java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label11_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 09:25:37,327 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 09:25:37,329 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 09:25:37,350 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 09:25:37,351 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 09:25:37,352 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 09:25:37,354 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 09:25:37,356 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 09:25:37,359 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 09:25:37,360 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 09:25:37,362 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 09:25:37,363 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 09:25:37,364 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 09:25:37,365 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 09:25:37,373 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 09:25:37,376 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 09:25:37,377 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 09:25:37,379 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 09:25:37,384 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 09:25:37,389 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 09:25:37,393 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 09:25:37,394 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 09:25:37,396 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 09:25:37,397 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 09:25:37,397 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 09:25:37,398 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 09:25:37,399 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 09:25:37,400 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 09:25:37,400 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 09:25:37,401 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 09:25:37,401 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 09:25:37,402 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 09:25:37,402 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 09:25:37,403 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 09:25:37,404 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 09:25:37,404 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 09:25:37,405 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 09:25:37,422 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 09:25:37,422 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 09:25:37,423 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 09:25:37,423 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 09:25:37,423 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 09:25:37,423 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 09:25:37,424 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 09:25:37,425 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 09:25:37,425 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 09:25:37,425 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 09:25:37,425 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 09:25:37,425 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 09:25:37,426 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 09:25:37,426 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 09:25:37,427 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 09:25:37,427 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 09:25:37,427 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 09:25:37,428 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 09:25:37,428 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 09:25:37,428 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 09:25:37,428 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 09:25:37,428 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 09:25:37,430 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 09:25:37,430 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 09:25:37,431 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 09:25:37,431 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 09:25:37,431 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:25:37,431 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 09:25:37,431 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 09:25:37,432 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 09:25:37,432 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 09:25:37,432 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 09:25:37,432 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 09:25:37,432 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 09:25:37,432 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 09:25:37,433 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 09:25:37,495 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 09:25:37,510 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 09:25:37,517 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 09:25:37,519 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 09:25:37,519 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 09:25:37,520 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label11_true-unreach-call.c [2018-11-07 09:25:37,589 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9020f17f/9f1ac599a5184283b0c9aa172027d653/FLAG5eb4fa996 [2018-11-07 09:25:38,339 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 09:25:38,340 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label11_true-unreach-call.c [2018-11-07 09:25:38,366 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9020f17f/9f1ac599a5184283b0c9aa172027d653/FLAG5eb4fa996 [2018-11-07 09:25:38,383 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9020f17f/9f1ac599a5184283b0c9aa172027d653 [2018-11-07 09:25:38,396 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 09:25:38,399 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 09:25:38,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 09:25:38,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 09:25:38,406 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 09:25:38,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:25:38" (1/1) ... [2018-11-07 09:25:38,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ae48c7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:25:38, skipping insertion in model container [2018-11-07 09:25:38,412 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:25:38" (1/1) ... [2018-11-07 09:25:38,424 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 09:25:38,544 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 09:25:39,535 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:25:39,541 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 09:25:40,020 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:25:40,045 INFO L193 MainTranslator]: Completed translation [2018-11-07 09:25:40,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:25:40 WrapperNode [2018-11-07 09:25:40,046 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 09:25:40,047 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 09:25:40,047 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 09:25:40,047 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 09:25:40,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:25:40" (1/1) ... [2018-11-07 09:25:40,328 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:25:40" (1/1) ... [2018-11-07 09:25:40,338 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 09:25:40,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 09:25:40,339 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 09:25:40,339 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 09:25:40,351 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:25:40" (1/1) ... [2018-11-07 09:25:40,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:25:40" (1/1) ... [2018-11-07 09:25:40,374 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:25:40" (1/1) ... [2018-11-07 09:25:40,375 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:25:40" (1/1) ... [2018-11-07 09:25:40,466 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:25:40" (1/1) ... [2018-11-07 09:25:40,491 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:25:40" (1/1) ... [2018-11-07 09:25:40,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:25:40" (1/1) ... [2018-11-07 09:25:40,569 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 09:25:40,570 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 09:25:40,570 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 09:25:40,570 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 09:25:40,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:25:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:25:40,648 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 09:25:40,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 09:25:40,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 09:25:40,649 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 09:25:40,649 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 09:25:40,649 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 09:25:40,649 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 09:25:40,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 09:25:40,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 09:25:40,650 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 09:25:40,650 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 09:25:50,049 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 09:25:50,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:25:50 BoogieIcfgContainer [2018-11-07 09:25:50,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 09:25:50,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 09:25:50,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 09:25:50,055 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 09:25:50,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:25:38" (1/3) ... [2018-11-07 09:25:50,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6139fedf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:25:50, skipping insertion in model container [2018-11-07 09:25:50,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:25:40" (2/3) ... [2018-11-07 09:25:50,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6139fedf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:25:50, skipping insertion in model container [2018-11-07 09:25:50,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:25:50" (3/3) ... [2018-11-07 09:25:50,059 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label11_true-unreach-call.c [2018-11-07 09:25:50,069 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 09:25:50,079 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 09:25:50,097 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 09:25:50,140 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 09:25:50,140 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 09:25:50,140 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 09:25:50,140 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 09:25:50,141 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 09:25:50,141 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 09:25:50,141 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 09:25:50,141 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 09:25:50,176 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-11-07 09:25:50,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-11-07 09:25:50,187 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:25:50,188 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:25:50,190 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:25:50,196 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:25:50,197 INFO L82 PathProgramCache]: Analyzing trace with hash -492133930, now seen corresponding path program 1 times [2018-11-07 09:25:50,200 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:25:50,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:25:50,254 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:25:50,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:25:50,254 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:25:50,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:25:50,769 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-11-07 09:25:50,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:25:50,798 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:25:50,799 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:25:50,799 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:25:50,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:25:50,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:25:50,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:25:50,828 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-11-07 09:26:00,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:26:00,095 INFO L93 Difference]: Finished difference Result 2164 states and 4009 transitions. [2018-11-07 09:26:00,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:26:00,098 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2018-11-07 09:26:00,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:26:00,143 INFO L225 Difference]: With dead ends: 2164 [2018-11-07 09:26:00,143 INFO L226 Difference]: Without dead ends: 1554 [2018-11-07 09:26:00,160 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:26:00,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2018-11-07 09:26:00,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1052. [2018-11-07 09:26:00,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2018-11-07 09:26:00,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1882 transitions. [2018-11-07 09:26:00,325 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1882 transitions. Word has length 63 [2018-11-07 09:26:00,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:26:00,326 INFO L480 AbstractCegarLoop]: Abstraction has 1052 states and 1882 transitions. [2018-11-07 09:26:00,326 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:26:00,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1882 transitions. [2018-11-07 09:26:00,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-11-07 09:26:00,339 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:26:00,339 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 09:26:00,340 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:26:00,340 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:26:00,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1696460921, now seen corresponding path program 1 times [2018-11-07 09:26:00,340 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:26:00,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:26:00,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:26:00,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:26:00,342 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:26:00,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:26:00,704 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:26:00,705 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:26:00,705 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 09:26:00,705 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:26:00,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 09:26:00,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 09:26:00,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 09:26:00,708 INFO L87 Difference]: Start difference. First operand 1052 states and 1882 transitions. Second operand 5 states. [2018-11-07 09:26:07,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:26:07,160 INFO L93 Difference]: Finished difference Result 3031 states and 5537 transitions. [2018-11-07 09:26:07,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:26:07,163 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2018-11-07 09:26:07,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:26:07,179 INFO L225 Difference]: With dead ends: 3031 [2018-11-07 09:26:07,179 INFO L226 Difference]: Without dead ends: 1985 [2018-11-07 09:26:07,184 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 09:26:07,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2018-11-07 09:26:07,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1959. [2018-11-07 09:26:07,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2018-11-07 09:26:07,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3239 transitions. [2018-11-07 09:26:07,252 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3239 transitions. Word has length 135 [2018-11-07 09:26:07,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:26:07,253 INFO L480 AbstractCegarLoop]: Abstraction has 1959 states and 3239 transitions. [2018-11-07 09:26:07,253 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 09:26:07,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3239 transitions. [2018-11-07 09:26:07,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-11-07 09:26:07,258 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:26:07,258 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 09:26:07,259 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:26:07,259 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:26:07,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1297606689, now seen corresponding path program 1 times [2018-11-07 09:26:07,259 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:26:07,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:26:07,260 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:26:07,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:26:07,261 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:26:07,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:26:07,564 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:26:07,565 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:26:07,565 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:26:07,566 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 139 with the following transitions: [2018-11-07 09:26:07,568 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1114], [1116], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 09:26:07,614 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:26:07,614 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:26:08,606 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:26:08,607 INFO L272 AbstractInterpreter]: Visited 83 different actions 235 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 09:26:08,646 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:26:08,650 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:26:08,650 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:26:08,651 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:26:08,667 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:26:08,668 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:26:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:26:08,766 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:26:11,456 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 21 [2018-11-07 09:26:13,398 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:26:13,398 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:26:13,786 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-11-07 09:26:13,967 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:26:14,006 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 09:26:14,006 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 6] total 11 [2018-11-07 09:26:14,006 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:26:14,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:26:14,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:26:14,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=78, Unknown=2, NotChecked=0, Total=110 [2018-11-07 09:26:14,009 INFO L87 Difference]: Start difference. First operand 1959 states and 3239 transitions. Second operand 3 states. [2018-11-07 09:26:18,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:26:18,790 INFO L93 Difference]: Finished difference Result 5693 states and 9655 transitions. [2018-11-07 09:26:18,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:26:18,791 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2018-11-07 09:26:18,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:26:18,816 INFO L225 Difference]: With dead ends: 5693 [2018-11-07 09:26:18,816 INFO L226 Difference]: Without dead ends: 3740 [2018-11-07 09:26:18,828 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 272 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=30, Invalid=78, Unknown=2, NotChecked=0, Total=110 [2018-11-07 09:26:18,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3740 states. [2018-11-07 09:26:18,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3740 to 3734. [2018-11-07 09:26:18,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3734 states. [2018-11-07 09:26:18,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3734 states to 3734 states and 6077 transitions. [2018-11-07 09:26:18,930 INFO L78 Accepts]: Start accepts. Automaton has 3734 states and 6077 transitions. Word has length 138 [2018-11-07 09:26:18,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:26:18,931 INFO L480 AbstractCegarLoop]: Abstraction has 3734 states and 6077 transitions. [2018-11-07 09:26:18,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:26:18,932 INFO L276 IsEmpty]: Start isEmpty. Operand 3734 states and 6077 transitions. [2018-11-07 09:26:18,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-11-07 09:26:18,941 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:26:18,941 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:26:18,942 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:26:18,942 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:26:18,942 INFO L82 PathProgramCache]: Analyzing trace with hash -291330969, now seen corresponding path program 1 times [2018-11-07 09:26:18,942 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:26:18,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:26:18,943 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:26:18,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:26:18,944 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:26:18,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:26:19,277 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 113 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-07 09:26:19,277 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:26:19,278 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:26:19,278 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 236 with the following transitions: [2018-11-07 09:26:19,278 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1114], [1116], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1310], [1315], [1317], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 09:26:19,283 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:26:19,284 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:26:19,791 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:26:19,791 INFO L272 AbstractInterpreter]: Visited 104 different actions 298 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 09:26:19,828 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:26:19,829 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:26:19,829 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:26:19,829 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:26:19,847 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:26:19,847 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:26:19,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:26:19,939 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:26:20,315 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 185 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:26:20,315 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:26:20,575 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-11-07 09:26:20,908 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 185 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:26:20,941 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:26:20,941 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-07 09:26:20,942 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:26:20,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 09:26:20,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 09:26:20,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-11-07 09:26:20,947 INFO L87 Difference]: Start difference. First operand 3734 states and 6077 transitions. Second operand 9 states. [2018-11-07 09:26:27,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:26:27,505 INFO L93 Difference]: Finished difference Result 9302 states and 15012 transitions. [2018-11-07 09:26:27,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 09:26:27,506 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 235 [2018-11-07 09:26:27,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:26:27,527 INFO L225 Difference]: With dead ends: 9302 [2018-11-07 09:26:27,527 INFO L226 Difference]: Without dead ends: 4595 [2018-11-07 09:26:27,553 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 468 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2018-11-07 09:26:27,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4595 states. [2018-11-07 09:26:27,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4595 to 4560. [2018-11-07 09:26:27,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4560 states. [2018-11-07 09:26:27,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4560 states to 4560 states and 5524 transitions. [2018-11-07 09:26:27,671 INFO L78 Accepts]: Start accepts. Automaton has 4560 states and 5524 transitions. Word has length 235 [2018-11-07 09:26:27,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:26:27,673 INFO L480 AbstractCegarLoop]: Abstraction has 4560 states and 5524 transitions. [2018-11-07 09:26:27,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 09:26:27,674 INFO L276 IsEmpty]: Start isEmpty. Operand 4560 states and 5524 transitions. [2018-11-07 09:26:27,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2018-11-07 09:26:27,681 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:26:27,681 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:26:27,681 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:26:27,681 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:26:27,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1705786468, now seen corresponding path program 1 times [2018-11-07 09:26:27,682 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:26:27,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:26:27,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:26:27,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:26:27,683 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:26:27,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:26:28,495 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 170 proven. 19 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2018-11-07 09:26:28,495 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:26:28,495 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:26:28,496 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 334 with the following transitions: [2018-11-07 09:26:28,496 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1114], [1116], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1211], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 09:26:28,501 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:26:28,501 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:26:29,360 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:26:29,360 INFO L272 AbstractInterpreter]: Visited 120 different actions 242 times. Merged at 8 different actions 14 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 26 variables. [2018-11-07 09:26:29,398 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:26:29,398 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:26:29,398 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:26:29,399 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:26:29,413 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:26:29,413 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:26:29,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:26:29,542 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:26:30,236 WARN L179 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 21 [2018-11-07 09:26:30,971 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 341 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-11-07 09:26:30,971 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:26:31,232 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 37 [2018-11-07 09:26:31,982 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 09:26:32,137 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 18 [2018-11-07 09:26:33,006 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 174 proven. 221 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 09:26:33,027 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:26:33,027 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2018-11-07 09:26:33,027 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:26:33,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-07 09:26:33,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-07 09:26:33,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2018-11-07 09:26:33,031 INFO L87 Difference]: Start difference. First operand 4560 states and 5524 transitions. Second operand 15 states. [2018-11-07 09:26:59,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:26:59,707 INFO L93 Difference]: Finished difference Result 28496 states and 37267 transitions. [2018-11-07 09:26:59,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-11-07 09:26:59,709 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 333 [2018-11-07 09:26:59,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:26:59,828 INFO L225 Difference]: With dead ends: 28496 [2018-11-07 09:26:59,828 INFO L226 Difference]: Without dead ends: 23053 [2018-11-07 09:26:59,883 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 725 GetRequests, 658 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1240 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=812, Invalid=3610, Unknown=0, NotChecked=0, Total=4422 [2018-11-07 09:26:59,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23053 states. [2018-11-07 09:27:00,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23053 to 21928. [2018-11-07 09:27:00,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21928 states. [2018-11-07 09:27:00,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21928 states to 21928 states and 26256 transitions. [2018-11-07 09:27:00,507 INFO L78 Accepts]: Start accepts. Automaton has 21928 states and 26256 transitions. Word has length 333 [2018-11-07 09:27:00,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:27:00,507 INFO L480 AbstractCegarLoop]: Abstraction has 21928 states and 26256 transitions. [2018-11-07 09:27:00,508 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-07 09:27:00,508 INFO L276 IsEmpty]: Start isEmpty. Operand 21928 states and 26256 transitions. [2018-11-07 09:27:00,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2018-11-07 09:27:00,525 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:27:00,526 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:27:00,526 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:27:00,526 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:27:00,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1877965642, now seen corresponding path program 1 times [2018-11-07 09:27:00,527 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:27:00,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:27:00,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:27:00,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:27:00,528 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:27:00,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:27:01,368 WARN L179 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 17 [2018-11-07 09:27:01,697 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-11-07 09:27:02,004 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:27:02,004 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:27:02,004 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:27:02,005 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 412 with the following transitions: [2018-11-07 09:27:02,006 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [45], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [115], [119], [123], [127], [138], [142], [146], [150], [154], [158], [169], [173], [177], [181], [185], [189], [193], [204], [208], [212], [216], [227], [231], [235], [239], [250], [254], [258], [262], [266], [270], [273], [710], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1114], [1116], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-11-07 09:27:02,015 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:27:02,016 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:27:02,984 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:27:02,984 INFO L272 AbstractInterpreter]: Visited 356 different actions 1054 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 09:27:03,021 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:27:03,022 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:27:03,022 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:27:03,022 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:27:03,033 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:27:03,033 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:27:03,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:27:03,150 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:27:05,418 WARN L179 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 38 [2018-11-07 09:27:05,572 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:27:05,572 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:27:05,883 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 36 [2018-11-07 09:27:07,889 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:27:07,909 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 09:27:07,909 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2018-11-07 09:27:07,909 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:27:07,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:27:07,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:27:07,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-11-07 09:27:07,911 INFO L87 Difference]: Start difference. First operand 21928 states and 26256 transitions. Second operand 6 states. [2018-11-07 09:27:22,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:27:22,504 INFO L93 Difference]: Finished difference Result 52587 states and 63225 transitions. [2018-11-07 09:27:22,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:27:22,507 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 411 [2018-11-07 09:27:22,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:27:22,605 INFO L225 Difference]: With dead ends: 52587 [2018-11-07 09:27:22,605 INFO L226 Difference]: Without dead ends: 31105 [2018-11-07 09:27:22,650 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 833 GetRequests, 816 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2018-11-07 09:27:22,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31105 states. [2018-11-07 09:27:23,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31105 to 31073. [2018-11-07 09:27:23,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31073 states. [2018-11-07 09:27:23,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31073 states to 31073 states and 37197 transitions. [2018-11-07 09:27:23,477 INFO L78 Accepts]: Start accepts. Automaton has 31073 states and 37197 transitions. Word has length 411 [2018-11-07 09:27:23,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:27:23,479 INFO L480 AbstractCegarLoop]: Abstraction has 31073 states and 37197 transitions. [2018-11-07 09:27:23,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:27:23,479 INFO L276 IsEmpty]: Start isEmpty. Operand 31073 states and 37197 transitions. [2018-11-07 09:27:23,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2018-11-07 09:27:23,505 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:27:23,505 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:27:23,506 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:27:23,506 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:27:23,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1258249865, now seen corresponding path program 1 times [2018-11-07 09:27:23,506 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:27:23,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:27:23,507 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:27:23,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:27:23,507 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:27:23,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:27:24,011 INFO L134 CoverageAnalysis]: Checked inductivity of 724 backedges. 240 proven. 2 refuted. 0 times theorem prover too weak. 482 trivial. 0 not checked. [2018-11-07 09:27:24,011 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:27:24,011 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:27:24,012 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 468 with the following transitions: [2018-11-07 09:27:24,012 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1114], [1116], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1211], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1376], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1508], [1511], [1515], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 09:27:24,016 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:27:24,016 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:27:24,735 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:27:24,736 INFO L272 AbstractInterpreter]: Visited 146 different actions 293 times. Merged at 8 different actions 14 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 26 variables. [2018-11-07 09:27:24,772 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:27:24,773 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:27:24,773 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:27:24,773 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:27:24,788 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:27:24,789 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:27:24,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:27:24,925 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:27:25,175 INFO L134 CoverageAnalysis]: Checked inductivity of 724 backedges. 557 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2018-11-07 09:27:25,175 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:27:25,794 INFO L134 CoverageAnalysis]: Checked inductivity of 724 backedges. 246 proven. 8 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2018-11-07 09:27:25,824 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 09:27:25,825 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2018-11-07 09:27:25,825 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:27:25,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:27:25,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:27:25,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:27:25,827 INFO L87 Difference]: Start difference. First operand 31073 states and 37197 transitions. Second operand 3 states. [2018-11-07 09:27:28,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:27:28,156 INFO L93 Difference]: Finished difference Result 60337 states and 72358 transitions. [2018-11-07 09:27:28,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:27:28,156 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 467 [2018-11-07 09:27:28,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:27:28,232 INFO L225 Difference]: With dead ends: 60337 [2018-11-07 09:27:28,232 INFO L226 Difference]: Without dead ends: 29708 [2018-11-07 09:27:28,283 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 937 GetRequests, 930 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:27:28,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29708 states. [2018-11-07 09:27:28,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29708 to 29704. [2018-11-07 09:27:28,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29704 states. [2018-11-07 09:27:28,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29704 states to 29704 states and 35417 transitions. [2018-11-07 09:27:28,769 INFO L78 Accepts]: Start accepts. Automaton has 29704 states and 35417 transitions. Word has length 467 [2018-11-07 09:27:28,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:27:28,770 INFO L480 AbstractCegarLoop]: Abstraction has 29704 states and 35417 transitions. [2018-11-07 09:27:28,770 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:27:28,770 INFO L276 IsEmpty]: Start isEmpty. Operand 29704 states and 35417 transitions. [2018-11-07 09:27:28,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2018-11-07 09:27:28,798 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:27:28,798 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 09:27:28,798 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:27:28,799 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:27:28,799 INFO L82 PathProgramCache]: Analyzing trace with hash -404401180, now seen corresponding path program 1 times [2018-11-07 09:27:28,799 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:27:28,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:27:28,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:27:28,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:27:28,800 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:27:28,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:27:29,338 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 166 proven. 180 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2018-11-07 09:27:29,338 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:27:29,338 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:27:29,339 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 488 with the following transitions: [2018-11-07 09:27:29,339 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1114], [1116], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1658], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1720], [1723], [1727], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 09:27:29,343 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:27:29,343 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:27:29,657 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:27:29,657 INFO L272 AbstractInterpreter]: Visited 185 different actions 370 times. Merged at 8 different actions 14 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 26 variables. [2018-11-07 09:27:29,699 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:27:29,699 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:27:29,699 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:27:29,699 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:27:29,718 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:27:29,718 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:27:29,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:27:29,874 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:27:30,606 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 418 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-07 09:27:30,606 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:27:31,355 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 418 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-07 09:27:31,375 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:27:31,376 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2018-11-07 09:27:31,376 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:27:31,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-07 09:27:31,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-07 09:27:31,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2018-11-07 09:27:31,377 INFO L87 Difference]: Start difference. First operand 29704 states and 35417 transitions. Second operand 12 states. [2018-11-07 09:27:48,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:27:48,949 INFO L93 Difference]: Finished difference Result 78694 states and 95452 transitions. [2018-11-07 09:27:48,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-11-07 09:27:48,950 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 487 [2018-11-07 09:27:48,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:27:49,075 INFO L225 Difference]: With dead ends: 78694 [2018-11-07 09:27:49,075 INFO L226 Difference]: Without dead ends: 49437 [2018-11-07 09:27:49,134 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1064 GetRequests, 1006 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 988 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=611, Invalid=2695, Unknown=0, NotChecked=0, Total=3306 [2018-11-07 09:27:49,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49437 states. [2018-11-07 09:27:49,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49437 to 46806. [2018-11-07 09:27:49,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46806 states. [2018-11-07 09:27:49,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46806 states to 46806 states and 55337 transitions. [2018-11-07 09:27:49,865 INFO L78 Accepts]: Start accepts. Automaton has 46806 states and 55337 transitions. Word has length 487 [2018-11-07 09:27:49,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:27:49,866 INFO L480 AbstractCegarLoop]: Abstraction has 46806 states and 55337 transitions. [2018-11-07 09:27:49,866 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-07 09:27:49,866 INFO L276 IsEmpty]: Start isEmpty. Operand 46806 states and 55337 transitions. [2018-11-07 09:27:49,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2018-11-07 09:27:49,905 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:27:49,905 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:27:49,906 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:27:49,906 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:27:49,906 INFO L82 PathProgramCache]: Analyzing trace with hash -73523263, now seen corresponding path program 1 times [2018-11-07 09:27:49,906 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:27:49,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:27:49,907 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:27:49,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:27:49,907 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:27:49,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:27:50,878 WARN L179 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-11-07 09:27:51,089 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-11-07 09:27:52,277 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 237 proven. 462 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-11-07 09:27:52,278 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:27:52,278 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:27:52,278 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 566 with the following transitions: [2018-11-07 09:27:52,278 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1114], [1116], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1211], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1681], [1686], [1688], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1720], [1725], [1727], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 09:27:52,282 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:27:52,282 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:27:53,193 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:27:53,193 INFO L272 AbstractInterpreter]: Visited 188 different actions 374 times. Merged at 8 different actions 14 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-07 09:27:53,229 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:27:53,230 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:27:53,230 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:27:53,230 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:27:53,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:27:53,241 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:27:53,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:27:53,398 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:27:54,728 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 28 [2018-11-07 09:27:55,188 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 540 proven. 55 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2018-11-07 09:27:55,188 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:27:55,827 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-11-07 09:27:55,916 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 108 [2018-11-07 09:27:57,045 WARN L179 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 38 [2018-11-07 09:27:58,082 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 239 proven. 460 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-11-07 09:27:58,235 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:27:58,236 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 30 [2018-11-07 09:27:58,236 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:27:58,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-07 09:27:58,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-07 09:27:58,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=724, Unknown=0, NotChecked=0, Total=870 [2018-11-07 09:27:58,238 INFO L87 Difference]: Start difference. First operand 46806 states and 55337 transitions. Second operand 22 states. [2018-11-07 09:28:01,983 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2018-11-07 09:28:04,193 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2018-11-07 09:28:06,525 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2018-11-07 09:28:07,235 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 43 [2018-11-07 09:28:08,735 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2018-11-07 09:28:11,251 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 45 [2018-11-07 09:28:14,587 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2018-11-07 09:28:15,723 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 42 [2018-11-07 09:28:16,448 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2018-11-07 09:28:19,190 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2018-11-07 09:28:20,895 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2018-11-07 09:28:21,199 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2018-11-07 09:28:28,410 WARN L179 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 14 [2018-11-07 09:28:35,489 WARN L179 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2018-11-07 09:28:39,780 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 45 [2018-11-07 09:28:46,583 WARN L179 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 46 [2018-11-07 09:28:59,121 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2018-11-07 09:29:17,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:29:17,735 INFO L93 Difference]: Finished difference Result 161893 states and 210921 transitions. [2018-11-07 09:29:17,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-11-07 09:29:17,738 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 565 [2018-11-07 09:29:17,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:29:18,287 INFO L225 Difference]: With dead ends: 161893 [2018-11-07 09:29:18,287 INFO L226 Difference]: Without dead ends: 108637 [2018-11-07 09:29:18,487 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1400 GetRequests, 1215 SyntacticMatches, 10 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11800 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=4859, Invalid=26293, Unknown=0, NotChecked=0, Total=31152 [2018-11-07 09:29:18,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108637 states. [2018-11-07 09:29:20,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108637 to 99962. [2018-11-07 09:29:20,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99962 states. [2018-11-07 09:29:21,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99962 states to 99962 states and 123369 transitions. [2018-11-07 09:29:21,651 INFO L78 Accepts]: Start accepts. Automaton has 99962 states and 123369 transitions. Word has length 565 [2018-11-07 09:29:21,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:29:21,652 INFO L480 AbstractCegarLoop]: Abstraction has 99962 states and 123369 transitions. [2018-11-07 09:29:21,652 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-07 09:29:21,652 INFO L276 IsEmpty]: Start isEmpty. Operand 99962 states and 123369 transitions. [2018-11-07 09:29:21,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2018-11-07 09:29:21,697 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:29:21,697 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:29:21,697 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:29:21,699 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:29:21,699 INFO L82 PathProgramCache]: Analyzing trace with hash -735551284, now seen corresponding path program 1 times [2018-11-07 09:29:21,699 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:29:21,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:29:21,700 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:29:21,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:29:21,700 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:29:21,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:29:22,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1135 backedges. 604 proven. 71 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2018-11-07 09:29:22,292 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:29:22,292 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:29:22,292 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 608 with the following transitions: [2018-11-07 09:29:22,292 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1114], [1116], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1211], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1278], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1478], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1681], [1686], [1688], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 09:29:22,296 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:29:22,296 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-11-07 09:29:22,854 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-07 09:29:22,855 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-07 09:29:22,855 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 09:29:22,855 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:29:22,856 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:29:22,869 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:29:22,869 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:29:23,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:29:23,052 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:29:23,061 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-07 09:29:23,262 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:29:23,263 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 09:29:23,268 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 09:29:23,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:29:23 BoogieIcfgContainer [2018-11-07 09:29:23,268 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 09:29:23,269 INFO L168 Benchmark]: Toolchain (without parser) took 224872.44 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -625.6 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-11-07 09:29:23,271 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 09:29:23,271 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1646.03 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-11-07 09:29:23,273 INFO L168 Benchmark]: Boogie Procedure Inliner took 291.87 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 766.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -948.9 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. [2018-11-07 09:29:23,274 INFO L168 Benchmark]: Boogie Preprocessor took 230.69 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: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2018-11-07 09:29:23,274 INFO L168 Benchmark]: RCFGBuilder took 9480.30 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 473.3 MB). Peak memory consumption was 473.3 MB. Max. memory is 7.1 GB. [2018-11-07 09:29:23,276 INFO L168 Benchmark]: TraceAbstraction took 213217.49 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.7 GB in the beginning and 2.0 GB in the end (delta: -301.4 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-11-07 09:29:23,282 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 1646.03 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 291.87 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 766.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -948.9 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 230.69 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: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9480.30 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 473.3 MB). Peak memory consumption was 473.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 213217.49 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.7 GB in the beginning and 2.0 GB in the end (delta: -301.4 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 176]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 176). Cancelled while BasicCegarLoop was analyzing trace of length 608 with TraceHistMax 6,while TraceCheckSpWp was constructing forward predicates,while XnfDer was eliminating 1 quantified variables from 1 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 213.1s OverallTime, 10 OverallIterations, 6 TraceHistogramMax, 169.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2396 SDtfs, 42479 SDslu, 5507 SDs, 0 SdLazy, 87924 SolverSat, 12596 SolverUnsat, 276 SolverUnknown, 0 SolverNotchecked, 128.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5745 GetRequests, 5371 SyntacticMatches, 29 SemanticMatches, 345 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14136 ImplicationChecksByTransitivity, 32.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99962occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 6.1s AbstIntTime, 8 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 6.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 13036 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 26.5s InterpolantComputationTime, 5470 NumberOfCodeBlocks, 5470 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 8083 ConstructedInterpolants, 611 QuantifiedInterpolants, 24181625 SizeOfPredicates, 30 NumberOfNonLiveVariables, 4155 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 23 InterpolantComputations, 5 PerfectInterpolantSequences, 6543/8183 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown