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-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label45_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 16:37:36,182 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 16:37:36,185 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 16:37:36,197 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 16:37:36,198 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 16:37:36,199 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 16:37:36,200 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 16:37:36,202 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 16:37:36,203 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 16:37:36,204 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 16:37:36,205 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 16:37:36,205 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 16:37:36,206 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 16:37:36,207 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 16:37:36,208 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 16:37:36,209 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 16:37:36,210 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 16:37:36,212 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 16:37:36,214 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 16:37:36,216 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 16:37:36,217 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 16:37:36,218 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 16:37:36,221 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 16:37:36,221 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 16:37:36,221 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 16:37:36,222 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 16:37:36,223 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 16:37:36,224 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 16:37:36,225 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 16:37:36,226 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 16:37:36,227 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 16:37:36,227 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 16:37:36,228 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 16:37:36,228 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 16:37:36,229 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 16:37:36,230 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 16:37:36,230 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 16:37:36,246 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 16:37:36,246 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 16:37:36,247 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 16:37:36,247 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 16:37:36,247 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 16:37:36,248 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 16:37:36,248 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 16:37:36,248 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 16:37:36,248 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 16:37:36,248 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 16:37:36,249 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 16:37:36,249 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 16:37:36,249 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 16:37:36,250 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 16:37:36,250 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 16:37:36,250 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 16:37:36,250 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 16:37:36,250 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 16:37:36,251 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 16:37:36,251 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 16:37:36,251 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 16:37:36,251 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 16:37:36,251 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 16:37:36,252 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 16:37:36,252 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 16:37:36,252 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:37:36,252 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 16:37:36,252 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 16:37:36,253 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 16:37:36,253 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 16:37:36,253 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 16:37:36,253 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 16:37:36,253 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 16:37:36,254 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 16:37:36,254 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 16:37:36,304 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 16:37:36,321 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 16:37:36,325 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 16:37:36,327 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 16:37:36,327 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 16:37:36,328 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label45_false-unreach-call.c [2018-11-12 16:37:36,386 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b7aa62e4/4b53d4faa5f640bfa1519989e83a3fb2/FLAG666f36332 [2018-11-12 16:37:37,118 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 16:37:37,118 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label45_false-unreach-call.c [2018-11-12 16:37:37,143 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b7aa62e4/4b53d4faa5f640bfa1519989e83a3fb2/FLAG666f36332 [2018-11-12 16:37:37,162 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b7aa62e4/4b53d4faa5f640bfa1519989e83a3fb2 [2018-11-12 16:37:37,174 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 16:37:37,176 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 16:37:37,177 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 16:37:37,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 16:37:37,185 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 16:37:37,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:37:37" (1/1) ... [2018-11-12 16:37:37,190 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e53ccc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:37:37, skipping insertion in model container [2018-11-12 16:37:37,190 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:37:37" (1/1) ... [2018-11-12 16:37:37,202 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 16:37:37,309 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 16:37:38,165 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:37:38,173 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 16:37:38,529 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:37:38,553 INFO L193 MainTranslator]: Completed translation [2018-11-12 16:37:38,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:37:38 WrapperNode [2018-11-12 16:37:38,554 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 16:37:38,555 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 16:37:38,555 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 16:37:38,555 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 16:37:38,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:37:38" (1/1) ... [2018-11-12 16:37:38,788 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:37:38" (1/1) ... [2018-11-12 16:37:38,800 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 16:37:38,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 16:37:38,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 16:37:38,801 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 16:37:38,813 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:37:38" (1/1) ... [2018-11-12 16:37:38,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:37:38" (1/1) ... [2018-11-12 16:37:38,824 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:37:38" (1/1) ... [2018-11-12 16:37:38,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:37:38" (1/1) ... [2018-11-12 16:37:38,893 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:37:38" (1/1) ... [2018-11-12 16:37:38,921 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:37:38" (1/1) ... [2018-11-12 16:37:38,942 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:37:38" (1/1) ... [2018-11-12 16:37:38,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 16:37:38,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 16:37:38,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 16:37:38,965 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 16:37:38,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:37:38" (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 [2018-11-12 16:37:39,037 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 16:37:39,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 16:37:39,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 16:37:39,039 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 16:37:39,039 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 16:37:39,039 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 16:37:39,040 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 16:37:39,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 16:37:39,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 16:37:39,040 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 16:37:39,041 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 16:37:44,809 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 16:37:44,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:37:44 BoogieIcfgContainer [2018-11-12 16:37:44,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 16:37:44,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 16:37:44,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 16:37:44,815 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 16:37:44,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:37:37" (1/3) ... [2018-11-12 16:37:44,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36ec3b19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:37:44, skipping insertion in model container [2018-11-12 16:37:44,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:37:38" (2/3) ... [2018-11-12 16:37:44,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36ec3b19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:37:44, skipping insertion in model container [2018-11-12 16:37:44,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:37:44" (3/3) ... [2018-11-12 16:37:44,818 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label45_false-unreach-call.c [2018-11-12 16:37:44,827 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 16:37:44,835 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 16:37:44,853 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 16:37:44,895 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 16:37:44,895 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 16:37:44,895 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 16:37:44,895 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 16:37:44,896 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 16:37:44,896 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 16:37:44,896 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 16:37:44,896 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 16:37:44,939 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-12 16:37:44,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-12 16:37:44,949 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:37:44,950 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] [2018-11-12 16:37:44,952 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:37:44,957 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:37:44,958 INFO L82 PathProgramCache]: Analyzing trace with hash -114315524, now seen corresponding path program 1 times [2018-11-12 16:37:44,960 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:37:45,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:37:45,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:37:45,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:37:45,011 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:37:45,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:37:45,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:37:45,467 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:37:45,467 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 16:37:45,468 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:37:45,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 16:37:45,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 16:37:45,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:37:45,496 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-11-12 16:37:51,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:37:51,960 INFO L93 Difference]: Finished difference Result 1501 states and 2761 transitions. [2018-11-12 16:37:51,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 16:37:51,962 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-11-12 16:37:51,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:37:51,989 INFO L225 Difference]: With dead ends: 1501 [2018-11-12 16:37:51,989 INFO L226 Difference]: Without dead ends: 1057 [2018-11-12 16:37:52,000 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 [2018-11-12 16:37:52,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2018-11-12 16:37:52,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 744. [2018-11-12 16:37:52,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-12 16:37:52,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1125 transitions. [2018-11-12 16:37:52,110 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1125 transitions. Word has length 36 [2018-11-12 16:37:52,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:37:52,110 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1125 transitions. [2018-11-12 16:37:52,111 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 16:37:52,111 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1125 transitions. [2018-11-12 16:37:52,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-11-12 16:37:52,116 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:37:52,117 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:37:52,117 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:37:52,117 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:37:52,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1201155097, now seen corresponding path program 1 times [2018-11-12 16:37:52,118 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:37:52,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:37:52,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:37:52,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:37:52,119 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:37:52,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:37:52,364 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:37:52,364 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:37:52,364 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 16:37:52,364 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:37:52,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 16:37:52,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 16:37:52,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:37:52,367 INFO L87 Difference]: Start difference. First operand 744 states and 1125 transitions. Second operand 4 states. [2018-11-12 16:37:57,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:37:57,911 INFO L93 Difference]: Finished difference Result 2732 states and 4244 transitions. [2018-11-12 16:37:57,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 16:37:57,913 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2018-11-12 16:37:57,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:37:57,928 INFO L225 Difference]: With dead ends: 2732 [2018-11-12 16:37:57,928 INFO L226 Difference]: Without dead ends: 1994 [2018-11-12 16:37:57,935 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:37:57,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1994 states. [2018-11-12 16:37:58,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1994 to 1682. [2018-11-12 16:37:58,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1682 states. [2018-11-12 16:37:58,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1682 states to 1682 states and 2410 transitions. [2018-11-12 16:37:58,012 INFO L78 Accepts]: Start accepts. Automaton has 1682 states and 2410 transitions. Word has length 106 [2018-11-12 16:37:58,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:37:58,013 INFO L480 AbstractCegarLoop]: Abstraction has 1682 states and 2410 transitions. [2018-11-12 16:37:58,013 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 16:37:58,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1682 states and 2410 transitions. [2018-11-12 16:37:58,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-11-12 16:37:58,022 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:37:58,022 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 16:37:58,023 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:37:58,023 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:37:58,023 INFO L82 PathProgramCache]: Analyzing trace with hash 199618376, now seen corresponding path program 1 times [2018-11-12 16:37:58,023 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:37:58,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:37:58,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:37:58,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:37:58,025 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:37:58,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:37:58,522 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 61 proven. 87 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-12 16:37:58,523 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:37:58,523 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:37:58,524 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 257 with the following transitions: [2018-11-12 16:37:58,526 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [261], [263], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [816], [819], [823], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 16:37:58,579 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:37:58,579 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:37:59,224 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:38:01,117 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:38:01,119 INFO L272 AbstractInterpreter]: Visited 130 different actions 874 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Performed 15631 root evaluator evaluations with a maximum evaluation depth of 6. Performed 15631 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:38:01,164 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:38:01,164 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:38:02,252 INFO L227 lantSequenceWeakener]: Weakened 82 states. On average, predicates are now at 78.55% of their original sizes. [2018-11-12 16:38:02,252 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:38:05,880 INFO L415 sIntCurrentIteration]: We unified 255 AI predicates to 255 [2018-11-12 16:38:05,881 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:38:05,882 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:38:05,882 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [6] total 24 [2018-11-12 16:38:05,883 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:38:05,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-12 16:38:05,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-12 16:38:05,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2018-11-12 16:38:05,884 INFO L87 Difference]: Start difference. First operand 1682 states and 2410 transitions. Second operand 20 states. [2018-11-12 16:39:05,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:39:05,637 INFO L93 Difference]: Finished difference Result 5898 states and 7713 transitions. [2018-11-12 16:39:05,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-12 16:39:05,637 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 256 [2018-11-12 16:39:05,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:39:05,658 INFO L225 Difference]: With dead ends: 5898 [2018-11-12 16:39:05,658 INFO L226 Difference]: Without dead ends: 4222 [2018-11-12 16:39:05,668 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 272 GetRequests, 202 SyntacticMatches, 35 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=303, Invalid=1029, Unknown=0, NotChecked=0, Total=1332 [2018-11-12 16:39:05,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4222 states. [2018-11-12 16:39:05,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4222 to 3469. [2018-11-12 16:39:05,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3469 states. [2018-11-12 16:39:05,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3469 states to 3469 states and 4259 transitions. [2018-11-12 16:39:05,769 INFO L78 Accepts]: Start accepts. Automaton has 3469 states and 4259 transitions. Word has length 256 [2018-11-12 16:39:05,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:39:05,771 INFO L480 AbstractCegarLoop]: Abstraction has 3469 states and 4259 transitions. [2018-11-12 16:39:05,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-12 16:39:05,771 INFO L276 IsEmpty]: Start isEmpty. Operand 3469 states and 4259 transitions. [2018-11-12 16:39:05,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2018-11-12 16:39:05,781 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:39:05,782 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:39:05,782 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:39:05,782 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:39:05,782 INFO L82 PathProgramCache]: Analyzing trace with hash 904114606, now seen corresponding path program 1 times [2018-11-12 16:39:05,783 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:39:05,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:39:05,784 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:39:05,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:39:05,785 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:39:05,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:39:06,543 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:39:06,543 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:39:06,543 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:39:06,544 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 398 with the following transitions: [2018-11-12 16:39:06,545 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [261], [263], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [644], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 16:39:06,556 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:39:06,556 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:39:06,798 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:39:07,179 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:39:07,180 INFO L272 AbstractInterpreter]: Visited 283 different actions 560 times. Merged at 5 different actions 5 times. Never widened. Performed 8006 root evaluator evaluations with a maximum evaluation depth of 6. Performed 8006 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:39:07,217 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:39:07,218 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:39:08,646 INFO L227 lantSequenceWeakener]: Weakened 61 states. On average, predicates are now at 80.05% of their original sizes. [2018-11-12 16:39:08,646 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:39:09,619 INFO L415 sIntCurrentIteration]: We unified 396 AI predicates to 396 [2018-11-12 16:39:09,620 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:39:09,620 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:39:09,621 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [6] total 24 [2018-11-12 16:39:09,621 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:39:09,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-12 16:39:09,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-12 16:39:09,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2018-11-12 16:39:09,623 INFO L87 Difference]: Start difference. First operand 3469 states and 4259 transitions. Second operand 20 states. [2018-11-12 16:39:51,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:39:51,941 INFO L93 Difference]: Finished difference Result 6376 states and 8110 transitions. [2018-11-12 16:39:51,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-12 16:39:51,941 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 397 [2018-11-12 16:39:51,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:39:51,964 INFO L225 Difference]: With dead ends: 6376 [2018-11-12 16:39:51,964 INFO L226 Difference]: Without dead ends: 4700 [2018-11-12 16:39:51,972 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 413 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=254, Invalid=1078, Unknown=0, NotChecked=0, Total=1332 [2018-11-12 16:39:51,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4700 states. [2018-11-12 16:39:52,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4700 to 4693. [2018-11-12 16:39:52,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4693 states. [2018-11-12 16:39:52,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4693 states to 4693 states and 5570 transitions. [2018-11-12 16:39:52,098 INFO L78 Accepts]: Start accepts. Automaton has 4693 states and 5570 transitions. Word has length 397 [2018-11-12 16:39:52,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:39:52,100 INFO L480 AbstractCegarLoop]: Abstraction has 4693 states and 5570 transitions. [2018-11-12 16:39:52,100 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-12 16:39:52,100 INFO L276 IsEmpty]: Start isEmpty. Operand 4693 states and 5570 transitions. [2018-11-12 16:39:52,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2018-11-12 16:39:52,117 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:39:52,118 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:39:52,118 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:39:52,118 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:39:52,119 INFO L82 PathProgramCache]: Analyzing trace with hash -883454299, now seen corresponding path program 1 times [2018-11-12 16:39:52,119 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:39:52,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:39:52,120 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:39:52,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:39:52,120 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:39:52,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:39:52,946 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 260 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-11-12 16:39:52,946 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:39:52,947 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:39:52,947 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 494 with the following transitions: [2018-11-12 16:39:52,948 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [261], [263], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [644], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 16:39:52,954 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:39:52,954 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:39:53,020 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:39:54,121 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:39:54,122 INFO L272 AbstractInterpreter]: Visited 285 different actions 1132 times. Merged at 7 different actions 28 times. Never widened. Performed 20279 root evaluator evaluations with a maximum evaluation depth of 6. Performed 20279 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 5 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-12 16:39:54,131 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:39:54,132 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:39:54,132 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:39:54,132 INFO L192 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 [2018-11-12 16:39:54,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:39:54,143 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:39:54,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:39:54,308 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:39:55,135 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-12 16:39:55,871 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 234 proven. 41 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-11-12 16:39:55,871 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:39:56,431 WARN L179 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 18 [2018-11-12 16:39:56,614 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-12 16:39:57,901 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 97 proven. 253 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 16:39:57,922 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:39:57,923 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 17 [2018-11-12 16:39:57,923 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:39:57,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-12 16:39:57,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-12 16:39:57,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-11-12 16:39:57,925 INFO L87 Difference]: Start difference. First operand 4693 states and 5570 transitions. Second operand 12 states. [2018-11-12 16:40:30,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:40:30,008 INFO L93 Difference]: Finished difference Result 19401 states and 26666 transitions. [2018-11-12 16:40:30,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-11-12 16:40:30,013 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 493 [2018-11-12 16:40:30,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:40:30,085 INFO L225 Difference]: With dead ends: 19401 [2018-11-12 16:40:30,086 INFO L226 Difference]: Without dead ends: 13131 [2018-11-12 16:40:30,142 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1136 GetRequests, 1043 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2937 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1698, Invalid=7044, Unknown=0, NotChecked=0, Total=8742 [2018-11-12 16:40:30,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13131 states. [2018-11-12 16:40:30,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13131 to 11750. [2018-11-12 16:40:30,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11750 states. [2018-11-12 16:40:30,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11750 states to 11750 states and 14861 transitions. [2018-11-12 16:40:30,516 INFO L78 Accepts]: Start accepts. Automaton has 11750 states and 14861 transitions. Word has length 493 [2018-11-12 16:40:30,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:40:30,518 INFO L480 AbstractCegarLoop]: Abstraction has 11750 states and 14861 transitions. [2018-11-12 16:40:30,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-12 16:40:30,518 INFO L276 IsEmpty]: Start isEmpty. Operand 11750 states and 14861 transitions. [2018-11-12 16:40:30,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2018-11-12 16:40:30,547 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:40:30,548 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:40:30,548 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:40:30,548 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:40:30,549 INFO L82 PathProgramCache]: Analyzing trace with hash 692230944, now seen corresponding path program 1 times [2018-11-12 16:40:30,549 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:40:30,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:40:30,550 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:40:30,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:40:30,550 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:40:30,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:40:31,508 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 93 proven. 174 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-11-12 16:40:31,508 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:40:31,509 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:40:31,509 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 518 with the following transitions: [2018-11-12 16:40:31,510 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [261], [263], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [816], [819], [823], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1562], [1566], [1570], [1581], [1585], [1589], [1593], [1597], [1601], [1612], [1616], [1620], [1623], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 16:40:31,515 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:40:31,515 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:40:31,760 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:40:32,267 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:40:32,267 INFO L272 AbstractInterpreter]: Visited 297 different actions 882 times. Merged at 7 different actions 15 times. Never widened. Performed 13387 root evaluator evaluations with a maximum evaluation depth of 6. Performed 13387 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-12 16:40:32,277 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:40:32,277 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:40:32,277 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:40:32,277 INFO L192 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 [2018-11-12 16:40:32,290 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:40:32,290 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:40:32,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:40:32,441 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:40:32,923 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 280 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-12 16:40:32,923 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:40:33,651 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 280 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-12 16:40:33,672 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:40:33,672 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2018-11-12 16:40:33,672 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:40:33,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 16:40:33,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 16:40:33,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2018-11-12 16:40:33,674 INFO L87 Difference]: Start difference. First operand 11750 states and 14861 transitions. Second operand 11 states. [2018-11-12 16:40:39,381 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-11-12 16:40:39,954 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 20 [2018-11-12 16:40:56,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:40:56,780 INFO L93 Difference]: Finished difference Result 38926 states and 57176 transitions. [2018-11-12 16:40:56,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-11-12 16:40:56,781 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 517 [2018-11-12 16:40:56,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:40:56,993 INFO L225 Difference]: With dead ends: 38926 [2018-11-12 16:40:56,993 INFO L226 Difference]: Without dead ends: 29306 [2018-11-12 16:40:57,098 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1166 GetRequests, 1087 SyntacticMatches, 3 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2109 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1180, Invalid=4826, Unknown=0, NotChecked=0, Total=6006 [2018-11-12 16:40:57,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29306 states. [2018-11-12 16:40:57,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29306 to 27641. [2018-11-12 16:40:57,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27641 states. [2018-11-12 16:40:57,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27641 states to 27641 states and 34159 transitions. [2018-11-12 16:40:57,969 INFO L78 Accepts]: Start accepts. Automaton has 27641 states and 34159 transitions. Word has length 517 [2018-11-12 16:40:57,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:40:57,970 INFO L480 AbstractCegarLoop]: Abstraction has 27641 states and 34159 transitions. [2018-11-12 16:40:57,970 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 16:40:57,970 INFO L276 IsEmpty]: Start isEmpty. Operand 27641 states and 34159 transitions. [2018-11-12 16:40:57,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2018-11-12 16:40:57,998 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:40:57,998 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:40:57,999 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:40:57,999 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:40:57,999 INFO L82 PathProgramCache]: Analyzing trace with hash -421652104, now seen corresponding path program 1 times [2018-11-12 16:40:57,999 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:40:58,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:40:58,000 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:40:58,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:40:58,001 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:40:58,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:40:58,826 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 260 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-12 16:40:58,827 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:40:58,827 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:40:58,827 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 522 with the following transitions: [2018-11-12 16:40:58,829 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [261], [263], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [644], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1562], [1566], [1570], [1581], [1585], [1589], [1593], [1597], [1601], [1612], [1616], [1620], [1623], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 16:40:58,834 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:40:58,835 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:40:59,396 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:41:00,482 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:41:00,482 INFO L272 AbstractInterpreter]: Visited 297 different actions 1178 times. Merged at 7 different actions 25 times. Never widened. Performed 22487 root evaluator evaluations with a maximum evaluation depth of 6. Performed 22487 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 4 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-12 16:41:00,490 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:41:00,490 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:41:00,490 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:41:00,490 INFO L192 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 [2018-11-12 16:41:00,500 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:41:00,500 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:41:00,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:41:00,652 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:41:00,809 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 260 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-12 16:41:00,809 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:41:01,162 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 260 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-12 16:41:01,183 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:41:01,183 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-12 16:41:01,183 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:41:01,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-12 16:41:01,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-12 16:41:01,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-11-12 16:41:01,185 INFO L87 Difference]: Start difference. First operand 27641 states and 34159 transitions. Second operand 9 states. [2018-11-12 16:41:07,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:41:07,916 INFO L93 Difference]: Finished difference Result 59890 states and 90068 transitions. [2018-11-12 16:41:07,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-12 16:41:07,916 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 521 [2018-11-12 16:41:07,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:41:08,518 INFO L225 Difference]: With dead ends: 59890 [2018-11-12 16:41:08,519 INFO L226 Difference]: Without dead ends: 34378 [2018-11-12 16:41:08,700 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1065 GetRequests, 1046 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=252, Unknown=0, NotChecked=0, Total=380 [2018-11-12 16:41:08,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34378 states. [2018-11-12 16:41:09,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34378 to 33340. [2018-11-12 16:41:09,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33340 states. [2018-11-12 16:41:09,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33340 states to 33340 states and 45433 transitions. [2018-11-12 16:41:09,822 INFO L78 Accepts]: Start accepts. Automaton has 33340 states and 45433 transitions. Word has length 521 [2018-11-12 16:41:09,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:41:09,823 INFO L480 AbstractCegarLoop]: Abstraction has 33340 states and 45433 transitions. [2018-11-12 16:41:09,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-12 16:41:09,823 INFO L276 IsEmpty]: Start isEmpty. Operand 33340 states and 45433 transitions. [2018-11-12 16:41:09,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2018-11-12 16:41:09,851 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:41:09,851 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:41:09,851 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:41:09,852 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:41:09,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1239854732, now seen corresponding path program 1 times [2018-11-12 16:41:09,852 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:41:09,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:41:09,856 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:41:09,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:41:09,856 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:41:09,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:41:10,319 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2018-11-12 16:41:10,319 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:41:10,319 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 16:41:10,319 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:41:10,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:41:10,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:41:10,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:41:10,320 INFO L87 Difference]: Start difference. First operand 33340 states and 45433 transitions. Second operand 3 states. Received shutdown request... [2018-11-12 16:41:11,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:41:11,434 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 16:41:11,440 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 16:41:11,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 04:41:11 BoogieIcfgContainer [2018-11-12 16:41:11,440 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 16:41:11,441 INFO L168 Benchmark]: Toolchain (without parser) took 214266.56 ms. Allocated memory was 1.5 GB in the beginning and 5.1 GB in the end (delta: 3.6 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.2 GB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-11-12 16:41:11,442 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 16:41:11,442 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1377.02 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: 95.3 MB). Peak memory consumption was 95.3 MB. Max. memory is 7.1 GB. [2018-11-12 16:41:11,444 INFO L168 Benchmark]: Boogie Procedure Inliner took 245.69 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 746.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -867.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 7.1 GB. [2018-11-12 16:41:11,445 INFO L168 Benchmark]: Boogie Preprocessor took 163.30 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2018-11-12 16:41:11,446 INFO L168 Benchmark]: RCFGBuilder took 5845.12 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 276.4 MB). Peak memory consumption was 276.4 MB. Max. memory is 7.1 GB. [2018-11-12 16:41:11,446 INFO L168 Benchmark]: TraceAbstraction took 206629.60 ms. Allocated memory was 2.3 GB in the beginning and 5.1 GB in the end (delta: 2.8 GB). Free memory was 1.9 GB in the beginning and 2.7 GB in the end (delta: -771.8 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-11-12 16:41:11,452 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1377.02 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: 95.3 MB). Peak memory consumption was 95.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 245.69 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 746.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -867.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 163.30 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5845.12 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 276.4 MB). Peak memory consumption was 276.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 206629.60 ms. Allocated memory was 2.3 GB in the beginning and 5.1 GB in the end (delta: 2.8 GB). Free memory was 1.9 GB in the beginning and 2.7 GB in the end (delta: -771.8 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 94). Cancelled while BasicCegarLoop was constructing difference of abstraction (33340states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (16331 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 206.5s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 178.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2877 SDtfs, 26008 SDslu, 4051 SDs, 0 SdLazy, 56900 SolverSat, 7431 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 97.4s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 4068 GetRequests, 3766 SyntacticMatches, 41 SemanticMatches, 261 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5928 ImplicationChecksByTransitivity, 12.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33340occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 6.9s AbstIntTime, 5 AbstIntIterations, 2 AbstIntStrong, 0.9977664428765888 AbsIntWeakeningRatio, 0.08141321044546851 AbsIntAvgWeakeningVarsNumRemoved, 13.41321044546851 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.7s AutomataMinimizationTime, 7 MinimizatonAttempts, 5469 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 8.7s InterpolantComputationTime, 4384 NumberOfCodeBlocks, 4384 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 5901 ConstructedInterpolants, 0 QuantifiedInterpolants, 11560429 SizeOfPredicates, 15 NumberOfNonLiveVariables, 2191 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 14 InterpolantComputations, 3 PerfectInterpolantSequences, 3362/3931 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown