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/Problem18_label28_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 02:14:12,565 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 02:14:12,567 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 02:14:12,579 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 02:14:12,580 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 02:14:12,581 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 02:14:12,582 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 02:14:12,586 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 02:14:12,588 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 02:14:12,593 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 02:14:12,595 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 02:14:12,597 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 02:14:12,598 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 02:14:12,599 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 02:14:12,603 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 02:14:12,604 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 02:14:12,605 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 02:14:12,607 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 02:14:12,611 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 02:14:12,614 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 02:14:12,616 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 02:14:12,617 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 02:14:12,624 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 02:14:12,634 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 02:14:12,634 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 02:14:12,635 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 02:14:12,636 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 02:14:12,636 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 02:14:12,665 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 02:14:12,665 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 02:14:12,666 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 02:14:12,666 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 02:14:12,666 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 02:14:12,666 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 02:14:12,666 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 02:14:12,667 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 02:14:12,670 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 02:14:12,670 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 02:14:12,670 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 02:14:12,671 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 02:14:12,671 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 02:14:12,671 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 02:14:12,672 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 02:14:12,673 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 02:14:12,673 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 02:14:12,673 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 02:14:12,673 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 02:14:12,673 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 02:14:12,674 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 02:14:12,675 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 02:14:12,675 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 02:14:12,675 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 02:14:12,676 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 02:14:12,676 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 02:14:12,676 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 02:14:12,676 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 02:14:12,676 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 02:14:12,677 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 02:14:12,677 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 02:14:12,677 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 02:14:12,677 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 02:14:12,677 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 02:14:12,738 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 02:14:12,753 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 02:14:12,756 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 02:14:12,758 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 02:14:12,758 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 02:14:12,759 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label28_true-unreach-call.c [2018-10-24 02:14:12,816 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8c6ad5206/646cba1975b94bcea8dd7737832925ef/FLAG4f32af03c [2018-10-24 02:14:13,497 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 02:14:13,498 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label28_true-unreach-call.c [2018-10-24 02:14:13,521 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8c6ad5206/646cba1975b94bcea8dd7737832925ef/FLAG4f32af03c [2018-10-24 02:14:13,538 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8c6ad5206/646cba1975b94bcea8dd7737832925ef [2018-10-24 02:14:13,550 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 02:14:13,551 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 02:14:13,552 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 02:14:13,553 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 02:14:13,557 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 02:14:13,558 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:14:13" (1/1) ... [2018-10-24 02:14:13,561 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12b27a01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:14:13, skipping insertion in model container [2018-10-24 02:14:13,562 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:14:13" (1/1) ... [2018-10-24 02:14:13,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 02:14:13,696 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 02:14:14,776 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 02:14:14,782 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 02:14:15,328 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 02:14:15,361 INFO L193 MainTranslator]: Completed translation [2018-10-24 02:14:15,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:14:15 WrapperNode [2018-10-24 02:14:15,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 02:14:15,362 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 02:14:15,363 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 02:14:15,363 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 02:14:15,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:14:15" (1/1) ... [2018-10-24 02:14:15,435 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:14:15" (1/1) ... [2018-10-24 02:14:15,794 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 02:14:15,795 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 02:14:15,795 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 02:14:15,795 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 02:14:15,807 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:14:15" (1/1) ... [2018-10-24 02:14:15,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:14:15" (1/1) ... [2018-10-24 02:14:15,822 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:14:15" (1/1) ... [2018-10-24 02:14:15,823 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:14:15" (1/1) ... [2018-10-24 02:14:15,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:14:15" (1/1) ... [2018-10-24 02:14:15,938 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:14:15" (1/1) ... [2018-10-24 02:14:15,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:14:15" (1/1) ... [2018-10-24 02:14:16,011 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 02:14:16,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 02:14:16,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 02:14:16,012 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 02:14:16,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:14:15" (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 02:14:16,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 02:14:16,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 02:14:16,080 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 02:14:16,081 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 02:14:16,081 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 02:14:16,081 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 02:14:16,081 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 02:14:16,081 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 02:14:16,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 02:14:16,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 02:14:16,082 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 02:14:16,082 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 02:14:23,992 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 02:14:23,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:14:23 BoogieIcfgContainer [2018-10-24 02:14:23,994 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 02:14:23,995 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 02:14:23,995 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 02:14:23,998 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 02:14:23,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:14:13" (1/3) ... [2018-10-24 02:14:23,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d2a172 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:14:23, skipping insertion in model container [2018-10-24 02:14:24,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:14:15" (2/3) ... [2018-10-24 02:14:24,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d2a172 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:14:24, skipping insertion in model container [2018-10-24 02:14:24,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:14:23" (3/3) ... [2018-10-24 02:14:24,002 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label28_true-unreach-call.c [2018-10-24 02:14:24,012 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 02:14:24,021 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 02:14:24,039 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 02:14:24,087 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 02:14:24,088 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 02:14:24,088 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 02:14:24,088 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 02:14:24,088 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 02:14:24,088 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 02:14:24,089 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 02:14:24,089 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 02:14:24,128 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-24 02:14:24,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-10-24 02:14:24,139 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:14:24,141 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:14:24,144 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:14:24,151 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:14:24,152 INFO L82 PathProgramCache]: Analyzing trace with hash -2076114681, now seen corresponding path program 1 times [2018-10-24 02:14:24,155 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:14:24,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:14:24,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:14:24,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:14:24,203 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:14:24,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:14:24,677 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-24 02:14:24,727 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 02:14:24,730 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:14:24,730 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 02:14:24,730 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:14:24,738 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 02:14:24,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 02:14:24,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 02:14:24,757 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 4 states. [2018-10-24 02:14:35,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:14:35,627 INFO L93 Difference]: Finished difference Result 2974 states and 5747 transitions. [2018-10-24 02:14:35,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 02:14:35,629 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2018-10-24 02:14:35,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:14:35,668 INFO L225 Difference]: With dead ends: 2974 [2018-10-24 02:14:35,669 INFO L226 Difference]: Without dead ends: 2193 [2018-10-24 02:14:35,681 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 02:14:35,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2018-10-24 02:14:35,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 1474. [2018-10-24 02:14:35,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-24 02:14:35,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2384 transitions. [2018-10-24 02:14:35,853 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2384 transitions. Word has length 71 [2018-10-24 02:14:35,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:14:35,854 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2384 transitions. [2018-10-24 02:14:35,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 02:14:35,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2384 transitions. [2018-10-24 02:14:35,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-24 02:14:35,863 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:14:35,863 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:14:35,863 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:14:35,864 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:14:35,864 INFO L82 PathProgramCache]: Analyzing trace with hash 865904024, now seen corresponding path program 1 times [2018-10-24 02:14:35,864 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:14:35,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:14:35,865 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:14:35,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:14:35,866 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:14:35,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:14:36,108 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:14:36,109 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:14:36,109 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 02:14:36,109 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:14:36,111 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 02:14:36,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 02:14:36,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 02:14:36,112 INFO L87 Difference]: Start difference. First operand 1474 states and 2384 transitions. Second operand 5 states. [2018-10-24 02:14:45,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:14:45,171 INFO L93 Difference]: Finished difference Result 4422 states and 7235 transitions. [2018-10-24 02:14:45,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 02:14:45,172 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2018-10-24 02:14:45,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:14:45,192 INFO L225 Difference]: With dead ends: 4422 [2018-10-24 02:14:45,192 INFO L226 Difference]: Without dead ends: 2954 [2018-10-24 02:14:45,198 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 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 02:14:45,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2018-10-24 02:14:45,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2930. [2018-10-24 02:14:45,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2930 states. [2018-10-24 02:14:45,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2930 states to 2930 states and 4516 transitions. [2018-10-24 02:14:45,285 INFO L78 Accepts]: Start accepts. Automaton has 2930 states and 4516 transitions. Word has length 141 [2018-10-24 02:14:45,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:14:45,286 INFO L481 AbstractCegarLoop]: Abstraction has 2930 states and 4516 transitions. [2018-10-24 02:14:45,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 02:14:45,286 INFO L276 IsEmpty]: Start isEmpty. Operand 2930 states and 4516 transitions. [2018-10-24 02:14:45,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-24 02:14:45,291 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:14:45,292 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 02:14:45,292 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:14:45,292 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:14:45,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1444523296, now seen corresponding path program 1 times [2018-10-24 02:14:45,292 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:14:45,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:14:45,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:14:45,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:14:45,294 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:14:45,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:14:45,521 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:14:45,522 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:14:45,522 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 02:14:45,522 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:14:45,523 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 02:14:45,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 02:14:45,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 02:14:45,524 INFO L87 Difference]: Start difference. First operand 2930 states and 4516 transitions. Second operand 6 states. [2018-10-24 02:14:50,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:14:50,942 INFO L93 Difference]: Finished difference Result 7357 states and 11327 transitions. [2018-10-24 02:14:50,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 02:14:50,942 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2018-10-24 02:14:50,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:14:50,970 INFO L225 Difference]: With dead ends: 7357 [2018-10-24 02:14:50,970 INFO L226 Difference]: Without dead ends: 4433 [2018-10-24 02:14:50,980 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 02:14:50,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4433 states. [2018-10-24 02:14:51,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4433 to 4400. [2018-10-24 02:14:51,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4400 states. [2018-10-24 02:14:51,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4400 states to 4400 states and 5842 transitions. [2018-10-24 02:14:51,099 INFO L78 Accepts]: Start accepts. Automaton has 4400 states and 5842 transitions. Word has length 145 [2018-10-24 02:14:51,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:14:51,100 INFO L481 AbstractCegarLoop]: Abstraction has 4400 states and 5842 transitions. [2018-10-24 02:14:51,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 02:14:51,100 INFO L276 IsEmpty]: Start isEmpty. Operand 4400 states and 5842 transitions. [2018-10-24 02:14:51,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-24 02:14:51,103 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:14:51,103 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 02:14:51,104 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:14:51,104 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:14:51,104 INFO L82 PathProgramCache]: Analyzing trace with hash -797874491, now seen corresponding path program 1 times [2018-10-24 02:14:51,104 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:14:51,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:14:51,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:14:51,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:14:51,106 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:14:51,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:14:51,340 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:14:51,340 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:14:51,340 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 02:14:51,341 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:14:51,341 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 02:14:51,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 02:14:51,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 02:14:51,342 INFO L87 Difference]: Start difference. First operand 4400 states and 5842 transitions. Second operand 4 states. [2018-10-24 02:14:58,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:14:58,054 INFO L93 Difference]: Finished difference Result 17356 states and 23632 transitions. [2018-10-24 02:14:58,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 02:14:58,061 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 178 [2018-10-24 02:14:58,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:14:58,125 INFO L225 Difference]: With dead ends: 17356 [2018-10-24 02:14:58,126 INFO L226 Difference]: Without dead ends: 12962 [2018-10-24 02:14:58,153 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 02:14:58,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12962 states. [2018-10-24 02:14:58,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12962 to 12962. [2018-10-24 02:14:58,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12962 states. [2018-10-24 02:14:58,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12962 states to 12962 states and 16372 transitions. [2018-10-24 02:14:58,459 INFO L78 Accepts]: Start accepts. Automaton has 12962 states and 16372 transitions. Word has length 178 [2018-10-24 02:14:58,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:14:58,460 INFO L481 AbstractCegarLoop]: Abstraction has 12962 states and 16372 transitions. [2018-10-24 02:14:58,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 02:14:58,460 INFO L276 IsEmpty]: Start isEmpty. Operand 12962 states and 16372 transitions. [2018-10-24 02:14:58,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2018-10-24 02:14:58,466 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:14:58,466 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:14:58,467 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:14:58,467 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:14:58,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1768524495, now seen corresponding path program 1 times [2018-10-24 02:14:58,467 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:14:58,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:14:58,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:14:58,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:14:58,469 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:14:58,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:14:58,943 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:14:58,943 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 02:14:58,944 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 02:14:58,945 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 290 with the following transitions: [2018-10-24 02:14:58,947 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2055], [2063], [2071], [2079], [2087], [2091], [2093], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2216], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2328], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 02:14:59,023 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 02:14:59,024 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 02:15:02,398 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 02:15:02,400 INFO L272 AbstractInterpreter]: Visited 128 different actions 128 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 02:15:02,412 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:15:02,412 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 02:15:04,634 INFO L232 lantSequenceWeakener]: Weakened 281 states. On average, predicates are now at 78.2% of their original sizes. [2018-10-24 02:15:04,635 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 02:15:05,084 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 02:15:05,085 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 02:15:05,086 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 02:15:05,086 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:15:05,086 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 02:15:05,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 02:15:05,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 02:15:05,087 INFO L87 Difference]: Start difference. First operand 12962 states and 16372 transitions. Second operand 7 states. [2018-10-24 02:15:07,856 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 02:16:40,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:16:40,219 INFO L93 Difference]: Finished difference Result 26623 states and 33475 transitions. [2018-10-24 02:16:40,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 02:16:40,220 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 289 [2018-10-24 02:16:40,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:16:40,262 INFO L225 Difference]: With dead ends: 26623 [2018-10-24 02:16:40,262 INFO L226 Difference]: Without dead ends: 13667 [2018-10-24 02:16:40,296 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 289 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 02:16:40,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13667 states. [2018-10-24 02:16:40,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13667 to 13665. [2018-10-24 02:16:40,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13665 states. [2018-10-24 02:16:40,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13665 states to 13665 states and 17087 transitions. [2018-10-24 02:16:40,559 INFO L78 Accepts]: Start accepts. Automaton has 13665 states and 17087 transitions. Word has length 289 [2018-10-24 02:16:40,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:16:40,559 INFO L481 AbstractCegarLoop]: Abstraction has 13665 states and 17087 transitions. [2018-10-24 02:16:40,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 02:16:40,560 INFO L276 IsEmpty]: Start isEmpty. Operand 13665 states and 17087 transitions. [2018-10-24 02:16:40,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2018-10-24 02:16:40,576 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:16:40,577 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2018-10-24 02:16:40,577 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:16:40,578 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:16:40,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1575146157, now seen corresponding path program 1 times [2018-10-24 02:16:40,578 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:16:40,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:16:40,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:16:40,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:16:40,580 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:16:40,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:16:41,215 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 02:16:41,420 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 02:16:42,051 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 251 proven. 249 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 02:16:42,051 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 02:16:42,052 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 02:16:42,052 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 477 with the following transitions: [2018-10-24 02:16:42,052 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2055], [2063], [2071], [2079], [2087], [2091], [2093], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2216], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2328], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 02:16:42,062 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 02:16:42,062 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 02:16:53,158 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 02:16:53,158 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 02:16:53,169 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:16:53,169 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 02:16:58,473 INFO L232 lantSequenceWeakener]: Weakened 159 states. On average, predicates are now at 78.19% of their original sizes. [2018-10-24 02:16:58,473 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 02:17:55,993 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 02:17:55,993 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 02:17:55,994 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2018-10-24 02:17:55,994 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:17:55,995 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-24 02:17:55,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-24 02:17:55,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2018-10-24 02:17:55,995 INFO L87 Difference]: Start difference. First operand 13665 states and 17087 transitions. Second operand 16 states. Received shutdown request... [2018-10-24 02:17:59,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 02:17:59,747 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 02:17:59,752 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 02:17:59,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:17:59 BoogieIcfgContainer [2018-10-24 02:17:59,753 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 02:17:59,753 INFO L168 Benchmark]: Toolchain (without parser) took 226203.38 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 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-24 02:17:59,755 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 02:17:59,755 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1809.42 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-24 02:17:59,756 INFO L168 Benchmark]: Boogie Procedure Inliner took 432.10 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 776.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -951.9 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. [2018-10-24 02:17:59,757 INFO L168 Benchmark]: Boogie Preprocessor took 216.70 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: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2018-10-24 02:17:59,758 INFO L168 Benchmark]: RCFGBuilder took 7981.69 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: 491.7 MB). Peak memory consumption was 491.7 MB. Max. memory is 7.1 GB. [2018-10-24 02:17:59,759 INFO L168 Benchmark]: TraceAbstraction took 215757.98 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 2.5 GB in the end (delta: -804.4 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-10-24 02:17:59,764 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 1809.42 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 432.10 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 776.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -951.9 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 216.70 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: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7981.69 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: 491.7 MB). Peak memory consumption was 491.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 215757.98 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 2.5 GB in the end (delta: -804.4 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 201]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 201). Cancelled while BasicCegarLoop was constructing difference of abstraction (13665states) and FLOYD_HOARE automaton (currently 9 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (13 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 215.6s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 131.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2019 SDtfs, 9114 SDslu, 903 SDs, 0 SdLazy, 18813 SolverSat, 5073 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 85.3s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 798 GetRequests, 644 SyntacticMatches, 113 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 644 ImplicationChecksByTransitivity, 58.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13665occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 14.5s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.996797063460406 AbsIntWeakeningRatio, 0.07601572739187418 AbsIntAvgWeakeningVarsNumRemoved, 443.0642201834862 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 5 MinimizatonAttempts, 778 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 1300 NumberOfCodeBlocks, 1300 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1294 ConstructedInterpolants, 0 QuantifiedInterpolants, 2219973 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 669/920 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown