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/Problem12_label30_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 23:40:38,988 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 23:40:38,991 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 23:40:39,004 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 23:40:39,004 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 23:40:39,005 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 23:40:39,007 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 23:40:39,010 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 23:40:39,013 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 23:40:39,017 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 23:40:39,018 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 23:40:39,019 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 23:40:39,019 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 23:40:39,022 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 23:40:39,024 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 23:40:39,024 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 23:40:39,031 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 23:40:39,032 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 23:40:39,038 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 23:40:39,040 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 23:40:39,041 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 23:40:39,045 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 23:40:39,047 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-26 23:40:39,053 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 23:40:39,053 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 23:40:39,054 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 23:40:39,055 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 23:40:39,055 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 [2018-10-26 23:40:39,074 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 23:40:39,074 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 23:40:39,075 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 23:40:39,075 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 23:40:39,075 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 23:40:39,075 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 23:40:39,079 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 23:40:39,079 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 23:40:39,079 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-26 23:40:39,079 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 23:40:39,079 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 23:40:39,079 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 23:40:39,081 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 23:40:39,081 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 23:40:39,082 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 23:40:39,082 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 23:40:39,082 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 23:40:39,082 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 23:40:39,082 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 23:40:39,083 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 23:40:39,083 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 23:40:39,083 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 23:40:39,083 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 23:40:39,083 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 23:40:39,084 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 23:40:39,086 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 23:40:39,086 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 23:40:39,086 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 23:40:39,086 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 23:40:39,086 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 23:40:39,087 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 23:40:39,087 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 23:40:39,088 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 23:40:39,088 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-26 23:40:39,141 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 23:40:39,154 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 23:40:39,158 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 23:40:39,159 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 23:40:39,160 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 23:40:39,161 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label30_false-unreach-call.c [2018-10-26 23:40:39,229 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/07ffed046/86096262416444088214bd14a3fb4df1/FLAG635032a32 [2018-10-26 23:40:39,962 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 23:40:39,962 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label30_false-unreach-call.c [2018-10-26 23:40:39,992 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/07ffed046/86096262416444088214bd14a3fb4df1/FLAG635032a32 [2018-10-26 23:40:40,010 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/07ffed046/86096262416444088214bd14a3fb4df1 [2018-10-26 23:40:40,022 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 23:40:40,025 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 23:40:40,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 23:40:40,026 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 23:40:40,034 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 23:40:40,035 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:40:40" (1/1) ... [2018-10-26 23:40:40,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18e44861 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:40:40, skipping insertion in model container [2018-10-26 23:40:40,038 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:40:40" (1/1) ... [2018-10-26 23:40:40,050 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 23:40:40,214 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 23:40:41,506 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:40:41,512 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 23:40:42,150 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:40:42,182 INFO L193 MainTranslator]: Completed translation [2018-10-26 23:40:42,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:40:42 WrapperNode [2018-10-26 23:40:42,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 23:40:42,185 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 23:40:42,185 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 23:40:42,185 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 23:40:42,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:40:42" (1/1) ... [2018-10-26 23:40:42,260 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:40:42" (1/1) ... [2018-10-26 23:40:42,679 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 23:40:42,679 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 23:40:42,680 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 23:40:42,680 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 23:40:42,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:40:42" (1/1) ... [2018-10-26 23:40:42,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:40:42" (1/1) ... [2018-10-26 23:40:42,720 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:40:42" (1/1) ... [2018-10-26 23:40:42,721 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:40:42" (1/1) ... [2018-10-26 23:40:42,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:40:42" (1/1) ... [2018-10-26 23:40:42,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:40:42" (1/1) ... [2018-10-26 23:40:42,912 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:40:42" (1/1) ... [2018-10-26 23:40:42,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 23:40:42,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 23:40:42,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 23:40:42,964 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 23:40:42,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:40:42" (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 [2018-10-26 23:40:43,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 23:40:43,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 23:40:43,037 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-26 23:40:43,038 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-26 23:40:43,038 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-26 23:40:43,038 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-26 23:40:43,038 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-26 23:40:43,039 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-26 23:40:43,039 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-26 23:40:43,039 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-26 23:40:43,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 23:40:43,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 23:40:43,040 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 23:40:43,041 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 23:40:56,379 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 23:40:56,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:40:56 BoogieIcfgContainer [2018-10-26 23:40:56,380 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 23:40:56,382 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 23:40:56,382 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 23:40:56,385 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 23:40:56,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:40:40" (1/3) ... [2018-10-26 23:40:56,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63dd3223 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:40:56, skipping insertion in model container [2018-10-26 23:40:56,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:40:42" (2/3) ... [2018-10-26 23:40:56,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63dd3223 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:40:56, skipping insertion in model container [2018-10-26 23:40:56,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:40:56" (3/3) ... [2018-10-26 23:40:56,389 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label30_false-unreach-call.c [2018-10-26 23:40:56,398 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 23:40:56,409 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 23:40:56,426 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 23:40:56,472 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 23:40:56,472 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 23:40:56,473 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 23:40:56,473 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 23:40:56,473 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 23:40:56,473 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 23:40:56,473 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 23:40:56,473 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 23:40:56,522 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-26 23:40:56,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-26 23:40:56,531 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:40:56,532 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] [2018-10-26 23:40:56,535 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:40:56,540 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:40:56,540 INFO L82 PathProgramCache]: Analyzing trace with hash -145223636, now seen corresponding path program 1 times [2018-10-26 23:40:56,542 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:40:56,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:40:56,592 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:40:56,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:40:56,592 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:40:56,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:40:56,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:40:56,995 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:40:56,995 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 23:40:56,996 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:40:57,012 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 23:40:57,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 23:40:57,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:40:57,035 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 4 states. [2018-10-26 23:41:09,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:41:09,807 INFO L93 Difference]: Finished difference Result 3234 states and 6255 transitions. [2018-10-26 23:41:09,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 23:41:09,811 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2018-10-26 23:41:09,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:41:09,859 INFO L225 Difference]: With dead ends: 3234 [2018-10-26 23:41:09,859 INFO L226 Difference]: Without dead ends: 2388 [2018-10-26 23:41:09,869 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 [2018-10-26 23:41:09,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2018-10-26 23:41:10,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 2388. [2018-10-26 23:41:10,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2388 states. [2018-10-26 23:41:10,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2388 states to 2388 states and 3845 transitions. [2018-10-26 23:41:10,053 INFO L78 Accepts]: Start accepts. Automaton has 2388 states and 3845 transitions. Word has length 32 [2018-10-26 23:41:10,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:41:10,054 INFO L481 AbstractCegarLoop]: Abstraction has 2388 states and 3845 transitions. [2018-10-26 23:41:10,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 23:41:10,054 INFO L276 IsEmpty]: Start isEmpty. Operand 2388 states and 3845 transitions. [2018-10-26 23:41:10,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-26 23:41:10,064 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:41:10,066 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:41:10,066 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:41:10,067 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:41:10,067 INFO L82 PathProgramCache]: Analyzing trace with hash 552295319, now seen corresponding path program 1 times [2018-10-26 23:41:10,067 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:41:10,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:41:10,068 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:41:10,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:41:10,069 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:41:10,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:41:10,502 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:41:10,503 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:41:10,503 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 23:41:10,503 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:41:10,506 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 23:41:10,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 23:41:10,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:41:10,509 INFO L87 Difference]: Start difference. First operand 2388 states and 3845 transitions. Second operand 6 states. [2018-10-26 23:41:26,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:41:26,569 INFO L93 Difference]: Finished difference Result 9463 states and 15573 transitions. [2018-10-26 23:41:26,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 23:41:26,570 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2018-10-26 23:41:26,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:41:26,616 INFO L225 Difference]: With dead ends: 9463 [2018-10-26 23:41:26,616 INFO L226 Difference]: Without dead ends: 7081 [2018-10-26 23:41:26,632 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-26 23:41:26,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7081 states. [2018-10-26 23:41:26,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7081 to 7037. [2018-10-26 23:41:26,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7037 states. [2018-10-26 23:41:26,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7037 states to 7037 states and 10229 transitions. [2018-10-26 23:41:26,832 INFO L78 Accepts]: Start accepts. Automaton has 7037 states and 10229 transitions. Word has length 113 [2018-10-26 23:41:26,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:41:26,832 INFO L481 AbstractCegarLoop]: Abstraction has 7037 states and 10229 transitions. [2018-10-26 23:41:26,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 23:41:26,833 INFO L276 IsEmpty]: Start isEmpty. Operand 7037 states and 10229 transitions. [2018-10-26 23:41:26,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-26 23:41:26,837 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:41:26,837 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:41:26,838 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:41:26,838 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:41:26,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1059149049, now seen corresponding path program 1 times [2018-10-26 23:41:26,838 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:41:26,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:41:26,840 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:41:26,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:41:26,840 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:41:26,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:41:27,081 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:41:27,081 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:41:27,082 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 23:41:27,082 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:41:27,082 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 23:41:27,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 23:41:27,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:41:27,083 INFO L87 Difference]: Start difference. First operand 7037 states and 10229 transitions. Second operand 6 states. [2018-10-26 23:41:38,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:41:38,023 INFO L93 Difference]: Finished difference Result 23489 states and 35291 transitions. [2018-10-26 23:41:38,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 23:41:38,026 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2018-10-26 23:41:38,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:41:38,128 INFO L225 Difference]: With dead ends: 23489 [2018-10-26 23:41:38,129 INFO L226 Difference]: Without dead ends: 16458 [2018-10-26 23:41:38,174 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 [2018-10-26 23:41:38,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16458 states. [2018-10-26 23:41:38,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16458 to 16369. [2018-10-26 23:41:38,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16369 states. [2018-10-26 23:41:38,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16369 states to 16369 states and 22454 transitions. [2018-10-26 23:41:38,619 INFO L78 Accepts]: Start accepts. Automaton has 16369 states and 22454 transitions. Word has length 121 [2018-10-26 23:41:38,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:41:38,619 INFO L481 AbstractCegarLoop]: Abstraction has 16369 states and 22454 transitions. [2018-10-26 23:41:38,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 23:41:38,620 INFO L276 IsEmpty]: Start isEmpty. Operand 16369 states and 22454 transitions. [2018-10-26 23:41:38,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-26 23:41:38,626 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:41:38,627 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:41:38,628 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:41:38,628 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:41:38,629 INFO L82 PathProgramCache]: Analyzing trace with hash -128929438, now seen corresponding path program 1 times [2018-10-26 23:41:38,629 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:41:38,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:41:38,631 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:41:38,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:41:38,631 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:41:38,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:41:38,987 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-26 23:41:39,557 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:41:39,557 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:41:39,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 23:41:39,558 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:41:39,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 23:41:39,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 23:41:39,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 23:41:39,559 INFO L87 Difference]: Start difference. First operand 16369 states and 22454 transitions. Second operand 6 states. [2018-10-26 23:41:52,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:41:52,664 INFO L93 Difference]: Finished difference Result 51805 states and 75181 transitions. [2018-10-26 23:41:52,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 23:41:52,665 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2018-10-26 23:41:52,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:41:52,863 INFO L225 Difference]: With dead ends: 51805 [2018-10-26 23:41:52,864 INFO L226 Difference]: Without dead ends: 35442 [2018-10-26 23:41:52,956 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-26 23:41:52,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35442 states. [2018-10-26 23:41:53,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35442 to 35319. [2018-10-26 23:41:53,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35319 states. [2018-10-26 23:41:53,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35319 states to 35319 states and 49477 transitions. [2018-10-26 23:41:53,879 INFO L78 Accepts]: Start accepts. Automaton has 35319 states and 49477 transitions. Word has length 146 [2018-10-26 23:41:53,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:41:53,879 INFO L481 AbstractCegarLoop]: Abstraction has 35319 states and 49477 transitions. [2018-10-26 23:41:53,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 23:41:53,882 INFO L276 IsEmpty]: Start isEmpty. Operand 35319 states and 49477 transitions. [2018-10-26 23:41:53,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-10-26 23:41:53,895 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:41:53,895 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 23:41:53,896 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:41:53,896 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:41:53,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1800636461, now seen corresponding path program 1 times [2018-10-26 23:41:53,896 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:41:53,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:41:53,897 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:41:53,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:41:53,898 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:41:53,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:41:54,216 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-26 23:41:54,629 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 50 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-26 23:41:54,630 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:41:54,630 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 23:41:54,631 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 210 with the following transitions: [2018-10-26 23:41:54,640 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2023], [2025], [2028], [2036], [2044], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2388], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2480], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-26 23:41:54,738 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 23:41:54,738 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 23:41:58,297 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-26 23:41:58,298 INFO L272 AbstractInterpreter]: Visited 105 different actions 105 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-26 23:41:58,335 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:41:58,335 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-26 23:42:00,453 INFO L227 lantSequenceWeakener]: Weakened 201 states. On average, predicates are now at 75.33% of their original sizes. [2018-10-26 23:42:00,454 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-26 23:42:01,038 INFO L415 sIntCurrentIteration]: We unified 208 AI predicates to 208 [2018-10-26 23:42:01,038 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-26 23:42:01,039 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:42:01,039 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-10-26 23:42:01,040 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:42:01,040 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 23:42:01,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 23:42:01,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-26 23:42:01,041 INFO L87 Difference]: Start difference. First operand 35319 states and 49477 transitions. Second operand 8 states. [2018-10-26 23:42:06,044 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-26 23:43:45,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:43:45,067 INFO L93 Difference]: Finished difference Result 71402 states and 99937 transitions. [2018-10-26 23:43:45,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 23:43:45,067 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 209 [2018-10-26 23:43:45,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:43:45,183 INFO L225 Difference]: With dead ends: 71402 [2018-10-26 23:43:45,183 INFO L226 Difference]: Without dead ends: 36089 [2018-10-26 23:43:45,256 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 210 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-26 23:43:45,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36089 states. [2018-10-26 23:43:45,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36089 to 36087. [2018-10-26 23:43:45,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36087 states. [2018-10-26 23:43:46,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36087 states to 36087 states and 50261 transitions. [2018-10-26 23:43:46,029 INFO L78 Accepts]: Start accepts. Automaton has 36087 states and 50261 transitions. Word has length 209 [2018-10-26 23:43:46,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:43:46,029 INFO L481 AbstractCegarLoop]: Abstraction has 36087 states and 50261 transitions. [2018-10-26 23:43:46,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 23:43:46,030 INFO L276 IsEmpty]: Start isEmpty. Operand 36087 states and 50261 transitions. [2018-10-26 23:43:46,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-26 23:43:46,040 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:43:46,041 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 23:43:46,041 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:43:46,042 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:43:46,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1958314628, now seen corresponding path program 1 times [2018-10-26 23:43:46,042 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:43:46,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:43:46,045 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:43:46,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:43:46,045 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:43:46,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:43:46,403 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-26 23:43:47,090 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 51 proven. 6 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-10-26 23:43:47,090 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:43:47,090 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 23:43:47,091 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 223 with the following transitions: [2018-10-26 23:43:47,091 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2023], [2025], [2028], [2036], [2044], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2384], [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], [2536], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-26 23:43:47,101 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 23:43:47,101 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 23:43:54,940 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-26 23:43:54,940 INFO L272 AbstractInterpreter]: Visited 122 different actions 237 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-26 23:43:54,948 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:43:54,948 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-26 23:43:57,479 INFO L227 lantSequenceWeakener]: Weakened 49 states. On average, predicates are now at 76.36% of their original sizes. [2018-10-26 23:43:57,479 INFO L413 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-26 23:44:21,406 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 23:44:21,412 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 23:44:21,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 11:44:21 BoogieIcfgContainer [2018-10-26 23:44:21,413 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 23:44:21,414 INFO L168 Benchmark]: Toolchain (without parser) took 221391.59 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-26 23:44:21,415 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 23:44:21,416 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2157.97 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-26 23:44:21,417 INFO L168 Benchmark]: Boogie Procedure Inliner took 494.66 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 820.0 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 69.2 MB. Max. memory is 7.1 GB. [2018-10-26 23:44:21,418 INFO L168 Benchmark]: Boogie Preprocessor took 283.84 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 35.2 MB). Peak memory consumption was 35.2 MB. Max. memory is 7.1 GB. [2018-10-26 23:44:21,430 INFO L168 Benchmark]: RCFGBuilder took 13417.05 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 164.6 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -154.2 MB). Peak memory consumption was 660.0 MB. Max. memory is 7.1 GB. [2018-10-26 23:44:21,431 INFO L168 Benchmark]: TraceAbstraction took 205031.66 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.6 GB). Free memory was 2.4 GB in the beginning and 2.8 GB in the end (delta: -381.9 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-26 23:44:21,439 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2157.97 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 494.66 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 820.0 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 69.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 283.84 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 35.2 MB). Peak memory consumption was 35.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13417.05 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 164.6 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -154.2 MB). Peak memory consumption was 660.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 205031.66 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.6 GB). Free memory was 2.4 GB in the beginning and 2.8 GB in the end (delta: -381.9 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 87). Cancelled while BasicCegarLoop was analyzing trace of length 223 with TraceHistMax 3,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 11 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 204.9s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 157.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1629 SDtfs, 15630 SDslu, 769 SDs, 0 SdLazy, 25138 SolverSat, 6793 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 112.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 246 GetRequests, 212 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36087occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 11.5s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9951156535771917 AbsIntWeakeningRatio, 0.1258741258741259 AbsIntAvgWeakeningVarsNumRemoved, 776.2727272727273 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 258 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 621 NumberOfCodeBlocks, 621 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 616 ConstructedInterpolants, 0 QuantifiedInterpolants, 473246 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 130/202 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown