java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-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/Problem17_label03_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 02:00:09,569 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 02:00:09,571 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 02:00:09,588 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 02:00:09,589 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 02:00:09,590 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 02:00:09,591 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 02:00:09,593 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 02:00:09,594 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 02:00:09,595 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 02:00:09,596 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 02:00:09,596 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 02:00:09,597 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 02:00:09,598 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 02:00:09,599 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 02:00:09,600 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 02:00:09,601 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 02:00:09,604 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 02:00:09,606 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 02:00:09,610 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 02:00:09,615 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 02:00:09,616 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 02:00:09,618 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 02:00:09,618 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 02:00:09,618 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 02:00:09,619 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 02:00:09,620 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 02:00:09,621 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 02:00:09,622 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 02:00:09,626 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 02:00:09,627 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 02:00:09,627 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 02:00:09,628 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 02:00:09,628 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 02:00:09,629 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 02:00:09,631 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 02:00:09,632 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 02:00:09,656 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 02:00:09,657 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 02:00:09,657 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 02:00:09,658 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 02:00:09,659 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 02:00:09,659 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 02:00:09,659 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 02:00:09,659 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 02:00:09,659 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 02:00:09,660 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 02:00:09,660 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 02:00:09,660 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 02:00:09,661 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 02:00:09,661 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 02:00:09,662 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 02:00:09,662 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 02:00:09,662 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 02:00:09,662 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 02:00:09,662 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 02:00:09,663 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 02:00:09,665 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 02:00:09,665 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 02:00:09,665 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 02:00:09,665 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 02:00:09,665 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 02:00:09,666 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 02:00:09,666 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 02:00:09,666 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 02:00:09,666 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 02:00:09,666 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 02:00:09,667 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 02:00:09,667 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 02:00:09,667 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 02:00:09,667 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 02:00:09,740 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 02:00:09,753 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 02:00:09,757 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 02:00:09,759 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 02:00:09,759 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 02:00:09,760 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label03_true-unreach-call.c [2018-10-24 02:00:09,825 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c7c6ea5fe/ab6a51fe2fc1409f9b9731c9427b83fa/FLAG5e185bc4d [2018-10-24 02:00:10,538 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 02:00:10,539 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label03_true-unreach-call.c [2018-10-24 02:00:10,566 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c7c6ea5fe/ab6a51fe2fc1409f9b9731c9427b83fa/FLAG5e185bc4d [2018-10-24 02:00:10,586 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c7c6ea5fe/ab6a51fe2fc1409f9b9731c9427b83fa [2018-10-24 02:00:10,599 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 02:00:10,601 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 02:00:10,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 02:00:10,602 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 02:00:10,607 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 02:00:10,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:00:10" (1/1) ... [2018-10-24 02:00:10,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10e73541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:00:10, skipping insertion in model container [2018-10-24 02:00:10,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:00:10" (1/1) ... [2018-10-24 02:00:10,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 02:00:10,746 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 02:00:11,599 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 02:00:11,604 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 02:00:12,016 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 02:00:12,040 INFO L193 MainTranslator]: Completed translation [2018-10-24 02:00:12,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:00:12 WrapperNode [2018-10-24 02:00:12,041 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 02:00:12,042 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 02:00:12,042 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 02:00:12,042 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 02:00:12,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:00:12" (1/1) ... [2018-10-24 02:00:12,111 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:00:12" (1/1) ... [2018-10-24 02:00:12,499 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 02:00:12,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 02:00:12,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 02:00:12,500 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 02:00:12,511 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:00:12" (1/1) ... [2018-10-24 02:00:12,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:00:12" (1/1) ... [2018-10-24 02:00:12,535 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:00:12" (1/1) ... [2018-10-24 02:00:12,536 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:00:12" (1/1) ... [2018-10-24 02:00:12,645 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:00:12" (1/1) ... [2018-10-24 02:00:12,691 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:00:12" (1/1) ... [2018-10-24 02:00:12,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:00:12" (1/1) ... [2018-10-24 02:00:12,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 02:00:12,785 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 02:00:12,785 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 02:00:12,785 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 02:00:12,786 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:00:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 02:00:12,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 02:00:12,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 02:00:12,851 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 02:00:12,851 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 02:00:12,852 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 02:00:12,852 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 02:00:12,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 02:00:12,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 02:00:12,852 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 02:00:12,852 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 02:00:26,434 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 02:00:26,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:00:26 BoogieIcfgContainer [2018-10-24 02:00:26,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 02:00:26,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 02:00:26,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 02:00:26,445 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 02:00:26,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:00:10" (1/3) ... [2018-10-24 02:00:26,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47d13e6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:00:26, skipping insertion in model container [2018-10-24 02:00:26,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:00:12" (2/3) ... [2018-10-24 02:00:26,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47d13e6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:00:26, skipping insertion in model container [2018-10-24 02:00:26,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:00:26" (3/3) ... [2018-10-24 02:00:26,450 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label03_true-unreach-call.c [2018-10-24 02:00:26,461 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 02:00:26,474 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 02:00:26,494 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 02:00:26,556 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 02:00:26,556 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 02:00:26,556 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 02:00:26,557 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 02:00:26,557 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 02:00:26,557 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 02:00:26,557 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 02:00:26,557 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 02:00:26,603 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-24 02:00:26,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-24 02:00:26,613 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:00:26,614 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] [2018-10-24 02:00:26,617 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:00:26,623 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:00:26,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1535738860, now seen corresponding path program 1 times [2018-10-24 02:00:26,627 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:00:26,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:00:26,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:00:26,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:00:26,687 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:00:26,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:00:27,169 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-24 02:00:27,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:00:27,189 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:00:27,189 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 02:00:27,189 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:00:27,196 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 02:00:27,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 02:00:27,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 02:00:27,216 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-24 02:00:36,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:00:36,982 INFO L93 Difference]: Finished difference Result 2164 states and 4009 transitions. [2018-10-24 02:00:36,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 02:00:36,984 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2018-10-24 02:00:36,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:00:37,015 INFO L225 Difference]: With dead ends: 2164 [2018-10-24 02:00:37,016 INFO L226 Difference]: Without dead ends: 1554 [2018-10-24 02:00:37,027 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 02:00:37,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2018-10-24 02:00:37,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1052. [2018-10-24 02:00:37,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2018-10-24 02:00:37,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1882 transitions. [2018-10-24 02:00:37,187 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1882 transitions. Word has length 56 [2018-10-24 02:00:37,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:00:37,187 INFO L481 AbstractCegarLoop]: Abstraction has 1052 states and 1882 transitions. [2018-10-24 02:00:37,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 02:00:37,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1882 transitions. [2018-10-24 02:00:37,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-24 02:00:37,202 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:00:37,203 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:00:37,203 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:00:37,203 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:00:37,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1304567782, now seen corresponding path program 1 times [2018-10-24 02:00:37,204 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:00:37,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:00:37,205 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:00:37,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:00:37,205 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:00:37,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:00:37,487 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:00:37,487 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:00:37,487 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 02:00:37,488 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:00:37,490 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 02:00:37,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 02:00:37,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 02:00:37,491 INFO L87 Difference]: Start difference. First operand 1052 states and 1882 transitions. Second operand 5 states. [2018-10-24 02:00:46,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:00:46,105 INFO L93 Difference]: Finished difference Result 3031 states and 5537 transitions. [2018-10-24 02:00:46,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 02:00:46,106 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2018-10-24 02:00:46,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:00:46,122 INFO L225 Difference]: With dead ends: 3031 [2018-10-24 02:00:46,122 INFO L226 Difference]: Without dead ends: 1985 [2018-10-24 02:00:46,127 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 02:00:46,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2018-10-24 02:00:46,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1959. [2018-10-24 02:00:46,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2018-10-24 02:00:46,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3239 transitions. [2018-10-24 02:00:46,211 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3239 transitions. Word has length 128 [2018-10-24 02:00:46,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:00:46,212 INFO L481 AbstractCegarLoop]: Abstraction has 1959 states and 3239 transitions. [2018-10-24 02:00:46,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 02:00:46,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3239 transitions. [2018-10-24 02:00:46,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-24 02:00:46,217 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:00:46,217 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:00:46,217 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:00:46,218 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:00:46,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1286141214, now seen corresponding path program 1 times [2018-10-24 02:00:46,218 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:00:46,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:00:46,219 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:00:46,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:00:46,219 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:00:46,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:00:46,668 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:00:46,669 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 02:00:46,669 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 02:00:46,670 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 132 with the following transitions: [2018-10-24 02:00:46,673 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1058], [1060], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 02:00:46,752 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 02:00:46,752 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 02:00:48,116 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 02:01:07,465 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 02:01:07,467 INFO L272 AbstractInterpreter]: Visited 83 different actions 544 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 02:01:07,480 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:01:07,482 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 02:01:07,482 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 02:01:07,482 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 02:01:07,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:01:07,503 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 02:01:07,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:01:07,583 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 02:01:12,143 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:01:12,143 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 02:01:12,631 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:01:12,662 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-24 02:01:12,663 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 6] total 11 [2018-10-24 02:01:12,663 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:01:12,664 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 02:01:12,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 02:01:12,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=78, Unknown=2, NotChecked=0, Total=110 [2018-10-24 02:01:12,664 INFO L87 Difference]: Start difference. First operand 1959 states and 3239 transitions. Second operand 3 states. [2018-10-24 02:01:18,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:01:18,392 INFO L93 Difference]: Finished difference Result 5689 states and 9646 transitions. [2018-10-24 02:01:18,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 02:01:18,393 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 131 [2018-10-24 02:01:18,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:01:18,417 INFO L225 Difference]: With dead ends: 5689 [2018-10-24 02:01:18,417 INFO L226 Difference]: Without dead ends: 3736 [2018-10-24 02:01:18,430 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 258 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=30, Invalid=78, Unknown=2, NotChecked=0, Total=110 [2018-10-24 02:01:18,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3736 states. [2018-10-24 02:01:18,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3736 to 3733. [2018-10-24 02:01:18,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3733 states. [2018-10-24 02:01:18,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3733 states to 3733 states and 5526 transitions. [2018-10-24 02:01:18,525 INFO L78 Accepts]: Start accepts. Automaton has 3733 states and 5526 transitions. Word has length 131 [2018-10-24 02:01:18,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:01:18,526 INFO L481 AbstractCegarLoop]: Abstraction has 3733 states and 5526 transitions. [2018-10-24 02:01:18,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 02:01:18,526 INFO L276 IsEmpty]: Start isEmpty. Operand 3733 states and 5526 transitions. [2018-10-24 02:01:18,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-24 02:01:18,530 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:01:18,531 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:01:18,531 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:01:18,531 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:01:18,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1968123582, now seen corresponding path program 1 times [2018-10-24 02:01:18,532 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:01:18,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:01:18,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:01:18,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:01:18,533 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:01:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:01:18,885 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:01:18,886 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:01:18,886 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-24 02:01:18,886 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:01:18,887 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 02:01:18,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 02:01:18,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 02:01:18,888 INFO L87 Difference]: Start difference. First operand 3733 states and 5526 transitions. Second operand 7 states. [2018-10-24 02:01:38,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:01:38,637 INFO L93 Difference]: Finished difference Result 12809 states and 21216 transitions. [2018-10-24 02:01:38,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 02:01:38,638 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 158 [2018-10-24 02:01:38,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:01:38,703 INFO L225 Difference]: With dead ends: 12809 [2018-10-24 02:01:38,703 INFO L226 Difference]: Without dead ends: 9082 [2018-10-24 02:01:38,752 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 02:01:38,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9082 states. [2018-10-24 02:01:39,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9082 to 8957. [2018-10-24 02:01:39,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8957 states. [2018-10-24 02:01:39,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8957 states to 8957 states and 13358 transitions. [2018-10-24 02:01:39,045 INFO L78 Accepts]: Start accepts. Automaton has 8957 states and 13358 transitions. Word has length 158 [2018-10-24 02:01:39,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:01:39,046 INFO L481 AbstractCegarLoop]: Abstraction has 8957 states and 13358 transitions. [2018-10-24 02:01:39,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 02:01:39,046 INFO L276 IsEmpty]: Start isEmpty. Operand 8957 states and 13358 transitions. [2018-10-24 02:01:39,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-24 02:01:39,054 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:01:39,054 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:01:39,054 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:01:39,054 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:01:39,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1891195745, now seen corresponding path program 1 times [2018-10-24 02:01:39,059 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:01:39,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:01:39,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:01:39,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:01:39,060 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:01:39,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:01:39,479 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:01:39,479 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:01:39,479 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 02:01:39,480 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:01:39,480 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 02:01:39,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 02:01:39,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 02:01:39,483 INFO L87 Difference]: Start difference. First operand 8957 states and 13358 transitions. Second operand 5 states. [2018-10-24 02:01:57,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:01:57,364 INFO L93 Difference]: Finished difference Result 29419 states and 47572 transitions. [2018-10-24 02:01:57,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 02:01:57,365 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2018-10-24 02:01:57,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:01:57,487 INFO L225 Difference]: With dead ends: 29419 [2018-10-24 02:01:57,487 INFO L226 Difference]: Without dead ends: 20468 [2018-10-24 02:01:57,585 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 02:01:57,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20468 states. [2018-10-24 02:01:58,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20468 to 20171. [2018-10-24 02:01:58,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20171 states. [2018-10-24 02:01:58,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20171 states to 20171 states and 27869 transitions. [2018-10-24 02:01:58,193 INFO L78 Accepts]: Start accepts. Automaton has 20171 states and 27869 transitions. Word has length 170 [2018-10-24 02:01:58,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:01:58,194 INFO L481 AbstractCegarLoop]: Abstraction has 20171 states and 27869 transitions. [2018-10-24 02:01:58,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 02:01:58,194 INFO L276 IsEmpty]: Start isEmpty. Operand 20171 states and 27869 transitions. [2018-10-24 02:01:58,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-10-24 02:01:58,211 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:01:58,211 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 02:01:58,212 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:01:58,212 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:01:58,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1388015723, now seen corresponding path program 1 times [2018-10-24 02:01:58,212 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:01:58,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:01:58,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:01:58,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:01:58,213 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:01:58,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:01:59,028 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 101 proven. 61 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-10-24 02:01:59,028 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 02:01:59,029 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 02:01:59,029 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 239 with the following transitions: [2018-10-24 02:01:59,029 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1058], [1060], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1211], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 02:01:59,036 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 02:01:59,036 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 02:02:00,993 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 02:02:01,186 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 02:02:01,186 INFO L272 AbstractInterpreter]: Visited 115 different actions 115 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 02:02:01,224 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:02:01,224 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 02:02:03,385 INFO L232 lantSequenceWeakener]: Weakened 230 states. On average, predicates are now at 75.72% of their original sizes. [2018-10-24 02:02:03,386 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 02:02:03,990 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 02:02:03,991 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 02:02:03,992 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2018-10-24 02:02:03,992 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:02:03,992 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 02:02:03,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 02:02:03,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 02:02:03,993 INFO L87 Difference]: Start difference. First operand 20171 states and 27869 transitions. Second operand 8 states. Received shutdown request... [2018-10-24 02:03:57,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 02:03:57,692 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 02:03:57,697 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 02:03:57,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:03:57 BoogieIcfgContainer [2018-10-24 02:03:57,698 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 02:03:57,698 INFO L168 Benchmark]: Toolchain (without parser) took 227099.15 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-24 02:03:57,700 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 02:03:57,700 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1439.51 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-24 02:03:57,701 INFO L168 Benchmark]: Boogie Procedure Inliner took 457.08 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 799.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -950.8 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. [2018-10-24 02:03:57,702 INFO L168 Benchmark]: Boogie Preprocessor took 285.02 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 41.1 MB). Peak memory consumption was 41.1 MB. Max. memory is 7.1 GB. [2018-10-24 02:03:57,703 INFO L168 Benchmark]: RCFGBuilder took 13654.14 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 466.8 MB). Peak memory consumption was 466.8 MB. Max. memory is 7.1 GB. [2018-10-24 02:03:57,704 INFO L168 Benchmark]: TraceAbstraction took 211257.94 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 2.8 GB in the end (delta: -1.0 GB). Peak memory consumption was 737.6 MB. Max. memory is 7.1 GB. [2018-10-24 02:03:57,712 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1439.51 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 457.08 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 799.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -950.8 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 285.02 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 41.1 MB). Peak memory consumption was 41.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13654.14 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 466.8 MB). Peak memory consumption was 466.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211257.94 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 2.8 GB in the end (delta: -1.0 GB). Peak memory consumption was 737.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 155]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 155). Cancelled while BasicCegarLoop was constructing difference of abstraction (20171states) and FLOYD_HOARE automaton (currently 8 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (26204 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 211.1s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 175.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2389 SDtfs, 8540 SDslu, 1883 SDs, 0 SdLazy, 17049 SolverSat, 3845 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 139.7s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 544 GetRequests, 501 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 6.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20171occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 23.0s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 0.9959104186952288 AbsIntWeakeningRatio, 0.11392405063291139 AbsIntAvgWeakeningVarsNumRemoved, 1050.1898734177216 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 953 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 7.3s InterpolantComputationTime, 1012 NumberOfCodeBlocks, 1012 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1135 ConstructedInterpolants, 52 QuantifiedInterpolants, 739629 SizeOfPredicates, 3 NumberOfNonLiveVariables, 282 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 309/464 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown