java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label03_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:57:22,409 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:57:22,411 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:57:22,429 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:57:22,430 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:57:22,432 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:57:22,433 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:57:22,435 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:57:22,438 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:57:22,439 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:57:22,441 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:57:22,441 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:57:22,443 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:57:22,445 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:57:22,448 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:57:22,454 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:57:22,456 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:57:22,460 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:57:22,464 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:57:22,466 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:57:22,467 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:57:22,468 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:57:22,470 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 18:57:22,478 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 18:57:22,478 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 18:57:22,479 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 18:57:22,480 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 18:57:22,480 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 18:57:22,504 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:57:22,504 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:57:22,505 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:57:22,505 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:57:22,506 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:57:22,506 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:57:22,506 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:57:22,506 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:57:22,506 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:57:22,507 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:57:22,507 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:57:22,507 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:57:22,508 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:57:22,509 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:57:22,509 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:57:22,509 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:57:22,509 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:57:22,509 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:57:22,509 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:57:22,510 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:57:22,511 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:57:22,511 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:57:22,512 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:57:22,512 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:57:22,512 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:57:22,512 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:57:22,512 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:57:22,513 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:57:22,513 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:57:22,513 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:57:22,513 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:57:22,513 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:57:22,513 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:57:22,514 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:57:22,564 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:57:22,580 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:57:22,584 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:57:22,585 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:57:22,586 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:57:22,586 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label03_false-unreach-call.c [2018-10-24 18:57:22,648 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5f43682dc/609c1bd92a184e3593e7b25e3cd7c467/FLAGa9a700314 [2018-10-24 18:57:23,421 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:57:23,422 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label03_false-unreach-call.c [2018-10-24 18:57:23,449 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5f43682dc/609c1bd92a184e3593e7b25e3cd7c467/FLAGa9a700314 [2018-10-24 18:57:23,466 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5f43682dc/609c1bd92a184e3593e7b25e3cd7c467 [2018-10-24 18:57:23,478 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:57:23,480 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:57:23,481 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:57:23,482 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:57:23,486 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:57:23,487 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:57:23" (1/1) ... [2018-10-24 18:57:23,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43ac7e1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:23, skipping insertion in model container [2018-10-24 18:57:23,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:57:23" (1/1) ... [2018-10-24 18:57:23,503 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:57:23,642 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:57:24,670 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:57:24,674 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:57:25,173 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:57:25,203 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:57:25,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:25 WrapperNode [2018-10-24 18:57:25,203 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:57:25,204 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:57:25,205 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:57:25,205 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:57:25,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:25" (1/1) ... [2018-10-24 18:57:25,270 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:25" (1/1) ... [2018-10-24 18:57:25,677 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:57:25,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:57:25,678 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:57:25,678 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:57:25,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:25" (1/1) ... [2018-10-24 18:57:25,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:25" (1/1) ... [2018-10-24 18:57:25,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:25" (1/1) ... [2018-10-24 18:57:25,719 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:25" (1/1) ... [2018-10-24 18:57:25,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:25" (1/1) ... [2018-10-24 18:57:25,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:25" (1/1) ... [2018-10-24 18:57:25,920 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:25" (1/1) ... [2018-10-24 18:57:25,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:57:25,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:57:25,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:57:25,965 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:57:25,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:25" (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 18:57:26,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:57:26,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:57:26,045 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 18:57:26,045 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 18:57:26,046 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 18:57:26,046 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 18:57:26,046 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:57:26,046 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:57:26,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:57:26,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:57:26,047 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:57:26,047 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:57:34,678 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:57:34,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:57:34 BoogieIcfgContainer [2018-10-24 18:57:34,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:57:34,681 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:57:34,681 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:57:34,684 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:57:34,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:57:23" (1/3) ... [2018-10-24 18:57:34,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e4712a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:57:34, skipping insertion in model container [2018-10-24 18:57:34,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:25" (2/3) ... [2018-10-24 18:57:34,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e4712a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:57:34, skipping insertion in model container [2018-10-24 18:57:34,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:57:34" (3/3) ... [2018-10-24 18:57:34,688 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label03_false-unreach-call.c [2018-10-24 18:57:34,697 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:57:34,706 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:57:34,722 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:57:34,768 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:57:34,768 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:57:34,768 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:57:34,769 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:57:34,769 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:57:34,769 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:57:34,769 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:57:34,769 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:57:34,808 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-24 18:57:34,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-24 18:57:34,815 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:57:34,816 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:57:34,818 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:57:34,824 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:57:34,825 INFO L82 PathProgramCache]: Analyzing trace with hash -112875308, now seen corresponding path program 1 times [2018-10-24 18:57:34,827 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:57:34,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:57:34,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:57:34,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:57:34,880 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:57:34,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:57:35,185 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:57:35,289 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 18:57:35,291 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:57:35,292 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:57:35,292 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:57:35,298 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:57:35,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:57:35,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:57:35,318 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-10-24 18:57:42,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:57:42,600 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-10-24 18:57:42,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:57:42,602 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-10-24 18:57:42,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:57:42,635 INFO L225 Difference]: With dead ends: 2251 [2018-10-24 18:57:42,635 INFO L226 Difference]: Without dead ends: 1474 [2018-10-24 18:57:42,647 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 18:57:42,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-10-24 18:57:42,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-10-24 18:57:42,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-24 18:57:42,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2801 transitions. [2018-10-24 18:57:42,801 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2801 transitions. Word has length 18 [2018-10-24 18:57:42,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:57:42,802 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2801 transitions. [2018-10-24 18:57:42,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:57:42,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2801 transitions. [2018-10-24 18:57:42,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-24 18:57:42,808 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:57:42,808 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:57:42,809 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:57:42,809 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:57:42,809 INFO L82 PathProgramCache]: Analyzing trace with hash -2070134694, now seen corresponding path program 1 times [2018-10-24 18:57:42,810 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:57:42,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:57:42,811 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:57:42,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:57:42,811 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:57:42,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:57:43,149 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:57:43,149 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:57:43,150 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:57:43,150 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:57:43,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:57:43,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:57:43,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:57:43,153 INFO L87 Difference]: Start difference. First operand 1474 states and 2801 transitions. Second operand 6 states. [2018-10-24 18:57:52,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:57:52,552 INFO L93 Difference]: Finished difference Result 4416 states and 8482 transitions. [2018-10-24 18:57:52,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:57:52,554 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2018-10-24 18:57:52,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:57:52,578 INFO L225 Difference]: With dead ends: 4416 [2018-10-24 18:57:52,578 INFO L226 Difference]: Without dead ends: 2948 [2018-10-24 18:57:52,584 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 18:57:52,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2018-10-24 18:57:52,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 2922. [2018-10-24 18:57:52,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2922 states. [2018-10-24 18:57:52,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2922 states to 2922 states and 5419 transitions. [2018-10-24 18:57:52,687 INFO L78 Accepts]: Start accepts. Automaton has 2922 states and 5419 transitions. Word has length 108 [2018-10-24 18:57:52,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:57:52,688 INFO L481 AbstractCegarLoop]: Abstraction has 2922 states and 5419 transitions. [2018-10-24 18:57:52,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:57:52,688 INFO L276 IsEmpty]: Start isEmpty. Operand 2922 states and 5419 transitions. [2018-10-24 18:57:52,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-10-24 18:57:52,696 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:57:52,697 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:57:52,697 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:57:52,697 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:57:52,697 INFO L82 PathProgramCache]: Analyzing trace with hash -197219529, now seen corresponding path program 1 times [2018-10-24 18:57:52,698 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:57:52,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:57:52,699 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:57:52,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:57:52,699 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:57:52,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:57:52,950 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:57:52,951 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:57:52,951 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:57:52,951 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:57:52,952 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:57:52,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:57:52,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:57:52,953 INFO L87 Difference]: Start difference. First operand 2922 states and 5419 transitions. Second operand 6 states. [2018-10-24 18:58:05,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:58:05,151 INFO L93 Difference]: Finished difference Result 11797 states and 22934 transitions. [2018-10-24 18:58:05,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 18:58:05,152 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 109 [2018-10-24 18:58:05,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:58:05,225 INFO L225 Difference]: With dead ends: 11797 [2018-10-24 18:58:05,225 INFO L226 Difference]: Without dead ends: 8881 [2018-10-24 18:58:05,257 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 18:58:05,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8881 states. [2018-10-24 18:58:05,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8881 to 8809. [2018-10-24 18:58:05,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8809 states. [2018-10-24 18:58:05,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8809 states to 8809 states and 14106 transitions. [2018-10-24 18:58:05,540 INFO L78 Accepts]: Start accepts. Automaton has 8809 states and 14106 transitions. Word has length 109 [2018-10-24 18:58:05,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:58:05,540 INFO L481 AbstractCegarLoop]: Abstraction has 8809 states and 14106 transitions. [2018-10-24 18:58:05,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:58:05,541 INFO L276 IsEmpty]: Start isEmpty. Operand 8809 states and 14106 transitions. [2018-10-24 18:58:05,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-10-24 18:58:05,548 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:58:05,549 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:58:05,549 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:58:05,549 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:58:05,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1086867959, now seen corresponding path program 1 times [2018-10-24 18:58:05,550 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:58:05,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:58:05,551 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:58:05,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:58:05,551 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:58:05,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:58:05,890 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:58:06,154 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 22 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:58:06,155 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:58:06,155 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:58:06,156 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 180 with the following transitions: [2018-10-24 18:58:06,159 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1667], [1669], [1672], [1680], [1688], [1696], [1704], [1712], [1720], [1728], [1736], [1744], [1752], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2200], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 18:58:06,266 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:58:06,267 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:58:08,407 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:58:08,409 INFO L272 AbstractInterpreter]: Visited 96 different actions 96 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 18:58:08,423 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:58:08,423 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:58:10,144 INFO L232 lantSequenceWeakener]: Weakened 171 states. On average, predicates are now at 77.39% of their original sizes. [2018-10-24 18:58:10,145 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:58:10,585 INFO L413 sIntCurrentIteration]: We have 178 unified AI predicates [2018-10-24 18:58:10,585 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:58:10,586 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:58:10,586 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-10-24 18:58:10,587 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:58:10,587 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 18:58:10,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 18:58:10,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 18:58:10,588 INFO L87 Difference]: Start difference. First operand 8809 states and 14106 transitions. Second operand 7 states. [2018-10-24 18:58:13,919 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:59:40,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:59:40,064 INFO L93 Difference]: Finished difference Result 18317 states and 29114 transitions. [2018-10-24 18:59:40,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:59:40,065 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 179 [2018-10-24 18:59:40,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:59:40,119 INFO L225 Difference]: With dead ends: 18317 [2018-10-24 18:59:40,120 INFO L226 Difference]: Without dead ends: 9514 [2018-10-24 18:59:40,152 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 179 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:59:40,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9514 states. [2018-10-24 18:59:40,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9514 to 9512. [2018-10-24 18:59:40,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9512 states. [2018-10-24 18:59:40,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9512 states to 9512 states and 14818 transitions. [2018-10-24 18:59:40,410 INFO L78 Accepts]: Start accepts. Automaton has 9512 states and 14818 transitions. Word has length 179 [2018-10-24 18:59:40,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:59:40,411 INFO L481 AbstractCegarLoop]: Abstraction has 9512 states and 14818 transitions. [2018-10-24 18:59:40,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 18:59:40,411 INFO L276 IsEmpty]: Start isEmpty. Operand 9512 states and 14818 transitions. [2018-10-24 18:59:40,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-10-24 18:59:40,423 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:59:40,426 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:59:40,426 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:59:40,426 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:59:40,427 INFO L82 PathProgramCache]: Analyzing trace with hash -139492666, now seen corresponding path program 1 times [2018-10-24 18:59:40,427 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:59:40,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:59:40,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:59:40,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:59:40,428 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:59:40,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:59:41,013 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 18:59:41,669 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 92 proven. 167 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:59:41,669 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:59:41,669 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:59:41,670 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 367 with the following transitions: [2018-10-24 18:59:41,670 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1667], [1669], [1672], [1680], [1688], [1696], [1704], [1712], [1720], [1728], [1736], [1744], [1752], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2200], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 18:59:41,680 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:59:41,680 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:59:54,183 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:59:54,183 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 18:59:54,189 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:59:54,189 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:59:58,682 INFO L232 lantSequenceWeakener]: Weakened 58 states. On average, predicates are now at 78.12% of their original sizes. [2018-10-24 18:59:58,682 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 19:01:04,650 INFO L413 sIntCurrentIteration]: We have 365 unified AI predicates [2018-10-24 19:01:04,651 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 19:01:04,651 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 19:01:04,651 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2018-10-24 19:01:04,651 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:01:04,652 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-24 19:01:04,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-24 19:01:04,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-10-24 19:01:04,653 INFO L87 Difference]: Start difference. First operand 9512 states and 14818 transitions. Second operand 16 states. Received shutdown request... [2018-10-24 19:01:10,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 19:01:10,003 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 19:01:10,009 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 19:01:10,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 07:01:10 BoogieIcfgContainer [2018-10-24 19:01:10,010 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 19:01:10,011 INFO L168 Benchmark]: Toolchain (without parser) took 226531.44 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-10-24 19:01:10,012 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 19:01:10,012 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1722.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-24 19:01:10,014 INFO L168 Benchmark]: Boogie Procedure Inliner took 473.33 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 783.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -959.5 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. [2018-10-24 19:01:10,015 INFO L168 Benchmark]: Boogie Preprocessor took 286.05 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2018-10-24 19:01:10,016 INFO L168 Benchmark]: RCFGBuilder took 8715.26 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 500.5 MB). Peak memory consumption was 500.5 MB. Max. memory is 7.1 GB. [2018-10-24 19:01:10,018 INFO L168 Benchmark]: TraceAbstraction took 215328.96 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 3.0 GB in the end (delta: -1.3 GB). Peak memory consumption was 521.6 MB. Max. memory is 7.1 GB. [2018-10-24 19:01:10,025 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 1722.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 473.33 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 783.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -959.5 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 286.05 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8715.26 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 500.5 MB). Peak memory consumption was 500.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 215328.96 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 3.0 GB in the end (delta: -1.3 GB). Peak memory consumption was 521.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 42]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 42). Cancelled while BasicCegarLoop was constructing difference of abstraction (9512states) and FLOYD_HOARE automaton (currently 9 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (20 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 215.2s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 123.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1171 SDtfs, 7726 SDslu, 662 SDs, 0 SdLazy, 14938 SolverSat, 4406 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 78.9s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 574 GetRequests, 429 SyntacticMatches, 105 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 66.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9512occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 14.7s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.995499372781381 AbsIntWeakeningRatio, 0.10681399631675875 AbsIntAvgWeakeningVarsNumRemoved, 353.1933701657459 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 4 MinimizatonAttempts, 100 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 780 NumberOfCodeBlocks, 780 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 775 ConstructedInterpolants, 0 QuantifiedInterpolants, 1226151 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 146/378 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown