java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label41_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 17:23:50,079 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 17:23:50,081 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 17:23:50,098 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 17:23:50,099 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 17:23:50,101 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 17:23:50,103 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 17:23:50,105 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 17:23:50,107 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 17:23:50,116 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 17:23:50,117 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 17:23:50,117 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 17:23:50,118 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 17:23:50,121 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 17:23:50,123 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 17:23:50,123 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 17:23:50,124 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 17:23:50,129 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 17:23:50,131 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 17:23:50,134 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 17:23:50,135 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 17:23:50,138 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 17:23:50,142 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 17:23:50,142 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 17:23:50,142 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 17:23:50,143 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 17:23:50,145 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 17:23:50,145 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 17:23:50,146 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 17:23:50,149 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 17:23:50,149 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 17:23:50,151 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 17:23:50,151 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 17:23:50,151 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 17:23:50,152 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 17:23:50,154 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 17:23:50,155 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-14 17:23:50,189 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 17:23:50,190 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 17:23:50,191 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 17:23:50,191 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 17:23:50,191 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 17:23:50,193 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 17:23:50,193 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 17:23:50,193 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 17:23:50,193 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 17:23:50,193 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 17:23:50,193 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 17:23:50,194 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 17:23:50,196 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 17:23:50,196 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 17:23:50,196 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 17:23:50,196 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 17:23:50,196 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 17:23:50,196 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 17:23:50,197 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 17:23:50,197 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 17:23:50,197 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 17:23:50,197 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 17:23:50,199 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 17:23:50,199 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:23:50,199 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 17:23:50,199 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 17:23:50,199 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 17:23:50,200 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 17:23:50,200 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 17:23:50,200 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 17:23:50,200 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 17:23:50,200 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 17:23:50,200 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 17:23:50,253 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 17:23:50,270 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 17:23:50,274 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 17:23:50,276 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 17:23:50,276 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 17:23:50,277 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label41_true-unreach-call.c [2018-09-14 17:23:50,628 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecfad497b/363fd1de4f1c4205bcf07a7975d3e630/FLAGdd8e4e4f4 [2018-09-14 17:23:51,093 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 17:23:51,094 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label41_true-unreach-call.c [2018-09-14 17:23:51,135 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecfad497b/363fd1de4f1c4205bcf07a7975d3e630/FLAGdd8e4e4f4 [2018-09-14 17:23:51,159 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecfad497b/363fd1de4f1c4205bcf07a7975d3e630 [2018-09-14 17:23:51,172 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 17:23:51,179 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 17:23:51,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 17:23:51,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 17:23:51,190 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 17:23:51,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:23:51" (1/1) ... [2018-09-14 17:23:51,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56ecc5dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:23:51, skipping insertion in model container [2018-09-14 17:23:51,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:23:51" (1/1) ... [2018-09-14 17:23:51,209 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 17:23:52,618 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:23:52,639 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 17:23:53,283 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:23:53,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:23:53 WrapperNode [2018-09-14 17:23:53,579 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 17:23:53,580 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 17:23:53,580 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 17:23:53,580 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 17:23:53,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:23:53" (1/1) ... [2018-09-14 17:23:53,695 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:23:53" (1/1) ... [2018-09-14 17:23:54,443 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 17:23:54,444 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 17:23:54,444 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 17:23:54,444 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 17:23:54,456 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:23:53" (1/1) ... [2018-09-14 17:23:54,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:23:53" (1/1) ... [2018-09-14 17:23:54,494 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:23:53" (1/1) ... [2018-09-14 17:23:54,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:23:53" (1/1) ... [2018-09-14 17:23:54,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:23:53" (1/1) ... [2018-09-14 17:23:54,667 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:23:53" (1/1) ... [2018-09-14 17:23:54,720 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:23:53" (1/1) ... [2018-09-14 17:23:54,802 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 17:23:54,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 17:23:54,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 17:23:54,803 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 17:23:54,804 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:23:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:23:54,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 17:23:54,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 17:23:54,877 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-14 17:23:54,877 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-14 17:23:54,877 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-14 17:23:54,877 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-14 17:23:54,877 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 17:23:54,878 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 17:23:54,878 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 17:23:54,878 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 17:23:54,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 17:23:54,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 17:23:54,878 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 17:23:54,879 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 17:24:05,062 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 17:24:05,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:24:05 BoogieIcfgContainer [2018-09-14 17:24:05,063 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 17:24:05,064 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 17:24:05,064 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 17:24:05,067 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 17:24:05,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 05:23:51" (1/3) ... [2018-09-14 17:24:05,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3623a087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:24:05, skipping insertion in model container [2018-09-14 17:24:05,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:23:53" (2/3) ... [2018-09-14 17:24:05,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3623a087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:24:05, skipping insertion in model container [2018-09-14 17:24:05,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:24:05" (3/3) ... [2018-09-14 17:24:05,071 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label41_true-unreach-call.c [2018-09-14 17:24:05,081 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 17:24:05,091 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 17:24:05,156 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 17:24:05,157 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 17:24:05,157 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 17:24:05,157 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 17:24:05,157 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 17:24:05,157 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 17:24:05,158 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 17:24:05,158 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 17:24:05,158 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 17:24:05,204 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-09-14 17:24:05,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-09-14 17:24:05,214 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:24:05,216 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:24:05,217 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:24:05,222 INFO L82 PathProgramCache]: Analyzing trace with hash -366069493, now seen corresponding path program 1 times [2018-09-14 17:24:05,225 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:24:05,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:24:05,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:24:05,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:24:05,275 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:24:05,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:24:05,709 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:24:05,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:24:05,832 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:24:05,833 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 17:24:05,833 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:24:05,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:24:05,857 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:24:05,857 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:24:05,860 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-09-14 17:24:13,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:24:13,510 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-09-14 17:24:13,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:24:13,515 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2018-09-14 17:24:13,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:24:13,566 INFO L225 Difference]: With dead ends: 2446 [2018-09-14 17:24:13,567 INFO L226 Difference]: Without dead ends: 1604 [2018-09-14 17:24:13,583 INFO L604 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 [2018-09-14 17:24:13,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-09-14 17:24:13,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-09-14 17:24:13,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-09-14 17:24:13,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2861 transitions. [2018-09-14 17:24:13,775 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2861 transitions. Word has length 59 [2018-09-14 17:24:13,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:24:13,776 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2861 transitions. [2018-09-14 17:24:13,776 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:24:13,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2861 transitions. [2018-09-14 17:24:13,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-09-14 17:24:13,790 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:24:13,791 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:24:13,791 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:24:13,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1469474424, now seen corresponding path program 1 times [2018-09-14 17:24:13,791 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:24:13,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:24:13,794 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:24:13,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:24:13,794 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:24:13,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:24:14,194 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:24:14,830 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 45 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:24:14,831 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:24:14,831 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:24:14,848 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:24:14,849 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:24:14,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:24:14,960 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:24:15,141 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-14 17:24:15,142 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:24:15,720 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-14 17:24:15,755 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:24:15,755 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 11 [2018-09-14 17:24:15,755 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:24:15,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:24:15,758 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:24:15,758 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:24:15,758 INFO L87 Difference]: Start difference. First operand 1604 states and 2861 transitions. Second operand 4 states. [2018-09-14 17:24:25,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:24:25,570 INFO L93 Difference]: Finished difference Result 4760 states and 8592 transitions. [2018-09-14 17:24:25,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:24:25,571 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2018-09-14 17:24:25,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:24:25,593 INFO L225 Difference]: With dead ends: 4760 [2018-09-14 17:24:25,593 INFO L226 Difference]: Without dead ends: 3162 [2018-09-14 17:24:25,601 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 265 SyntacticMatches, 5 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:24:25,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3162 states. [2018-09-14 17:24:25,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3162 to 3162. [2018-09-14 17:24:25,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3162 states. [2018-09-14 17:24:25,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3162 states to 3162 states and 5219 transitions. [2018-09-14 17:24:25,683 INFO L78 Accepts]: Start accepts. Automaton has 3162 states and 5219 transitions. Word has length 135 [2018-09-14 17:24:25,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:24:25,684 INFO L480 AbstractCegarLoop]: Abstraction has 3162 states and 5219 transitions. [2018-09-14 17:24:25,684 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:24:25,684 INFO L276 IsEmpty]: Start isEmpty. Operand 3162 states and 5219 transitions. [2018-09-14 17:24:25,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-09-14 17:24:25,690 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:24:25,690 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:24:25,691 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:24:25,691 INFO L82 PathProgramCache]: Analyzing trace with hash -585566480, now seen corresponding path program 1 times [2018-09-14 17:24:25,691 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:24:25,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:24:25,692 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:24:25,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:24:25,693 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:24:25,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:24:25,934 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:24:25,935 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:24:25,935 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:24:25,935 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:24:25,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:24:25,936 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:24:25,936 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:24:25,936 INFO L87 Difference]: Start difference. First operand 3162 states and 5219 transitions. Second operand 6 states. [2018-09-14 17:24:48,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:24:48,287 INFO L93 Difference]: Finished difference Result 12715 states and 21689 transitions. [2018-09-14 17:24:48,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-14 17:24:48,291 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 155 [2018-09-14 17:24:48,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:24:48,356 INFO L225 Difference]: With dead ends: 12715 [2018-09-14 17:24:48,356 INFO L226 Difference]: Without dead ends: 9559 [2018-09-14 17:24:48,383 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-14 17:24:48,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9559 states. [2018-09-14 17:24:48,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9559 to 9471. [2018-09-14 17:24:48,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9471 states. [2018-09-14 17:24:48,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9471 states to 9471 states and 14405 transitions. [2018-09-14 17:24:48,705 INFO L78 Accepts]: Start accepts. Automaton has 9471 states and 14405 transitions. Word has length 155 [2018-09-14 17:24:48,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:24:48,705 INFO L480 AbstractCegarLoop]: Abstraction has 9471 states and 14405 transitions. [2018-09-14 17:24:48,707 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:24:48,707 INFO L276 IsEmpty]: Start isEmpty. Operand 9471 states and 14405 transitions. [2018-09-14 17:24:48,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-09-14 17:24:48,712 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:24:48,712 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:24:48,712 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:24:48,713 INFO L82 PathProgramCache]: Analyzing trace with hash -447818083, now seen corresponding path program 1 times [2018-09-14 17:24:48,713 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:24:48,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:24:48,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:24:48,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:24:48,714 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:24:48,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:24:49,057 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:24:49,057 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:24:49,057 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 17:24:49,058 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:24:49,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:24:49,059 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:24:49,059 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 17:24:49,059 INFO L87 Difference]: Start difference. First operand 9471 states and 14405 transitions. Second operand 5 states. [2018-09-14 17:24:59,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:24:59,183 INFO L93 Difference]: Finished difference Result 28935 states and 45966 transitions. [2018-09-14 17:24:59,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:24:59,185 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2018-09-14 17:24:59,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:24:59,297 INFO L225 Difference]: With dead ends: 28935 [2018-09-14 17:24:59,297 INFO L226 Difference]: Without dead ends: 19470 [2018-09-14 17:24:59,335 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:24:59,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19470 states. [2018-09-14 17:25:00,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19470 to 19300. [2018-09-14 17:25:00,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19300 states. [2018-09-14 17:25:00,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19300 states to 19300 states and 28223 transitions. [2018-09-14 17:25:00,063 INFO L78 Accepts]: Start accepts. Automaton has 19300 states and 28223 transitions. Word has length 170 [2018-09-14 17:25:00,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:25:00,064 INFO L480 AbstractCegarLoop]: Abstraction has 19300 states and 28223 transitions. [2018-09-14 17:25:00,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:25:00,064 INFO L276 IsEmpty]: Start isEmpty. Operand 19300 states and 28223 transitions. [2018-09-14 17:25:00,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-09-14 17:25:00,068 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:25:00,069 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:25:00,069 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:25:00,069 INFO L82 PathProgramCache]: Analyzing trace with hash 662579764, now seen corresponding path program 1 times [2018-09-14 17:25:00,069 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:25:00,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:25:00,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:25:00,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:25:00,071 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:25:00,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:25:00,359 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:25:00,746 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:25:00,746 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:25:00,746 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:25:00,747 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:25:00,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:25:00,748 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:25:00,748 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:25:00,749 INFO L87 Difference]: Start difference. First operand 19300 states and 28223 transitions. Second operand 6 states. [2018-09-14 17:25:09,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:25:09,488 INFO L93 Difference]: Finished difference Result 49731 states and 77433 transitions. [2018-09-14 17:25:09,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:25:09,489 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 173 [2018-09-14 17:25:09,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:25:09,605 INFO L225 Difference]: With dead ends: 49731 [2018-09-14 17:25:09,605 INFO L226 Difference]: Without dead ends: 30437 [2018-09-14 17:25:09,987 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:25:10,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30437 states. [2018-09-14 17:25:10,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30437 to 30121. [2018-09-14 17:25:10,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30121 states. [2018-09-14 17:25:10,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30121 states to 30121 states and 44079 transitions. [2018-09-14 17:25:10,753 INFO L78 Accepts]: Start accepts. Automaton has 30121 states and 44079 transitions. Word has length 173 [2018-09-14 17:25:10,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:25:10,753 INFO L480 AbstractCegarLoop]: Abstraction has 30121 states and 44079 transitions. [2018-09-14 17:25:10,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:25:10,753 INFO L276 IsEmpty]: Start isEmpty. Operand 30121 states and 44079 transitions. [2018-09-14 17:25:10,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-09-14 17:25:10,758 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:25:10,758 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:25:10,758 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:25:10,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1991671, now seen corresponding path program 1 times [2018-09-14 17:25:10,759 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:25:10,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:25:10,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:25:10,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:25:10,760 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:25:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:25:10,991 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:25:10,991 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:25:10,991 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:25:10,991 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:25:10,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:25:10,992 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:25:10,992 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:25:10,993 INFO L87 Difference]: Start difference. First operand 30121 states and 44079 transitions. Second operand 4 states. [2018-09-14 17:25:20,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:25:20,713 INFO L93 Difference]: Finished difference Result 75803 states and 114483 transitions. [2018-09-14 17:25:20,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:25:20,716 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 208 [2018-09-14 17:25:20,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:25:20,851 INFO L225 Difference]: With dead ends: 75803 [2018-09-14 17:25:20,851 INFO L226 Difference]: Without dead ends: 45688 [2018-09-14 17:25:20,958 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:25:20,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45688 states. [2018-09-14 17:25:21,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45688 to 45665. [2018-09-14 17:25:21,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45665 states. [2018-09-14 17:25:21,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45665 states to 45665 states and 62079 transitions. [2018-09-14 17:25:21,902 INFO L78 Accepts]: Start accepts. Automaton has 45665 states and 62079 transitions. Word has length 208 [2018-09-14 17:25:21,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:25:21,903 INFO L480 AbstractCegarLoop]: Abstraction has 45665 states and 62079 transitions. [2018-09-14 17:25:21,903 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:25:21,903 INFO L276 IsEmpty]: Start isEmpty. Operand 45665 states and 62079 transitions. [2018-09-14 17:25:21,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-09-14 17:25:21,917 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:25:21,918 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:25:21,918 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:25:21,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1033146419, now seen corresponding path program 1 times [2018-09-14 17:25:21,919 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:25:21,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:25:21,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:25:21,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:25:21,927 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:25:21,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:25:22,251 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:25:22,537 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:25:22,538 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:25:22,538 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:25:22,538 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:25:22,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:25:22,539 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:25:22,539 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:25:22,539 INFO L87 Difference]: Start difference. First operand 45665 states and 62079 transitions. Second operand 6 states. [2018-09-14 17:25:30,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:25:30,125 INFO L93 Difference]: Finished difference Result 102898 states and 144033 transitions. [2018-09-14 17:25:30,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:25:30,126 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 258 [2018-09-14 17:25:30,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:25:30,325 INFO L225 Difference]: With dead ends: 102898 [2018-09-14 17:25:30,325 INFO L226 Difference]: Without dead ends: 57239 [2018-09-14 17:25:30,412 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:25:30,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57239 states. [2018-09-14 17:25:31,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57239 to 57152. [2018-09-14 17:25:31,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57152 states. [2018-09-14 17:25:31,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57152 states to 57152 states and 74105 transitions. [2018-09-14 17:25:31,504 INFO L78 Accepts]: Start accepts. Automaton has 57152 states and 74105 transitions. Word has length 258 [2018-09-14 17:25:31,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:25:31,504 INFO L480 AbstractCegarLoop]: Abstraction has 57152 states and 74105 transitions. [2018-09-14 17:25:31,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:25:31,505 INFO L276 IsEmpty]: Start isEmpty. Operand 57152 states and 74105 transitions. [2018-09-14 17:25:31,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2018-09-14 17:25:31,556 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:25:31,556 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-14 17:25:31,557 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:25:31,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1330079873, now seen corresponding path program 1 times [2018-09-14 17:25:31,557 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:25:31,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:25:31,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:25:31,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:25:31,559 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:25:31,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:25:32,332 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 274 proven. 110 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-09-14 17:25:32,333 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:25:32,333 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-14 17:25:32,350 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:25:32,351 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:25:32,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:25:32,514 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:25:33,082 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 438 proven. 2 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2018-09-14 17:25:33,083 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:25:33,870 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 274 proven. 110 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-09-14 17:25:33,892 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:25:33,893 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 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 [2018-09-14 17:25:33,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:25:33,909 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:25:34,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:25:34,173 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:25:34,312 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 438 proven. 2 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2018-09-14 17:25:34,313 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:25:34,694 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 274 proven. 110 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-09-14 17:25:34,697 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:25:34,697 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 13 [2018-09-14 17:25:34,698 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:25:34,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:25:34,700 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:25:34,701 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-09-14 17:25:34,701 INFO L87 Difference]: Start difference. First operand 57152 states and 74105 transitions. Second operand 9 states. [2018-09-14 17:25:52,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:25:52,965 INFO L93 Difference]: Finished difference Result 222289 states and 328875 transitions. [2018-09-14 17:25:52,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-14 17:25:52,965 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 434 [2018-09-14 17:25:52,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:25:53,653 INFO L225 Difference]: With dead ends: 222289 [2018-09-14 17:25:53,653 INFO L226 Difference]: Without dead ends: 165143 [2018-09-14 17:25:54,641 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1754 GetRequests, 1731 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2018-09-14 17:25:54,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165143 states. [2018-09-14 17:25:56,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165143 to 164386. [2018-09-14 17:25:56,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164386 states. [2018-09-14 17:25:57,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164386 states to 164386 states and 223311 transitions. [2018-09-14 17:25:57,414 INFO L78 Accepts]: Start accepts. Automaton has 164386 states and 223311 transitions. Word has length 434 [2018-09-14 17:25:57,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:25:57,415 INFO L480 AbstractCegarLoop]: Abstraction has 164386 states and 223311 transitions. [2018-09-14 17:25:57,415 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:25:57,415 INFO L276 IsEmpty]: Start isEmpty. Operand 164386 states and 223311 transitions. [2018-09-14 17:25:57,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2018-09-14 17:25:57,567 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:25:57,568 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:25:57,568 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:25:57,568 INFO L82 PathProgramCache]: Analyzing trace with hash -299769905, now seen corresponding path program 1 times [2018-09-14 17:25:57,568 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:25:57,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:25:57,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:25:57,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:25:57,570 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:25:57,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:25:59,311 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 192 proven. 139 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2018-09-14 17:25:59,311 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:25:59,311 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:25:59,319 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:25:59,320 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:25:59,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:25:59,455 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:25:59,696 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 419 proven. 2 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2018-09-14 17:25:59,697 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:25:59,988 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 243 proven. 83 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2018-09-14 17:26:00,011 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:26:00,012 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:26:00,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:26:00,031 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:26:00,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:26:00,356 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:26:00,533 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 419 proven. 2 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2018-09-14 17:26:00,533 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:26:00,900 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 243 proven. 83 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2018-09-14 17:26:00,902 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:26:00,903 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5, 5, 5] total 17 [2018-09-14 17:26:00,903 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:26:00,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-14 17:26:00,904 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-14 17:26:00,905 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2018-09-14 17:26:00,905 INFO L87 Difference]: Start difference. First operand 164386 states and 223311 transitions. Second operand 14 states. [2018-09-14 17:26:50,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:26:50,680 INFO L93 Difference]: Finished difference Result 385716 states and 590891 transitions. [2018-09-14 17:26:50,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-09-14 17:26:50,681 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 492 [2018-09-14 17:26:50,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:26:51,388 INFO L225 Difference]: With dead ends: 385716 [2018-09-14 17:26:51,388 INFO L226 Difference]: Without dead ends: 210463 [2018-09-14 17:26:51,876 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2033 GetRequests, 1986 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=448, Invalid=1444, Unknown=0, NotChecked=0, Total=1892 [2018-09-14 17:26:51,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210463 states. [2018-09-14 17:26:55,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210463 to 207872. [2018-09-14 17:26:55,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207872 states. [2018-09-14 17:26:55,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207872 states to 207872 states and 260711 transitions. [2018-09-14 17:26:55,894 INFO L78 Accepts]: Start accepts. Automaton has 207872 states and 260711 transitions. Word has length 492 [2018-09-14 17:26:55,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:26:55,895 INFO L480 AbstractCegarLoop]: Abstraction has 207872 states and 260711 transitions. [2018-09-14 17:26:55,895 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-14 17:26:55,895 INFO L276 IsEmpty]: Start isEmpty. Operand 207872 states and 260711 transitions. [2018-09-14 17:26:56,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1042 [2018-09-14 17:26:56,280 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:26:56,281 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:26:56,281 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:26:56,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1880101100, now seen corresponding path program 1 times [2018-09-14 17:26:56,282 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:26:56,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:26:56,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:26:56,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:26:56,283 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:26:56,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:26:57,666 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:26:58,150 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 219 proven. 393 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2018-09-14 17:26:58,151 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:26:58,151 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:26:58,159 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:26:58,159 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:26:58,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:26:58,442 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:27:03,982 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 596 proven. 2 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2018-09-14 17:27:03,982 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:27:04,724 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 312 proven. 171 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2018-09-14 17:27:04,745 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:27:04,746 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:27:04,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:27:04,762 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:27:05,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:27:05,384 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:27:05,844 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 503 proven. 2 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2018-09-14 17:27:05,845 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:27:06,656 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 221 proven. 380 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-09-14 17:27:06,659 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:27:06,662 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-09-14 17:27:06,662 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:27:06,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:27:06,664 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:27:06,665 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2018-09-14 17:27:06,665 INFO L87 Difference]: Start difference. First operand 207872 states and 260711 transitions. Second operand 9 states. [2018-09-14 17:27:27,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:27:27,053 INFO L93 Difference]: Finished difference Result 533527 states and 691731 transitions. [2018-09-14 17:27:27,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-09-14 17:27:27,054 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1041 [2018-09-14 17:27:27,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:27:28,002 INFO L225 Difference]: With dead ends: 533527 [2018-09-14 17:27:28,002 INFO L226 Difference]: Without dead ends: 325666 [2018-09-14 17:27:28,374 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4221 GetRequests, 4179 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=320, Invalid=1240, Unknown=0, NotChecked=0, Total=1560 [2018-09-14 17:27:28,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325666 states. [2018-09-14 17:27:33,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325666 to 324212. [2018-09-14 17:27:33,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324212 states. [2018-09-14 17:27:34,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324212 states to 324212 states and 386447 transitions. [2018-09-14 17:27:34,327 INFO L78 Accepts]: Start accepts. Automaton has 324212 states and 386447 transitions. Word has length 1041 [2018-09-14 17:27:34,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:27:34,327 INFO L480 AbstractCegarLoop]: Abstraction has 324212 states and 386447 transitions. [2018-09-14 17:27:34,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:27:34,327 INFO L276 IsEmpty]: Start isEmpty. Operand 324212 states and 386447 transitions. [2018-09-14 17:27:34,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1068 [2018-09-14 17:27:34,715 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:27:34,715 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:27:34,716 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:27:34,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1615735256, now seen corresponding path program 1 times [2018-09-14 17:27:34,716 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:27:34,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:27:34,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:27:34,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:27:34,718 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:27:34,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:27:37,147 INFO L134 CoverageAnalysis]: Checked inductivity of 831 backedges. 21 proven. 212 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2018-09-14 17:27:37,147 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:27:37,147 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:27:37,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:27:37,158 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:27:37,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:27:37,457 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:27:39,257 INFO L134 CoverageAnalysis]: Checked inductivity of 831 backedges. 409 proven. 150 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2018-09-14 17:27:39,257 INFO L316 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2018-09-14 17:27:41,457 INFO L134 CoverageAnalysis]: Checked inductivity of 831 backedges. 553 proven. 6 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2018-09-14 17:27:41,479 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:27:41,480 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:27:41,496 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:27:41,496 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:27:42,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:27:42,149 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:27:42,174 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-09-14 17:27:42,375 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:27:42,376 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 17:27:42,381 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 17:27:42,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 05:27:42 BoogieIcfgContainer [2018-09-14 17:27:42,381 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 17:27:42,382 INFO L168 Benchmark]: Toolchain (without parser) took 231209.09 ms. Allocated memory was 1.5 GB in the beginning and 4.9 GB in the end (delta: 3.4 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -298.7 MB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. [2018-09-14 17:27:42,383 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 17:27:42,384 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2399.38 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-09-14 17:27:42,384 INFO L168 Benchmark]: Boogie Procedure Inliner took 863.77 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 883.4 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 126.5 MB. Max. memory is 7.1 GB. [2018-09-14 17:27:42,387 INFO L168 Benchmark]: Boogie Preprocessor took 357.90 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 41.4 MB). Peak memory consumption was 41.4 MB. Max. memory is 7.1 GB. [2018-09-14 17:27:42,388 INFO L168 Benchmark]: RCFGBuilder took 10260.60 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 654.2 MB). Peak memory consumption was 654.2 MB. Max. memory is 7.1 GB. [2018-09-14 17:27:42,395 INFO L168 Benchmark]: TraceAbstraction took 217317.48 ms. Allocated memory was 2.4 GB in the beginning and 4.9 GB in the end (delta: 2.5 GB). Free memory was 1.6 GB in the beginning and 1.7 GB in the end (delta: -106.9 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-09-14 17:27:42,404 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2399.38 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 863.77 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 883.4 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 126.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 357.90 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 41.4 MB). Peak memory consumption was 41.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10260.60 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 654.2 MB). Peak memory consumption was 654.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 217317.48 ms. Allocated memory was 2.4 GB in the beginning and 4.9 GB in the end (delta: 2.5 GB). Free memory was 1.6 GB in the beginning and 1.7 GB in the end (delta: -106.9 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 168]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 168). Cancelled while BasicCegarLoop was analyzing trace of length 1068 with TraceHistMax 5, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 13 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 217.2s OverallTime, 11 OverallIterations, 5 TraceHistogramMax, 169.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3066 SDtfs, 39012 SDslu, 2993 SDs, 0 SdLazy, 90517 SolverSat, 19523 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 128.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8337 GetRequests, 8176 SyntacticMatches, 24 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 940 ImplicationChecksByTransitivity, 6.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=324212occurred in iteration=10, 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: 16.8s AutomataMinimizationTime, 10 MinimizatonAttempts, 5486 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 16.8s InterpolantComputationTime, 7194 NumberOfCodeBlocks, 7194 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 11239 ConstructedInterpolants, 0 QuantifiedInterpolants, 15644648 SizeOfPredicates, 6 NumberOfNonLiveVariables, 5993 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 24 InterpolantComputations, 7 PerfectInterpolantSequences, 7520/9166 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/Problem12_label41_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_17-27-42-418.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label41_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_17-27-42-418.csv Completed graceful shutdown