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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label08_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 00:59:28,562 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 00:59:28,564 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 00:59:28,581 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 00:59:28,581 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 00:59:28,582 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 00:59:28,584 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 00:59:28,585 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 00:59:28,587 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 00:59:28,588 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 00:59:28,589 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 00:59:28,589 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 00:59:28,590 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 00:59:28,591 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 00:59:28,592 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 00:59:28,593 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 00:59:28,594 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 00:59:28,596 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 00:59:28,598 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 00:59:28,599 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 00:59:28,600 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 00:59:28,602 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 00:59:28,604 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 00:59:28,604 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 00:59:28,605 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 00:59:28,606 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 00:59:28,607 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 00:59:28,607 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 00:59:28,608 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 00:59:28,609 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 00:59:28,610 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 00:59:28,610 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 00:59:28,610 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 00:59:28,611 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 00:59:28,612 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 00:59:28,612 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 00:59:28,613 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 00:59:28,635 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 00:59:28,635 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 00:59:28,638 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 00:59:28,638 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 00:59:28,638 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 00:59:28,639 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 00:59:28,639 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 00:59:28,639 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 00:59:28,639 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 00:59:28,639 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 00:59:28,640 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 00:59:28,640 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 00:59:28,640 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 00:59:28,642 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 00:59:28,642 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 00:59:28,642 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 00:59:28,642 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 00:59:28,642 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 00:59:28,643 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 00:59:28,644 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 00:59:28,644 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 00:59:28,644 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 00:59:28,645 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 00:59:28,645 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 00:59:28,645 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:59:28,645 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 00:59:28,645 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 00:59:28,645 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 00:59:28,646 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 00:59:28,646 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 00:59:28,646 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 00:59:28,647 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 00:59:28,647 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 00:59:28,647 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 00:59:28,706 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 00:59:28,721 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 00:59:28,725 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 00:59:28,727 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 00:59:28,727 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 00:59:28,728 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label08_true-unreach-call_false-termination.c [2018-11-07 00:59:28,796 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/508a2973b/f1ca50d08b874b2381bf35079b7e70d8/FLAGcc23e79a3 [2018-11-07 00:59:29,426 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 00:59:29,427 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label08_true-unreach-call_false-termination.c [2018-11-07 00:59:29,444 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/508a2973b/f1ca50d08b874b2381bf35079b7e70d8/FLAGcc23e79a3 [2018-11-07 00:59:29,465 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/508a2973b/f1ca50d08b874b2381bf35079b7e70d8 [2018-11-07 00:59:29,477 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 00:59:29,480 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 00:59:29,482 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 00:59:29,482 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 00:59:29,486 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 00:59:29,487 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:59:29" (1/1) ... [2018-11-07 00:59:29,490 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@311ff004 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:29, skipping insertion in model container [2018-11-07 00:59:29,490 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:59:29" (1/1) ... [2018-11-07 00:59:29,501 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 00:59:29,568 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 00:59:30,100 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:59:30,105 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 00:59:30,215 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:59:30,233 INFO L193 MainTranslator]: Completed translation [2018-11-07 00:59:30,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:30 WrapperNode [2018-11-07 00:59:30,234 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 00:59:30,235 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 00:59:30,235 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 00:59:30,236 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 00:59:30,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:30" (1/1) ... [2018-11-07 00:59:30,372 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:30" (1/1) ... [2018-11-07 00:59:30,380 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 00:59:30,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 00:59:30,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 00:59:30,380 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 00:59:30,390 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:30" (1/1) ... [2018-11-07 00:59:30,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:30" (1/1) ... [2018-11-07 00:59:30,395 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:30" (1/1) ... [2018-11-07 00:59:30,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:30" (1/1) ... [2018-11-07 00:59:30,449 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:30" (1/1) ... [2018-11-07 00:59:30,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:30" (1/1) ... [2018-11-07 00:59:30,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:30" (1/1) ... [2018-11-07 00:59:30,488 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 00:59:30,489 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 00:59:30,489 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 00:59:30,489 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 00:59:30,490 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:30" (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 00:59:30,562 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 00:59:30,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 00:59:30,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 00:59:30,563 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 00:59:30,563 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 00:59:30,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 00:59:30,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 00:59:30,564 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 00:59:30,564 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 00:59:33,757 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 00:59:33,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:59:33 BoogieIcfgContainer [2018-11-07 00:59:33,758 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 00:59:33,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 00:59:33,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 00:59:33,763 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 00:59:33,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:59:29" (1/3) ... [2018-11-07 00:59:33,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ad110f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:59:33, skipping insertion in model container [2018-11-07 00:59:33,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:30" (2/3) ... [2018-11-07 00:59:33,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ad110f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:59:33, skipping insertion in model container [2018-11-07 00:59:33,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:59:33" (3/3) ... [2018-11-07 00:59:33,767 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label08_true-unreach-call_false-termination.c [2018-11-07 00:59:33,777 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 00:59:33,788 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 00:59:33,807 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 00:59:33,860 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 00:59:33,861 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 00:59:33,861 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 00:59:33,861 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 00:59:33,861 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 00:59:33,863 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 00:59:33,863 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 00:59:33,863 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 00:59:33,908 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2018-11-07 00:59:33,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-11-07 00:59:33,927 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:59:33,928 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:59:33,932 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:59:33,940 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:59:33,941 INFO L82 PathProgramCache]: Analyzing trace with hash -682702232, now seen corresponding path program 1 times [2018-11-07 00:59:33,944 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:59:34,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:59:34,003 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:59:34,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:59:34,003 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:59:34,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:59:34,617 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:59:34,723 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 00:59:34,725 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:59:34,726 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 00:59:34,726 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:59:34,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 00:59:34,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 00:59:34,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:59:34,752 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 3 states. [2018-11-07 00:59:36,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:59:36,256 INFO L93 Difference]: Finished difference Result 550 states and 941 transitions. [2018-11-07 00:59:36,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 00:59:36,258 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 120 [2018-11-07 00:59:36,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:59:36,282 INFO L225 Difference]: With dead ends: 550 [2018-11-07 00:59:36,282 INFO L226 Difference]: Without dead ends: 340 [2018-11-07 00:59:36,290 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 00:59:36,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-11-07 00:59:36,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-11-07 00:59:36,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-11-07 00:59:36,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 553 transitions. [2018-11-07 00:59:36,391 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 553 transitions. Word has length 120 [2018-11-07 00:59:36,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:59:36,394 INFO L480 AbstractCegarLoop]: Abstraction has 340 states and 553 transitions. [2018-11-07 00:59:36,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 00:59:36,396 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 553 transitions. [2018-11-07 00:59:36,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-11-07 00:59:36,410 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:59:36,410 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 00:59:36,411 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:59:36,412 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:59:36,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1009333063, now seen corresponding path program 1 times [2018-11-07 00:59:36,413 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:59:36,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:59:36,416 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:59:36,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:59:36,416 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:59:36,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:59:36,646 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:59:36,647 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:59:36,647 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:59:36,647 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:59:36,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:59:36,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:59:36,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:59:36,651 INFO L87 Difference]: Start difference. First operand 340 states and 553 transitions. Second operand 6 states. [2018-11-07 00:59:38,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:59:38,878 INFO L93 Difference]: Finished difference Result 1075 states and 1835 transitions. [2018-11-07 00:59:38,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:59:38,881 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-11-07 00:59:38,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:59:38,890 INFO L225 Difference]: With dead ends: 1075 [2018-11-07 00:59:38,891 INFO L226 Difference]: Without dead ends: 741 [2018-11-07 00:59:38,896 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 00:59:38,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2018-11-07 00:59:38,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 724. [2018-11-07 00:59:38,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 724 states. [2018-11-07 00:59:38,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1145 transitions. [2018-11-07 00:59:38,946 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1145 transitions. Word has length 131 [2018-11-07 00:59:38,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:59:38,947 INFO L480 AbstractCegarLoop]: Abstraction has 724 states and 1145 transitions. [2018-11-07 00:59:38,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:59:38,947 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1145 transitions. [2018-11-07 00:59:38,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-11-07 00:59:38,952 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:59:38,952 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 00:59:38,953 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:59:38,953 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:59:38,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1121563035, now seen corresponding path program 1 times [2018-11-07 00:59:38,953 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:59:38,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:59:38,954 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:59:38,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:59:38,955 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:59:38,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:59:39,365 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:59:39,366 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:59:39,366 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 00:59:39,366 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:59:39,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 00:59:39,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 00:59:39,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-07 00:59:39,368 INFO L87 Difference]: Start difference. First operand 724 states and 1145 transitions. Second operand 5 states. [2018-11-07 00:59:41,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:59:41,553 INFO L93 Difference]: Finished difference Result 1578 states and 2533 transitions. [2018-11-07 00:59:41,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 00:59:41,554 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2018-11-07 00:59:41,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:59:41,561 INFO L225 Difference]: With dead ends: 1578 [2018-11-07 00:59:41,561 INFO L226 Difference]: Without dead ends: 721 [2018-11-07 00:59:41,568 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-07 00:59:41,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2018-11-07 00:59:41,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 721. [2018-11-07 00:59:41,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 721 states. [2018-11-07 00:59:41,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1069 transitions. [2018-11-07 00:59:41,618 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1069 transitions. Word has length 132 [2018-11-07 00:59:41,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:59:41,622 INFO L480 AbstractCegarLoop]: Abstraction has 721 states and 1069 transitions. [2018-11-07 00:59:41,622 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 00:59:41,622 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1069 transitions. [2018-11-07 00:59:41,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-11-07 00:59:41,628 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:59:41,628 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 00:59:41,629 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:59:41,629 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:59:41,629 INFO L82 PathProgramCache]: Analyzing trace with hash 915740739, now seen corresponding path program 1 times [2018-11-07 00:59:41,629 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:59:41,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:59:41,631 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:59:41,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:59:41,634 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:59:41,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:59:42,531 WARN L179 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 24 [2018-11-07 00:59:42,665 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:59:42,665 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:59:42,665 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 00:59:42,665 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:59:42,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 00:59:42,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 00:59:42,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-07 00:59:42,667 INFO L87 Difference]: Start difference. First operand 721 states and 1069 transitions. Second operand 5 states. [2018-11-07 00:59:43,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:59:43,837 INFO L93 Difference]: Finished difference Result 1572 states and 2365 transitions. [2018-11-07 00:59:43,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 00:59:43,838 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2018-11-07 00:59:43,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:59:43,842 INFO L225 Difference]: With dead ends: 1572 [2018-11-07 00:59:43,843 INFO L226 Difference]: Without dead ends: 720 [2018-11-07 00:59:43,846 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-07 00:59:43,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2018-11-07 00:59:43,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 720. [2018-11-07 00:59:43,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 720 states. [2018-11-07 00:59:43,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 1062 transitions. [2018-11-07 00:59:43,869 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 1062 transitions. Word has length 133 [2018-11-07 00:59:43,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:59:43,869 INFO L480 AbstractCegarLoop]: Abstraction has 720 states and 1062 transitions. [2018-11-07 00:59:43,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 00:59:43,870 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 1062 transitions. [2018-11-07 00:59:43,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-11-07 00:59:43,873 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:59:43,873 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 00:59:43,873 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:59:43,874 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:59:43,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1024180077, now seen corresponding path program 1 times [2018-11-07 00:59:43,874 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:59:43,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:59:43,875 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:59:43,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:59:43,875 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:59:43,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:59:44,054 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:59:44,054 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:59:44,054 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 00:59:44,055 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:59:44,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 00:59:44,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 00:59:44,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:59:44,056 INFO L87 Difference]: Start difference. First operand 720 states and 1062 transitions. Second operand 3 states. [2018-11-07 00:59:44,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:59:44,968 INFO L93 Difference]: Finished difference Result 1882 states and 2820 transitions. [2018-11-07 00:59:44,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 00:59:44,969 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 136 [2018-11-07 00:59:44,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:59:44,976 INFO L225 Difference]: With dead ends: 1882 [2018-11-07 00:59:44,977 INFO L226 Difference]: Without dead ends: 1168 [2018-11-07 00:59:44,981 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:59:44,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2018-11-07 00:59:45,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1164. [2018-11-07 00:59:45,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1164 states. [2018-11-07 00:59:45,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1164 states to 1164 states and 1592 transitions. [2018-11-07 00:59:45,018 INFO L78 Accepts]: Start accepts. Automaton has 1164 states and 1592 transitions. Word has length 136 [2018-11-07 00:59:45,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:59:45,018 INFO L480 AbstractCegarLoop]: Abstraction has 1164 states and 1592 transitions. [2018-11-07 00:59:45,018 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 00:59:45,019 INFO L276 IsEmpty]: Start isEmpty. Operand 1164 states and 1592 transitions. [2018-11-07 00:59:45,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-11-07 00:59:45,025 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:59:45,025 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:59:45,026 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:59:45,026 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:59:45,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1336149662, now seen corresponding path program 1 times [2018-11-07 00:59:45,026 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:59:45,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:59:45,027 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:59:45,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:59:45,028 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:59:45,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:59:45,516 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-07 00:59:45,703 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:59:45,704 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:59:45,704 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:59:45,705 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 169 with the following transitions: [2018-11-07 00:59:45,708 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [33], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [97], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [561], [569], [577], [585], [593], [597], [599], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-11-07 00:59:45,787 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:59:45,788 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:59:54,789 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:59:54,791 INFO L272 AbstractInterpreter]: Visited 69 different actions 69 times. Never merged. Never widened. Never found a fixpoint. Largest state had 42 variables. [2018-11-07 00:59:54,801 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:59:54,801 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:59:58,192 INFO L227 lantSequenceWeakener]: Weakened 108 states. On average, predicates are now at 79.83% of their original sizes. [2018-11-07 00:59:58,193 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:59:59,603 INFO L415 sIntCurrentIteration]: We unified 167 AI predicates to 167 [2018-11-07 00:59:59,603 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:59:59,604 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:59:59,604 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [6] total 16 [2018-11-07 00:59:59,604 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:59:59,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-07 00:59:59,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-07 00:59:59,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-11-07 00:59:59,606 INFO L87 Difference]: Start difference. First operand 1164 states and 1592 transitions. Second operand 12 states. [2018-11-07 01:00:13,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:00:13,608 INFO L93 Difference]: Finished difference Result 2383 states and 3259 transitions. [2018-11-07 01:00:13,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 01:00:13,608 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 168 [2018-11-07 01:00:13,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:00:13,615 INFO L225 Difference]: With dead ends: 2383 [2018-11-07 01:00:13,616 INFO L226 Difference]: Without dead ends: 1225 [2018-11-07 01:00:13,620 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 173 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=106, Invalid=200, Unknown=0, NotChecked=0, Total=306 [2018-11-07 01:00:13,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2018-11-07 01:00:13,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1225. [2018-11-07 01:00:13,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1225 states. [2018-11-07 01:00:13,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1658 transitions. [2018-11-07 01:00:13,662 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1658 transitions. Word has length 168 [2018-11-07 01:00:13,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:00:13,662 INFO L480 AbstractCegarLoop]: Abstraction has 1225 states and 1658 transitions. [2018-11-07 01:00:13,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-07 01:00:13,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1658 transitions. [2018-11-07 01:00:13,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-11-07 01:00:13,669 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:00:13,669 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:00:13,670 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:00:13,670 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:00:13,671 INFO L82 PathProgramCache]: Analyzing trace with hash 213477505, now seen corresponding path program 1 times [2018-11-07 01:00:13,671 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:00:13,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:00:13,672 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:00:13,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:00:13,673 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:00:13,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:00:13,909 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 60 proven. 15 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-07 01:00:13,910 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 01:00:13,910 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 01:00:13,910 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 178 with the following transitions: [2018-11-07 01:00:13,911 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [10], [14], [18], [22], [26], [30], [33], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [97], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [561], [569], [577], [585], [593], [597], [599], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-11-07 01:00:13,921 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 01:00:13,922 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 01:00:44,517 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 01:00:44,518 INFO L272 AbstractInterpreter]: Visited 125 different actions 192 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 42 variables. [2018-11-07 01:00:44,526 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:00:44,526 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 01:00:53,096 INFO L227 lantSequenceWeakener]: Weakened 141 states. On average, predicates are now at 80.88% of their original sizes. [2018-11-07 01:00:53,096 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 01:01:40,601 INFO L415 sIntCurrentIteration]: We unified 176 AI predicates to 176 [2018-11-07 01:01:40,602 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 01:01:40,602 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 01:01:40,602 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [6] total 27 [2018-11-07 01:01:40,602 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:01:40,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-07 01:01:40,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-07 01:01:40,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2018-11-07 01:01:40,604 INFO L87 Difference]: Start difference. First operand 1225 states and 1658 transitions. Second operand 23 states. Received shutdown request... [2018-11-07 01:03:49,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-07 01:03:49,442 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 01:03:49,450 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 01:03:49,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:03:49 BoogieIcfgContainer [2018-11-07 01:03:49,451 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 01:03:49,452 INFO L168 Benchmark]: Toolchain (without parser) took 259973.00 ms. Allocated memory was 1.5 GB in the beginning and 3.2 GB in the end (delta: 1.7 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 137.9 MB. Max. memory is 7.1 GB. [2018-11-07 01:03:49,454 INFO L168 Benchmark]: CDTParser took 0.20 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 01:03:49,454 INFO L168 Benchmark]: CACSL2BoogieTranslator took 753.11 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-11-07 01:03:49,455 INFO L168 Benchmark]: Boogie Procedure Inliner took 144.72 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 724.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -814.0 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. [2018-11-07 01:03:49,456 INFO L168 Benchmark]: Boogie Preprocessor took 107.98 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 01:03:49,457 INFO L168 Benchmark]: RCFGBuilder took 3270.00 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 104.0 MB). Peak memory consumption was 104.0 MB. Max. memory is 7.1 GB. [2018-11-07 01:03:49,457 INFO L168 Benchmark]: TraceAbstraction took 255691.33 ms. Allocated memory was 2.2 GB in the beginning and 3.2 GB in the end (delta: 947.4 MB). Free memory was 2.1 GB in the beginning and 2.9 GB in the end (delta: -855.9 MB). Peak memory consumption was 91.5 MB. Max. memory is 7.1 GB. [2018-11-07 01:03:49,463 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 753.11 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 144.72 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 724.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -814.0 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 107.98 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3270.00 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 104.0 MB). Peak memory consumption was 104.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 255691.33 ms. Allocated memory was 2.2 GB in the beginning and 3.2 GB in the end (delta: 947.4 MB). Free memory was 2.1 GB in the beginning and 2.9 GB in the end (delta: -855.9 MB). Peak memory consumption was 91.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 515]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 515). Cancelled while BasicCegarLoop was constructing difference of abstraction (1225states) and FLOYD_HOARE automaton (currently 18 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (131 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 208 locations, 1 error locations. TIMEOUT Result, 255.6s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 150.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 742 SDtfs, 2449 SDslu, 654 SDs, 0 SdLazy, 3769 SolverSat, 709 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 60.8s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 397 GetRequests, 318 SyntacticMatches, 15 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 72.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1225occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 39.7s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9946990244579673 AbsIntWeakeningRatio, 0.22157434402332363 AbsIntAvgWeakeningVarsNumRemoved, 1486.4373177842565 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 6 MinimizatonAttempts, 21 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 997 NumberOfCodeBlocks, 997 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 990 ConstructedInterpolants, 0 QuantifiedInterpolants, 840867 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 163/180 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown