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/Problem16_label57_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 20:56:53,177 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 20:56:53,180 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 20:56:53,195 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 20:56:53,195 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 20:56:53,196 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 20:56:53,198 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 20:56:53,200 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 20:56:53,202 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 20:56:53,203 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 20:56:53,204 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 20:56:53,205 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 20:56:53,205 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 20:56:53,206 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 20:56:53,208 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 20:56:53,209 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 20:56:53,210 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 20:56:53,212 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 20:56:53,214 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 20:56:53,215 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 20:56:53,217 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 20:56:53,218 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 20:56:53,221 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 20:56:53,221 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 20:56:53,221 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 20:56:53,225 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 20:56:53,226 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 20:56:53,227 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 20:56:53,231 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 20:56:53,232 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 20:56:53,232 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 20:56:53,233 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 20:56:53,233 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 20:56:53,233 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 20:56:53,241 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 20:56:53,242 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 20:56:53,242 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 [2018-11-07 20:56:53,272 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 20:56:53,272 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 20:56:53,274 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 20:56:53,274 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 20:56:53,274 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 20:56:53,275 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 20:56:53,275 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 20:56:53,275 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 20:56:53,275 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 20:56:53,275 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 20:56:53,276 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 20:56:53,276 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 20:56:53,276 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 20:56:53,280 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 20:56:53,281 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 20:56:53,281 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 20:56:53,281 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 20:56:53,281 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 20:56:53,281 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 20:56:53,282 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 20:56:53,284 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 20:56:53,284 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 20:56:53,284 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 20:56:53,284 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 20:56:53,285 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 20:56:53,285 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:56:53,285 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 20:56:53,285 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 20:56:53,286 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 20:56:53,286 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 20:56:53,286 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 20:56:53,286 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 20:56:53,286 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 20:56:53,287 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 20:56:53,287 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 20:56:53,355 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 20:56:53,371 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 20:56:53,376 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 20:56:53,378 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 20:56:53,378 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 20:56:53,379 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label57_true-unreach-call.c [2018-11-07 20:56:53,447 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c5151bf6/4a97daa1a06441deb2cfd5a3b0a72122/FLAG1718de143 [2018-11-07 20:56:54,220 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 20:56:54,221 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label57_true-unreach-call.c [2018-11-07 20:56:54,240 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c5151bf6/4a97daa1a06441deb2cfd5a3b0a72122/FLAG1718de143 [2018-11-07 20:56:54,256 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c5151bf6/4a97daa1a06441deb2cfd5a3b0a72122 [2018-11-07 20:56:54,268 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 20:56:54,269 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 20:56:54,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 20:56:54,271 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 20:56:54,275 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 20:56:54,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:56:54" (1/1) ... [2018-11-07 20:56:54,279 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fe562ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:54, skipping insertion in model container [2018-11-07 20:56:54,279 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:56:54" (1/1) ... [2018-11-07 20:56:54,290 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 20:56:54,380 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 20:56:55,132 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:56:55,137 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 20:56:55,443 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:56:55,464 INFO L193 MainTranslator]: Completed translation [2018-11-07 20:56:55,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:55 WrapperNode [2018-11-07 20:56:55,465 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 20:56:55,466 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 20:56:55,466 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 20:56:55,466 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 20:56:55,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:55" (1/1) ... [2018-11-07 20:56:55,657 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:55" (1/1) ... [2018-11-07 20:56:55,674 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 20:56:55,674 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 20:56:55,674 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 20:56:55,675 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 20:56:55,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:55" (1/1) ... [2018-11-07 20:56:55,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:55" (1/1) ... [2018-11-07 20:56:55,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:55" (1/1) ... [2018-11-07 20:56:55,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:55" (1/1) ... [2018-11-07 20:56:55,763 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:55" (1/1) ... [2018-11-07 20:56:55,779 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:55" (1/1) ... [2018-11-07 20:56:55,807 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:55" (1/1) ... [2018-11-07 20:56:55,824 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 20:56:55,824 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 20:56:55,825 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 20:56:55,825 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 20:56:55,826 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:55" (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 20:56:55,896 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 20:56:55,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 20:56:55,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 20:56:55,897 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 20:56:55,897 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 20:56:55,897 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 20:56:55,898 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 20:56:55,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 20:56:55,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 20:56:55,898 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 20:56:55,898 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 20:57:02,464 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 20:57:02,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:57:02 BoogieIcfgContainer [2018-11-07 20:57:02,464 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 20:57:02,465 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 20:57:02,466 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 20:57:02,469 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 20:57:02,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:56:54" (1/3) ... [2018-11-07 20:57:02,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9933f11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:57:02, skipping insertion in model container [2018-11-07 20:57:02,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:55" (2/3) ... [2018-11-07 20:57:02,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9933f11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:57:02, skipping insertion in model container [2018-11-07 20:57:02,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:57:02" (3/3) ... [2018-11-07 20:57:02,474 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label57_true-unreach-call.c [2018-11-07 20:57:02,483 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 20:57:02,491 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 20:57:02,506 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 20:57:02,546 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 20:57:02,546 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 20:57:02,547 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 20:57:02,547 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 20:57:02,547 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 20:57:02,547 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 20:57:02,547 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 20:57:02,547 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 20:57:02,592 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-07 20:57:02,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-11-07 20:57:02,601 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:57:02,602 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] [2018-11-07 20:57:02,604 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:57:02,609 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:57:02,609 INFO L82 PathProgramCache]: Analyzing trace with hash -768030333, now seen corresponding path program 1 times [2018-11-07 20:57:02,612 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:57:02,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:57:02,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:57:02,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:57:02,663 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:57:02,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:57:03,110 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:57:03,241 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 20:57:03,244 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:57:03,244 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 20:57:03,244 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:57:03,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 20:57:03,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 20:57:03,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 20:57:03,280 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-07 20:57:06,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:57:06,694 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-07 20:57:06,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 20:57:06,696 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2018-11-07 20:57:06,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:57:06,719 INFO L225 Difference]: With dead ends: 1156 [2018-11-07 20:57:06,719 INFO L226 Difference]: Without dead ends: 744 [2018-11-07 20:57:06,729 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 20:57:06,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-07 20:57:06,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-07 20:57:06,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-07 20:57:06,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1353 transitions. [2018-11-07 20:57:06,884 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1353 transitions. Word has length 47 [2018-11-07 20:57:06,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:57:06,885 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1353 transitions. [2018-11-07 20:57:06,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 20:57:06,886 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1353 transitions. [2018-11-07 20:57:06,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-11-07 20:57:06,894 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:57:06,895 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:57:06,895 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:57:06,896 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:57:06,896 INFO L82 PathProgramCache]: Analyzing trace with hash -722771479, now seen corresponding path program 1 times [2018-11-07 20:57:06,896 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:57:06,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:57:06,897 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:57:06,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:57:06,898 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:57:06,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:57:07,286 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:57:07,287 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:57:07,287 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:57:07,288 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:57:07,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:57:07,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:57:07,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:57:07,291 INFO L87 Difference]: Start difference. First operand 744 states and 1353 transitions. Second operand 6 states. [2018-11-07 20:57:15,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:57:15,682 INFO L93 Difference]: Finished difference Result 2184 states and 3997 transitions. [2018-11-07 20:57:15,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:57:15,685 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2018-11-07 20:57:15,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:57:15,705 INFO L225 Difference]: With dead ends: 2184 [2018-11-07 20:57:15,706 INFO L226 Difference]: Without dead ends: 1446 [2018-11-07 20:57:15,712 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 20:57:15,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2018-11-07 20:57:15,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1425. [2018-11-07 20:57:15,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2018-11-07 20:57:15,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2267 transitions. [2018-11-07 20:57:15,790 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2267 transitions. Word has length 140 [2018-11-07 20:57:15,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:57:15,790 INFO L480 AbstractCegarLoop]: Abstraction has 1425 states and 2267 transitions. [2018-11-07 20:57:15,790 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:57:15,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2267 transitions. [2018-11-07 20:57:15,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-11-07 20:57:15,800 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:57:15,801 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:57:15,802 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:57:15,802 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:57:15,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1752957247, now seen corresponding path program 1 times [2018-11-07 20:57:15,802 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:57:15,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:57:15,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:57:15,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:57:15,804 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:57:15,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:57:16,358 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 80 proven. 88 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 20:57:16,358 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:57:16,358 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:57:16,359 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 252 with the following transitions: [2018-11-07 20:57:16,362 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], [455], [457], [460], [468], [476], [484], [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], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:57:16,413 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:57:16,413 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:57:17,261 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:57:17,263 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 20:57:17,306 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:57:17,306 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:57:18,265 INFO L227 lantSequenceWeakener]: Weakened 229 states. On average, predicates are now at 77.95% of their original sizes. [2018-11-07 20:57:18,265 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:57:18,773 INFO L415 sIntCurrentIteration]: We unified 250 AI predicates to 250 [2018-11-07 20:57:18,773 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:57:18,777 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:57:18,777 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-11-07 20:57:18,778 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:57:18,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 20:57:18,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 20:57:18,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-07 20:57:18,779 INFO L87 Difference]: Start difference. First operand 1425 states and 2267 transitions. Second operand 10 states. [2018-11-07 20:57:23,058 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:57:46,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:57:46,434 INFO L93 Difference]: Finished difference Result 3187 states and 5096 transitions. [2018-11-07 20:57:46,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 20:57:46,434 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 251 [2018-11-07 20:57:46,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:57:46,444 INFO L225 Difference]: With dead ends: 3187 [2018-11-07 20:57:46,445 INFO L226 Difference]: Without dead ends: 1768 [2018-11-07 20:57:46,450 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 254 GetRequests, 222 SyntacticMatches, 20 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-11-07 20:57:46,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1768 states. [2018-11-07 20:57:47,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1768 to 1763. [2018-11-07 20:57:47,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1763 states. [2018-11-07 20:57:47,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2612 transitions. [2018-11-07 20:57:47,018 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2612 transitions. Word has length 251 [2018-11-07 20:57:47,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:57:47,019 INFO L480 AbstractCegarLoop]: Abstraction has 1763 states and 2612 transitions. [2018-11-07 20:57:47,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 20:57:47,019 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2612 transitions. [2018-11-07 20:57:47,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2018-11-07 20:57:47,027 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:57:47,028 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, 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, 1, 1, 1, 1, 1, 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 20:57:47,028 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:57:47,029 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:57:47,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1422241764, now seen corresponding path program 1 times [2018-11-07 20:57:47,029 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:57:47,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:57:47,030 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:57:47,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:57:47,031 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:57:47,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:57:47,447 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:57:47,989 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 126 proven. 197 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-07 20:57:47,989 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:57:47,990 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:57:47,990 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 344 with the following transitions: [2018-11-07 20:57:47,990 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], [455], [457], [460], [468], [476], [484], [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], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:57:47,998 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:57:47,998 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:57:48,093 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:57:48,372 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:57:48,373 INFO L272 AbstractInterpreter]: Visited 120 different actions 347 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 20:57:48,382 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:57:48,382 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:57:49,027 INFO L227 lantSequenceWeakener]: Weakened 99 states. On average, predicates are now at 78.15% of their original sizes. [2018-11-07 20:57:49,027 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:57:50,031 INFO L415 sIntCurrentIteration]: We unified 342 AI predicates to 342 [2018-11-07 20:57:50,031 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:57:50,031 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:57:50,031 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-11-07 20:57:50,032 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:57:50,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 20:57:50,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 20:57:50,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2018-11-07 20:57:50,036 INFO L87 Difference]: Start difference. First operand 1763 states and 2612 transitions. Second operand 18 states. [2018-11-07 20:58:18,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:58:18,776 INFO L93 Difference]: Finished difference Result 4356 states and 6646 transitions. [2018-11-07 20:58:18,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-07 20:58:18,777 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 343 [2018-11-07 20:58:18,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:58:18,792 INFO L225 Difference]: With dead ends: 4356 [2018-11-07 20:58:18,792 INFO L226 Difference]: Without dead ends: 2937 [2018-11-07 20:58:18,798 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 352 GetRequests, 311 SyntacticMatches, 15 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=168, Invalid=588, Unknown=0, NotChecked=0, Total=756 [2018-11-07 20:58:18,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2018-11-07 20:58:18,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 2707. [2018-11-07 20:58:18,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2707 states. [2018-11-07 20:58:18,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2707 states to 2707 states and 3594 transitions. [2018-11-07 20:58:18,874 INFO L78 Accepts]: Start accepts. Automaton has 2707 states and 3594 transitions. Word has length 343 [2018-11-07 20:58:18,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:58:18,875 INFO L480 AbstractCegarLoop]: Abstraction has 2707 states and 3594 transitions. [2018-11-07 20:58:18,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-07 20:58:18,876 INFO L276 IsEmpty]: Start isEmpty. Operand 2707 states and 3594 transitions. [2018-11-07 20:58:18,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2018-11-07 20:58:18,885 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:58:18,885 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, 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, 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] [2018-11-07 20:58:18,886 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:58:18,886 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:58:18,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1442469028, now seen corresponding path program 1 times [2018-11-07 20:58:18,886 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:58:18,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:58:18,887 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:58:18,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:58:18,888 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:58:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:58:19,245 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:58:19,744 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 126 proven. 217 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-07 20:58:19,745 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:58:19,745 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:58:19,745 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 380 with the following transitions: [2018-11-07 20:58:19,746 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], [455], [457], [460], [468], [476], [484], [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], [764], [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], [904], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:58:19,750 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:58:19,751 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:58:19,884 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:58:20,252 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:58:20,252 INFO L272 AbstractInterpreter]: Visited 137 different actions 398 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 20:58:20,298 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:58:20,298 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:58:21,498 INFO L227 lantSequenceWeakener]: Weakened 99 states. On average, predicates are now at 78.15% of their original sizes. [2018-11-07 20:58:21,498 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:58:22,345 INFO L415 sIntCurrentIteration]: We unified 378 AI predicates to 378 [2018-11-07 20:58:22,345 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:58:22,346 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:58:22,346 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-11-07 20:58:22,346 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:58:22,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 20:58:22,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 20:58:22,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2018-11-07 20:58:22,348 INFO L87 Difference]: Start difference. First operand 2707 states and 3594 transitions. Second operand 17 states. [2018-11-07 20:59:01,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:59:01,398 INFO L93 Difference]: Finished difference Result 5358 states and 7703 transitions. [2018-11-07 20:59:01,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-07 20:59:01,398 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 379 [2018-11-07 20:59:01,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:59:01,415 INFO L225 Difference]: With dead ends: 5358 [2018-11-07 20:59:01,415 INFO L226 Difference]: Without dead ends: 3595 [2018-11-07 20:59:01,421 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 387 GetRequests, 348 SyntacticMatches, 15 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2018-11-07 20:59:01,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3595 states. [2018-11-07 20:59:01,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3595 to 3363. [2018-11-07 20:59:01,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3363 states. [2018-11-07 20:59:01,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3363 states to 3363 states and 4280 transitions. [2018-11-07 20:59:01,509 INFO L78 Accepts]: Start accepts. Automaton has 3363 states and 4280 transitions. Word has length 379 [2018-11-07 20:59:01,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:59:01,510 INFO L480 AbstractCegarLoop]: Abstraction has 3363 states and 4280 transitions. [2018-11-07 20:59:01,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 20:59:01,510 INFO L276 IsEmpty]: Start isEmpty. Operand 3363 states and 4280 transitions. [2018-11-07 20:59:01,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2018-11-07 20:59:01,523 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:59:01,524 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:59:01,524 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:59:01,525 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:59:01,525 INFO L82 PathProgramCache]: Analyzing trace with hash -842165116, now seen corresponding path program 1 times [2018-11-07 20:59:01,525 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:59:01,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:59:01,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:59:01,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:59:01,526 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:59:01,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:59:01,947 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:59:02,160 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 126 proven. 217 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-07 20:59:02,160 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:59:02,161 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:59:02,161 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 492 with the following transitions: [2018-11-07 20:59:02,161 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], [455], [457], [460], [468], [476], [484], [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], [764], [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], [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], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:59:02,168 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:59:02,168 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:59:02,513 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:59:02,513 INFO L272 AbstractInterpreter]: Visited 249 different actions 492 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 20:59:02,524 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:59:02,524 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:59:03,036 INFO L227 lantSequenceWeakener]: Weakened 261 states. On average, predicates are now at 78.01% of their original sizes. [2018-11-07 20:59:03,036 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:59:11,827 INFO L415 sIntCurrentIteration]: We unified 490 AI predicates to 490 [2018-11-07 20:59:11,828 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:59:11,828 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:59:11,828 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-11-07 20:59:11,828 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:59:11,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 20:59:11,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 20:59:11,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2018-11-07 20:59:11,830 INFO L87 Difference]: Start difference. First operand 3363 states and 4280 transitions. Second operand 18 states. [2018-11-07 20:59:13,946 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:59:43,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:59:43,918 INFO L93 Difference]: Finished difference Result 6104 states and 8325 transitions. [2018-11-07 20:59:43,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-07 20:59:43,918 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 491 [2018-11-07 20:59:43,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:59:43,935 INFO L225 Difference]: With dead ends: 6104 [2018-11-07 20:59:43,936 INFO L226 Difference]: Without dead ends: 3999 [2018-11-07 20:59:43,943 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 506 GetRequests, 399 SyntacticMatches, 75 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=213, Invalid=909, Unknown=0, NotChecked=0, Total=1122 [2018-11-07 20:59:43,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3999 states. [2018-11-07 20:59:44,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3999 to 3994. [2018-11-07 20:59:44,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3994 states. [2018-11-07 20:59:44,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3994 states to 3994 states and 4945 transitions. [2018-11-07 20:59:44,045 INFO L78 Accepts]: Start accepts. Automaton has 3994 states and 4945 transitions. Word has length 491 [2018-11-07 20:59:44,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:59:44,046 INFO L480 AbstractCegarLoop]: Abstraction has 3994 states and 4945 transitions. [2018-11-07 20:59:44,046 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-07 20:59:44,046 INFO L276 IsEmpty]: Start isEmpty. Operand 3994 states and 4945 transitions. [2018-11-07 20:59:44,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2018-11-07 20:59:44,064 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:59:44,064 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, 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, 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] [2018-11-07 20:59:44,065 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:59:44,065 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:59:44,065 INFO L82 PathProgramCache]: Analyzing trace with hash -14034668, now seen corresponding path program 1 times [2018-11-07 20:59:44,065 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:59:44,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:59:44,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:59:44,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:59:44,067 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:59:44,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:59:44,547 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:59:45,052 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 126 proven. 217 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-07 20:59:45,053 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:59:45,053 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:59:45,053 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 500 with the following transitions: [2018-11-07 20:59:45,054 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], [455], [457], [460], [468], [476], [484], [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], [764], [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], [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], [1384], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:59:45,059 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:59:45,059 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:59:47,961 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:59:47,962 INFO L272 AbstractInterpreter]: Visited 257 different actions 2265 times. Merged at 5 different actions 40 times. Widened at 1 different actions 4 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:59:47,970 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:59:47,970 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:59:48,741 INFO L227 lantSequenceWeakener]: Weakened 146 states. On average, predicates are now at 78.49% of their original sizes. [2018-11-07 20:59:48,741 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:59:49,536 INFO L415 sIntCurrentIteration]: We unified 498 AI predicates to 498 [2018-11-07 20:59:49,536 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:59:49,536 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:59:49,537 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [6] total 27 [2018-11-07 20:59:49,537 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:59:49,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-07 20:59:49,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-07 20:59:49,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2018-11-07 20:59:49,538 INFO L87 Difference]: Start difference. First operand 3994 states and 4945 transitions. Second operand 23 states. [2018-11-07 20:59:51,874 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:00:20,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:00:20,841 INFO L93 Difference]: Finished difference Result 6740 states and 9001 transitions. [2018-11-07 21:00:20,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-07 21:00:20,841 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 499 [2018-11-07 21:00:20,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:00:20,859 INFO L225 Difference]: With dead ends: 6740 [2018-11-07 21:00:20,859 INFO L226 Difference]: Without dead ends: 4635 [2018-11-07 21:00:20,867 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 513 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=290, Invalid=1116, Unknown=0, NotChecked=0, Total=1406 [2018-11-07 21:00:20,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4635 states. [2018-11-07 21:00:20,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4635 to 4627. [2018-11-07 21:00:20,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4627 states. [2018-11-07 21:00:20,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 5616 transitions. [2018-11-07 21:00:20,995 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 5616 transitions. Word has length 499 [2018-11-07 21:00:20,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:00:20,996 INFO L480 AbstractCegarLoop]: Abstraction has 4627 states and 5616 transitions. [2018-11-07 21:00:20,996 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-07 21:00:20,997 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 5616 transitions. [2018-11-07 21:00:21,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2018-11-07 21:00:21,010 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:00:21,011 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:00:21,011 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:00:21,011 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:00:21,012 INFO L82 PathProgramCache]: Analyzing trace with hash 367107425, now seen corresponding path program 1 times [2018-11-07 21:00:21,012 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:00:21,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:00:21,013 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:00:21,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:00:21,013 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:00:21,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:00:23,176 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 260 proven. 200 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2018-11-07 21:00:23,176 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:00:23,176 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:00:23,177 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 584 with the following transitions: [2018-11-07 21:00:23,177 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], [455], [457], [460], [468], [476], [484], [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], [761], [764], [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], [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], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 21:00:23,181 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:00:23,181 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:00:23,245 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:00:23,982 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 21:00:23,983 INFO L272 AbstractInterpreter]: Visited 250 different actions 995 times. Merged at 7 different actions 28 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 21:00:23,989 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:00:23,989 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 21:00:24,454 INFO L227 lantSequenceWeakener]: Weakened 580 states. On average, predicates are now at 77.54% of their original sizes. [2018-11-07 21:00:24,455 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 21:00:24,575 INFO L415 sIntCurrentIteration]: We unified 582 AI predicates to 582 [2018-11-07 21:00:24,576 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 21:00:24,576 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 21:00:24,576 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [13] total 21 [2018-11-07 21:00:24,576 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:00:24,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 21:00:24,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 21:00:24,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-07 21:00:24,577 INFO L87 Difference]: Start difference. First operand 4627 states and 5616 transitions. Second operand 10 states. Received shutdown request... [2018-11-07 21:00:34,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-07 21:00:34,784 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 21:00:34,789 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 21:00:34,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:00:34 BoogieIcfgContainer [2018-11-07 21:00:34,790 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 21:00:34,790 INFO L168 Benchmark]: Toolchain (without parser) took 220521.79 ms. Allocated memory was 1.5 GB in the beginning and 5.2 GB in the end (delta: 3.6 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -1.0 GB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-11-07 21:00:34,792 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 21:00:34,792 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1194.98 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-11-07 21:00:34,793 INFO L168 Benchmark]: Boogie Procedure Inliner took 208.10 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 732.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -856.7 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2018-11-07 21:00:34,794 INFO L168 Benchmark]: Boogie Preprocessor took 149.82 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 21:00:34,794 INFO L168 Benchmark]: RCFGBuilder took 6640.13 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: 274.5 MB). Peak memory consumption was 274.5 MB. Max. memory is 7.1 GB. [2018-11-07 21:00:34,795 INFO L168 Benchmark]: TraceAbstraction took 212324.23 ms. Allocated memory was 2.3 GB in the beginning and 5.2 GB in the end (delta: 2.9 GB). Free memory was 1.9 GB in the beginning and 2.4 GB in the end (delta: -514.5 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-11-07 21:00:34,800 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1194.98 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 208.10 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 732.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -856.7 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 149.82 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 6640.13 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: 274.5 MB). Peak memory consumption was 274.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 212324.23 ms. Allocated memory was 2.3 GB in the beginning and 5.2 GB in the end (delta: 2.9 GB). Free memory was 1.9 GB in the beginning and 2.4 GB in the end (delta: -514.5 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 127]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 127). Cancelled while BasicCegarLoop was constructing difference of abstraction (4627states) and FLOYD_HOARE automaton (currently 17 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (5207 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 212.2s OverallTime, 8 OverallIterations, 5 TraceHistogramMax, 181.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2531 SDtfs, 21930 SDslu, 1850 SDs, 0 SdLazy, 28707 SolverSat, 4012 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 66.6s Time, PredicateUnifierStatistics: 12 DeclaredPredicates, 2617 GetRequests, 2335 SyntacticMatches, 128 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1467 ImplicationChecksByTransitivity, 13.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4627occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 5.9s AbstIntTime, 6 AbstIntIterations, 6 AbstIntStrong, 0.9976928600328124 AbsIntWeakeningRatio, 0.07559055118110236 AbsIntAvgWeakeningVarsNumRemoved, 13.100393700787402 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 501 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 2733 NumberOfCodeBlocks, 2733 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 2725 ConstructedInterpolants, 0 QuantifiedInterpolants, 6382841 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 1458/2594 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown