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/Problem15_label11_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:46:09,952 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:46:09,954 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:46:09,969 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:46:09,972 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:46:09,973 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:46:09,974 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:46:09,977 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:46:09,983 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:46:09,984 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:46:09,986 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:46:09,986 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:46:09,987 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:46:09,989 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:46:09,990 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:46:09,996 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:46:09,997 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:46:10,004 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:46:10,006 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:46:10,010 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:46:10,011 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:46:10,012 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:46:10,015 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 21:46:10,030 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 21:46:10,046 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:46:10,046 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:46:10,047 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:46:10,047 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:46:10,047 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:46:10,048 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:46:10,048 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:46:10,048 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:46:10,048 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:46:10,048 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:46:10,048 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:46:10,049 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:46:10,049 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:46:10,050 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:46:10,050 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:46:10,050 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:46:10,050 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:46:10,050 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:46:10,050 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:46:10,051 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:46:10,051 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:46:10,051 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:46:10,051 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:46:10,051 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:46:10,052 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:46:10,052 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:46:10,052 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:46:10,052 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:46:10,052 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:46:10,053 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:46:10,053 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:46:10,053 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:46:10,053 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:46:10,053 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:46:10,112 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:46:10,127 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:46:10,132 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:46:10,133 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:46:10,134 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:46:10,135 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label11_true-unreach-call.c [2018-10-24 21:46:10,209 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9e2e542f8/8f1f0da8df4247d0bdb9b5db571ace44/FLAG23d4c3e7e [2018-10-24 21:46:10,898 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:46:10,899 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label11_true-unreach-call.c [2018-10-24 21:46:10,921 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9e2e542f8/8f1f0da8df4247d0bdb9b5db571ace44/FLAG23d4c3e7e [2018-10-24 21:46:10,941 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9e2e542f8/8f1f0da8df4247d0bdb9b5db571ace44 [2018-10-24 21:46:10,955 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:46:10,957 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:46:10,958 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:46:10,958 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:46:10,963 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:46:10,964 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:46:10" (1/1) ... [2018-10-24 21:46:10,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@769a0e85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:46:10, skipping insertion in model container [2018-10-24 21:46:10,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:46:10" (1/1) ... [2018-10-24 21:46:10,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:46:11,087 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:46:11,935 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:46:11,940 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:46:12,217 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:46:12,240 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:46:12,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:46:12 WrapperNode [2018-10-24 21:46:12,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:46:12,242 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:46:12,242 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:46:12,243 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:46:12,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:46:12" (1/1) ... [2018-10-24 21:46:12,310 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:46:12" (1/1) ... [2018-10-24 21:46:12,664 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:46:12,665 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:46:12,665 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:46:12,665 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:46:12,677 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:46:12" (1/1) ... [2018-10-24 21:46:12,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:46:12" (1/1) ... [2018-10-24 21:46:12,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:46:12" (1/1) ... [2018-10-24 21:46:12,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:46:12" (1/1) ... [2018-10-24 21:46:12,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:46:12" (1/1) ... [2018-10-24 21:46:12,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:46:12" (1/1) ... [2018-10-24 21:46:12,879 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:46:12" (1/1) ... [2018-10-24 21:46:12,922 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:46:12,923 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:46:12,923 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:46:12,924 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:46:12,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:46:12" (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 21:46:12,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:46:12,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:46:12,997 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:46:12,997 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:46:12,997 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:46:12,998 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:46:12,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:46:12,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:46:12,998 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:46:12,998 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:46:23,107 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:46:23,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:46:23 BoogieIcfgContainer [2018-10-24 21:46:23,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:46:23,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:46:23,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:46:23,114 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:46:23,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:46:10" (1/3) ... [2018-10-24 21:46:23,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4213d55c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:46:23, skipping insertion in model container [2018-10-24 21:46:23,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:46:12" (2/3) ... [2018-10-24 21:46:23,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4213d55c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:46:23, skipping insertion in model container [2018-10-24 21:46:23,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:46:23" (3/3) ... [2018-10-24 21:46:23,118 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label11_true-unreach-call.c [2018-10-24 21:46:23,128 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:46:23,138 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:46:23,156 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:46:23,200 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:46:23,200 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:46:23,200 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:46:23,200 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:46:23,201 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:46:23,201 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:46:23,201 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:46:23,201 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:46:23,235 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-24 21:46:23,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-24 21:46:23,246 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:46:23,247 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:46:23,250 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:46:23,256 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:46:23,256 INFO L82 PathProgramCache]: Analyzing trace with hash -383317628, now seen corresponding path program 1 times [2018-10-24 21:46:23,259 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:46:23,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:46:23,312 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:46:23,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:46:23,312 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:46:23,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:46:23,804 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 21:46:23,807 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:46:23,807 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:46:23,808 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:46:23,815 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:46:23,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:46:23,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:46:23,836 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-10-24 21:46:32,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:46:32,167 INFO L93 Difference]: Finished difference Result 1558 states and 2849 transitions. [2018-10-24 21:46:32,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:46:32,171 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2018-10-24 21:46:32,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:46:32,201 INFO L225 Difference]: With dead ends: 1558 [2018-10-24 21:46:32,201 INFO L226 Difference]: Without dead ends: 1114 [2018-10-24 21:46:32,212 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:46:32,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2018-10-24 21:46:32,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 759. [2018-10-24 21:46:32,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 759 states. [2018-10-24 21:46:32,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1355 transitions. [2018-10-24 21:46:32,340 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1355 transitions. Word has length 62 [2018-10-24 21:46:32,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:46:32,341 INFO L481 AbstractCegarLoop]: Abstraction has 759 states and 1355 transitions. [2018-10-24 21:46:32,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:46:32,341 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1355 transitions. [2018-10-24 21:46:32,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-24 21:46:32,350 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:46:32,350 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 21:46:32,350 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:46:32,351 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:46:32,351 INFO L82 PathProgramCache]: Analyzing trace with hash -679699185, now seen corresponding path program 1 times [2018-10-24 21:46:32,351 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:46:32,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:46:32,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:46:32,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:46:32,353 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:46:32,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:46:32,643 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:46:32,643 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:46:32,644 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:46:32,644 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:46:32,646 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:46:32,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:46:32,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:46:32,647 INFO L87 Difference]: Start difference. First operand 759 states and 1355 transitions. Second operand 4 states. [2018-10-24 21:46:38,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:46:38,846 INFO L93 Difference]: Finished difference Result 2755 states and 5131 transitions. [2018-10-24 21:46:38,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:46:38,858 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2018-10-24 21:46:38,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:46:38,880 INFO L225 Difference]: With dead ends: 2755 [2018-10-24 21:46:38,881 INFO L226 Difference]: Without dead ends: 2002 [2018-10-24 21:46:38,890 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:46:38,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2002 states. [2018-10-24 21:46:38,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2002 to 1999. [2018-10-24 21:46:38,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1999 states. [2018-10-24 21:46:38,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1999 states to 1999 states and 3228 transitions. [2018-10-24 21:46:38,990 INFO L78 Accepts]: Start accepts. Automaton has 1999 states and 3228 transitions. Word has length 132 [2018-10-24 21:46:38,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:46:38,991 INFO L481 AbstractCegarLoop]: Abstraction has 1999 states and 3228 transitions. [2018-10-24 21:46:38,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:46:38,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1999 states and 3228 transitions. [2018-10-24 21:46:39,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-10-24 21:46:39,012 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:46:39,013 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:46:39,013 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:46:39,013 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:46:39,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1833978789, now seen corresponding path program 1 times [2018-10-24 21:46:39,014 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:46:39,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:46:39,015 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:46:39,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:46:39,016 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:46:39,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:46:39,281 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:46:39,282 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:46:39,283 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:46:39,284 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:46:39,284 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:46:39,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:46:39,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:46:39,286 INFO L87 Difference]: Start difference. First operand 1999 states and 3228 transitions. Second operand 5 states. [2018-10-24 21:46:48,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:46:48,281 INFO L93 Difference]: Finished difference Result 5997 states and 9873 transitions. [2018-10-24 21:46:48,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:46:48,283 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 179 [2018-10-24 21:46:48,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:46:48,318 INFO L225 Difference]: With dead ends: 5997 [2018-10-24 21:46:48,319 INFO L226 Difference]: Without dead ends: 4004 [2018-10-24 21:46:48,334 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:46:48,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4004 states. [2018-10-24 21:46:48,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4004 to 3960. [2018-10-24 21:46:48,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3960 states. [2018-10-24 21:46:48,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3960 states to 3960 states and 5739 transitions. [2018-10-24 21:46:48,482 INFO L78 Accepts]: Start accepts. Automaton has 3960 states and 5739 transitions. Word has length 179 [2018-10-24 21:46:48,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:46:48,483 INFO L481 AbstractCegarLoop]: Abstraction has 3960 states and 5739 transitions. [2018-10-24 21:46:48,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:46:48,483 INFO L276 IsEmpty]: Start isEmpty. Operand 3960 states and 5739 transitions. [2018-10-24 21:46:48,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2018-10-24 21:46:48,499 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:46:48,499 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:46:48,500 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:46:48,500 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:46:48,500 INFO L82 PathProgramCache]: Analyzing trace with hash 2147437264, now seen corresponding path program 1 times [2018-10-24 21:46:48,500 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:46:48,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:46:48,501 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:46:48,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:46:48,502 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:46:48,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:46:49,831 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 324 proven. 78 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-10-24 21:46:49,832 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:46:49,832 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:46:49,833 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 444 with the following transitions: [2018-10-24 21:46:49,836 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [469], [471], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [710], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 21:46:49,951 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:46:49,951 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:46:55,016 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:46:55,417 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:46:55,418 INFO L272 AbstractInterpreter]: Visited 207 different actions 207 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 21:46:55,462 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:46:55,462 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:46:59,146 INFO L232 lantSequenceWeakener]: Weakened 432 states. On average, predicates are now at 77.8% of their original sizes. [2018-10-24 21:46:59,146 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:46:59,802 INFO L413 sIntCurrentIteration]: We have 442 unified AI predicates [2018-10-24 21:46:59,802 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:46:59,803 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:46:59,804 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2018-10-24 21:46:59,804 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:46:59,805 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 21:46:59,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 21:46:59,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:46:59,806 INFO L87 Difference]: Start difference. First operand 3960 states and 5739 transitions. Second operand 8 states. [2018-10-24 21:47:35,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:47:35,124 INFO L93 Difference]: Finished difference Result 8224 states and 11810 transitions. [2018-10-24 21:47:35,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:47:35,124 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 443 [2018-10-24 21:47:35,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:47:35,146 INFO L225 Difference]: With dead ends: 8224 [2018-10-24 21:47:35,146 INFO L226 Difference]: Without dead ends: 4270 [2018-10-24 21:47:35,164 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 444 GetRequests, 436 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 21:47:35,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4270 states. [2018-10-24 21:47:35,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4270 to 4268. [2018-10-24 21:47:35,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4268 states. [2018-10-24 21:47:35,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4268 states to 4268 states and 6056 transitions. [2018-10-24 21:47:35,284 INFO L78 Accepts]: Start accepts. Automaton has 4268 states and 6056 transitions. Word has length 443 [2018-10-24 21:47:35,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:47:35,285 INFO L481 AbstractCegarLoop]: Abstraction has 4268 states and 6056 transitions. [2018-10-24 21:47:35,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 21:47:35,285 INFO L276 IsEmpty]: Start isEmpty. Operand 4268 states and 6056 transitions. [2018-10-24 21:47:35,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2018-10-24 21:47:35,307 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:47:35,307 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:47:35,308 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:47:35,308 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:47:35,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1235760953, now seen corresponding path program 1 times [2018-10-24 21:47:35,309 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:47:35,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:47:35,310 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:47:35,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:47:35,310 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:47:35,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:47:36,345 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 249 proven. 80 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-10-24 21:47:36,346 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:47:36,346 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:47:36,347 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 518 with the following transitions: [2018-10-24 21:47:36,347 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [469], [471], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [710], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 21:47:36,359 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:47:36,359 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:47:41,463 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:48:04,018 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:48:04,018 INFO L272 AbstractInterpreter]: Visited 284 different actions 840 times. Merged at 5 different actions 10 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 21:48:04,030 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:48:04,030 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:48:09,742 INFO L232 lantSequenceWeakener]: Weakened 29 states. On average, predicates are now at 78.21% of their original sizes. [2018-10-24 21:48:09,742 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:49:56,042 INFO L413 sIntCurrentIteration]: We have 516 unified AI predicates [2018-10-24 21:49:56,043 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:49:56,043 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:49:56,044 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [9] total 30 [2018-10-24 21:49:56,044 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:49:56,045 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-24 21:49:56,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-24 21:49:56,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2018-10-24 21:49:56,046 INFO L87 Difference]: Start difference. First operand 4268 states and 6056 transitions. Second operand 23 states. Received shutdown request... [2018-10-24 21:50:10,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 21:50:10,741 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:50:10,746 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:50:10,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:50:10 BoogieIcfgContainer [2018-10-24 21:50:10,747 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:50:10,748 INFO L168 Benchmark]: Toolchain (without parser) took 239791.64 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 536.5 MB. Max. memory is 7.1 GB. [2018-10-24 21:50:10,750 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:50:10,750 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1283.45 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: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2018-10-24 21:50:10,751 INFO L168 Benchmark]: Boogie Procedure Inliner took 422.20 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 759.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -875.8 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. [2018-10-24 21:50:10,752 INFO L168 Benchmark]: Boogie Preprocessor took 258.05 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: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. [2018-10-24 21:50:10,753 INFO L168 Benchmark]: RCFGBuilder took 10185.58 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 292.0 MB). Peak memory consumption was 292.0 MB. Max. memory is 7.1 GB. [2018-10-24 21:50:10,754 INFO L168 Benchmark]: TraceAbstraction took 227637.04 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.9 GB in the beginning and 3.2 GB in the end (delta: -1.3 GB). Peak memory consumption was 227.4 MB. Max. memory is 7.1 GB. [2018-10-24 21:50:10,759 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1283.45 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: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 422.20 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 759.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -875.8 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 258.05 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: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10185.58 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 292.0 MB). Peak memory consumption was 292.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 227637.04 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.9 GB in the beginning and 3.2 GB in the end (delta: -1.3 GB). Peak memory consumption was 227.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 172]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 172). Cancelled while BasicCegarLoop was constructing difference of abstraction (4268states) and FLOYD_HOARE automaton (currently 9 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (33 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 227.5s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 73.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1008 SDtfs, 3758 SDslu, 695 SDs, 0 SdLazy, 5616 SolverSat, 1699 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 40.2s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 985 GetRequests, 853 SyntacticMatches, 88 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 107.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4268occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 33.3s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9972712625941725 AbsIntWeakeningRatio, 0.06680584551148225 AbsIntAvgWeakeningVarsNumRemoved, 628.7098121085595 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 404 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 1333 NumberOfCodeBlocks, 1333 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 1328 ConstructedInterpolants, 0 QuantifiedInterpolants, 2736286 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 804/962 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown