java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label55_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 20:56:50,343 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 20:56:50,345 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 20:56:50,362 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 20:56:50,362 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 20:56:50,364 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 20:56:50,365 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 20:56:50,368 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 20:56:50,370 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 20:56:50,372 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 20:56:50,373 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 20:56:50,373 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 20:56:50,374 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 20:56:50,375 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 20:56:50,379 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 20:56:50,380 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 20:56:50,389 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 20:56:50,391 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 20:56:50,397 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 20:56:50,399 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 20:56:50,402 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 20:56:50,403 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 20:56:50,405 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 20:56:50,406 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 20:56:50,407 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 20:56:50,408 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 20:56:50,412 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 20:56:50,413 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 20:56:50,414 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 20:56:50,417 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 20:56:50,418 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 20:56:50,418 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 20:56:50,418 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 20:56:50,419 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 20:56:50,421 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 20:56:50,422 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 20:56:50,423 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 20:56:50,455 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 20:56:50,455 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 20:56:50,456 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 20:56:50,456 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 20:56:50,456 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 20:56:50,456 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 20:56:50,457 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 20:56:50,457 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 20:56:50,457 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 20:56:50,458 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 20:56:50,458 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 20:56:50,458 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 20:56:50,458 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 20:56:50,459 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 20:56:50,459 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 20:56:50,459 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 20:56:50,459 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 20:56:50,460 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 20:56:50,460 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 20:56:50,460 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 20:56:50,460 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 20:56:50,460 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 20:56:50,461 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 20:56:50,461 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 20:56:50,461 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 20:56:50,461 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:56:50,461 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 20:56:50,463 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 20:56:50,463 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 20:56:50,463 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 20:56:50,464 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 20:56:50,464 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 20:56:50,464 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 20:56:50,464 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 20:56:50,464 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 20:56:50,520 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 20:56:50,537 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 20:56:50,542 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 20:56:50,544 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 20:56:50,544 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 20:56:50,545 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label55_true-unreach-call.c [2018-11-07 20:56:50,616 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff5f86154/6095f1471e4242e2ad400c557b5fdbf9/FLAG41f536466 [2018-11-07 20:56:51,344 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 20:56:51,346 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label55_true-unreach-call.c [2018-11-07 20:56:51,367 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff5f86154/6095f1471e4242e2ad400c557b5fdbf9/FLAG41f536466 [2018-11-07 20:56:51,386 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff5f86154/6095f1471e4242e2ad400c557b5fdbf9 [2018-11-07 20:56:51,398 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 20:56:51,400 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 20:56:51,401 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 20:56:51,401 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 20:56:51,408 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 20:56:51,409 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:56:51" (1/1) ... [2018-11-07 20:56:51,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20906018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:51, skipping insertion in model container [2018-11-07 20:56:51,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:56:51" (1/1) ... [2018-11-07 20:56:51,423 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 20:56:51,510 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 20:56:52,209 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:56:52,214 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 20:56:52,527 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:56:52,550 INFO L193 MainTranslator]: Completed translation [2018-11-07 20:56:52,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:52 WrapperNode [2018-11-07 20:56:52,551 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 20:56:52,552 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 20:56:52,553 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 20:56:52,553 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 20:56:52,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:52" (1/1) ... [2018-11-07 20:56:52,716 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:52" (1/1) ... [2018-11-07 20:56:52,724 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 20:56:52,724 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 20:56:52,725 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 20:56:52,725 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 20:56:52,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:52" (1/1) ... [2018-11-07 20:56:52,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:52" (1/1) ... [2018-11-07 20:56:52,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:52" (1/1) ... [2018-11-07 20:56:52,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:52" (1/1) ... [2018-11-07 20:56:52,808 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:52" (1/1) ... [2018-11-07 20:56:52,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:52" (1/1) ... [2018-11-07 20:56:52,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:52" (1/1) ... [2018-11-07 20:56:52,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 20:56:52,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 20:56:52,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 20:56:52,860 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 20:56:52,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:56:52,924 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 20:56:52,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 20:56:52,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 20:56:52,925 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 20:56:52,925 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 20:56:52,925 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 20:56:52,925 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 20:56:52,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 20:56:52,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 20:56:52,926 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 20:56:52,926 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 20:56:58,543 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 20:56:58,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:56:58 BoogieIcfgContainer [2018-11-07 20:56:58,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 20:56:58,545 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 20:56:58,546 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 20:56:58,549 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 20:56:58,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:56:51" (1/3) ... [2018-11-07 20:56:58,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b2496c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:56:58, skipping insertion in model container [2018-11-07 20:56:58,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:56:52" (2/3) ... [2018-11-07 20:56:58,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b2496c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:56:58, skipping insertion in model container [2018-11-07 20:56:58,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:56:58" (3/3) ... [2018-11-07 20:56:58,553 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label55_true-unreach-call.c [2018-11-07 20:56:58,563 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 20:56:58,572 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 20:56:58,588 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 20:56:58,629 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 20:56:58,629 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 20:56:58,630 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 20:56:58,630 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 20:56:58,630 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 20:56:58,630 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 20:56:58,630 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 20:56:58,631 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 20:56:58,663 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-07 20:56:58,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-11-07 20:56:58,674 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:56:58,675 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, 1] [2018-11-07 20:56:58,677 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:56:58,684 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:56:58,684 INFO L82 PathProgramCache]: Analyzing trace with hash 886904748, now seen corresponding path program 1 times [2018-11-07 20:56:58,686 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:56:58,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:56:58,735 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:56:58,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:56:58,735 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:56:58,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:56:59,176 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:56:59,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:56:59,321 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:56:59,321 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 20:56:59,322 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:56:59,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 20:56:59,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 20:56:59,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 20:56:59,348 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-07 20:57:03,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:57:03,210 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-07 20:57:03,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 20:57:03,213 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2018-11-07 20:57:03,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:57:03,242 INFO L225 Difference]: With dead ends: 1156 [2018-11-07 20:57:03,243 INFO L226 Difference]: Without dead ends: 744 [2018-11-07 20:57:03,258 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 20:57:03,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-07 20:57:03,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-07 20:57:03,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-07 20:57:03,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1353 transitions. [2018-11-07 20:57:03,379 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1353 transitions. Word has length 64 [2018-11-07 20:57:03,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:57:03,380 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1353 transitions. [2018-11-07 20:57:03,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 20:57:03,380 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1353 transitions. [2018-11-07 20:57:03,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-11-07 20:57:03,391 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:57:03,392 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:57:03,392 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:57:03,393 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:57:03,393 INFO L82 PathProgramCache]: Analyzing trace with hash -350572761, now seen corresponding path program 1 times [2018-11-07 20:57:03,394 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:57:03,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:57:03,395 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:57:03,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:57:03,396 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:57:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:57:03,802 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:57:03,803 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:57:03,803 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:57:03,803 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:57:03,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:57:03,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:57:03,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:57:03,806 INFO L87 Difference]: Start difference. First operand 744 states and 1353 transitions. Second operand 6 states. [2018-11-07 20:57:10,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:57:10,538 INFO L93 Difference]: Finished difference Result 2184 states and 3997 transitions. [2018-11-07 20:57:10,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:57:10,543 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2018-11-07 20:57:10,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:57:10,557 INFO L225 Difference]: With dead ends: 2184 [2018-11-07 20:57:10,557 INFO L226 Difference]: Without dead ends: 1446 [2018-11-07 20:57:10,563 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 20:57:10,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2018-11-07 20:57:10,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1425. [2018-11-07 20:57:10,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2018-11-07 20:57:10,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2267 transitions. [2018-11-07 20:57:10,646 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2267 transitions. Word has length 157 [2018-11-07 20:57:10,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:57:10,647 INFO L480 AbstractCegarLoop]: Abstraction has 1425 states and 2267 transitions. [2018-11-07 20:57:10,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:57:10,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2267 transitions. [2018-11-07 20:57:10,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-11-07 20:57:10,661 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:57:10,662 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:57:10,662 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:57:10,662 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:57:10,665 INFO L82 PathProgramCache]: Analyzing trace with hash -10136240, now seen corresponding path program 1 times [2018-11-07 20:57:10,665 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:57:10,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:57:10,667 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:57:10,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:57:10,667 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:57:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:57:11,095 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 114 proven. 88 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 20:57:11,095 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:57:11,096 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:57:11,096 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 269 with the following transitions: [2018-11-07 20:57:11,099 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [591], [593], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:57:11,148 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:57:11,148 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:57:11,959 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:57:11,961 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 20:57:12,002 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:57:12,002 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:57:12,984 INFO L227 lantSequenceWeakener]: Weakened 246 states. On average, predicates are now at 78.22% of their original sizes. [2018-11-07 20:57:12,984 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:57:14,107 INFO L415 sIntCurrentIteration]: We unified 267 AI predicates to 267 [2018-11-07 20:57:14,108 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:57:14,109 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:57:14,109 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-11-07 20:57:14,110 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:57:14,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 20:57:14,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 20:57:14,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-07 20:57:14,111 INFO L87 Difference]: Start difference. First operand 1425 states and 2267 transitions. Second operand 10 states. [2018-11-07 20:57:18,473 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:57:43,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:57:43,588 INFO L93 Difference]: Finished difference Result 3187 states and 5096 transitions. [2018-11-07 20:57:43,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 20:57:43,588 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 268 [2018-11-07 20:57:43,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:57:43,601 INFO L225 Difference]: With dead ends: 3187 [2018-11-07 20:57:43,601 INFO L226 Difference]: Without dead ends: 1768 [2018-11-07 20:57:43,606 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 271 GetRequests, 239 SyntacticMatches, 20 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-11-07 20:57:43,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1768 states. [2018-11-07 20:57:43,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1768 to 1763. [2018-11-07 20:57:43,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1763 states. [2018-11-07 20:57:43,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2612 transitions. [2018-11-07 20:57:43,661 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2612 transitions. Word has length 268 [2018-11-07 20:57:43,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:57:43,662 INFO L480 AbstractCegarLoop]: Abstraction has 1763 states and 2612 transitions. [2018-11-07 20:57:43,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 20:57:43,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2612 transitions. [2018-11-07 20:57:43,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-11-07 20:57:43,674 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:57:43,674 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, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:57:43,674 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:57:43,675 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:57:43,675 INFO L82 PathProgramCache]: Analyzing trace with hash 448622162, now seen corresponding path program 1 times [2018-11-07 20:57:43,675 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:57:43,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:57:43,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:57:43,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:57:43,677 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:57:43,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:57:44,029 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:57:44,542 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 177 proven. 197 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-07 20:57:44,543 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:57:44,543 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:57:44,543 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 361 with the following transitions: [2018-11-07 20:57:44,544 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [591], [593], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:57:44,552 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:57:44,552 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:57:44,650 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:57:44,876 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:57:44,876 INFO L272 AbstractInterpreter]: Visited 120 different actions 347 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:57:44,890 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:57:44,890 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:57:45,688 INFO L227 lantSequenceWeakener]: Weakened 116 states. On average, predicates are now at 78.68% of their original sizes. [2018-11-07 20:57:45,689 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:57:47,862 INFO L415 sIntCurrentIteration]: We unified 359 AI predicates to 359 [2018-11-07 20:57:47,862 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:57:47,863 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:57:47,863 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-11-07 20:57:47,863 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:57:47,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-07 20:57:47,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-07 20:57:47,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2018-11-07 20:57:47,864 INFO L87 Difference]: Start difference. First operand 1763 states and 2612 transitions. Second operand 19 states. [2018-11-07 20:58:17,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:58:17,796 INFO L93 Difference]: Finished difference Result 4356 states and 6646 transitions. [2018-11-07 20:58:17,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-07 20:58:17,797 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 360 [2018-11-07 20:58:17,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:58:17,810 INFO L225 Difference]: With dead ends: 4356 [2018-11-07 20:58:17,811 INFO L226 Difference]: Without dead ends: 2937 [2018-11-07 20:58:17,816 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 369 GetRequests, 319 SyntacticMatches, 23 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=197, Invalid=615, Unknown=0, NotChecked=0, Total=812 [2018-11-07 20:58:17,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2018-11-07 20:58:17,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 2707. [2018-11-07 20:58:17,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2707 states. [2018-11-07 20:58:17,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2707 states to 2707 states and 3594 transitions. [2018-11-07 20:58:17,886 INFO L78 Accepts]: Start accepts. Automaton has 2707 states and 3594 transitions. Word has length 360 [2018-11-07 20:58:17,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:58:17,887 INFO L480 AbstractCegarLoop]: Abstraction has 2707 states and 3594 transitions. [2018-11-07 20:58:17,887 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-07 20:58:17,887 INFO L276 IsEmpty]: Start isEmpty. Operand 2707 states and 3594 transitions. [2018-11-07 20:58:17,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2018-11-07 20:58:17,896 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:58:17,897 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, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:58:17,897 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:58:17,897 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:58:17,898 INFO L82 PathProgramCache]: Analyzing trace with hash -813557942, now seen corresponding path program 1 times [2018-11-07 20:58:17,898 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:58:17,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:58:17,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:58:17,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:58:17,899 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:58:17,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:58:18,301 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 177 proven. 217 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-07 20:58:18,302 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:58:18,302 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:58:18,302 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 397 with the following transitions: [2018-11-07 20:58:18,303 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [591], [593], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [904], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:58:18,307 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:58:18,308 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:58:18,386 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:58:18,723 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:58:18,724 INFO L272 AbstractInterpreter]: Visited 137 different actions 398 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:58:18,766 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:58:18,766 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:58:19,304 INFO L227 lantSequenceWeakener]: Weakened 93 states. On average, predicates are now at 77.91% of their original sizes. [2018-11-07 20:58:19,304 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:58:19,786 INFO L415 sIntCurrentIteration]: We unified 395 AI predicates to 395 [2018-11-07 20:58:19,786 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:58:19,786 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:58:19,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-11-07 20:58:19,787 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:58:19,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 20:58:19,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 20:58:19,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2018-11-07 20:58:19,789 INFO L87 Difference]: Start difference. First operand 2707 states and 3594 transitions. Second operand 17 states. [2018-11-07 20:59:07,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:59:07,223 INFO L93 Difference]: Finished difference Result 5628 states and 8152 transitions. [2018-11-07 20:59:07,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-07 20:59:07,224 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 396 [2018-11-07 20:59:07,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:59:07,240 INFO L225 Difference]: With dead ends: 5628 [2018-11-07 20:59:07,241 INFO L226 Difference]: Without dead ends: 3865 [2018-11-07 20:59:07,247 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 402 GetRequests, 372 SyntacticMatches, 8 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=424, Unknown=0, NotChecked=0, Total=552 [2018-11-07 20:59:07,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3865 states. [2018-11-07 20:59:07,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3865 to 3390. [2018-11-07 20:59:07,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3390 states. [2018-11-07 20:59:07,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3390 states to 3390 states and 4310 transitions. [2018-11-07 20:59:07,347 INFO L78 Accepts]: Start accepts. Automaton has 3390 states and 4310 transitions. Word has length 396 [2018-11-07 20:59:07,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:59:07,348 INFO L480 AbstractCegarLoop]: Abstraction has 3390 states and 4310 transitions. [2018-11-07 20:59:07,348 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 20:59:07,348 INFO L276 IsEmpty]: Start isEmpty. Operand 3390 states and 4310 transitions. [2018-11-07 20:59:07,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2018-11-07 20:59:07,372 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:59:07,372 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, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:59:07,372 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:59:07,373 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:59:07,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1265958550, now seen corresponding path program 1 times [2018-11-07 20:59:07,373 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:59:07,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:59:07,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:59:07,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:59:07,374 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:59:07,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:59:07,788 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:59:14,513 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 177 proven. 217 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-07 20:59:14,514 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:59:14,514 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:59:14,514 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 509 with the following transitions: [2018-11-07 20:59:14,515 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [591], [593], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:59:14,521 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:59:14,521 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:59:14,924 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:59:14,924 INFO L272 AbstractInterpreter]: Visited 249 different actions 494 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:59:14,929 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:59:14,929 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:59:15,430 INFO L227 lantSequenceWeakener]: Weakened 278 states. On average, predicates are now at 78.24% of their original sizes. [2018-11-07 20:59:15,431 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:59:16,515 INFO L415 sIntCurrentIteration]: We unified 507 AI predicates to 507 [2018-11-07 20:59:16,516 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:59:16,516 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:59:16,516 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-11-07 20:59:16,517 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:59:16,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-07 20:59:16,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-07 20:59:16,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2018-11-07 20:59:16,519 INFO L87 Difference]: Start difference. First operand 3390 states and 4310 transitions. Second operand 19 states. [2018-11-07 20:59:18,356 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:59:50,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:59:50,415 INFO L93 Difference]: Finished difference Result 6132 states and 8357 transitions. [2018-11-07 20:59:50,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-07 20:59:50,415 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 508 [2018-11-07 20:59:50,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:59:50,431 INFO L225 Difference]: With dead ends: 6132 [2018-11-07 20:59:50,432 INFO L226 Difference]: Without dead ends: 4026 [2018-11-07 20:59:50,439 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 523 GetRequests, 438 SyntacticMatches, 52 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 853 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=221, Invalid=969, Unknown=0, NotChecked=0, Total=1190 [2018-11-07 20:59:50,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4026 states. [2018-11-07 20:59:51,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4026 to 4021. [2018-11-07 20:59:51,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4021 states. [2018-11-07 20:59:51,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4021 states to 4021 states and 4975 transitions. [2018-11-07 20:59:51,199 INFO L78 Accepts]: Start accepts. Automaton has 4021 states and 4975 transitions. Word has length 508 [2018-11-07 20:59:51,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:59:51,200 INFO L480 AbstractCegarLoop]: Abstraction has 4021 states and 4975 transitions. [2018-11-07 20:59:51,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-07 20:59:51,201 INFO L276 IsEmpty]: Start isEmpty. Operand 4021 states and 4975 transitions. [2018-11-07 20:59:51,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2018-11-07 20:59:51,211 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:59:51,211 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, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:59:51,212 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:59:51,212 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:59:51,212 INFO L82 PathProgramCache]: Analyzing trace with hash 36782042, now seen corresponding path program 1 times [2018-11-07 20:59:51,212 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:59:51,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:59:51,214 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:59:51,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:59:51,215 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:59:51,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:59:51,650 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:59:51,836 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 177 proven. 217 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-07 20:59:51,836 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:59:51,836 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:59:51,836 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 517 with the following transitions: [2018-11-07 20:59:51,837 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [591], [593], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:59:51,844 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:59:51,844 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:59:54,452 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:59:54,452 INFO L272 AbstractInterpreter]: Visited 257 different actions 2265 times. Merged at 5 different actions 40 times. Widened at 1 different actions 4 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:59:54,460 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:59:54,460 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:59:55,197 INFO L227 lantSequenceWeakener]: Weakened 163 states. On average, predicates are now at 78.84% of their original sizes. [2018-11-07 20:59:55,197 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:59:55,595 INFO L415 sIntCurrentIteration]: We unified 515 AI predicates to 515 [2018-11-07 20:59:55,595 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:59:55,595 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:59:55,595 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [6] total 27 [2018-11-07 20:59:55,595 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:59:55,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-07 20:59:55,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-07 20:59:55,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2018-11-07 20:59:55,597 INFO L87 Difference]: Start difference. First operand 4021 states and 4975 transitions. Second operand 23 states. [2018-11-07 20:59:57,481 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:00:16,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:00:16,819 INFO L93 Difference]: Finished difference Result 6768 states and 9033 transitions. [2018-11-07 21:00:16,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-07 21:00:16,819 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 516 [2018-11-07 21:00:16,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:00:16,832 INFO L225 Difference]: With dead ends: 6768 [2018-11-07 21:00:16,832 INFO L226 Difference]: Without dead ends: 4662 [2018-11-07 21:00:16,840 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 530 GetRequests, 494 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=290, Invalid=1116, Unknown=0, NotChecked=0, Total=1406 [2018-11-07 21:00:16,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4662 states. [2018-11-07 21:00:16,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4662 to 4654. [2018-11-07 21:00:16,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4654 states. [2018-11-07 21:00:16,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4654 states to 4654 states and 5646 transitions. [2018-11-07 21:00:16,953 INFO L78 Accepts]: Start accepts. Automaton has 4654 states and 5646 transitions. Word has length 516 [2018-11-07 21:00:16,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:00:16,954 INFO L480 AbstractCegarLoop]: Abstraction has 4654 states and 5646 transitions. [2018-11-07 21:00:16,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-07 21:00:16,955 INFO L276 IsEmpty]: Start isEmpty. Operand 4654 states and 5646 transitions. [2018-11-07 21:00:16,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2018-11-07 21:00:16,968 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:00:16,969 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, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:00:16,969 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:00:16,969 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:00:16,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1069212052, now seen corresponding path program 1 times [2018-11-07 21:00:16,970 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:00:16,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:00:16,971 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:00:16,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:00:16,971 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:00:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:00:19,271 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 328 proven. 200 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2018-11-07 21:00:19,272 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:00:19,272 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:00:19,272 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 601 with the following transitions: [2018-11-07 21:00:19,273 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [591], [593], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 21:00:19,277 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:00:19,278 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:00:19,345 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:00:20,015 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 21:00:20,015 INFO L272 AbstractInterpreter]: Visited 250 different actions 995 times. Merged at 7 different actions 28 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 21:00:20,025 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:00:20,025 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 21:00:20,464 INFO L227 lantSequenceWeakener]: Weakened 597 states. On average, predicates are now at 77.66% of their original sizes. [2018-11-07 21:00:20,464 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 21:00:20,570 INFO L415 sIntCurrentIteration]: We unified 599 AI predicates to 599 [2018-11-07 21:00:20,571 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 21:00:20,571 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 21:00:20,571 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [13] total 21 [2018-11-07 21:00:20,571 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:00:20,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 21:00:20,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 21:00:20,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-07 21:00:20,572 INFO L87 Difference]: Start difference. First operand 4654 states and 5646 transitions. Second operand 10 states. Received shutdown request... [2018-11-07 21:00:31,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-07 21:00:31,029 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 21:00:31,035 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 21:00:31,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:00:31 BoogieIcfgContainer [2018-11-07 21:00:31,035 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 21:00:31,036 INFO L168 Benchmark]: Toolchain (without parser) took 219637.29 ms. Allocated memory was 1.5 GB in the beginning and 5.3 GB in the end (delta: 3.8 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -731.3 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-11-07 21:00:31,037 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 21:00:31,038 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1150.24 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: 87.2 MB). Peak memory consumption was 87.2 MB. Max. memory is 7.1 GB. [2018-11-07 21:00:31,038 INFO L168 Benchmark]: Boogie Procedure Inliner took 171.86 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 759.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -887.7 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2018-11-07 21:00:31,039 INFO L168 Benchmark]: Boogie Preprocessor took 134.95 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 21:00:31,040 INFO L168 Benchmark]: RCFGBuilder took 5684.07 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 250.7 MB). Peak memory consumption was 250.7 MB. Max. memory is 7.1 GB. [2018-11-07 21:00:31,041 INFO L168 Benchmark]: TraceAbstraction took 212490.47 ms. Allocated memory was 2.3 GB in the beginning and 5.3 GB in the end (delta: 3.0 GB). Free memory was 2.0 GB in the beginning and 2.2 GB in the end (delta: -181.6 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-11-07 21:00:31,045 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1150.24 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: 87.2 MB). Peak memory consumption was 87.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 171.86 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 759.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -887.7 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 134.95 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 5684.07 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 250.7 MB). Peak memory consumption was 250.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 212490.47 ms. Allocated memory was 2.3 GB in the beginning and 5.3 GB in the end (delta: 3.0 GB). Free memory was 2.0 GB in the beginning and 2.2 GB in the end (delta: -181.6 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 178]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 178). Cancelled while BasicCegarLoop was constructing difference of abstraction (4654states) and FLOYD_HOARE automaton (currently 17 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (3809 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 212.4s OverallTime, 8 OverallIterations, 5 TraceHistogramMax, 183.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2426 SDtfs, 20150 SDslu, 1970 SDs, 0 SdLazy, 28251 SolverSat, 4100 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 67.3s Time, PredicateUnifierStatistics: 12 DeclaredPredicates, 2717 GetRequests, 2457 SyntacticMatches, 106 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2070 ImplicationChecksByTransitivity, 6.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4654occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 5.5s AbstIntTime, 6 AbstIntIterations, 6 AbstIntStrong, 0.9977819320527415 AbsIntWeakeningRatio, 0.07267221801665405 AbsIntAvgWeakeningVarsNumRemoved, 13.183573050719152 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 744 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 2869 NumberOfCodeBlocks, 2869 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 2861 ConstructedInterpolants, 0 QuantifiedInterpolants, 6660621 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 1781/2917 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown