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/Problem16_label24_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:57:31,666 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:57:31,668 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:57:31,680 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:57:31,680 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:57:31,681 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:57:31,682 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:57:31,684 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:57:31,686 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:57:31,686 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:57:31,687 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:57:31,688 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:57:31,689 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:57:31,689 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:57:31,691 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:57:31,691 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:57:31,692 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:57:31,694 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:57:31,696 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:57:31,698 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:57:31,699 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:57:31,700 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:57:31,703 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 21:57:31,711 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 21:57:31,740 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:57:31,740 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:57:31,741 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:57:31,741 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:57:31,741 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:57:31,742 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:57:31,742 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:57:31,742 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:57:31,742 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:57:31,743 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:57:31,743 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:57:31,743 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:57:31,745 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:57:31,745 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:57:31,745 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:57:31,745 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:57:31,745 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:57:31,745 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:57:31,746 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:57:31,746 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:57:31,746 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:57:31,746 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:57:31,746 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:57:31,747 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:57:31,748 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:57:31,748 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:57:31,748 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:57:31,748 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:57:31,749 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:57:31,749 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:57:31,749 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:57:31,749 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:57:31,749 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:57:31,749 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:57:31,807 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:57:31,822 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:57:31,828 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:57:31,830 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:57:31,830 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:57:31,831 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label24_true-unreach-call.c [2018-10-24 21:57:31,904 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/29d63a0e7/135b88073ae24219be5cd9375e7bdea4/FLAG70eefd0ca [2018-10-24 21:57:32,535 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:57:32,536 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label24_true-unreach-call.c [2018-10-24 21:57:32,558 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/29d63a0e7/135b88073ae24219be5cd9375e7bdea4/FLAG70eefd0ca [2018-10-24 21:57:32,573 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/29d63a0e7/135b88073ae24219be5cd9375e7bdea4 [2018-10-24 21:57:32,584 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:57:32,586 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:57:32,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:57:32,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:57:32,591 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:57:32,592 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:57:32" (1/1) ... [2018-10-24 21:57:32,595 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2563410d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:32, skipping insertion in model container [2018-10-24 21:57:32,595 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:57:32" (1/1) ... [2018-10-24 21:57:32,605 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:57:32,694 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:57:33,419 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:57:33,424 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:57:33,684 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:57:33,709 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:57:33,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:33 WrapperNode [2018-10-24 21:57:33,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:57:33,711 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:57:33,711 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:57:33,711 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:57:33,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:33" (1/1) ... [2018-10-24 21:57:33,773 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:33" (1/1) ... [2018-10-24 21:57:34,037 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:57:34,037 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:57:34,037 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:57:34,037 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:57:34,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:33" (1/1) ... [2018-10-24 21:57:34,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:33" (1/1) ... [2018-10-24 21:57:34,060 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:33" (1/1) ... [2018-10-24 21:57:34,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:33" (1/1) ... [2018-10-24 21:57:34,120 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:33" (1/1) ... [2018-10-24 21:57:34,150 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:33" (1/1) ... [2018-10-24 21:57:34,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:33" (1/1) ... [2018-10-24 21:57:34,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:57:34,195 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:57:34,195 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:57:34,195 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:57:34,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:33" (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 21:57:34,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:57:34,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:57:34,270 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:57:34,270 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:57:34,270 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:57:34,270 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:57:34,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:57:34,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:57:34,271 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:57:34,271 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:57:40,362 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:57:40,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:57:40 BoogieIcfgContainer [2018-10-24 21:57:40,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:57:40,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:57:40,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:57:40,368 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:57:40,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:57:32" (1/3) ... [2018-10-24 21:57:40,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@107ac9de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:57:40, skipping insertion in model container [2018-10-24 21:57:40,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:57:33" (2/3) ... [2018-10-24 21:57:40,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@107ac9de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:57:40, skipping insertion in model container [2018-10-24 21:57:40,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:57:40" (3/3) ... [2018-10-24 21:57:40,373 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label24_true-unreach-call.c [2018-10-24 21:57:40,382 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:57:40,390 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:57:40,408 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:57:40,457 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:57:40,457 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:57:40,458 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:57:40,458 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:57:40,458 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:57:40,458 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:57:40,458 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:57:40,458 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:57:40,503 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-24 21:57:40,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-24 21:57:40,513 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:57:40,514 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] [2018-10-24 21:57:40,516 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:57:40,522 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:57:40,522 INFO L82 PathProgramCache]: Analyzing trace with hash -2128863117, now seen corresponding path program 1 times [2018-10-24 21:57:40,525 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:57:40,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:57:40,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:57:40,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:57:40,575 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:57:40,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:57:41,045 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:57:41,215 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 21:57:41,217 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:57:41,218 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:57:41,218 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:57:41,225 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:57:41,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:57:41,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:57:41,245 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-10-24 21:57:44,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:57:44,720 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-10-24 21:57:44,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:57:44,729 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2018-10-24 21:57:44,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:57:44,755 INFO L225 Difference]: With dead ends: 1156 [2018-10-24 21:57:44,756 INFO L226 Difference]: Without dead ends: 744 [2018-10-24 21:57:44,767 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:57:44,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-10-24 21:57:44,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-10-24 21:57:44,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-24 21:57:44,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1329 transitions. [2018-10-24 21:57:44,876 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1329 transitions. Word has length 59 [2018-10-24 21:57:44,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:57:44,877 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1329 transitions. [2018-10-24 21:57:44,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:57:44,877 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1329 transitions. [2018-10-24 21:57:44,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-10-24 21:57:44,887 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:57:44,888 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:57:44,888 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:57:44,888 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:57:44,889 INFO L82 PathProgramCache]: Analyzing trace with hash -2051770448, now seen corresponding path program 1 times [2018-10-24 21:57:44,889 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:57:44,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:57:44,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:57:44,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:57:44,891 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:57:44,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:57:45,377 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:57:45,377 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:57:45,377 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:57:45,377 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:57:45,380 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:57:45,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:57:45,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:57:45,382 INFO L87 Difference]: Start difference. First operand 744 states and 1329 transitions. Second operand 6 states. [2018-10-24 21:57:51,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:57:51,628 INFO L93 Difference]: Finished difference Result 2183 states and 3908 transitions. [2018-10-24 21:57:51,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:57:51,630 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 167 [2018-10-24 21:57:51,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:57:51,642 INFO L225 Difference]: With dead ends: 2183 [2018-10-24 21:57:51,642 INFO L226 Difference]: Without dead ends: 1445 [2018-10-24 21:57:51,649 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:57:51,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2018-10-24 21:57:51,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 1424. [2018-10-24 21:57:51,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1424 states. [2018-10-24 21:57:51,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 2239 transitions. [2018-10-24 21:57:51,709 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 2239 transitions. Word has length 167 [2018-10-24 21:57:51,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:57:51,710 INFO L481 AbstractCegarLoop]: Abstraction has 1424 states and 2239 transitions. [2018-10-24 21:57:51,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:57:51,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 2239 transitions. [2018-10-24 21:57:51,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-24 21:57:51,714 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:57:51,715 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:57:51,715 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:57:51,715 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:57:51,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1876159715, now seen corresponding path program 1 times [2018-10-24 21:57:51,715 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:57:51,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:57:51,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:57:51,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:57:51,717 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:57:51,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:57:52,000 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:57:52,001 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:57:52,001 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:57:52,001 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:57:52,002 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:57:52,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:57:52,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:57:52,002 INFO L87 Difference]: Start difference. First operand 1424 states and 2239 transitions. Second operand 6 states. [2018-10-24 21:57:58,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:57:58,550 INFO L93 Difference]: Finished difference Result 3902 states and 6351 transitions. [2018-10-24 21:57:58,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:57:58,551 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2018-10-24 21:57:58,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:57:58,566 INFO L225 Difference]: With dead ends: 3902 [2018-10-24 21:57:58,567 INFO L226 Difference]: Without dead ends: 2484 [2018-10-24 21:57:58,572 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:57:58,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2484 states. [2018-10-24 21:57:58,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2484 to 2474. [2018-10-24 21:57:58,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2474 states. [2018-10-24 21:57:58,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 3744 transitions. [2018-10-24 21:57:58,640 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 3744 transitions. Word has length 170 [2018-10-24 21:57:58,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:57:58,640 INFO L481 AbstractCegarLoop]: Abstraction has 2474 states and 3744 transitions. [2018-10-24 21:57:58,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:57:58,641 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 3744 transitions. [2018-10-24 21:57:58,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-10-24 21:57:58,646 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:57:58,647 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 21:57:58,647 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:57:58,647 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:57:58,647 INFO L82 PathProgramCache]: Analyzing trace with hash -170942544, now seen corresponding path program 1 times [2018-10-24 21:57:58,648 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:57:58,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:57:58,649 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:57:58,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:57:58,649 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:57:58,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:57:59,018 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:57:59,476 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 104 proven. 106 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:57:59,476 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:57:59,476 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:57:59,478 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 287 with the following transitions: [2018-10-24 21:57:59,480 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [551], [553], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-24 21:57:59,561 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:57:59,561 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:58:02,428 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:58:02,430 INFO L272 AbstractInterpreter]: Visited 121 different actions 121 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 21:58:02,444 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:58:02,444 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:58:04,908 INFO L232 lantSequenceWeakener]: Weakened 278 states. On average, predicates are now at 78.01% of their original sizes. [2018-10-24 21:58:04,908 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:58:05,228 INFO L413 sIntCurrentIteration]: We have 285 unified AI predicates [2018-10-24 21:58:05,228 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:58:05,229 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:58:05,229 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 21:58:05,229 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:58:05,230 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 21:58:05,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 21:58:05,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 21:58:05,231 INFO L87 Difference]: Start difference. First operand 2474 states and 3744 transitions. Second operand 7 states. [2018-10-24 21:58:07,807 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:58:33,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:58:33,887 INFO L93 Difference]: Finished difference Result 5282 states and 7967 transitions. [2018-10-24 21:58:33,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:58:33,887 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 286 [2018-10-24 21:58:33,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:58:33,902 INFO L225 Difference]: With dead ends: 5282 [2018-10-24 21:58:33,903 INFO L226 Difference]: Without dead ends: 2814 [2018-10-24 21:58:33,911 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 286 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:58:33,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2814 states. [2018-10-24 21:58:33,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2814 to 2812. [2018-10-24 21:58:33,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2812 states. [2018-10-24 21:58:33,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2812 states to 2812 states and 4089 transitions. [2018-10-24 21:58:33,990 INFO L78 Accepts]: Start accepts. Automaton has 2812 states and 4089 transitions. Word has length 286 [2018-10-24 21:58:33,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:58:33,991 INFO L481 AbstractCegarLoop]: Abstraction has 2812 states and 4089 transitions. [2018-10-24 21:58:33,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 21:58:33,991 INFO L276 IsEmpty]: Start isEmpty. Operand 2812 states and 4089 transitions. [2018-10-24 21:58:33,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-10-24 21:58:33,999 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:58:33,999 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:58:34,000 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:58:34,000 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:58:34,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1637733261, now seen corresponding path program 1 times [2018-10-24 21:58:34,001 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:58:34,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:58:34,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:58:34,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:58:34,002 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:58:34,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:58:34,304 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 251 proven. 110 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-10-24 21:58:34,304 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:58:34,304 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:58:34,304 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 379 with the following transitions: [2018-10-24 21:58:34,305 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [551], [553], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-24 21:58:34,314 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:58:34,314 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:58:36,839 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:58:49,752 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:58:49,753 INFO L272 AbstractInterpreter]: Visited 125 different actions 481 times. Merged at 5 different actions 14 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 21:58:49,762 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:58:49,762 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:58:53,464 INFO L232 lantSequenceWeakener]: Weakened 196 states. On average, predicates are now at 77.99% of their original sizes. [2018-10-24 21:58:53,464 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:00:53,595 INFO L413 sIntCurrentIteration]: We have 377 unified AI predicates [2018-10-24 22:00:53,596 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:00:53,596 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:00:53,596 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [6] total 19 [2018-10-24 22:00:53,596 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:00:53,598 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-24 22:00:53,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-24 22:00:53,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2018-10-24 22:00:53,599 INFO L87 Difference]: Start difference. First operand 2812 states and 4089 transitions. Second operand 15 states. Received shutdown request... [2018-10-24 22:01:35,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-24 22:01:35,758 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:01:35,763 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:01:35,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:01:35 BoogieIcfgContainer [2018-10-24 22:01:35,764 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:01:35,765 INFO L168 Benchmark]: Toolchain (without parser) took 243179.97 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.1 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 540.3 MB. Max. memory is 7.1 GB. [2018-10-24 22:01:35,766 INFO L168 Benchmark]: CDTParser took 0.20 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 22:01:35,767 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1123.41 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-24 22:01:35,768 INFO L168 Benchmark]: Boogie Procedure Inliner took 326.07 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 759.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -869.2 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. [2018-10-24 22:01:35,769 INFO L168 Benchmark]: Boogie Preprocessor took 157.32 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: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-10-24 22:01:35,770 INFO L168 Benchmark]: RCFGBuilder took 6168.78 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 244.4 MB). Peak memory consumption was 244.4 MB. Max. memory is 7.1 GB. [2018-10-24 22:01:35,771 INFO L168 Benchmark]: TraceAbstraction took 235399.27 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.4 GB). Free memory was 2.0 GB in the beginning and 3.0 GB in the end (delta: -1.0 GB). Peak memory consumption was 307.7 MB. Max. memory is 7.1 GB. [2018-10-24 22:01:35,776 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1123.41 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 326.07 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 759.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -869.2 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 157.32 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: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6168.78 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 244.4 MB). Peak memory consumption was 244.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 235399.27 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.4 GB). Free memory was 2.0 GB in the beginning and 3.0 GB in the end (delta: -1.0 GB). Peak memory consumption was 307.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 163]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 163). Cancelled while BasicCegarLoop was constructing difference of abstraction (2812states) and FLOYD_HOARE automaton (currently 16 states, 15 states before enhancement),while ReachableStatesComputation was computing reachable states (193 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 235.3s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 87.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 749 SDtfs, 5039 SDslu, 363 SDs, 0 SdLazy, 6112 SolverSat, 2217 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 37.6s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 694 GetRequests, 420 SyntacticMatches, 234 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1038 ImplicationChecksByTransitivity, 121.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2812occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 18.4s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9963083979158456 AbsIntWeakeningRatio, 0.08761329305135952 AbsIntAvgWeakeningVarsNumRemoved, 403.60574018126886 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 33 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 1060 NumberOfCodeBlocks, 1060 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 1055 ConstructedInterpolants, 0 QuantifiedInterpolants, 794620 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 554/770 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown