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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label59_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 09:22:03,063 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 09:22:03,065 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 09:22:03,079 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 09:22:03,079 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 09:22:03,080 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 09:22:03,081 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 09:22:03,083 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 09:22:03,086 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 09:22:03,087 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 09:22:03,088 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 09:22:03,089 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 09:22:03,089 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 09:22:03,091 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 09:22:03,092 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 09:22:03,093 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 09:22:03,093 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 09:22:03,095 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 09:22:03,097 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 09:22:03,099 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 09:22:03,100 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 09:22:03,101 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 09:22:03,104 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 09:22:03,104 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 09:22:03,104 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 09:22:03,105 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 09:22:03,106 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 09:22:03,107 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 09:22:03,108 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 09:22:03,109 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 09:22:03,109 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 09:22:03,110 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 09:22:03,110 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 09:22:03,111 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 09:22:03,112 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 09:22:03,112 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 09:22:03,113 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 09:22:03,142 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 09:22:03,143 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 09:22:03,144 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 09:22:03,144 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 09:22:03,144 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 09:22:03,144 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 09:22:03,145 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 09:22:03,145 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 09:22:03,145 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 09:22:03,145 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 09:22:03,146 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 09:22:03,146 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 09:22:03,146 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 09:22:03,146 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 09:22:03,147 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 09:22:03,147 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 09:22:03,147 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 09:22:03,148 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 09:22:03,148 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 09:22:03,148 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 09:22:03,149 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 09:22:03,149 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 09:22:03,149 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 09:22:03,149 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 09:22:03,150 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 09:22:03,150 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 09:22:03,150 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:22:03,150 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 09:22:03,150 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 09:22:03,151 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 09:22:03,151 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 09:22:03,151 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 09:22:03,151 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 09:22:03,151 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 09:22:03,152 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 09:22:03,152 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 09:22:03,197 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 09:22:03,214 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 09:22:03,218 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 09:22:03,220 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 09:22:03,220 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 09:22:03,221 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label59_true-unreach-call.c [2018-11-07 09:22:03,288 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/566379691/dddf6f127acc49eab1c0bb64ef4507fc/FLAG4dce1f41a [2018-11-07 09:22:03,943 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 09:22:03,944 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label59_true-unreach-call.c [2018-11-07 09:22:03,965 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/566379691/dddf6f127acc49eab1c0bb64ef4507fc/FLAG4dce1f41a [2018-11-07 09:22:03,987 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/566379691/dddf6f127acc49eab1c0bb64ef4507fc [2018-11-07 09:22:03,999 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 09:22:04,001 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 09:22:04,009 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 09:22:04,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 09:22:04,013 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 09:22:04,014 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:22:03" (1/1) ... [2018-11-07 09:22:04,018 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e45d4c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:22:04, skipping insertion in model container [2018-11-07 09:22:04,018 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:22:03" (1/1) ... [2018-11-07 09:22:04,029 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 09:22:04,128 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 09:22:04,883 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:22:04,887 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 09:22:05,173 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:22:05,196 INFO L193 MainTranslator]: Completed translation [2018-11-07 09:22:05,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:22:05 WrapperNode [2018-11-07 09:22:05,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 09:22:05,198 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 09:22:05,198 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 09:22:05,199 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 09:22:05,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:22:05" (1/1) ... [2018-11-07 09:22:05,399 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:22:05" (1/1) ... [2018-11-07 09:22:05,417 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 09:22:05,418 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 09:22:05,418 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 09:22:05,418 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 09:22:05,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:22:05" (1/1) ... [2018-11-07 09:22:05,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:22:05" (1/1) ... [2018-11-07 09:22:05,441 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:22:05" (1/1) ... [2018-11-07 09:22:05,441 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:22:05" (1/1) ... [2018-11-07 09:22:05,528 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:22:05" (1/1) ... [2018-11-07 09:22:05,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:22:05" (1/1) ... [2018-11-07 09:22:05,567 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:22:05" (1/1) ... [2018-11-07 09:22:05,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 09:22:05,591 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 09:22:05,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 09:22:05,592 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 09:22:05,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:22:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:22:05,666 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 09:22:05,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 09:22:05,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 09:22:05,667 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 09:22:05,667 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 09:22:05,667 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 09:22:05,668 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 09:22:05,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 09:22:05,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 09:22:05,668 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 09:22:05,668 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 09:22:12,342 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 09:22:12,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:22:12 BoogieIcfgContainer [2018-11-07 09:22:12,343 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 09:22:12,345 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 09:22:12,345 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 09:22:12,349 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 09:22:12,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:22:03" (1/3) ... [2018-11-07 09:22:12,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12bbf81f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:22:12, skipping insertion in model container [2018-11-07 09:22:12,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:22:05" (2/3) ... [2018-11-07 09:22:12,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12bbf81f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:22:12, skipping insertion in model container [2018-11-07 09:22:12,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:22:12" (3/3) ... [2018-11-07 09:22:12,353 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label59_true-unreach-call.c [2018-11-07 09:22:12,362 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 09:22:12,371 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 09:22:12,386 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 09:22:12,427 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 09:22:12,428 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 09:22:12,428 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 09:22:12,428 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 09:22:12,428 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 09:22:12,428 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 09:22:12,429 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 09:22:12,429 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 09:22:12,462 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-07 09:22:12,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-11-07 09:22:12,474 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:22:12,477 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:22:12,479 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:22:12,486 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:22:12,487 INFO L82 PathProgramCache]: Analyzing trace with hash 371317715, now seen corresponding path program 1 times [2018-11-07 09:22:12,489 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:22:12,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:22:12,540 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:22:12,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:22:12,540 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:22:12,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:22:12,967 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-11-07 09:22:13,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:22:13,007 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:22:13,008 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:22:13,008 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:22:13,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:22:13,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:22:13,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:22:13,037 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 4 states. [2018-11-07 09:22:17,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:22:17,972 INFO L93 Difference]: Finished difference Result 1513 states and 2838 transitions. [2018-11-07 09:22:17,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:22:17,974 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2018-11-07 09:22:17,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:22:18,018 INFO L225 Difference]: With dead ends: 1513 [2018-11-07 09:22:18,018 INFO L226 Difference]: Without dead ends: 1097 [2018-11-07 09:22:18,030 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:22:18,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2018-11-07 09:22:18,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 744. [2018-11-07 09:22:18,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-07 09:22:18,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1357 transitions. [2018-11-07 09:22:18,154 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1357 transitions. Word has length 51 [2018-11-07 09:22:18,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:22:18,155 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1357 transitions. [2018-11-07 09:22:18,155 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:22:18,155 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1357 transitions. [2018-11-07 09:22:18,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-11-07 09:22:18,230 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:22:18,230 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:22:18,234 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:22:18,244 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:22:18,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1405398300, now seen corresponding path program 1 times [2018-11-07 09:22:18,245 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:22:18,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:22:18,246 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:22:18,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:22:18,246 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:22:18,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:22:18,626 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:22:18,626 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:22:18,626 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 09:22:18,627 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:22:18,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 09:22:18,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 09:22:18,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 09:22:18,630 INFO L87 Difference]: Start difference. First operand 744 states and 1357 transitions. Second operand 5 states. [2018-11-07 09:22:24,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:22:24,532 INFO L93 Difference]: Finished difference Result 2196 states and 4092 transitions. [2018-11-07 09:22:24,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:22:24,533 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2018-11-07 09:22:24,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:22:24,548 INFO L225 Difference]: With dead ends: 2196 [2018-11-07 09:22:24,549 INFO L226 Difference]: Without dead ends: 1458 [2018-11-07 09:22:24,553 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 09:22:24,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2018-11-07 09:22:24,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1438. [2018-11-07 09:22:24,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1438 states. [2018-11-07 09:22:24,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 2551 transitions. [2018-11-07 09:22:24,632 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 2551 transitions. Word has length 121 [2018-11-07 09:22:24,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:22:24,633 INFO L480 AbstractCegarLoop]: Abstraction has 1438 states and 2551 transitions. [2018-11-07 09:22:24,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 09:22:24,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 2551 transitions. [2018-11-07 09:22:24,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-11-07 09:22:24,642 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:22:24,642 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:22:24,643 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:22:24,643 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:22:24,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1847072879, now seen corresponding path program 1 times [2018-11-07 09:22:24,643 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:22:24,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:22:24,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:22:24,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:22:24,646 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:22:24,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:22:24,879 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:22:24,880 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:22:24,880 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:22:24,880 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:22:24,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:22:24,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:22:24,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:22:24,882 INFO L87 Difference]: Start difference. First operand 1438 states and 2551 transitions. Second operand 6 states. [2018-11-07 09:22:29,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:22:29,804 INFO L93 Difference]: Finished difference Result 4237 states and 7540 transitions. [2018-11-07 09:22:29,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:22:29,817 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2018-11-07 09:22:29,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:22:29,841 INFO L225 Difference]: With dead ends: 4237 [2018-11-07 09:22:29,841 INFO L226 Difference]: Without dead ends: 2805 [2018-11-07 09:22:29,852 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:22:29,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2805 states. [2018-11-07 09:22:29,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2805 to 2785. [2018-11-07 09:22:29,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2785 states. [2018-11-07 09:22:29,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2785 states to 2785 states and 4352 transitions. [2018-11-07 09:22:29,950 INFO L78 Accepts]: Start accepts. Automaton has 2785 states and 4352 transitions. Word has length 124 [2018-11-07 09:22:29,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:22:29,951 INFO L480 AbstractCegarLoop]: Abstraction has 2785 states and 4352 transitions. [2018-11-07 09:22:29,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:22:29,952 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states and 4352 transitions. [2018-11-07 09:22:29,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-11-07 09:22:29,953 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:22:29,954 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:22:29,954 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:22:29,954 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:22:29,954 INFO L82 PathProgramCache]: Analyzing trace with hash -674317012, now seen corresponding path program 1 times [2018-11-07 09:22:29,955 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:22:29,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:22:29,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:22:29,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:22:29,956 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:22:29,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:22:30,112 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:22:30,112 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:22:30,113 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:22:30,113 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:22:30,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:22:30,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:22:30,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:22:30,114 INFO L87 Difference]: Start difference. First operand 2785 states and 4352 transitions. Second operand 6 states. [2018-11-07 09:22:34,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:22:34,105 INFO L93 Difference]: Finished difference Result 6952 states and 11048 transitions. [2018-11-07 09:22:34,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:22:34,107 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-11-07 09:22:34,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:22:34,133 INFO L225 Difference]: With dead ends: 6952 [2018-11-07 09:22:34,133 INFO L226 Difference]: Without dead ends: 4173 [2018-11-07 09:22:34,149 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:22:34,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4173 states. [2018-11-07 09:22:34,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4173 to 4153. [2018-11-07 09:22:34,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4153 states. [2018-11-07 09:22:34,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4153 states to 4153 states and 5896 transitions. [2018-11-07 09:22:34,297 INFO L78 Accepts]: Start accepts. Automaton has 4153 states and 5896 transitions. Word has length 125 [2018-11-07 09:22:34,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:22:34,297 INFO L480 AbstractCegarLoop]: Abstraction has 4153 states and 5896 transitions. [2018-11-07 09:22:34,298 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:22:34,298 INFO L276 IsEmpty]: Start isEmpty. Operand 4153 states and 5896 transitions. [2018-11-07 09:22:34,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-11-07 09:22:34,299 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:22:34,299 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:22:34,300 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:22:34,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:22:34,300 INFO L82 PathProgramCache]: Analyzing trace with hash -710224295, now seen corresponding path program 1 times [2018-11-07 09:22:34,300 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:22:34,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:22:34,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:22:34,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:22:34,302 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:22:34,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:22:34,482 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:22:34,483 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:22:34,483 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:22:34,483 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:22:34,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:22:34,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:22:34,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:22:34,484 INFO L87 Difference]: Start difference. First operand 4153 states and 5896 transitions. Second operand 6 states. [2018-11-07 09:22:38,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:22:38,902 INFO L93 Difference]: Finished difference Result 11374 states and 16767 transitions. [2018-11-07 09:22:38,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:22:38,910 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 128 [2018-11-07 09:22:38,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:22:38,949 INFO L225 Difference]: With dead ends: 11374 [2018-11-07 09:22:38,949 INFO L226 Difference]: Without dead ends: 7227 [2018-11-07 09:22:38,981 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:22:38,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7227 states. [2018-11-07 09:22:39,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7227 to 7152. [2018-11-07 09:22:39,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7152 states. [2018-11-07 09:22:39,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7152 states to 7152 states and 9826 transitions. [2018-11-07 09:22:39,181 INFO L78 Accepts]: Start accepts. Automaton has 7152 states and 9826 transitions. Word has length 128 [2018-11-07 09:22:39,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:22:39,182 INFO L480 AbstractCegarLoop]: Abstraction has 7152 states and 9826 transitions. [2018-11-07 09:22:39,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:22:39,182 INFO L276 IsEmpty]: Start isEmpty. Operand 7152 states and 9826 transitions. [2018-11-07 09:22:39,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-11-07 09:22:39,185 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:22:39,185 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:22:39,185 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:22:39,185 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:22:39,186 INFO L82 PathProgramCache]: Analyzing trace with hash -727624727, now seen corresponding path program 1 times [2018-11-07 09:22:39,186 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:22:39,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:22:39,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:22:39,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:22:39,190 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:22:39,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:22:39,474 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:22:39,808 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:22:39,809 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:22:39,809 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:22:39,809 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:22:39,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:22:39,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:22:39,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:22:39,810 INFO L87 Difference]: Start difference. First operand 7152 states and 9826 transitions. Second operand 6 states. [2018-11-07 09:22:43,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:22:43,073 INFO L93 Difference]: Finished difference Result 17771 states and 25546 transitions. [2018-11-07 09:22:43,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:22:43,074 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2018-11-07 09:22:43,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:22:43,138 INFO L225 Difference]: With dead ends: 17771 [2018-11-07 09:22:43,138 INFO L226 Difference]: Without dead ends: 10625 [2018-11-07 09:22:43,168 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 [2018-11-07 09:22:43,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10625 states. [2018-11-07 09:22:43,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10625 to 10585. [2018-11-07 09:22:43,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10585 states. [2018-11-07 09:22:43,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10585 states to 10585 states and 13819 transitions. [2018-11-07 09:22:43,441 INFO L78 Accepts]: Start accepts. Automaton has 10585 states and 13819 transitions. Word has length 136 [2018-11-07 09:22:43,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:22:43,442 INFO L480 AbstractCegarLoop]: Abstraction has 10585 states and 13819 transitions. [2018-11-07 09:22:43,442 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:22:43,442 INFO L276 IsEmpty]: Start isEmpty. Operand 10585 states and 13819 transitions. [2018-11-07 09:22:43,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-11-07 09:22:43,447 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:22:43,447 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:22:43,453 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:22:43,453 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:22:43,453 INFO L82 PathProgramCache]: Analyzing trace with hash 2054227824, now seen corresponding path program 1 times [2018-11-07 09:22:43,454 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:22:43,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:22:43,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:22:43,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:22:43,455 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:22:43,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:22:43,855 WARN L179 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-07 09:22:43,980 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 21 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:22:43,981 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:22:43,981 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:22:43,982 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 144 with the following transitions: [2018-11-07 09:22:43,984 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [487], [489], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 09:22:44,041 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:22:44,041 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:22:44,849 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:22:44,851 INFO L272 AbstractInterpreter]: Visited 100 different actions 286 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 09:22:44,896 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:22:44,897 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:22:44,898 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:22:44,898 INFO L194 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 [2018-11-07 09:22:44,915 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:22:44,916 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:22:44,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:22:45,001 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:22:45,173 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:22:45,173 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:22:45,429 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:22:45,462 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:22:45,463 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2018-11-07 09:22:45,463 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:22:45,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:22:45,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:22:45,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:22:45,464 INFO L87 Difference]: Start difference. First operand 10585 states and 13819 transitions. Second operand 3 states. [2018-11-07 09:22:48,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:22:48,469 INFO L93 Difference]: Finished difference Result 21164 states and 27640 transitions. [2018-11-07 09:22:48,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:22:48,473 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 143 [2018-11-07 09:22:48,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:22:48,509 INFO L225 Difference]: With dead ends: 21164 [2018-11-07 09:22:48,509 INFO L226 Difference]: Without dead ends: 7903 [2018-11-07 09:22:48,612 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 286 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:22:48,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7903 states. [2018-11-07 09:22:48,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7903 to 7903. [2018-11-07 09:22:48,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7903 states. [2018-11-07 09:22:48,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7903 states to 7903 states and 8996 transitions. [2018-11-07 09:22:48,801 INFO L78 Accepts]: Start accepts. Automaton has 7903 states and 8996 transitions. Word has length 143 [2018-11-07 09:22:48,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:22:48,802 INFO L480 AbstractCegarLoop]: Abstraction has 7903 states and 8996 transitions. [2018-11-07 09:22:48,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:22:48,802 INFO L276 IsEmpty]: Start isEmpty. Operand 7903 states and 8996 transitions. [2018-11-07 09:22:48,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-11-07 09:22:48,806 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:22:48,806 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:22:48,807 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:22:48,807 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:22:48,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1721939931, now seen corresponding path program 1 times [2018-11-07 09:22:48,807 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:22:48,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:22:48,808 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:22:48,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:22:48,809 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:22:48,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:22:49,033 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:22:49,034 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:22:49,034 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:22:49,034 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:22:49,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:22:49,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:22:49,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:22:49,036 INFO L87 Difference]: Start difference. First operand 7903 states and 8996 transitions. Second operand 4 states. [2018-11-07 09:22:51,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:22:51,393 INFO L93 Difference]: Finished difference Result 23776 states and 27470 transitions. [2018-11-07 09:22:51,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:22:51,393 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 214 [2018-11-07 09:22:51,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:22:51,451 INFO L225 Difference]: With dead ends: 23776 [2018-11-07 09:22:51,451 INFO L226 Difference]: Without dead ends: 15879 [2018-11-07 09:22:51,492 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 [2018-11-07 09:22:51,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15879 states. [2018-11-07 09:22:51,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15879 to 15877. [2018-11-07 09:22:51,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15877 states. [2018-11-07 09:22:51,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15877 states to 15877 states and 17767 transitions. [2018-11-07 09:22:51,878 INFO L78 Accepts]: Start accepts. Automaton has 15877 states and 17767 transitions. Word has length 214 [2018-11-07 09:22:51,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:22:51,878 INFO L480 AbstractCegarLoop]: Abstraction has 15877 states and 17767 transitions. [2018-11-07 09:22:51,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:22:51,880 INFO L276 IsEmpty]: Start isEmpty. Operand 15877 states and 17767 transitions. [2018-11-07 09:22:51,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 675 [2018-11-07 09:22:51,957 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:22:51,958 INFO L375 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-11-07 09:22:51,958 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:22:51,958 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:22:51,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1257154816, now seen corresponding path program 1 times [2018-11-07 09:22:51,959 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:22:51,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:22:51,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:22:51,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:22:51,961 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:22:52,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:22:53,323 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 300 proven. 223 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2018-11-07 09:22:53,324 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:22:53,324 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:22:53,325 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 675 with the following transitions: [2018-11-07 09:22:53,326 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [487], [489], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1445], [1449], [1453], [1456], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 09:22:53,348 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:22:53,348 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:22:53,704 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:22:53,704 INFO L272 AbstractInterpreter]: Visited 273 different actions 273 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 09:22:53,744 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:22:53,745 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:22:54,835 INFO L227 lantSequenceWeakener]: Weakened 659 states. On average, predicates are now at 77.54% of their original sizes. [2018-11-07 09:22:54,835 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:22:55,098 INFO L415 sIntCurrentIteration]: We unified 673 AI predicates to 673 [2018-11-07 09:22:55,099 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:22:55,099 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:22:55,100 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-11-07 09:22:55,100 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:22:55,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:22:55,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:22:55,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:22:55,102 INFO L87 Difference]: Start difference. First operand 15877 states and 17767 transitions. Second operand 6 states. [2018-11-07 09:23:57,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:23:57,401 INFO L93 Difference]: Finished difference Result 32088 states and 35905 transitions. [2018-11-07 09:23:57,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 09:23:57,401 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 674 [2018-11-07 09:23:57,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:23:57,454 INFO L225 Difference]: With dead ends: 32088 [2018-11-07 09:23:57,454 INFO L226 Difference]: Without dead ends: 16217 [2018-11-07 09:23:57,487 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 674 GetRequests, 669 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 09:23:57,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16217 states. [2018-11-07 09:23:57,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16217 to 16215. [2018-11-07 09:23:57,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16215 states. [2018-11-07 09:23:57,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16215 states to 16215 states and 18109 transitions. [2018-11-07 09:23:57,793 INFO L78 Accepts]: Start accepts. Automaton has 16215 states and 18109 transitions. Word has length 674 [2018-11-07 09:23:57,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:23:57,794 INFO L480 AbstractCegarLoop]: Abstraction has 16215 states and 18109 transitions. [2018-11-07 09:23:57,794 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:23:57,794 INFO L276 IsEmpty]: Start isEmpty. Operand 16215 states and 18109 transitions. [2018-11-07 09:23:57,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 915 [2018-11-07 09:23:57,865 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:23:57,866 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:23:57,866 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:23:57,866 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:23:57,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1767722917, now seen corresponding path program 1 times [2018-11-07 09:23:57,867 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:23:57,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:23:57,868 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:23:57,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:23:57,868 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:23:57,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:23:58,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 473 proven. 223 refuted. 0 times theorem prover too weak. 816 trivial. 0 not checked. [2018-11-07 09:23:58,895 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:23:58,895 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:23:58,896 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 915 with the following transitions: [2018-11-07 09:23:58,896 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [487], [489], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1445], [1449], [1453], [1456], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 09:23:58,904 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:23:58,904 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:24:00,047 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:24:00,047 INFO L272 AbstractInterpreter]: Visited 278 different actions 1111 times. Merged at 10 different actions 34 times. Never widened. Found 8 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 09:24:00,088 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:24:00,088 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:24:00,088 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:24:00,088 INFO L194 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 [2018-11-07 09:24:00,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:24:00,103 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:24:00,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:24:00,360 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:24:00,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 1182 proven. 2 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2018-11-07 09:24:00,788 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:24:01,030 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-11-07 09:24:01,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 473 proven. 223 refuted. 0 times theorem prover too weak. 816 trivial. 0 not checked. [2018-11-07 09:24:01,640 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:24:01,640 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-07 09:24:01,641 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:24:01,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 09:24:01,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 09:24:01,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-11-07 09:24:01,643 INFO L87 Difference]: Start difference. First operand 16215 states and 18109 transitions. Second operand 9 states. [2018-11-07 09:24:07,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:24:07,325 INFO L93 Difference]: Finished difference Result 37460 states and 43412 transitions. [2018-11-07 09:24:07,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-07 09:24:07,326 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 914 [2018-11-07 09:24:07,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:24:07,444 INFO L225 Difference]: With dead ends: 37460 [2018-11-07 09:24:07,444 INFO L226 Difference]: Without dead ends: 21589 [2018-11-07 09:24:07,537 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1849 GetRequests, 1831 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2018-11-07 09:24:07,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21589 states. [2018-11-07 09:24:07,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21589 to 21191. [2018-11-07 09:24:07,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21191 states. [2018-11-07 09:24:08,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21191 states to 21191 states and 23605 transitions. [2018-11-07 09:24:08,024 INFO L78 Accepts]: Start accepts. Automaton has 21191 states and 23605 transitions. Word has length 914 [2018-11-07 09:24:08,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:24:08,025 INFO L480 AbstractCegarLoop]: Abstraction has 21191 states and 23605 transitions. [2018-11-07 09:24:08,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 09:24:08,025 INFO L276 IsEmpty]: Start isEmpty. Operand 21191 states and 23605 transitions. [2018-11-07 09:24:08,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1258 [2018-11-07 09:24:08,164 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:24:08,165 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:24:08,165 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:24:08,165 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:24:08,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1191924329, now seen corresponding path program 1 times [2018-11-07 09:24:08,166 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:24:08,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:24:08,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:24:08,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:24:08,167 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:24:08,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:24:11,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2709 backedges. 302 proven. 1572 refuted. 0 times theorem prover too weak. 835 trivial. 0 not checked. [2018-11-07 09:24:11,551 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:24:11,552 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:24:11,552 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1258 with the following transitions: [2018-11-07 09:24:11,552 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [487], [489], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [964], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1176], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1392], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1445], [1449], [1453], [1456], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 09:24:11,559 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:24:11,559 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:24:11,882 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:24:11,882 INFO L272 AbstractInterpreter]: Visited 278 different actions 550 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 09:24:11,918 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:24:11,918 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:24:13,217 INFO L227 lantSequenceWeakener]: Weakened 1254 states. On average, predicates are now at 77.45% of their original sizes. [2018-11-07 09:24:13,217 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:24:13,387 INFO L415 sIntCurrentIteration]: We unified 1256 AI predicates to 1256 [2018-11-07 09:24:13,387 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:24:13,388 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:24:13,388 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 22 [2018-11-07 09:24:13,388 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:24:13,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 09:24:13,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 09:24:13,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 09:24:13,391 INFO L87 Difference]: Start difference. First operand 21191 states and 23605 transitions. Second operand 10 states. [2018-11-07 09:25:25,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:25:25,870 INFO L93 Difference]: Finished difference Result 42381 states and 47224 transitions. [2018-11-07 09:25:25,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 09:25:25,870 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1257 [2018-11-07 09:25:25,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:25:25,959 INFO L225 Difference]: With dead ends: 42381 [2018-11-07 09:25:25,959 INFO L226 Difference]: Without dead ends: 21534 [2018-11-07 09:25:26,027 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 1264 GetRequests, 1248 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2018-11-07 09:25:26,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21534 states. [2018-11-07 09:25:26,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21534 to 21531. [2018-11-07 09:25:26,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21531 states. [2018-11-07 09:25:26,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21531 states to 21531 states and 23948 transitions. [2018-11-07 09:25:26,578 INFO L78 Accepts]: Start accepts. Automaton has 21531 states and 23948 transitions. Word has length 1257 [2018-11-07 09:25:26,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:25:26,580 INFO L480 AbstractCegarLoop]: Abstraction has 21531 states and 23948 transitions. [2018-11-07 09:25:26,580 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 09:25:26,580 INFO L276 IsEmpty]: Start isEmpty. Operand 21531 states and 23948 transitions. [2018-11-07 09:25:26,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1266 [2018-11-07 09:25:26,718 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:25:26,719 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-11-07 09:25:26,719 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:25:26,719 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:25:26,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1430197799, now seen corresponding path program 1 times [2018-11-07 09:25:26,721 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:25:26,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:25:26,722 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:25:26,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:25:26,722 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:25:26,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:25:27,401 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:25:28,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2725 backedges. 583 proven. 1177 refuted. 0 times theorem prover too weak. 965 trivial. 0 not checked. [2018-11-07 09:25:28,625 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:25:28,625 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:25:28,626 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1266 with the following transitions: [2018-11-07 09:25:28,626 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [487], [489], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [964], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1176], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1385], [1389], [1392], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1445], [1449], [1453], [1456], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 09:25:28,631 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:25:28,631 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:25:29,216 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:25:29,216 INFO L272 AbstractInterpreter]: Visited 279 different actions 823 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 09:25:29,224 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:25:29,224 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:25:29,224 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:25:29,224 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:25:29,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:25:29,234 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:25:29,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:25:29,539 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:25:30,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2725 backedges. 1888 proven. 2 refuted. 0 times theorem prover too weak. 835 trivial. 0 not checked. [2018-11-07 09:25:30,220 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:25:31,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2725 backedges. 727 proven. 250 refuted. 0 times theorem prover too weak. 1748 trivial. 0 not checked. [2018-11-07 09:25:31,176 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:25:31,177 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 13 [2018-11-07 09:25:31,177 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:25:31,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-07 09:25:31,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-07 09:25:31,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2018-11-07 09:25:31,180 INFO L87 Difference]: Start difference. First operand 21531 states and 23948 transitions. Second operand 12 states. [2018-11-07 09:25:36,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:25:36,774 INFO L93 Difference]: Finished difference Result 44294 states and 49371 transitions. [2018-11-07 09:25:36,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-07 09:25:36,774 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 1265 [2018-11-07 09:25:36,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:25:36,851 INFO L225 Difference]: With dead ends: 44294 [2018-11-07 09:25:36,852 INFO L226 Difference]: Without dead ends: 23447 [2018-11-07 09:25:36,929 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2568 GetRequests, 2540 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=166, Invalid=484, Unknown=0, NotChecked=0, Total=650 [2018-11-07 09:25:36,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23447 states. [2018-11-07 09:25:37,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23447 to 23101. [2018-11-07 09:25:37,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23101 states. [2018-11-07 09:25:37,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23101 states to 23101 states and 25062 transitions. [2018-11-07 09:25:37,317 INFO L78 Accepts]: Start accepts. Automaton has 23101 states and 25062 transitions. Word has length 1265 [2018-11-07 09:25:37,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:25:37,319 INFO L480 AbstractCegarLoop]: Abstraction has 23101 states and 25062 transitions. [2018-11-07 09:25:37,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-07 09:25:37,319 INFO L276 IsEmpty]: Start isEmpty. Operand 23101 states and 25062 transitions. [2018-11-07 09:25:37,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1286 [2018-11-07 09:25:37,381 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:25:37,382 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:25:37,382 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:25:37,383 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:25:37,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1496399440, now seen corresponding path program 1 times [2018-11-07 09:25:37,383 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:25:37,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:25:37,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:25:37,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:25:37,384 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:25:37,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:25:38,350 WARN L179 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-11-07 09:25:38,997 WARN L179 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 15 [2018-11-07 09:25:42,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2514 backedges. 933 proven. 265 refuted. 0 times theorem prover too weak. 1316 trivial. 0 not checked. [2018-11-07 09:25:42,458 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:25:42,458 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:25:42,458 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1286 with the following transitions: [2018-11-07 09:25:42,458 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [487], [489], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1176], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1385], [1389], [1392], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1445], [1449], [1453], [1456], [1457], [1461], [1465], [1469], [1473], [1477], [1481], [1485], [1488], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 09:25:42,464 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:25:42,464 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:25:42,981 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:25:42,981 INFO L272 AbstractInterpreter]: Visited 286 different actions 844 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 09:25:42,988 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:25:42,988 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:25:42,988 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:25:42,988 INFO L194 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 [2018-11-07 09:25:42,997 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:25:42,997 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:25:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:25:43,307 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:25:43,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2514 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 2282 trivial. 0 not checked. [2018-11-07 09:25:43,927 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:25:44,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2514 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 2282 trivial. 0 not checked. [2018-11-07 09:25:44,872 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:25:44,873 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 13 [2018-11-07 09:25:44,873 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:25:44,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:25:44,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:25:44,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2018-11-07 09:25:44,875 INFO L87 Difference]: Start difference. First operand 23101 states and 25062 transitions. Second operand 3 states. [2018-11-07 09:25:46,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:25:46,283 INFO L93 Difference]: Finished difference Result 47890 states and 52167 transitions. [2018-11-07 09:25:46,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:25:46,283 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1285 [2018-11-07 09:25:46,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:25:46,341 INFO L225 Difference]: With dead ends: 47890 [2018-11-07 09:25:46,341 INFO L226 Difference]: Without dead ends: 18792 [2018-11-07 09:25:46,425 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2581 GetRequests, 2569 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2018-11-07 09:25:46,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18792 states. [2018-11-07 09:25:46,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18792 to 17069. [2018-11-07 09:25:46,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17069 states. [2018-11-07 09:25:46,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17069 states to 17069 states and 18118 transitions. [2018-11-07 09:25:46,750 INFO L78 Accepts]: Start accepts. Automaton has 17069 states and 18118 transitions. Word has length 1285 [2018-11-07 09:25:46,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:25:46,751 INFO L480 AbstractCegarLoop]: Abstraction has 17069 states and 18118 transitions. [2018-11-07 09:25:46,751 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:25:46,751 INFO L276 IsEmpty]: Start isEmpty. Operand 17069 states and 18118 transitions. [2018-11-07 09:25:46,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1666 [2018-11-07 09:25:46,797 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:25:46,798 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:25:46,798 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:25:46,799 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:25:46,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1136399714, now seen corresponding path program 1 times [2018-11-07 09:25:46,799 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:25:46,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:25:46,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:25:46,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:25:46,800 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:25:46,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:25:48,051 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 Received shutdown request... [2018-11-07 09:25:52,826 INFO L134 CoverageAnalysis]: Checked inductivity of 4669 backedges. 1051 proven. 639 refuted. 0 times theorem prover too weak. 2979 trivial. 0 not checked. [2018-11-07 09:25:52,827 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:25:52,827 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:25:52,827 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1666 with the following transitions: [2018-11-07 09:25:52,827 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [487], [489], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1028], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1176], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1320], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1385], [1389], [1392], [1393], [1397], [1401], [1405], [1409], [1412], [1413], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1445], [1449], [1453], [1457], [1461], [1465], [1469], [1473], [1477], [1481], [1485], [1488], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 09:25:52,832 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:25:52,832 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:25:52,833 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-07 09:25:52,833 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-07 09:25:52,834 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 09:25:52,834 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:25:52,834 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:25:52,845 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:25:52,846 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:25:53,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:25:53,243 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:25:53,295 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-07 09:25:53,497 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:25:53,497 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 09:25:53,501 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 09:25:53,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:25:53 BoogieIcfgContainer [2018-11-07 09:25:53,502 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 09:25:53,502 INFO L168 Benchmark]: Toolchain (without parser) took 229502.68 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -107.8 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-11-07 09:25:53,504 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 09:25:53,504 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1188.39 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 76.6 MB). Peak memory consumption was 76.6 MB. Max. memory is 7.1 GB. [2018-11-07 09:25:53,505 INFO L168 Benchmark]: Boogie Procedure Inliner took 219.28 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 726.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -852.7 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2018-11-07 09:25:53,506 INFO L168 Benchmark]: Boogie Preprocessor took 173.24 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 09:25:53,506 INFO L168 Benchmark]: RCFGBuilder took 6752.10 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 262.3 MB). Peak memory consumption was 262.3 MB. Max. memory is 7.1 GB. [2018-11-07 09:25:53,507 INFO L168 Benchmark]: TraceAbstraction took 221157.30 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 1.5 GB in the end (delta: 406.0 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-11-07 09:25:53,512 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1188.39 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 76.6 MB). Peak memory consumption was 76.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 219.28 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 726.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -852.7 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 173.24 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 6752.10 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 262.3 MB). Peak memory consumption was 262.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 221157.30 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 1.5 GB in the end (delta: 406.0 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 139]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 139). Cancelled while BasicCegarLoop was analyzing trace of length 1666 with TraceHistMax 8,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 11 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 221.0s OverallTime, 14 OverallIterations, 8 TraceHistogramMax, 181.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2775 SDtfs, 20554 SDslu, 1630 SDs, 0 SdLazy, 26780 SolverSat, 5236 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 151.6s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 9287 GetRequests, 9160 SyntacticMatches, 12 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 5.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23101occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 4.0s AbstIntTime, 7 AbstIntIterations, 2 AbstIntStrong, 0.9985746787153246 AbsIntWeakeningRatio, 0.04561949196474858 AbsIntAvgWeakeningVarsNumRemoved, 16.682218766200105 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.5s AutomataMinimizationTime, 13 MinimizatonAttempts, 3002 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 12.4s InterpolantComputationTime, 10044 NumberOfCodeBlocks, 10044 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 13630 ConstructedInterpolants, 0 QuantifiedInterpolants, 48484551 SizeOfPredicates, 5 NumberOfNonLiveVariables, 4694 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 21 InterpolantComputations, 11 PerfectInterpolantSequences, 20269/24229 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown