56,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:19:57,245 WARN L169 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:19:57,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:19:57,355 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:19:57,356 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 12:19:57,356 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:19:57,362 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:19:57,377 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:19:57,378 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:19:57,381 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-07-24 12:20:01,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:20:01,178 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-07-24 12:20:01,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:20:01,189 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-07-24 12:20:01,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:20:01,216 INFO L225 Difference]: With dead ends: 1156 [2018-07-24 12:20:01,216 INFO L226 Difference]: Without dead ends: 744 [2018-07-24 12:20:01,224 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 12:20:01,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-07-24 12:20:01,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-07-24 12:20:01,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-07-24 12:20:01,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1343 transitions. [2018-07-24 12:20:01,369 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1343 transitions. Word has length 16 [2018-07-24 12:20:01,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:20:01,370 INFO L471 AbstractCegarLoop]: Abstraction has 744 states and 1343 transitions. [2018-07-24 12:20:01,370 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:20:01,370 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1343 transitions. [2018-07-24 12:20:01,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-07-24 12:20:01,376 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:20:01,376 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:20:01,376 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:20:01,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1708420775, now seen corresponding path program 1 times [2018-07-24 12:20:01,377 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:20:01,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:20:01,379 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:20:01,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:20:01,379 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:20:01,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:20:01,783 WARN L169 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:20:01,861 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:20:01,862 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:20:01,862 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:20:01,862 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:20:01,865 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:20:01,866 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:20:01,866 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:20:01,867 INFO L87 Difference]: Start difference. First operand 744 states and 1343 transitions. Second operand 6 states. [2018-07-24 12:20:13,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:20:13,159 INFO L93 Difference]: Finished difference Result 2839 states and 5278 transitions. [2018-07-24 12:20:13,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:20:13,160 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 89 [2018-07-24 12:20:13,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:20:13,177 INFO L225 Difference]: With dead ends: 2839 [2018-07-24 12:20:13,177 INFO L226 Difference]: Without dead ends: 2101 [2018-07-24 12:20:13,185 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:20:13,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2101 states. [2018-07-24 12:20:13,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2101 to 2083. [2018-07-24 12:20:13,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2083 states. [2018-07-24 12:20:13,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 3316 transitions. [2018-07-24 12:20:13,285 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 3316 transitions. Word has length 89 [2018-07-24 12:20:13,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:20:13,286 INFO L471 AbstractCegarLoop]: Abstraction has 2083 states and 3316 transitions. [2018-07-24 12:20:13,286 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:20:13,286 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 3316 transitions. [2018-07-24 12:20:13,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-07-24 12:20:13,295 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:20:13,295 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:20:13,295 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:20:13,296 INFO L82 PathProgramCache]: Analyzing trace with hash -514251206, now seen corresponding path program 1 times [2018-07-24 12:20:13,296 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:20:13,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:20:13,297 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:20:13,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:20:13,298 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:20:13,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:20:13,571 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 12:20:13,571 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 12:20:13,572 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 12:20:13,572 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:20:13,572 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 12:20:13,573 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 12:20:13,573 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 12:20:13,573 INFO L87 Difference]: Start difference. First operand 2083 states and 3316 transitions. Second operand 6 states. [2018-07-24 12:20:17,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:20:17,747 INFO L93 Difference]: Finished difference Result 5572 states and 9325 transitions. [2018-07-24 12:20:17,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 12:20:17,749 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2018-07-24 12:20:17,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:20:17,772 INFO L225 Difference]: With dead ends: 5572 [2018-07-24 12:20:17,773 INFO L226 Difference]: Without dead ends: 3495 [2018-07-24 12:20:17,780 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:20:17,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3495 states. [2018-07-24 12:20:17,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3495 to 3478. [2018-07-24 12:20:17,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3478 states. [2018-07-24 12:20:17,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3478 states to 3478 states and 5367 transitions. [2018-07-24 12:20:17,875 INFO L78 Accepts]: Start accepts. Automaton has 3478 states and 5367 transitions. Word has length 118 [2018-07-24 12:20:17,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:20:17,876 INFO L471 AbstractCegarLoop]: Abstraction has 3478 states and 5367 transitions. [2018-07-24 12:20:17,876 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 12:20:17,876 INFO L276 IsEmpty]: Start isEmpty. Operand 3478 states and 5367 transitions. [2018-07-24 12:20:17,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-07-24 12:20:17,884 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:20:17,884 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 12:20:17,884 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:20:17,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1349824140, now seen corresponding path program 1 times [2018-07-24 12:20:17,885 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:20:17,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:20:17,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:20:17,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:20:17,886 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:20:17,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:20:18,192 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 18 proven. 97 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:20:18,192 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:20:18,193 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:20:18,201 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:20:18,201 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:20:18,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:20:18,316 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:20:18,801 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-07-24 12:20:18,802 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:20:19,710 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 18 proven. 97 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 12:20:19,747 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:20:19,747 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-07-24 12:20:19,748 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:20:19,748 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:20:19,749 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:20:19,749 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:20:19,750 INFO L87 Difference]: Start difference. First operand 3478 states and 5367 transitions. Second operand 5 states. [2018-07-24 12:20:26,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:20:26,852 INFO L93 Difference]: Finished difference Result 9425 states and 14242 transitions. [2018-07-24 12:20:26,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 12:20:26,855 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 234 [2018-07-24 12:20:26,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:20:26,893 INFO L225 Difference]: With dead ends: 9425 [2018-07-24 12:20:26,893 INFO L226 Difference]: Without dead ends: 5953 [2018-07-24 12:20:26,915 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 463 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-07-24 12:20:26,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5953 states. [2018-07-24 12:20:27,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5953 to 5703. [2018-07-24 12:20:27,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5703 states. [2018-07-24 12:20:27,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5703 states to 5703 states and 7819 transitions. [2018-07-24 12:20:27,088 INFO L78 Accepts]: Start accepts. Automaton has 5703 states and 7819 transitions. Word has length 234 [2018-07-24 12:20:27,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:20:27,088 INFO L471 AbstractCegarLoop]: Abstraction has 5703 states and 7819 transitions. [2018-07-24 12:20:27,089 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:20:27,089 INFO L276 IsEmpty]: Start isEmpty. Operand 5703 states and 7819 transitions. [2018-07-24 12:20:27,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2018-07-24 12:20:27,101 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:20:27,102 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 12:20:27,102 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:20:27,102 INFO L82 PathProgramCache]: Analyzing trace with hash 2089468111, now seen corresponding path program 1 times [2018-07-24 12:20:27,103 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:20:27,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:20:27,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:20:27,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:20:27,104 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:20:27,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:20:27,457 WARN L169 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:20:27,555 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 33 proven. 226 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-07-24 12:20:27,555 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:20:27,555 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:20:27,566 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:20:27,566 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:20:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:20:27,699 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:20:27,856 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 319 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-07-24 12:20:27,856 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:20:28,197 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 131 proven. 101 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-07-24 12:20:28,229 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:20:28,229 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:20:28,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:20:28,260 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:20:28,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:20:28,520 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:20:28,893 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 319 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-07-24 12:20:28,893 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:20:29,196 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 131 proven. 101 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-07-24 12:20:29,198 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:20:29,198 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-07-24 12:20:29,198 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:20:29,200 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 12:20:29,200 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 12:20:29,200 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2018-07-24 12:20:29,201 INFO L87 Difference]: Start difference. First operand 5703 states and 7819 transitions. Second operand 9 states. [2018-07-24 12:20:37,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:20:37,286 INFO L93 Difference]: Finished difference Result 15277 states and 21339 transitions. [2018-07-24 12:20:37,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-07-24 12:20:37,286 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 335 [2018-07-24 12:20:37,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:20:37,343 INFO L225 Difference]: With dead ends: 15277 [2018-07-24 12:20:37,343 INFO L226 Difference]: Without dead ends: 9580 [2018-07-24 12:20:37,407 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1391 GetRequests, 1352 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=315, Invalid=1091, Unknown=0, NotChecked=0, Total=1406 [2018-07-24 12:20:37,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9580 states. [2018-07-24 12:20:37,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9580 to 9290. [2018-07-24 12:20:37,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9290 states. [2018-07-24 12:20:37,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9290 states to 9290 states and 11462 transitions. [2018-07-24 12:20:37,770 INFO L78 Accepts]: Start accepts. Automaton has 9290 states and 11462 transitions. Word has length 335 [2018-07-24 12:20:37,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:20:37,771 INFO L471 AbstractCegarLoop]: Abstraction has 9290 states and 11462 transitions. [2018-07-24 12:20:37,771 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 12:20:37,771 INFO L276 IsEmpty]: Start isEmpty. Operand 9290 states and 11462 transitions. [2018-07-24 12:20:37,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 806 [2018-07-24 12:20:37,834 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:20:37,835 INFO L353 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:20:37,835 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:20:37,836 INFO L82 PathProgramCache]: Analyzing trace with hash 375378999, now seen corresponding path program 1 times [2018-07-24 12:20:37,836 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:20:37,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:20:37,838 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:20:37,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:20:37,838 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:20:37,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:20:39,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1285 backedges. 397 proven. 115 refuted. 0 times theorem prover too weak. 773 trivial. 0 not checked. [2018-07-24 12:20:39,114 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:20:39,114 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:20:39,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:20:39,135 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:20:39,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:20:39,419 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:20:40,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1285 backedges. 941 proven. 2 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2018-07-24 12:20:40,261 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:20:40,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1285 backedges. 397 proven. 115 refuted. 0 times theorem prover too weak. 773 trivial. 0 not checked. [2018-07-24 12:20:40,780 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:20:40,780 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:20:40,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:20:40,797 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:20:41,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:20:41,454 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:20:41,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1285 backedges. 941 proven. 2 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2018-07-24 12:20:41,883 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:20:43,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1285 backedges. 397 proven. 115 refuted. 0 times theorem prover too weak. 773 trivial. 0 not checked. [2018-07-24 12:20:43,028 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:20:43,029 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 12:20:43,029 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:20:43,031 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 12:20:43,031 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 12:20:43,031 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:20:43,032 INFO L87 Difference]: Start difference. First operand 9290 states and 11462 transitions. Second operand 9 states. [2018-07-24 12:20:51,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:20:51,012 INFO L93 Difference]: Finished difference Result 19232 states and 24292 transitions. [2018-07-24 12:20:51,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-24 12:20:51,012 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 805 [2018-07-24 12:20:51,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:20:51,066 INFO L225 Difference]: With dead ends: 19232 [2018-07-24 12:20:51,067 INFO L226 Difference]: Without dead ends: 9948 [2018-07-24 12:20:51,096 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3236 GetRequests, 3217 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2018-07-24 12:20:51,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9948 states. [2018-07-24 12:20:51,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9948 to 9935. [2018-07-24 12:20:51,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9935 states. [2018-07-24 12:20:51,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9935 states to 9935 states and 12212 transitions. [2018-07-24 12:20:51,314 INFO L78 Accepts]: Start accepts. Automaton has 9935 states and 12212 transitions. Word has length 805 [2018-07-24 12:20:51,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:20:51,316 INFO L471 AbstractCegarLoop]: Abstraction has 9935 states and 12212 transitions. [2018-07-24 12:20:51,316 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 12:20:51,316 INFO L276 IsEmpty]: Start isEmpty. Operand 9935 states and 12212 transitions. [2018-07-24 12:20:51,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 814 [2018-07-24 12:20:51,375 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:20:51,376 INFO L353 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:20:51,376 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:20:51,376 INFO L82 PathProgramCache]: Analyzing trace with hash 264002637, now seen corresponding path program 1 times [2018-07-24 12:20:51,376 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:20:51,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:20:51,377 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:20:51,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:20:51,378 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:20:51,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:20:52,003 WARN L169 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 12:20:53,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1584 backedges. 619 proven. 389 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2018-07-24 12:20:53,228 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:20:53,228 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:20:53,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:20:53,238 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:20:53,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:20:53,493 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:20:53,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1584 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 1515 trivial. 0 not checked. [2018-07-24 12:20:53,832 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:20:54,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1584 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 1515 trivial. 0 not checked. [2018-07-24 12:20:54,352 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 12:20:54,353 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-07-24 12:20:54,353 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:20:54,353 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 12:20:54,353 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 12:20:54,354 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:20:54,354 INFO L87 Difference]: Start difference. First operand 9935 states and 12212 transitions. Second operand 3 states. [2018-07-24 12:20:56,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:20:56,835 INFO L93 Difference]: Finished difference Result 19864 states and 24418 transitions. [2018-07-24 12:20:56,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 12:20:56,840 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 813 [2018-07-24 12:20:56,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:20:56,874 INFO L225 Difference]: With dead ends: 19864 [2018-07-24 12:20:56,875 INFO L226 Difference]: Without dead ends: 9935 [2018-07-24 12:20:56,899 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1639 GetRequests, 1627 SyntacticMatches, 5 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-07-24 12:20:56,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9935 states. [2018-07-24 12:20:57,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9935 to 9932. [2018-07-24 12:20:57,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9932 states. [2018-07-24 12:20:57,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9932 states to 9932 states and 11820 transitions. [2018-07-24 12:20:57,089 INFO L78 Accepts]: Start accepts. Automaton has 9932 states and 11820 transitions. Word has length 813 [2018-07-24 12:20:57,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:20:57,091 INFO L471 AbstractCegarLoop]: Abstraction has 9932 states and 11820 transitions. [2018-07-24 12:20:57,091 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 12:20:57,092 INFO L276 IsEmpty]: Start isEmpty. Operand 9932 states and 11820 transitions. [2018-07-24 12:20:57,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 864 [2018-07-24 12:20:57,152 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:20:57,153 INFO L353 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:20:57,153 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:20:57,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1157374637, now seen corresponding path program 1 times [2018-07-24 12:20:57,154 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:20:57,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:20:57,155 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:20:57,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:20:57,156 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:20:57,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:20:58,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 989 proven. 97 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2018-07-24 12:20:58,018 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:20:58,019 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-07-24 12:20:58,026 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:20:58,027 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:20:58,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:20:58,308 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:20:58,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 573 proven. 2 refuted. 0 times theorem prover too weak. 1231 trivial. 0 not checked. [2018-07-24 12:20:58,921 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:20:59,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 573 proven. 2 refuted. 0 times theorem prover too weak. 1231 trivial. 0 not checked. [2018-07-24 12:20:59,520 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:20:59,521 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 9 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 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:20:59,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:20:59,538 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:21:00,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:21:00,145 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:21:00,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 989 proven. 6 refuted. 0 times theorem prover too weak. 811 trivial. 0 not checked. [2018-07-24 12:21:00,597 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:21:01,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 991 proven. 4 refuted. 0 times theorem prover too weak. 811 trivial. 0 not checked. [2018-07-24 12:21:01,182 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:21:01,183 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 12:21:01,183 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:21:01,185 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 12:21:01,185 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 12:21:01,185 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:21:01,186 INFO L87 Difference]: Start difference. First operand 9932 states and 11820 transitions. Second operand 9 states. [2018-07-24 12:21:07,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:21:07,258 INFO L93 Difference]: Finished difference Result 27130 states and 33019 transitions. [2018-07-24 12:21:07,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-24 12:21:07,259 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 863 [2018-07-24 12:21:07,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:21:07,370 INFO L225 Difference]: With dead ends: 27130 [2018-07-24 12:21:07,370 INFO L226 Difference]: Without dead ends: 14681 [2018-07-24 12:21:07,447 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3474 GetRequests, 3451 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2018-07-24 12:21:07,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14681 states. [2018-07-24 12:21:07,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14681 to 14617. [2018-07-24 12:21:07,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14617 states. [2018-07-24 12:21:07,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14617 states to 14617 states and 15868 transitions. [2018-07-24 12:21:07,776 INFO L78 Accepts]: Start accepts. Automaton has 14617 states and 15868 transitions. Word has length 863 [2018-07-24 12:21:07,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:21:07,778 INFO L471 AbstractCegarLoop]: Abstraction has 14617 states and 15868 transitions. [2018-07-24 12:21:07,778 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 12:21:07,779 INFO L276 IsEmpty]: Start isEmpty. Operand 14617 states and 15868 transitions. [2018-07-24 12:21:07,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1161 [2018-07-24 12:21:07,878 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:21:07,879 INFO L353 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:21:07,879 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:21:07,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1334227792, now seen corresponding path program 1 times [2018-07-24 12:21:07,880 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:21:07,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:21:07,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:21:07,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:21:07,881 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:21:08,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:21:08,975 WARN L169 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-07-24 12:21:09,319 WARN L169 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-07-24 12:21:09,735 WARN L169 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-07-24 12:21:10,340 WARN L169 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-07-24 12:21:13,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2908 backedges. 713 proven. 285 refuted. 0 times theorem prover too weak. 1910 trivial. 0 not checked. [2018-07-24 12:21:13,316 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:21:13,317 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-07-24 12:21:13,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:21:13,325 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:21:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:21:13,674 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:21:14,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2908 backedges. 597 proven. 2 refuted. 0 times theorem prover too weak. 2309 trivial. 0 not checked. [2018-07-24 12:21:14,286 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:21:15,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2908 backedges. 597 proven. 2 refuted. 0 times theorem prover too weak. 2309 trivial. 0 not checked. [2018-07-24 12:21:15,164 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:21:15,164 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 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 [2018-07-24 12:21:15,181 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:21:15,182 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:21:15,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:21:15,942 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:21:16,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2908 backedges. 597 proven. 2 refuted. 0 times theorem prover too weak. 2309 trivial. 0 not checked. [2018-07-24 12:21:16,585 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:21:17,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2908 backedges. 597 proven. 2 refuted. 0 times theorem prover too weak. 2309 trivial. 0 not checked. [2018-07-24 12:21:17,371 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:21:17,372 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5, 5, 5] total 22 [2018-07-24 12:21:17,373 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:21:17,375 INFO L450 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-24 12:21:17,376 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-24 12:21:17,376 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2018-07-24 12:21:17,376 INFO L87 Difference]: Start difference. First operand 14617 states and 15868 transitions. Second operand 16 states. [2018-07-24 12:21:22,093 WARN L169 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2018-07-24 12:21:25,881 WARN L169 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 29 [2018-07-24 12:21:28,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:21:28,735 INFO L93 Difference]: Finished difference Result 29268 states and 31851 transitions. [2018-07-24 12:21:28,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-07-24 12:21:28,735 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 1160 [2018-07-24 12:21:28,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:21:28,801 INFO L225 Difference]: With dead ends: 29268 [2018-07-24 12:21:28,802 INFO L226 Difference]: Without dead ends: 14662 [2018-07-24 12:21:28,851 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4720 GetRequests, 4658 SyntacticMatches, 3 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 959 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=844, Invalid=2816, Unknown=0, NotChecked=0, Total=3660 [2018-07-24 12:21:28,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14662 states. [2018-07-24 12:21:29,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14662 to 14529. [2018-07-24 12:21:29,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14529 states. [2018-07-24 12:21:29,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14529 states to 14529 states and 15428 transitions. [2018-07-24 12:21:29,110 INFO L78 Accepts]: Start accepts. Automaton has 14529 states and 15428 transitions. Word has length 1160 [2018-07-24 12:21:29,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:21:29,111 INFO L471 AbstractCegarLoop]: Abstraction has 14529 states and 15428 transitions. [2018-07-24 12:21:29,111 INFO L472 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-07-24 12:21:29,112 INFO L276 IsEmpty]: Start isEmpty. Operand 14529 states and 15428 transitions. [2018-07-24 12:21:29,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1238 [2018-07-24 12:21:29,162 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:21:29,163 INFO L353 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:21:29,163 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:21:29,164 INFO L82 PathProgramCache]: Analyzing trace with hash 752158567, now seen corresponding path program 1 times [2018-07-24 12:21:29,164 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:21:29,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:21:29,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:21:29,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:21:29,165 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:21:29,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:21:30,036 WARN L169 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-07-24 12:21:30,426 WARN L169 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2018-07-24 12:21:33,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2835 backedges. 700 proven. 353 refuted. 0 times theorem prover too weak. 1782 trivial. 0 not checked. [2018-07-24 12:21:33,607 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:21:33,607 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-07-24 12:21:33,615 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:21:33,616 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:21:33,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:21:33,978 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:21:35,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2835 backedges. 609 proven. 0 refuted. 0 times theorem prover too weak. 2226 trivial. 0 not checked. [2018-07-24 12:21:35,057 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:21:35,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2835 backedges. 63 proven. 576 refuted. 0 times theorem prover too weak. 2196 trivial. 0 not checked. [2018-07-24 12:21:36,021 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 12:21:36,022 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [11, 5] total 16 [2018-07-24 12:21:36,022 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 12:21:36,023 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 12:21:36,023 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 12:21:36,023 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2018-07-24 12:21:36,024 INFO L87 Difference]: Start difference. First operand 14529 states and 15428 transitions. Second operand 5 states. [2018-07-24 12:21:39,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:21:39,559 INFO L93 Difference]: Finished difference Result 45213 states and 48164 transitions. [2018-07-24 12:21:39,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 12:21:39,559 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1237 [2018-07-24 12:21:39,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:21:39,702 INFO L225 Difference]: With dead ends: 45213 [2018-07-24 12:21:39,703 INFO L226 Difference]: Without dead ends: 31416 [2018-07-24 12:21:39,777 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2488 GetRequests, 2470 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2018-07-24 12:21:39,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31416 states. [2018-07-24 12:21:40,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31416 to 29016. [2018-07-24 12:21:40,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29016 states. [2018-07-24 12:21:40,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29016 states to 29016 states and 30752 transitions. [2018-07-24 12:21:40,303 INFO L78 Accepts]: Start accepts. Automaton has 29016 states and 30752 transitions. Word has length 1237 [2018-07-24 12:21:40,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:21:40,304 INFO L471 AbstractCegarLoop]: Abstraction has 29016 states and 30752 transitions. [2018-07-24 12:21:40,304 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 12:21:40,304 INFO L276 IsEmpty]: Start isEmpty. Operand 29016 states and 30752 transitions. [2018-07-24 12:21:40,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1377 [2018-07-24 12:21:40,396 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:21:40,397 INFO L353 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:21:40,398 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:21:40,398 INFO L82 PathProgramCache]: Analyzing trace with hash -139600130, now seen corresponding path program 1 times [2018-07-24 12:21:40,398 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:21:40,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:21:40,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:21:40,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:21:40,400 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:21:40,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:21:43,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3300 backedges. 839 proven. 353 refuted. 0 times theorem prover too weak. 2108 trivial. 0 not checked. [2018-07-24 12:21:43,001 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:21:43,001 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:21:43,009 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:21:43,010 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:21:43,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:21:43,413 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:21:44,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3300 backedges. 1803 proven. 2 refuted. 0 times theorem prover too weak. 1495 trivial. 0 not checked. [2018-07-24 12:21:44,634 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:21:47,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3300 backedges. 89 proven. 1741 refuted. 0 times theorem prover too weak. 1470 trivial. 0 not checked. [2018-07-24 12:21:47,313 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:21:47,314 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 14 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 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:21:47,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:21:47,332 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:21:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:21:48,256 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:21:49,309 INFO L134 CoverageAnalysis]: Checked inductivity of 3300 backedges. 2273 proven. 14 refuted. 0 times theorem prover too weak. 1013 trivial. 0 not checked. [2018-07-24 12:21:49,309 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:21:49,468 WARN L169 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 28 [2018-07-24 12:21:52,437 INFO L134 CoverageAnalysis]: Checked inductivity of 3300 backedges. 839 proven. 353 refuted. 0 times theorem prover too weak. 2108 trivial. 0 not checked. [2018-07-24 12:21:52,440 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:21:52,441 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 6, 5] total 23 [2018-07-24 12:21:52,441 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:21:52,443 INFO L450 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-07-24 12:21:52,443 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-07-24 12:21:52,443 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2018-07-24 12:21:52,443 INFO L87 Difference]: Start difference. First operand 29016 states and 30752 transitions. Second operand 14 states. [2018-07-24 12:22:08,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:22:08,313 INFO L93 Difference]: Finished difference Result 62209 states and 65967 transitions. [2018-07-24 12:22:08,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-07-24 12:22:08,314 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 1376 [2018-07-24 12:22:08,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:22:08,471 INFO L225 Difference]: With dead ends: 62209 [2018-07-24 12:22:08,472 INFO L226 Difference]: Without dead ends: 32604 [2018-07-24 12:22:08,585 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5571 GetRequests, 5514 SyntacticMatches, 5 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 683 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=508, Invalid=2354, Unknown=0, NotChecked=0, Total=2862 [2018-07-24 12:22:08,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32604 states. [2018-07-24 12:22:09,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32604 to 29727. [2018-07-24 12:22:09,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29727 states. [2018-07-24 12:22:09,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29727 states to 29727 states and 31421 transitions. [2018-07-24 12:22:09,125 INFO L78 Accepts]: Start accepts. Automaton has 29727 states and 31421 transitions. Word has length 1376 [2018-07-24 12:22:09,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:22:09,126 INFO L471 AbstractCegarLoop]: Abstraction has 29727 states and 31421 transitions. [2018-07-24 12:22:09,126 INFO L472 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-07-24 12:22:09,126 INFO L276 IsEmpty]: Start isEmpty. Operand 29727 states and 31421 transitions. [2018-07-24 12:22:09,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1468 [2018-07-24 12:22:09,217 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:22:09,218 INFO L353 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:22:09,218 INFO L414 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:22:09,219 INFO L82 PathProgramCache]: Analyzing trace with hash -2010903677, now seen corresponding path program 1 times [2018-07-24 12:22:09,219 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:22:09,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:22:09,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:22:09,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:22:09,221 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:22:09,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:22:10,895 INFO L134 CoverageAnalysis]: Checked inductivity of 4670 backedges. 659 proven. 534 refuted. 0 times theorem prover too weak. 3477 trivial. 0 not checked. [2018-07-24 12:22:10,895 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:22:10,895 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:22:10,907 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:22:10,907 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:22:11,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:22:11,345 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:22:12,322 INFO L134 CoverageAnalysis]: Checked inductivity of 4670 backedges. 3150 proven. 2 refuted. 0 times theorem prover too weak. 1518 trivial. 0 not checked. [2018-07-24 12:22:12,322 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:22:13,471 INFO L134 CoverageAnalysis]: Checked inductivity of 4670 backedges. 659 proven. 534 refuted. 0 times theorem prover too weak. 3477 trivial. 0 not checked. [2018-07-24 12:22:13,493 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:22:13,493 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 16 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 16 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:22:13,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:22:13,508 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:22:14,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:22:14,473 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:22:15,356 INFO L134 CoverageAnalysis]: Checked inductivity of 4670 backedges. 3150 proven. 2 refuted. 0 times theorem prover too weak. 1518 trivial. 0 not checked. [2018-07-24 12:22:15,357 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:22:16,495 INFO L134 CoverageAnalysis]: Checked inductivity of 4670 backedges. 659 proven. 534 refuted. 0 times theorem prover too weak. 3477 trivial. 0 not checked. [2018-07-24 12:22:16,499 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:22:16,500 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 12:22:16,500 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:22:16,502 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 12:22:16,502 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 12:22:16,503 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 12:22:16,503 INFO L87 Difference]: Start difference. First operand 29727 states and 31421 transitions. Second operand 9 states. [2018-07-24 12:22:22,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:22:22,108 INFO L93 Difference]: Finished difference Result 56689 states and 60348 transitions. [2018-07-24 12:22:22,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-24 12:22:22,109 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1467 [2018-07-24 12:22:22,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:22:22,229 INFO L225 Difference]: With dead ends: 56689 [2018-07-24 12:22:22,229 INFO L226 Difference]: Without dead ends: 30012 [2018-07-24 12:22:22,316 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5890 GetRequests, 5866 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2018-07-24 12:22:22,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30012 states. [2018-07-24 12:22:22,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30012 to 29557. [2018-07-24 12:22:22,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29557 states. [2018-07-24 12:22:22,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29557 states to 29557 states and 30850 transitions. [2018-07-24 12:22:22,866 INFO L78 Accepts]: Start accepts. Automaton has 29557 states and 30850 transitions. Word has length 1467 [2018-07-24 12:22:22,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:22:22,867 INFO L471 AbstractCegarLoop]: Abstraction has 29557 states and 30850 transitions. [2018-07-24 12:22:22,867 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 12:22:22,867 INFO L276 IsEmpty]: Start isEmpty. Operand 29557 states and 30850 transitions. [2018-07-24 12:22:22,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1526 [2018-07-24 12:22:22,939 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:22:22,940 INFO L353 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:22:22,940 INFO L414 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:22:22,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1211470609, now seen corresponding path program 1 times [2018-07-24 12:22:22,941 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:22:22,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:22:22,942 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:22:22,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:22:22,942 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:22:23,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:22:24,165 WARN L169 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-07-24 12:22:24,457 WARN L169 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-07-24 12:22:25,819 INFO L134 CoverageAnalysis]: Checked inductivity of 5030 backedges. 810 proven. 218 refuted. 0 times theorem prover too weak. 4002 trivial. 0 not checked. [2018-07-24 12:22:25,819 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:22:25,819 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:22:25,834 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:22:25,834 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:22:26,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:22:26,297 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:22:27,579 INFO L134 CoverageAnalysis]: Checked inductivity of 5030 backedges. 3478 proven. 6 refuted. 0 times theorem prover too weak. 1546 trivial. 0 not checked. [2018-07-24 12:22:27,580 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:22:29,967 INFO L134 CoverageAnalysis]: Checked inductivity of 5030 backedges. 1367 proven. 607 refuted. 0 times theorem prover too weak. 3056 trivial. 0 not checked. [2018-07-24 12:22:29,989 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:22:29,989 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 18 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 18 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:22:30,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:22:30,006 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:22:31,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:22:31,064 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:22:32,344 INFO L134 CoverageAnalysis]: Checked inductivity of 5030 backedges. 2336 proven. 872 refuted. 0 times theorem prover too weak. 1822 trivial. 0 not checked. [2018-07-24 12:22:32,344 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:22:32,833 WARN L169 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 20 [2018-07-24 12:22:33,048 WARN L169 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-07-24 12:22:33,561 WARN L169 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 29 [2018-07-24 12:22:36,432 INFO L134 CoverageAnalysis]: Checked inductivity of 5030 backedges. 1218 proven. 170 refuted. 0 times theorem prover too weak. 3642 trivial. 0 not checked. [2018-07-24 12:22:36,435 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:22:36,439 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8, 7, 5] total 25 [2018-07-24 12:22:36,439 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:22:36,440 INFO L450 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-07-24 12:22:36,440 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-07-24 12:22:36,441 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2018-07-24 12:22:36,441 INFO L87 Difference]: Start difference. First operand 29557 states and 30850 transitions. Second operand 13 states. [2018-07-24 12:22:52,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:22:52,378 INFO L93 Difference]: Finished difference Result 61271 states and 64001 transitions. [2018-07-24 12:22:52,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-07-24 12:22:52,378 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1525 [2018-07-24 12:22:52,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:22:52,477 INFO L225 Difference]: With dead ends: 61271 [2018-07-24 12:22:52,477 INFO L226 Difference]: Without dead ends: 35440 [2018-07-24 12:22:52,529 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6159 GetRequests, 6105 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 683 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=556, Invalid=2306, Unknown=0, NotChecked=0, Total=2862 [2018-07-24 12:22:52,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35440 states. [2018-07-24 12:22:52,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35440 to 33071. [2018-07-24 12:22:52,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33071 states. [2018-07-24 12:22:53,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33071 states to 33071 states and 34446 transitions. [2018-07-24 12:22:53,026 INFO L78 Accepts]: Start accepts. Automaton has 33071 states and 34446 transitions. Word has length 1525 [2018-07-24 12:22:53,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:22:53,027 INFO L471 AbstractCegarLoop]: Abstraction has 33071 states and 34446 transitions. [2018-07-24 12:22:53,027 INFO L472 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-07-24 12:22:53,027 INFO L276 IsEmpty]: Start isEmpty. Operand 33071 states and 34446 transitions. [2018-07-24 12:22:53,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1549 [2018-07-24 12:22:53,078 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:22:53,079 INFO L353 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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] [2018-07-24 12:22:53,079 INFO L414 AbstractCegarLoop]: === Iteration 14 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:22:53,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1022447350, now seen corresponding path program 1 times [2018-07-24 12:22:53,079 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:22:53,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:22:53,080 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:22:53,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:22:53,081 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:22:53,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:22:54,482 WARN L169 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-07-24 12:22:54,810 WARN L169 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-07-24 12:22:56,847 INFO L134 CoverageAnalysis]: Checked inductivity of 4796 backedges. 1208 proven. 170 refuted. 0 times theorem prover too weak. 3418 trivial. 0 not checked. [2018-07-24 12:22:56,847 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:22:56,847 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:22:56,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:22:56,855 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:22:57,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:22:57,299 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:22:58,641 INFO L134 CoverageAnalysis]: Checked inductivity of 4796 backedges. 2275 proven. 2 refuted. 0 times theorem prover too weak. 2519 trivial. 0 not checked. [2018-07-24 12:22:58,641 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:23:01,978 INFO L134 CoverageAnalysis]: Checked inductivity of 4796 backedges. 1208 proven. 170 refuted. 0 times theorem prover too weak. 3418 trivial. 0 not checked. [2018-07-24 12:23:02,000 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:23:02,000 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 20 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 20 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:23:02,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:23:02,016 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:23:03,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:23:03,082 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:23:03,605 WARN L169 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 16 [2018-07-24 12:23:04,603 INFO L134 CoverageAnalysis]: Checked inductivity of 4796 backedges. 3173 proven. 2 refuted. 0 times theorem prover too weak. 1621 trivial. 0 not checked. [2018-07-24 12:23:04,603 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:23:06,502 INFO L134 CoverageAnalysis]: Checked inductivity of 4796 backedges. 587 proven. 449 refuted. 0 times theorem prover too weak. 3760 trivial. 0 not checked. [2018-07-24 12:23:06,506 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:23:06,507 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5, 5, 5] total 18 [2018-07-24 12:23:06,507 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:23:06,509 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-24 12:23:06,509 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-24 12:23:06,509 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2018-07-24 12:23:06,509 INFO L87 Difference]: Start difference. First operand 33071 states and 34446 transitions. Second operand 11 states. [2018-07-24 12:23:10,794 WARN L169 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-07-24 12:23:18,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 12:23:18,603 INFO L93 Difference]: Finished difference Result 64059 states and 66853 transitions. [2018-07-24 12:23:18,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-07-24 12:23:18,606 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1548 [2018-07-24 12:23:18,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 12:23:18,657 INFO L225 Difference]: With dead ends: 64059 [2018-07-24 12:23:18,657 INFO L226 Difference]: Without dead ends: 28499 [2018-07-24 12:23:18,714 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6247 GetRequests, 6203 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=357, Invalid=1449, Unknown=0, NotChecked=0, Total=1806 [2018-07-24 12:23:18,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28499 states. [2018-07-24 12:23:19,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28499 to 27705. [2018-07-24 12:23:19,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27705 states. [2018-07-24 12:23:19,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27705 states to 27705 states and 28663 transitions. [2018-07-24 12:23:19,265 INFO L78 Accepts]: Start accepts. Automaton has 27705 states and 28663 transitions. Word has length 1548 [2018-07-24 12:23:19,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 12:23:19,267 INFO L471 AbstractCegarLoop]: Abstraction has 27705 states and 28663 transitions. [2018-07-24 12:23:19,267 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-24 12:23:19,267 INFO L276 IsEmpty]: Start isEmpty. Operand 27705 states and 28663 transitions. [2018-07-24 12:23:19,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1682 [2018-07-24 12:23:19,307 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 12:23:19,308 INFO L353 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 12:23:19,308 INFO L414 AbstractCegarLoop]: === Iteration 15 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 12:23:19,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1413882873, now seen corresponding path program 1 times [2018-07-24 12:23:19,309 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 12:23:19,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:23:19,310 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:23:19,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 12:23:19,310 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 12:23:19,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:23:20,849 WARN L169 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-07-24 12:23:21,250 WARN L169 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-07-24 12:23:21,820 WARN L169 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-07-24 12:23:22,531 WARN L169 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 19 [2018-07-24 12:23:26,444 INFO L134 CoverageAnalysis]: Checked inductivity of 5090 backedges. 2487 proven. 791 refuted. 0 times theorem prover too weak. 1812 trivial. 0 not checked. [2018-07-24 12:23:26,445 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:23:26,445 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 12:23:26,453 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:23:26,453 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:23:26,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:23:26,953 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:23:28,173 INFO L134 CoverageAnalysis]: Checked inductivity of 5090 backedges. 2161 proven. 2 refuted. 0 times theorem prover too weak. 2927 trivial. 0 not checked. [2018-07-24 12:23:28,173 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:23:30,443 INFO L134 CoverageAnalysis]: Checked inductivity of 5090 backedges. 1421 proven. 101 refuted. 0 times theorem prover too weak. 3568 trivial. 0 not checked. [2018-07-24 12:23:30,465 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 12:23:30,465 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 22 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 22 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 12:23:30,481 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 12:23:30,481 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 12:23:31,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 12:23:31,659 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 12:23:32,982 INFO L134 CoverageAnalysis]: Checked inductivity of 5090 backedges. 3295 proven. 2 refuted. 0 times theorem prover too weak. 1793 trivial. 0 not checked. [2018-07-24 12:23:32,982 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 12:23:35,014 INFO L134 CoverageAnalysis]: Checked inductivity of 5090 backedges. 587 proven. 440 refuted. 0 times theorem prover too weak. 4063 trivial. 0 not checked. [2018-07-24 12:23:35,018 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 12:23:35,020 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5, 5, 5] total 24 [2018-07-24 12:23:35,020 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 12:23:35,023 INFO L450 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-07-24 12:23:35,023 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-07-24 12:23:35,023 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2018-07-24 12:23:35,023 INFO L87 Difference]: Start difference. First operand 27705 states and 28663 transitions. Second operand 18 states. Received shutdown request... [2018-07-24 12:23:35,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-24 12:23:35,818 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 12:23:35,830 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 12:23:35,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 12:23:35 BoogieIcfgContainer [2018-07-24 12:23:35,830 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 12:23:35,831 INFO L168 Benchmark]: Toolchain (without parser) took 227675.36 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 851.6 MB. Max. memory is 7.1 GB. [2018-07-24 12:23:35,834 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 12:23:35,834 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1266.21 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-07-24 12:23:35,835 INFO L168 Benchmark]: Boogie Procedure Inliner took 209.67 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-07-24 12:23:35,840 INFO L168 Benchmark]: Boogie Preprocessor took 489.89 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 830.5 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -978.6 MB). Peak memory consumption was 61.3 MB. Max. memory is 7.1 GB. [2018-07-24 12:23:35,843 INFO L168 Benchmark]: RCFGBuilder took 6598.74 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: 300.2 MB). Peak memory consumption was 300.2 MB. Max. memory is 7.1 GB. [2018-07-24 12:23:35,844 INFO L168 Benchmark]: TraceAbstraction took 219105.98 ms. Allocated memory was 2.4 GB in the beginning and 4.1 GB in the end (delta: 1.7 GB). Free memory was 2.0 GB in the beginning and 3.1 GB in the end (delta: -1.2 GB). Peak memory consumption was 572.7 MB. Max. memory is 7.1 GB. [2018-07-24 12:23:35,847 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1266.21 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 209.67 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 489.89 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 830.5 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -978.6 MB). Peak memory consumption was 61.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6598.74 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: 300.2 MB). Peak memory consumption was 300.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 219105.98 ms. Allocated memory was 2.4 GB in the beginning and 4.1 GB in the end (delta: 1.7 GB). Free memory was 2.0 GB in the beginning and 3.1 GB in the end (delta: -1.2 GB). Peak memory consumption was 572.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 34]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 34). Cancelled while BasicCegarLoop was constructing difference of abstraction (27705states) and interpolant automaton (currently 5 states, 18 states before enhancement), while ReachableStatesComputation was computing reachable states (146 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 219.0s OverallTime, 15 OverallIterations, 10 TraceHistogramMax, 117.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2107 SDtfs, 35362 SDslu, 3497 SDs, 0 SdLazy, 71616 SolverSat, 10205 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 91.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48059 GetRequests, 47646 SyntacticMatches, 49 SemanticMatches, 364 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3442 ImplicationChecksByTransitivity, 22.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33071occurred in iteration=13, 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: 4.5s AutomataMinimizationTime, 14 MinimizatonAttempts, 9683 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.2s SsaConstructionTime, 11.3s SatisfiabilityAnalysisTime, 66.2s InterpolantComputationTime, 37071 NumberOfCodeBlocks, 37071 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 60818 ConstructedInterpolants, 14 QuantifiedInterpolants, 230930872 SizeOfPredicates, 16 NumberOfNonLiveVariables, 31734 ConjunctsInSsa, 175 ConjunctsInUnsatCore, 57 InterpolantComputations, 7 PerfectInterpolantSequences, 148947/159715 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/Problem16_label43_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_12-23-35-864.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem16_label43_false-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_12-23-35-864.csv Completed graceful shutdown