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/Problem10_label21_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 20:58:09,534 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 20:58:09,536 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 20:58:09,549 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 20:58:09,549 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 20:58:09,550 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 20:58:09,551 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 20:58:09,553 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 20:58:09,557 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 20:58:09,558 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 20:58:09,563 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 20:58:09,564 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 20:58:09,565 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 20:58:09,566 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 20:58:09,567 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 20:58:09,568 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 20:58:09,573 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 20:58:09,576 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 20:58:09,581 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 20:58:09,583 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 20:58:09,584 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 20:58:09,585 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 20:58:09,587 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 20:58:09,587 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 20:58:09,588 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 20:58:09,588 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 20:58:09,589 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 20:58:09,590 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 20:58:09,591 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 20:58:09,592 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 20:58:09,592 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 20:58:09,593 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 20:58:09,593 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 20:58:09,593 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 20:58:09,594 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 20:58:09,595 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 20:58:09,595 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 20:58:09,628 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 20:58:09,633 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 20:58:09,634 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 20:58:09,634 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 20:58:09,635 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 20:58:09,635 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 20:58:09,635 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 20:58:09,635 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 20:58:09,635 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 20:58:09,636 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 20:58:09,638 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 20:58:09,638 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 20:58:09,639 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 20:58:09,639 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 20:58:09,639 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 20:58:09,640 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 20:58:09,640 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 20:58:09,640 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 20:58:09,640 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 20:58:09,640 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 20:58:09,641 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 20:58:09,644 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 20:58:09,644 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 20:58:09,644 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 20:58:09,644 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 20:58:09,645 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 20:58:09,645 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 20:58:09,645 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 20:58:09,645 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 20:58:09,645 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 20:58:09,646 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 20:58:09,646 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 20:58:09,646 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 20:58:09,647 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 20:58:09,718 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 20:58:09,731 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 20:58:09,735 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 20:58:09,737 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 20:58:09,737 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 20:58:09,738 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label21_true-unreach-call.c [2018-10-24 20:58:09,801 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/895841a08/0b05648e55d94661aeaec463487407e0/FLAG43a8ceeac [2018-10-24 20:58:10,384 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 20:58:10,385 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label21_true-unreach-call.c [2018-10-24 20:58:10,415 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/895841a08/0b05648e55d94661aeaec463487407e0/FLAG43a8ceeac [2018-10-24 20:58:10,438 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/895841a08/0b05648e55d94661aeaec463487407e0 [2018-10-24 20:58:10,450 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 20:58:10,452 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 20:58:10,453 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 20:58:10,453 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 20:58:10,458 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 20:58:10,459 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 08:58:10" (1/1) ... [2018-10-24 20:58:10,462 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7abe7212 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:58:10, skipping insertion in model container [2018-10-24 20:58:10,462 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 08:58:10" (1/1) ... [2018-10-24 20:58:10,474 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 20:58:10,559 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 20:58:11,075 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 20:58:11,080 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 20:58:11,213 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 20:58:11,240 INFO L193 MainTranslator]: Completed translation [2018-10-24 20:58:11,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:58:11 WrapperNode [2018-10-24 20:58:11,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 20:58:11,243 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 20:58:11,243 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 20:58:11,243 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 20:58:11,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:58:11" (1/1) ... [2018-10-24 20:58:11,275 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:58:11" (1/1) ... [2018-10-24 20:58:11,483 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 20:58:11,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 20:58:11,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 20:58:11,484 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 20:58:11,497 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:58:11" (1/1) ... [2018-10-24 20:58:11,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:58:11" (1/1) ... [2018-10-24 20:58:11,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:58:11" (1/1) ... [2018-10-24 20:58:11,518 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:58:11" (1/1) ... [2018-10-24 20:58:11,549 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:58:11" (1/1) ... [2018-10-24 20:58:11,564 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:58:11" (1/1) ... [2018-10-24 20:58:11,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:58:11" (1/1) ... [2018-10-24 20:58:11,586 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 20:58:11,587 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 20:58:11,587 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 20:58:11,588 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 20:58:11,589 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:58:11" (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 20:58:11,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 20:58:11,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 20:58:11,657 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 20:58:11,657 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 20:58:11,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 20:58:11,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 20:58:11,658 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 20:58:11,658 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 20:58:14,755 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 20:58:14,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 08:58:14 BoogieIcfgContainer [2018-10-24 20:58:14,756 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 20:58:14,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 20:58:14,761 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 20:58:14,765 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 20:58:14,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 08:58:10" (1/3) ... [2018-10-24 20:58:14,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19cf145a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 08:58:14, skipping insertion in model container [2018-10-24 20:58:14,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:58:11" (2/3) ... [2018-10-24 20:58:14,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19cf145a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 08:58:14, skipping insertion in model container [2018-10-24 20:58:14,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 08:58:14" (3/3) ... [2018-10-24 20:58:14,771 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label21_true-unreach-call.c [2018-10-24 20:58:14,781 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 20:58:14,791 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 20:58:14,810 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 20:58:14,851 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 20:58:14,851 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 20:58:14,851 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 20:58:14,851 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 20:58:14,852 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 20:58:14,852 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 20:58:14,852 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 20:58:14,852 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 20:58:14,886 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-24 20:58:14,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-24 20:58:14,898 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 20:58:14,899 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] [2018-10-24 20:58:14,901 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 20:58:14,907 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 20:58:14,907 INFO L82 PathProgramCache]: Analyzing trace with hash 763875860, now seen corresponding path program 1 times [2018-10-24 20:58:14,909 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 20:58:14,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:58:14,965 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 20:58:14,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:58:14,966 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 20:58:15,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 20:58:15,318 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 20:58:15,341 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 20:58:15,343 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 20:58:15,343 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 20:58:15,344 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 20:58:15,349 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 20:58:15,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 20:58:15,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 20:58:15,365 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-10-24 20:58:17,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 20:58:17,282 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-10-24 20:58:17,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 20:58:17,285 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2018-10-24 20:58:17,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 20:58:17,304 INFO L225 Difference]: With dead ends: 574 [2018-10-24 20:58:17,305 INFO L226 Difference]: Without dead ends: 356 [2018-10-24 20:58:17,316 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 20:58:17,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-10-24 20:58:17,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-10-24 20:58:17,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-10-24 20:58:17,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 609 transitions. [2018-10-24 20:58:17,413 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 609 transitions. Word has length 34 [2018-10-24 20:58:17,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 20:58:17,414 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 609 transitions. [2018-10-24 20:58:17,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 20:58:17,414 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 609 transitions. [2018-10-24 20:58:17,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-24 20:58:17,428 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 20:58:17,428 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:58:17,429 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 20:58:17,429 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 20:58:17,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1148608533, now seen corresponding path program 1 times [2018-10-24 20:58:17,429 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 20:58:17,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:58:17,432 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 20:58:17,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:58:17,432 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 20:58:17,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 20:58:17,778 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 20:58:17,779 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 20:58:17,779 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 20:58:17,779 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 20:58:17,781 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 20:58:17,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 20:58:17,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 20:58:17,782 INFO L87 Difference]: Start difference. First operand 356 states and 609 transitions. Second operand 5 states. [2018-10-24 20:58:20,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 20:58:20,877 INFO L93 Difference]: Finished difference Result 1289 states and 2315 transitions. [2018-10-24 20:58:20,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 20:58:20,878 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2018-10-24 20:58:20,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 20:58:20,887 INFO L225 Difference]: With dead ends: 1289 [2018-10-24 20:58:20,887 INFO L226 Difference]: Without dead ends: 939 [2018-10-24 20:58:20,895 INFO L605 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 [2018-10-24 20:58:20,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2018-10-24 20:58:20,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 926. [2018-10-24 20:58:20,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2018-10-24 20:58:20,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1444 transitions. [2018-10-24 20:58:20,959 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1444 transitions. Word has length 117 [2018-10-24 20:58:20,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 20:58:20,959 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1444 transitions. [2018-10-24 20:58:20,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 20:58:20,960 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1444 transitions. [2018-10-24 20:58:20,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-24 20:58:20,965 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 20:58:20,965 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:58:20,966 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 20:58:20,966 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 20:58:20,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1243271371, now seen corresponding path program 1 times [2018-10-24 20:58:20,967 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 20:58:20,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:58:20,968 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 20:58:20,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:58:20,968 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 20:58:21,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 20:58:21,351 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 20:58:21,785 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 20:58:21,785 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 20:58:21,785 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 20:58:21,786 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 20:58:21,787 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 20:58:21,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 20:58:21,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 20:58:21,788 INFO L87 Difference]: Start difference. First operand 926 states and 1444 transitions. Second operand 6 states. [2018-10-24 20:58:26,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 20:58:26,065 INFO L93 Difference]: Finished difference Result 2537 states and 4091 transitions. [2018-10-24 20:58:26,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 20:58:26,070 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2018-10-24 20:58:26,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 20:58:26,091 INFO L225 Difference]: With dead ends: 2537 [2018-10-24 20:58:26,091 INFO L226 Difference]: Without dead ends: 1617 [2018-10-24 20:58:26,101 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 20:58:26,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1617 states. [2018-10-24 20:58:26,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1617 to 1586. [2018-10-24 20:58:26,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1586 states. [2018-10-24 20:58:26,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 2321 transitions. [2018-10-24 20:58:26,165 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 2321 transitions. Word has length 133 [2018-10-24 20:58:26,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 20:58:26,166 INFO L481 AbstractCegarLoop]: Abstraction has 1586 states and 2321 transitions. [2018-10-24 20:58:26,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 20:58:26,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 2321 transitions. [2018-10-24 20:58:26,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-10-24 20:58:26,172 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 20:58:26,173 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:58:26,173 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 20:58:26,173 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 20:58:26,173 INFO L82 PathProgramCache]: Analyzing trace with hash 505043483, now seen corresponding path program 1 times [2018-10-24 20:58:26,174 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 20:58:26,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:58:26,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 20:58:26,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:58:26,175 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 20:58:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 20:58:26,454 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 20:58:26,455 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 20:58:26,455 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 20:58:26,455 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 20:58:26,456 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 20:58:26,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 20:58:26,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 20:58:26,456 INFO L87 Difference]: Start difference. First operand 1586 states and 2321 transitions. Second operand 6 states. [2018-10-24 20:58:27,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 20:58:27,675 INFO L93 Difference]: Finished difference Result 3508 states and 5316 transitions. [2018-10-24 20:58:27,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 20:58:27,687 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2018-10-24 20:58:27,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 20:58:27,705 INFO L225 Difference]: With dead ends: 3508 [2018-10-24 20:58:27,705 INFO L226 Difference]: Without dead ends: 1928 [2018-10-24 20:58:27,714 INFO L605 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 [2018-10-24 20:58:27,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1928 states. [2018-10-24 20:58:27,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1928 to 1889. [2018-10-24 20:58:27,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1889 states. [2018-10-24 20:58:27,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 2675 transitions. [2018-10-24 20:58:27,786 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 2675 transitions. Word has length 157 [2018-10-24 20:58:27,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 20:58:27,786 INFO L481 AbstractCegarLoop]: Abstraction has 1889 states and 2675 transitions. [2018-10-24 20:58:27,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 20:58:27,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 2675 transitions. [2018-10-24 20:58:27,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-10-24 20:58:27,793 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 20:58:27,793 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 20:58:27,793 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 20:58:27,793 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 20:58:27,794 INFO L82 PathProgramCache]: Analyzing trace with hash -431970569, now seen corresponding path program 1 times [2018-10-24 20:58:27,794 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 20:58:27,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:58:27,795 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 20:58:27,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:58:27,795 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 20:58:27,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 20:58:28,194 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-24 20:58:28,374 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 20:58:28,736 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 20:58:28,737 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 20:58:28,737 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 20:58:28,738 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 198 with the following transitions: [2018-10-24 20:58:28,740 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [173], [175], [178], [186], [194], [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], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [546], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 20:58:28,807 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 20:58:28,807 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 20:58:31,191 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 20:58:43,538 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 20:58:43,540 INFO L272 AbstractInterpreter]: Visited 91 different actions 516 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 20:58:43,576 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 20:58:43,576 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 20:58:46,663 INFO L232 lantSequenceWeakener]: Weakened 12 states. On average, predicates are now at 77.27% of their original sizes. [2018-10-24 20:58:46,664 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 20:59:13,216 INFO L413 sIntCurrentIteration]: We have 196 unified AI predicates [2018-10-24 20:59:13,217 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 20:59:13,218 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 20:59:13,218 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [12] total 28 [2018-10-24 20:59:13,218 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 20:59:13,219 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-24 20:59:13,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-24 20:59:13,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2018-10-24 20:59:13,220 INFO L87 Difference]: Start difference. First operand 1889 states and 2675 transitions. Second operand 18 states. Received shutdown request... [2018-10-24 21:02:12,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-24 21:02:12,049 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:02:12,054 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:02:12,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:02:12 BoogieIcfgContainer [2018-10-24 21:02:12,055 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:02:12,056 INFO L168 Benchmark]: Toolchain (without parser) took 241604.69 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -950.6 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-24 21:02:12,057 INFO L168 Benchmark]: CDTParser took 0.21 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 21:02:12,058 INFO L168 Benchmark]: CACSL2BoogieTranslator took 788.72 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 44.9 MB). Peak memory consumption was 44.9 MB. Max. memory is 7.1 GB. [2018-10-24 21:02:12,059 INFO L168 Benchmark]: Boogie Procedure Inliner took 240.68 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 713.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -800.8 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2018-10-24 21:02:12,060 INFO L168 Benchmark]: Boogie Preprocessor took 103.21 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:02:12,060 INFO L168 Benchmark]: RCFGBuilder took 3169.59 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: 107.8 MB). Peak memory consumption was 107.8 MB. Max. memory is 7.1 GB. [2018-10-24 21:02:12,061 INFO L168 Benchmark]: TraceAbstraction took 237296.85 ms. Allocated memory was 2.2 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -302.5 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-24 21:02:12,070 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 788.72 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 44.9 MB). Peak memory consumption was 44.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 240.68 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 713.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -800.8 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 103.21 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3169.59 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: 107.8 MB). Peak memory consumption was 107.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 237296.85 ms. Allocated memory was 2.2 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -302.5 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 85). Cancelled while BasicCegarLoop was constructing difference of abstraction (1889states) and FLOYD_HOARE automaton (currently 21 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (3114 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 237.2s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 189.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 489 SDtfs, 4438 SDslu, 418 SDs, 0 SdLazy, 4944 SolverSat, 1117 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 100.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 236 GetRequests, 161 SyntacticMatches, 32 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 28.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1889occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 14.8s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9939829192546584 AbsIntWeakeningRatio, 0.1326530612244898 AbsIntAvgWeakeningVarsNumRemoved, 235.89795918367346 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 83 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 638 NumberOfCodeBlocks, 638 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 633 ConstructedInterpolants, 0 QuantifiedInterpolants, 773858 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 213/215 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown