java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label29_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 16:36:29,606 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 16:36:29,608 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 16:36:29,621 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 16:36:29,621 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 16:36:29,622 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 16:36:29,623 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 16:36:29,626 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 16:36:29,627 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 16:36:29,628 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 16:36:29,629 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 16:36:29,630 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 16:36:29,631 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 16:36:29,632 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 16:36:29,633 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 16:36:29,638 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 16:36:29,640 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 16:36:29,642 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 16:36:29,644 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 16:36:29,646 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 16:36:29,647 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 16:36:29,648 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 16:36:29,651 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 16:36:29,651 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 16:36:29,651 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 16:36:29,652 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 16:36:29,653 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 16:36:29,657 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 16:36:29,658 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 16:36:29,662 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 16:36:29,662 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 16:36:29,663 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 16:36:29,663 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 16:36:29,663 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 16:36:29,668 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 16:36:29,669 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 16:36:29,670 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 16:36:29,702 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 16:36:29,702 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 16:36:29,703 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 16:36:29,703 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 16:36:29,703 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 16:36:29,704 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 16:36:29,704 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 16:36:29,704 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 16:36:29,704 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 16:36:29,704 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 16:36:29,704 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 16:36:29,705 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 16:36:29,705 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 16:36:29,705 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 16:36:29,706 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 16:36:29,706 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 16:36:29,706 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 16:36:29,706 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 16:36:29,706 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 16:36:29,707 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 16:36:29,707 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 16:36:29,707 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 16:36:29,707 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 16:36:29,707 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 16:36:29,708 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 16:36:29,708 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:36:29,708 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 16:36:29,708 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 16:36:29,708 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 16:36:29,709 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 16:36:29,709 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 16:36:29,709 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 16:36:29,709 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 16:36:29,709 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 16:36:29,709 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 16:36:29,762 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 16:36:29,781 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 16:36:29,784 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 16:36:29,786 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 16:36:29,786 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 16:36:29,787 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label29_false-unreach-call.c [2018-11-12 16:36:29,856 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cc2ab70c/d9ea8ab3fe78415ba554cc9a39f46843/FLAG31bd94699 [2018-11-12 16:36:30,584 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 16:36:30,584 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label29_false-unreach-call.c [2018-11-12 16:36:30,609 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cc2ab70c/d9ea8ab3fe78415ba554cc9a39f46843/FLAG31bd94699 [2018-11-12 16:36:30,629 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cc2ab70c/d9ea8ab3fe78415ba554cc9a39f46843 [2018-11-12 16:36:30,641 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 16:36:30,643 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 16:36:30,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 16:36:30,645 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 16:36:30,649 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 16:36:30,650 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:36:30" (1/1) ... [2018-11-12 16:36:30,653 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c4d922f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:36:30, skipping insertion in model container [2018-11-12 16:36:30,654 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:36:30" (1/1) ... [2018-11-12 16:36:30,665 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 16:36:30,748 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 16:36:31,634 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:36:31,639 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 16:36:31,924 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:36:31,947 INFO L193 MainTranslator]: Completed translation [2018-11-12 16:36:31,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:36:31 WrapperNode [2018-11-12 16:36:31,948 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 16:36:31,949 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 16:36:31,949 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 16:36:31,950 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 16:36:32,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:36:31" (1/1) ... [2018-11-12 16:36:32,157 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:36:31" (1/1) ... [2018-11-12 16:36:32,171 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 16:36:32,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 16:36:32,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 16:36:32,172 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 16:36:32,183 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:36:31" (1/1) ... [2018-11-12 16:36:32,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:36:31" (1/1) ... [2018-11-12 16:36:32,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:36:31" (1/1) ... [2018-11-12 16:36:32,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:36:31" (1/1) ... [2018-11-12 16:36:32,266 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:36:31" (1/1) ... [2018-11-12 16:36:32,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:36:31" (1/1) ... [2018-11-12 16:36:32,334 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:36:31" (1/1) ... [2018-11-12 16:36:32,357 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 16:36:32,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 16:36:32,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 16:36:32,358 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 16:36:32,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:36:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:36:32,428 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 16:36:32,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 16:36:32,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 16:36:32,429 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 16:36:32,429 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 16:36:32,429 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 16:36:32,429 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 16:36:32,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 16:36:32,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 16:36:32,430 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 16:36:32,430 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 16:36:38,670 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 16:36:38,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:36:38 BoogieIcfgContainer [2018-11-12 16:36:38,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 16:36:38,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 16:36:38,673 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 16:36:38,676 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 16:36:38,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:36:30" (1/3) ... [2018-11-12 16:36:38,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a79c761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:36:38, skipping insertion in model container [2018-11-12 16:36:38,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:36:31" (2/3) ... [2018-11-12 16:36:38,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a79c761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:36:38, skipping insertion in model container [2018-11-12 16:36:38,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:36:38" (3/3) ... [2018-11-12 16:36:38,680 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label29_false-unreach-call.c [2018-11-12 16:36:38,691 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 16:36:38,700 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 16:36:38,718 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 16:36:38,760 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 16:36:38,760 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 16:36:38,760 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 16:36:38,760 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 16:36:38,760 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 16:36:38,761 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 16:36:38,761 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 16:36:38,761 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 16:36:38,807 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-12 16:36:38,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-12 16:36:38,814 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:36:38,815 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] [2018-11-12 16:36:38,817 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:36:38,822 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:36:38,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1800522660, now seen corresponding path program 1 times [2018-11-12 16:36:38,825 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:36:38,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:36:38,875 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:36:38,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:36:38,876 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:36:38,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:36:39,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:36:39,224 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:36:39,224 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 16:36:39,225 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:36:39,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:36:39,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:36:39,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:36:39,245 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 3 states. [2018-11-12 16:36:43,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:36:43,190 INFO L93 Difference]: Finished difference Result 1194 states and 2152 transitions. [2018-11-12 16:36:43,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:36:43,193 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2018-11-12 16:36:43,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:36:43,220 INFO L225 Difference]: With dead ends: 1194 [2018-11-12 16:36:43,220 INFO L226 Difference]: Without dead ends: 754 [2018-11-12 16:36:43,232 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:36:43,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2018-11-12 16:36:43,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 752. [2018-11-12 16:36:43,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 752 states. [2018-11-12 16:36:43,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1325 transitions. [2018-11-12 16:36:43,348 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1325 transitions. Word has length 28 [2018-11-12 16:36:43,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:36:43,348 INFO L480 AbstractCegarLoop]: Abstraction has 752 states and 1325 transitions. [2018-11-12 16:36:43,349 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:36:43,349 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1325 transitions. [2018-11-12 16:36:43,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-11-12 16:36:43,355 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:36:43,356 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:36:43,356 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:36:43,356 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:36:43,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1795100031, now seen corresponding path program 1 times [2018-11-12 16:36:43,357 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:36:43,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:36:43,358 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:36:43,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:36:43,359 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:36:43,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:36:43,685 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:36:43,686 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:36:43,686 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:36:43,686 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:36:43,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:36:43,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:36:43,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:36:43,689 INFO L87 Difference]: Start difference. First operand 752 states and 1325 transitions. Second operand 6 states. [2018-11-12 16:36:52,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:36:52,449 INFO L93 Difference]: Finished difference Result 2839 states and 5160 transitions. [2018-11-12 16:36:52,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 16:36:52,450 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2018-11-12 16:36:52,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:36:52,471 INFO L225 Difference]: With dead ends: 2839 [2018-11-12 16:36:52,471 INFO L226 Difference]: Without dead ends: 2093 [2018-11-12 16:36:52,480 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 16:36:52,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2093 states. [2018-11-12 16:36:52,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2093 to 2054. [2018-11-12 16:36:52,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2054 states. [2018-11-12 16:36:52,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 3400 transitions. [2018-11-12 16:36:52,571 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 3400 transitions. Word has length 102 [2018-11-12 16:36:52,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:36:52,571 INFO L480 AbstractCegarLoop]: Abstraction has 2054 states and 3400 transitions. [2018-11-12 16:36:52,572 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:36:52,572 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 3400 transitions. [2018-11-12 16:36:52,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-11-12 16:36:52,576 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:36:52,577 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:36:52,577 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:36:52,577 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:36:52,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1736818506, now seen corresponding path program 1 times [2018-11-12 16:36:52,578 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:36:52,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:36:52,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:36:52,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:36:52,579 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:36:52,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:36:52,711 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:36:52,711 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:36:52,712 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 16:36:52,712 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:36:52,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 16:36:52,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 16:36:52,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 16:36:52,713 INFO L87 Difference]: Start difference. First operand 2054 states and 3400 transitions. Second operand 5 states. [2018-11-12 16:36:57,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:36:57,209 INFO L93 Difference]: Finished difference Result 6124 states and 10298 transitions. [2018-11-12 16:36:57,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 16:36:57,211 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2018-11-12 16:36:57,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:36:57,246 INFO L225 Difference]: With dead ends: 6124 [2018-11-12 16:36:57,247 INFO L226 Difference]: Without dead ends: 4076 [2018-11-12 16:36:57,257 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 16:36:57,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4076 states. [2018-11-12 16:36:57,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4076 to 3990. [2018-11-12 16:36:57,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3990 states. [2018-11-12 16:36:57,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3990 states to 3990 states and 5864 transitions. [2018-11-12 16:36:57,391 INFO L78 Accepts]: Start accepts. Automaton has 3990 states and 5864 transitions. Word has length 105 [2018-11-12 16:36:57,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:36:57,391 INFO L480 AbstractCegarLoop]: Abstraction has 3990 states and 5864 transitions. [2018-11-12 16:36:57,391 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 16:36:57,392 INFO L276 IsEmpty]: Start isEmpty. Operand 3990 states and 5864 transitions. [2018-11-12 16:36:57,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-11-12 16:36:57,395 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:36:57,395 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:36:57,395 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:36:57,395 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:36:57,396 INFO L82 PathProgramCache]: Analyzing trace with hash 895222520, now seen corresponding path program 1 times [2018-11-12 16:36:57,396 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:36:57,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:36:57,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:36:57,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:36:57,397 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:36:57,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:36:57,617 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:36:57,617 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:36:57,617 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:36:57,617 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:36:57,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:36:57,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:36:57,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:36:57,619 INFO L87 Difference]: Start difference. First operand 3990 states and 5864 transitions. Second operand 6 states. [2018-11-12 16:37:02,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:37:02,306 INFO L93 Difference]: Finished difference Result 11063 states and 16911 transitions. [2018-11-12 16:37:02,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:37:02,310 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2018-11-12 16:37:02,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:37:02,353 INFO L225 Difference]: With dead ends: 11063 [2018-11-12 16:37:02,353 INFO L226 Difference]: Without dead ends: 7079 [2018-11-12 16:37:02,387 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 [2018-11-12 16:37:02,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7079 states. [2018-11-12 16:37:02,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7079 to 6978. [2018-11-12 16:37:02,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6978 states. [2018-11-12 16:37:02,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6978 states to 6978 states and 9524 transitions. [2018-11-12 16:37:02,575 INFO L78 Accepts]: Start accepts. Automaton has 6978 states and 9524 transitions. Word has length 115 [2018-11-12 16:37:02,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:37:02,575 INFO L480 AbstractCegarLoop]: Abstraction has 6978 states and 9524 transitions. [2018-11-12 16:37:02,575 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:37:02,576 INFO L276 IsEmpty]: Start isEmpty. Operand 6978 states and 9524 transitions. [2018-11-12 16:37:02,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-11-12 16:37:02,579 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:37:02,579 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:37:02,581 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:37:02,581 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:37:02,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1383361339, now seen corresponding path program 1 times [2018-11-12 16:37:02,581 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:37:02,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:37:02,582 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:37:02,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:37:02,583 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:37:02,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:37:02,854 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:37:02,854 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:37:02,854 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 16:37:02,855 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:37:02,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 16:37:02,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 16:37:02,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 16:37:02,856 INFO L87 Difference]: Start difference. First operand 6978 states and 9524 transitions. Second operand 5 states. [2018-11-12 16:37:10,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:37:10,369 INFO L93 Difference]: Finished difference Result 18662 states and 26359 transitions. [2018-11-12 16:37:10,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 16:37:10,371 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2018-11-12 16:37:10,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:37:10,426 INFO L225 Difference]: With dead ends: 18662 [2018-11-12 16:37:10,426 INFO L226 Difference]: Without dead ends: 11690 [2018-11-12 16:37:10,462 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 16:37:10,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11690 states. [2018-11-12 16:37:10,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11690 to 11544. [2018-11-12 16:37:10,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11544 states. [2018-11-12 16:37:10,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11544 states to 11544 states and 15554 transitions. [2018-11-12 16:37:10,753 INFO L78 Accepts]: Start accepts. Automaton has 11544 states and 15554 transitions. Word has length 125 [2018-11-12 16:37:10,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:37:10,754 INFO L480 AbstractCegarLoop]: Abstraction has 11544 states and 15554 transitions. [2018-11-12 16:37:10,754 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 16:37:10,754 INFO L276 IsEmpty]: Start isEmpty. Operand 11544 states and 15554 transitions. [2018-11-12 16:37:10,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-11-12 16:37:10,757 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:37:10,757 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:37:10,757 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:37:10,758 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:37:10,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1389612834, now seen corresponding path program 1 times [2018-11-12 16:37:10,758 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:37:10,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:37:10,759 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:37:10,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:37:10,759 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:37:10,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:37:11,529 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:37:11,529 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:37:11,529 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:37:11,530 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 141 with the following transitions: [2018-11-12 16:37:11,533 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [197], [199], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 16:37:11,601 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:37:11,601 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:37:12,280 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:37:12,290 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Performed 1145 root evaluator evaluations with a maximum evaluation depth of 4. Performed 1145 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Never found a fixpoint. Largest state had 24 variables. [2018-11-12 16:37:12,323 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:37:12,324 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:37:12,770 INFO L227 lantSequenceWeakener]: Weakened 134 states. On average, predicates are now at 77.54% of their original sizes. [2018-11-12 16:37:12,771 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:37:13,273 INFO L415 sIntCurrentIteration]: We unified 139 AI predicates to 139 [2018-11-12 16:37:13,273 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:37:13,274 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:37:13,275 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2018-11-12 16:37:13,275 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:37:13,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-12 16:37:13,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-12 16:37:13,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-12 16:37:13,276 INFO L87 Difference]: Start difference. First operand 11544 states and 15554 transitions. Second operand 8 states. [2018-11-12 16:37:16,404 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:37:48,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:37:48,220 INFO L93 Difference]: Finished difference Result 23075 states and 31099 transitions. [2018-11-12 16:37:48,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 16:37:48,220 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 140 [2018-11-12 16:37:48,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:37:48,267 INFO L225 Difference]: With dead ends: 23075 [2018-11-12 16:37:48,268 INFO L226 Difference]: Without dead ends: 11537 [2018-11-12 16:37:48,310 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 141 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-12 16:37:48,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11537 states. [2018-11-12 16:37:48,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11537 to 11535. [2018-11-12 16:37:48,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11535 states. [2018-11-12 16:37:48,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11535 states to 11535 states and 15513 transitions. [2018-11-12 16:37:48,615 INFO L78 Accepts]: Start accepts. Automaton has 11535 states and 15513 transitions. Word has length 140 [2018-11-12 16:37:48,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:37:48,615 INFO L480 AbstractCegarLoop]: Abstraction has 11535 states and 15513 transitions. [2018-11-12 16:37:48,615 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-12 16:37:48,616 INFO L276 IsEmpty]: Start isEmpty. Operand 11535 states and 15513 transitions. [2018-11-12 16:37:48,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-11-12 16:37:48,621 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:37:48,621 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 16:37:48,622 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:37:48,622 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:37:48,622 INFO L82 PathProgramCache]: Analyzing trace with hash -83318393, now seen corresponding path program 1 times [2018-11-12 16:37:48,622 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:37:48,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:37:48,623 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:37:48,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:37:48,624 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:37:48,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:37:49,735 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-11-12 16:37:50,154 WARN L179 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-11-12 16:37:51,088 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 136 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:37:51,088 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:37:51,088 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:37:51,088 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 237 with the following transitions: [2018-11-12 16:37:51,089 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [197], [199], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 16:37:51,095 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:37:51,095 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:37:51,194 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:37:52,232 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:37:52,232 INFO L272 AbstractInterpreter]: Visited 120 different actions 804 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Performed 14277 root evaluator evaluations with a maximum evaluation depth of 6. Performed 14277 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:37:52,271 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:37:52,272 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:37:52,986 INFO L227 lantSequenceWeakener]: Weakened 70 states. On average, predicates are now at 78.25% of their original sizes. [2018-11-12 16:37:52,987 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:37:56,478 INFO L415 sIntCurrentIteration]: We unified 235 AI predicates to 235 [2018-11-12 16:37:56,478 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:37:56,479 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:37:56,479 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2018-11-12 16:37:56,479 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:37:56,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-12 16:37:56,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-12 16:37:56,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2018-11-12 16:37:56,481 INFO L87 Difference]: Start difference. First operand 11535 states and 15513 transitions. Second operand 16 states. [2018-11-12 16:38:28,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:38:28,467 INFO L93 Difference]: Finished difference Result 24472 states and 32636 transitions. [2018-11-12 16:38:28,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-12 16:38:28,467 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 236 [2018-11-12 16:38:28,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:38:28,525 INFO L225 Difference]: With dead ends: 24472 [2018-11-12 16:38:28,525 INFO L226 Difference]: Without dead ends: 13251 [2018-11-12 16:38:28,572 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 245 GetRequests, 113 SyntacticMatches, 108 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1015 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2018-11-12 16:38:28,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13251 states. [2018-11-12 16:38:28,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13251 to 12997. [2018-11-12 16:38:28,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12997 states. [2018-11-12 16:38:28,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12997 states to 12997 states and 17020 transitions. [2018-11-12 16:38:28,947 INFO L78 Accepts]: Start accepts. Automaton has 12997 states and 17020 transitions. Word has length 236 [2018-11-12 16:38:28,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:38:28,947 INFO L480 AbstractCegarLoop]: Abstraction has 12997 states and 17020 transitions. [2018-11-12 16:38:28,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-12 16:38:28,948 INFO L276 IsEmpty]: Start isEmpty. Operand 12997 states and 17020 transitions. [2018-11-12 16:38:28,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-11-12 16:38:28,962 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:38:28,962 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:38:28,963 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:38:28,963 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:38:28,963 INFO L82 PathProgramCache]: Analyzing trace with hash 783971373, now seen corresponding path program 1 times [2018-11-12 16:38:28,963 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:38:28,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:38:28,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:38:28,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:38:28,965 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:38:29,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:38:29,688 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:38:29,688 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:38:29,688 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:38:29,689 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 401 with the following transitions: [2018-11-12 16:38:29,690 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [197], [199], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [695], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 16:38:29,699 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:38:29,699 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:38:29,931 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:38:30,277 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:38:30,277 INFO L272 AbstractInterpreter]: Visited 283 different actions 560 times. Merged at 5 different actions 5 times. Never widened. Performed 8001 root evaluator evaluations with a maximum evaluation depth of 6. Performed 8001 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:38:30,306 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:38:30,306 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:38:31,003 INFO L227 lantSequenceWeakener]: Weakened 64 states. On average, predicates are now at 78.83% of their original sizes. [2018-11-12 16:38:31,003 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:38:32,004 INFO L415 sIntCurrentIteration]: We unified 399 AI predicates to 399 [2018-11-12 16:38:32,004 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:38:32,004 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:38:32,005 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [6] total 25 [2018-11-12 16:38:32,005 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:38:32,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-12 16:38:32,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-12 16:38:32,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2018-11-12 16:38:32,007 INFO L87 Difference]: Start difference. First operand 12997 states and 17020 transitions. Second operand 21 states. [2018-11-12 16:39:29,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:39:29,992 INFO L93 Difference]: Finished difference Result 25140 states and 33442 transitions. [2018-11-12 16:39:29,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-11-12 16:39:29,992 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 400 [2018-11-12 16:39:29,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:39:30,037 INFO L225 Difference]: With dead ends: 25140 [2018-11-12 16:39:30,037 INFO L226 Difference]: Without dead ends: 13919 [2018-11-12 16:39:30,061 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 417 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=279, Invalid=1203, Unknown=0, NotChecked=0, Total=1482 [2018-11-12 16:39:30,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13919 states. [2018-11-12 16:39:30,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13919 to 13912. [2018-11-12 16:39:30,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13912 states. [2018-11-12 16:39:30,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13912 states to 13912 states and 18013 transitions. [2018-11-12 16:39:30,329 INFO L78 Accepts]: Start accepts. Automaton has 13912 states and 18013 transitions. Word has length 400 [2018-11-12 16:39:30,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:39:30,330 INFO L480 AbstractCegarLoop]: Abstraction has 13912 states and 18013 transitions. [2018-11-12 16:39:30,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-12 16:39:30,330 INFO L276 IsEmpty]: Start isEmpty. Operand 13912 states and 18013 transitions. [2018-11-12 16:39:30,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2018-11-12 16:39:30,342 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:39:30,342 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:39:30,343 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:39:30,343 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:39:30,343 INFO L82 PathProgramCache]: Analyzing trace with hash -956766804, now seen corresponding path program 1 times [2018-11-12 16:39:30,343 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:39:30,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:39:30,344 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:39:30,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:39:30,345 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:39:30,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:39:31,695 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 24 proven. 124 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-12 16:39:31,695 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:39:31,695 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:39:31,697 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 416 with the following transitions: [2018-11-12 16:39:31,698 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [197], [199], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 16:39:31,706 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:39:31,706 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:39:31,920 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:39:33,549 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:39:33,549 INFO L272 AbstractInterpreter]: Visited 284 different actions 1122 times. Merged at 7 different actions 21 times. Never widened. Performed 18264 root evaluator evaluations with a maximum evaluation depth of 6. Performed 18264 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 4 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-12 16:39:33,555 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:39:33,556 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:39:33,556 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:39:33,556 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:39:33,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:39:33,569 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:39:33,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:39:33,722 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:39:48,819 WARN L179 SmtUtils]: Spent 14.69 s on a formula simplification. DAG size of input: 116 DAG size of output: 50 [2018-11-12 16:39:49,117 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 130 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:39:49,117 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:39:49,384 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2018-11-12 16:39:49,743 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 130 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:39:49,775 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:39:49,776 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 15 [2018-11-12 16:39:49,776 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:39:49,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-12 16:39:49,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-12 16:39:49,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2018-11-12 16:39:49,778 INFO L87 Difference]: Start difference. First operand 13912 states and 18013 transitions. Second operand 12 states. [2018-11-12 16:39:52,735 WARN L179 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 25 [2018-11-12 16:40:00,981 WARN L179 SmtUtils]: Spent 5.86 s on a formula simplification that was a NOOP. DAG size: 59 [2018-11-12 16:40:06,969 WARN L179 SmtUtils]: Spent 5.83 s on a formula simplification that was a NOOP. DAG size: 59 Received shutdown request... [2018-11-12 16:40:07,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-12 16:40:07,217 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 16:40:07,223 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 16:40:07,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 04:40:07 BoogieIcfgContainer [2018-11-12 16:40:07,224 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 16:40:07,225 INFO L168 Benchmark]: Toolchain (without parser) took 216582.57 ms. Allocated memory was 1.5 GB in the beginning and 4.3 GB in the end (delta: 2.8 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -81.7 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-11-12 16:40:07,226 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. [2018-11-12 16:40:07,226 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1303.60 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: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2018-11-12 16:40:07,227 INFO L168 Benchmark]: Boogie Procedure Inliner took 222.45 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 716.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -859.1 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. [2018-11-12 16:40:07,228 INFO L168 Benchmark]: Boogie Preprocessor took 185.62 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: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2018-11-12 16:40:07,229 INFO L168 Benchmark]: RCFGBuilder took 6313.76 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 280.4 MB). Peak memory consumption was 280.4 MB. Max. memory is 7.1 GB. [2018-11-12 16:40:07,229 INFO L168 Benchmark]: TraceAbstraction took 208551.39 ms. Allocated memory was 2.2 GB in the beginning and 4.3 GB in the end (delta: 2.0 GB). Free memory was 1.9 GB in the beginning and 1.5 GB in the end (delta: 376.9 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-11-12 16:40:07,234 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 1303.60 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: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 222.45 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 716.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -859.1 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 185.62 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: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6313.76 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 280.4 MB). Peak memory consumption was 280.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208551.39 ms. Allocated memory was 2.2 GB in the beginning and 4.3 GB in the end (delta: 2.0 GB). Free memory was 1.9 GB in the beginning and 1.5 GB in the end (delta: 376.9 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 70). Cancelled while BasicCegarLoop was constructing difference of abstraction (13912states) and FLOYD_HOARE automaton (currently 24 states, 12 states before enhancement),while ReachableStatesComputation was computing reachable states (5002 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 208.4s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 172.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2299 SDtfs, 17443 SDslu, 3107 SDs, 0 SdLazy, 28116 SolverSat, 3198 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 77.4s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 1713 GetRequests, 1473 SyntacticMatches, 113 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1559 ImplicationChecksByTransitivity, 34.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13912occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 4.4s AbstIntTime, 4 AbstIntIterations, 3 AbstIntStrong, 0.9975695717826442 AbsIntWeakeningRatio, 0.09314359637774904 AbsIntAvgWeakeningVarsNumRemoved, 13.963777490297542 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 8 MinimizatonAttempts, 637 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 20.7s InterpolantComputationTime, 2081 NumberOfCodeBlocks, 2081 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 2485 ConstructedInterpolants, 24 QuantifiedInterpolants, 3163324 SizeOfPredicates, 3 NumberOfNonLiveVariables, 596 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 647/844 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown