java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label26_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 03:08:06,494 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 03:08:06,496 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 03:08:06,513 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 03:08:06,513 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 03:08:06,514 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 03:08:06,515 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 03:08:06,517 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 03:08:06,519 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 03:08:06,520 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 03:08:06,522 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 03:08:06,522 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 03:08:06,523 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 03:08:06,526 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 03:08:06,532 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 03:08:06,536 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 03:08:06,537 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 03:08:06,539 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 03:08:06,543 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 03:08:06,547 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 03:08:06,549 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 03:08:06,551 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 03:08:06,555 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 03:08:06,563 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 03:08:06,563 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 03:08:06,566 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 03:08:06,567 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 03:08:06,567 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 03:08:06,592 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 03:08:06,593 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 03:08:06,594 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 03:08:06,594 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 03:08:06,594 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 03:08:06,594 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 03:08:06,594 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 03:08:06,594 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 03:08:06,595 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 03:08:06,595 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 03:08:06,595 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 03:08:06,595 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 03:08:06,596 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 03:08:06,596 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 03:08:06,596 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 03:08:06,597 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 03:08:06,597 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 03:08:06,597 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 03:08:06,597 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 03:08:06,597 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 03:08:06,598 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 03:08:06,598 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 03:08:06,598 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 03:08:06,598 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 03:08:06,598 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 03:08:06,598 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 03:08:06,599 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 03:08:06,599 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 03:08:06,599 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 03:08:06,599 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 03:08:06,599 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 03:08:06,600 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 03:08:06,600 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 03:08:06,600 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 03:08:06,663 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 03:08:06,678 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 03:08:06,682 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 03:08:06,684 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 03:08:06,684 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 03:08:06,685 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label26_true-unreach-call.c [2018-11-07 03:08:06,748 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/837e533db/dc6736f41b4a4c75962713d4a6e337f3/FLAGb1fa8823c [2018-11-07 03:08:07,568 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 03:08:07,569 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label26_true-unreach-call.c [2018-11-07 03:08:07,596 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/837e533db/dc6736f41b4a4c75962713d4a6e337f3/FLAGb1fa8823c [2018-11-07 03:08:07,612 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/837e533db/dc6736f41b4a4c75962713d4a6e337f3 [2018-11-07 03:08:07,623 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 03:08:07,625 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 03:08:07,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 03:08:07,626 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 03:08:07,630 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 03:08:07,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:08:07" (1/1) ... [2018-11-07 03:08:07,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@193d11b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:08:07, skipping insertion in model container [2018-11-07 03:08:07,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:08:07" (1/1) ... [2018-11-07 03:08:07,646 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 03:08:07,788 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 03:08:09,136 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:08:09,147 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 03:08:09,751 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:08:09,784 INFO L193 MainTranslator]: Completed translation [2018-11-07 03:08:09,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:08:09 WrapperNode [2018-11-07 03:08:09,785 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 03:08:09,786 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 03:08:09,786 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 03:08:09,786 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 03:08:09,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:08:09" (1/1) ... [2018-11-07 03:08:10,135 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:08:09" (1/1) ... [2018-11-07 03:08:10,146 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 03:08:10,146 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 03:08:10,146 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 03:08:10,147 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 03:08:10,158 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:08:09" (1/1) ... [2018-11-07 03:08:10,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:08:09" (1/1) ... [2018-11-07 03:08:10,175 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:08:09" (1/1) ... [2018-11-07 03:08:10,175 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:08:09" (1/1) ... [2018-11-07 03:08:10,260 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:08:09" (1/1) ... [2018-11-07 03:08:10,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:08:09" (1/1) ... [2018-11-07 03:08:10,322 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:08:09" (1/1) ... [2018-11-07 03:08:10,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 03:08:10,347 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 03:08:10,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 03:08:10,348 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 03:08:10,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:08:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 03:08:10,414 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 03:08:10,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 03:08:10,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 03:08:10,415 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 03:08:10,415 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 03:08:10,416 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 03:08:10,416 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 03:08:10,416 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 03:08:10,416 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 03:08:10,416 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 03:08:10,416 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 03:08:10,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 03:08:10,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 03:08:10,420 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 03:08:10,420 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 03:08:19,946 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 03:08:19,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:08:19 BoogieIcfgContainer [2018-11-07 03:08:19,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 03:08:19,948 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 03:08:19,948 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 03:08:19,951 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 03:08:19,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:08:07" (1/3) ... [2018-11-07 03:08:19,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e6974a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:08:19, skipping insertion in model container [2018-11-07 03:08:19,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:08:09" (2/3) ... [2018-11-07 03:08:19,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e6974a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:08:19, skipping insertion in model container [2018-11-07 03:08:19,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:08:19" (3/3) ... [2018-11-07 03:08:19,955 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label26_true-unreach-call.c [2018-11-07 03:08:19,965 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 03:08:19,975 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 03:08:19,993 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 03:08:20,044 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 03:08:20,044 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 03:08:20,044 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 03:08:20,044 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 03:08:20,045 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 03:08:20,045 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 03:08:20,045 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 03:08:20,045 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 03:08:20,104 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-11-07 03:08:20,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-11-07 03:08:20,114 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:08:20,116 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] [2018-11-07 03:08:20,118 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:08:20,124 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:08:20,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1342118596, now seen corresponding path program 1 times [2018-11-07 03:08:20,128 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:08:20,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:08:20,282 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:08:20,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:08:20,282 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:08:20,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:08:20,850 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-11-07 03:08:20,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:08:20,921 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:08:20,924 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 03:08:20,924 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:08:20,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 03:08:20,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 03:08:20,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:08:20,976 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 4 states. [2018-11-07 03:08:32,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:08:32,938 INFO L93 Difference]: Finished difference Result 3234 states and 6255 transitions. [2018-11-07 03:08:32,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 03:08:32,940 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2018-11-07 03:08:32,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:08:32,979 INFO L225 Difference]: With dead ends: 3234 [2018-11-07 03:08:32,979 INFO L226 Difference]: Without dead ends: 2388 [2018-11-07 03:08:32,991 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:08:33,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2018-11-07 03:08:33,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 1604. [2018-11-07 03:08:33,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-11-07 03:08:33,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2600 transitions. [2018-11-07 03:08:33,148 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2600 transitions. Word has length 52 [2018-11-07 03:08:33,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:08:33,149 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2600 transitions. [2018-11-07 03:08:33,149 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 03:08:33,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2600 transitions. [2018-11-07 03:08:33,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-11-07 03:08:33,160 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:08:33,160 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:08:33,161 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:08:33,162 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:08:33,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1915502122, now seen corresponding path program 1 times [2018-11-07 03:08:33,162 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:08:33,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:08:33,163 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:08:33,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:08:33,167 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:08:33,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:08:33,426 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:08:33,426 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:08:33,427 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 03:08:33,427 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:08:33,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 03:08:33,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 03:08:33,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-07 03:08:33,430 INFO L87 Difference]: Start difference. First operand 1604 states and 2600 transitions. Second operand 5 states. [2018-11-07 03:08:44,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:08:44,867 INFO L93 Difference]: Finished difference Result 4873 states and 7923 transitions. [2018-11-07 03:08:44,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 03:08:44,868 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2018-11-07 03:08:44,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:08:44,888 INFO L225 Difference]: With dead ends: 4873 [2018-11-07 03:08:44,888 INFO L226 Difference]: Without dead ends: 3275 [2018-11-07 03:08:44,894 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:08:44,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3275 states. [2018-11-07 03:08:44,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3275 to 3241. [2018-11-07 03:08:44,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3241 states. [2018-11-07 03:08:45,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3241 states to 3241 states and 4816 transitions. [2018-11-07 03:08:45,007 INFO L78 Accepts]: Start accepts. Automaton has 3241 states and 4816 transitions. Word has length 132 [2018-11-07 03:08:45,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:08:45,008 INFO L480 AbstractCegarLoop]: Abstraction has 3241 states and 4816 transitions. [2018-11-07 03:08:45,008 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 03:08:45,009 INFO L276 IsEmpty]: Start isEmpty. Operand 3241 states and 4816 transitions. [2018-11-07 03:08:45,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-11-07 03:08:45,013 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:08:45,014 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:08:45,014 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:08:45,014 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:08:45,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1363927151, now seen corresponding path program 1 times [2018-11-07 03:08:45,015 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:08:45,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:08:45,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:08:45,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:08:45,016 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:08:45,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:08:45,285 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:08:45,286 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:08:45,286 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 03:08:45,286 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:08:45,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:08:45,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:08:45,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:08:45,287 INFO L87 Difference]: Start difference. First operand 3241 states and 4816 transitions. Second operand 6 states. [2018-11-07 03:08:52,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:08:52,129 INFO L93 Difference]: Finished difference Result 9805 states and 14879 transitions. [2018-11-07 03:08:52,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:08:52,133 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 161 [2018-11-07 03:08:52,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:08:52,173 INFO L225 Difference]: With dead ends: 9805 [2018-11-07 03:08:52,175 INFO L226 Difference]: Without dead ends: 6570 [2018-11-07 03:08:52,185 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 03:08:52,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6570 states. [2018-11-07 03:08:52,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6570 to 6496. [2018-11-07 03:08:52,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6496 states. [2018-11-07 03:08:52,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6496 states to 6496 states and 9467 transitions. [2018-11-07 03:08:52,380 INFO L78 Accepts]: Start accepts. Automaton has 6496 states and 9467 transitions. Word has length 161 [2018-11-07 03:08:52,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:08:52,381 INFO L480 AbstractCegarLoop]: Abstraction has 6496 states and 9467 transitions. [2018-11-07 03:08:52,381 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:08:52,382 INFO L276 IsEmpty]: Start isEmpty. Operand 6496 states and 9467 transitions. [2018-11-07 03:08:52,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-11-07 03:08:52,385 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:08:52,385 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:08:52,386 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:08:52,386 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:08:52,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1064317105, now seen corresponding path program 1 times [2018-11-07 03:08:52,386 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:08:52,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:08:52,388 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:08:52,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:08:52,388 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:08:52,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:08:52,731 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 03:08:52,806 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:08:52,806 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:08:52,806 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 03:08:52,806 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:08:52,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:08:52,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:08:52,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:08:52,808 INFO L87 Difference]: Start difference. First operand 6496 states and 9467 transitions. Second operand 6 states. [2018-11-07 03:09:02,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:09:02,826 INFO L93 Difference]: Finished difference Result 21863 states and 33123 transitions. [2018-11-07 03:09:02,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:09:02,827 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 177 [2018-11-07 03:09:02,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:09:02,918 INFO L225 Difference]: With dead ends: 21863 [2018-11-07 03:09:02,919 INFO L226 Difference]: Without dead ends: 15373 [2018-11-07 03:09:02,954 INFO L604 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 [2018-11-07 03:09:02,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15373 states. [2018-11-07 03:09:03,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15373 to 15285. [2018-11-07 03:09:03,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15285 states. [2018-11-07 03:09:03,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15285 states to 15285 states and 21402 transitions. [2018-11-07 03:09:03,318 INFO L78 Accepts]: Start accepts. Automaton has 15285 states and 21402 transitions. Word has length 177 [2018-11-07 03:09:03,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:09:03,319 INFO L480 AbstractCegarLoop]: Abstraction has 15285 states and 21402 transitions. [2018-11-07 03:09:03,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:09:03,319 INFO L276 IsEmpty]: Start isEmpty. Operand 15285 states and 21402 transitions. [2018-11-07 03:09:03,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-11-07 03:09:03,323 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:09:03,323 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:09:03,324 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:09:03,324 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:09:03,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1136410638, now seen corresponding path program 1 times [2018-11-07 03:09:03,324 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:09:03,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:09:03,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:09:03,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:09:03,326 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:09:03,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:09:03,626 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 03:09:03,814 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-07 03:09:03,814 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:09:03,815 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:09:03,816 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 199 with the following transitions: [2018-11-07 03:09:03,818 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2179], [2183], [2185], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [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], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2664], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 03:09:03,913 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:09:03,914 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:09:08,784 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:09:30,872 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:09:30,873 INFO L272 AbstractInterpreter]: Visited 153 different actions 446 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 03:09:30,896 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:09:30,896 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:09:34,667 INFO L227 lantSequenceWeakener]: Weakened 91 states. On average, predicates are now at 77.22% of their original sizes. [2018-11-07 03:09:34,668 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:09:46,003 INFO L415 sIntCurrentIteration]: We unified 197 AI predicates to 197 [2018-11-07 03:09:46,004 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:09:46,004 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:09:46,005 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [4] total 20 [2018-11-07 03:09:46,005 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:09:46,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 03:09:46,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 03:09:46,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2018-11-07 03:09:46,006 INFO L87 Difference]: Start difference. First operand 15285 states and 21402 transitions. Second operand 18 states. Received shutdown request... [2018-11-07 03:11:54,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-07 03:11:54,121 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 03:11:54,125 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 03:11:54,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 03:11:54 BoogieIcfgContainer [2018-11-07 03:11:54,126 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 03:11:54,127 INFO L168 Benchmark]: Toolchain (without parser) took 226502.89 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-11-07 03:11:54,128 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-11-07 03:11:54,129 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2159.33 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-11-07 03:11:54,130 INFO L168 Benchmark]: Boogie Procedure Inliner took 359.99 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 789.1 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. [2018-11-07 03:11:54,131 INFO L168 Benchmark]: Boogie Preprocessor took 200.76 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2018-11-07 03:11:54,132 INFO L168 Benchmark]: RCFGBuilder took 9599.61 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 650.0 MB). Peak memory consumption was 650.0 MB. Max. memory is 7.1 GB. [2018-11-07 03:11:54,133 INFO L168 Benchmark]: TraceAbstraction took 214178.19 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.6 GB in the beginning and 2.6 GB in the end (delta: -983.1 MB). Peak memory consumption was 892.8 MB. Max. memory is 7.1 GB. [2018-11-07 03:11:54,138 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 2159.33 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 359.99 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 789.1 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 200.76 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9599.61 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 650.0 MB). Peak memory consumption was 650.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 214178.19 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.6 GB in the beginning and 2.6 GB in the end (delta: -983.1 MB). Peak memory consumption was 892.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 147]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 147). Cancelled while BasicCegarLoop was constructing difference of abstraction (15285states) and FLOYD_HOARE automaton (currently 15 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (3144 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 214.0s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 168.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1147 SDtfs, 12841 SDslu, 990 SDs, 0 SdLazy, 22765 SolverSat, 4829 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 68.9s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 240 GetRequests, 187 SyntacticMatches, 7 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 15.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15285occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 27.0s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.995478328777821 AbsIntWeakeningRatio, 0.1065989847715736 AbsIntAvgWeakeningVarsNumRemoved, 19.624365482233504 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 4 MinimizatonAttempts, 980 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 720 NumberOfCodeBlocks, 720 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 715 ConstructedInterpolants, 0 QuantifiedInterpolants, 449069 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 139/180 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown