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_label57_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 03:17:04,878 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 03:17:04,881 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 03:17:04,893 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 03:17:04,894 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 03:17:04,895 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 03:17:04,896 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 03:17:04,898 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 03:17:04,900 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 03:17:04,901 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 03:17:04,902 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 03:17:04,902 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 03:17:04,903 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 03:17:04,904 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 03:17:04,906 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 03:17:04,906 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 03:17:04,907 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 03:17:04,909 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 03:17:04,911 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 03:17:04,913 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 03:17:04,914 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 03:17:04,915 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 03:17:04,918 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-27 03:17:04,928 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 [2018-10-27 03:17:04,945 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 03:17:04,945 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 03:17:04,946 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 03:17:04,947 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 03:17:04,947 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 03:17:04,947 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 03:17:04,948 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 03:17:04,948 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 03:17:04,948 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 03:17:04,948 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 03:17:04,949 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 03:17:04,949 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 03:17:04,950 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 03:17:04,950 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 03:17:04,950 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 03:17:04,950 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 03:17:04,951 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 03:17:04,951 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 03:17:04,951 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 03:17:04,951 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 03:17:04,952 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 03:17:04,952 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 03:17:04,952 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 03:17:04,952 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 03:17:04,953 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 03:17:04,953 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 03:17:04,953 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 03:17:04,953 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 03:17:04,954 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 03:17:04,954 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 03:17:04,954 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 03:17:04,954 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 03:17:04,954 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 03:17:04,955 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 03:17:05,002 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 03:17:05,020 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 03:17:05,024 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 03:17:05,026 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 03:17:05,026 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 03:17:05,027 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label57_true-unreach-call.c [2018-10-27 03:17:05,093 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b341d6d21/a2dfda2b120e46148fb6b1bfbc4da2d9/FLAGcd4b7cae7 [2018-10-27 03:17:05,818 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 03:17:05,819 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label57_true-unreach-call.c [2018-10-27 03:17:05,846 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b341d6d21/a2dfda2b120e46148fb6b1bfbc4da2d9/FLAGcd4b7cae7 [2018-10-27 03:17:05,867 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b341d6d21/a2dfda2b120e46148fb6b1bfbc4da2d9 [2018-10-27 03:17:05,877 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 03:17:05,879 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 03:17:05,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 03:17:05,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 03:17:05,884 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 03:17:05,885 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:17:05" (1/1) ... [2018-10-27 03:17:05,889 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f32220e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:17:05, skipping insertion in model container [2018-10-27 03:17:05,889 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:17:05" (1/1) ... [2018-10-27 03:17:05,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 03:17:05,994 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 03:17:06,809 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:17:06,814 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 03:17:07,145 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:17:07,169 INFO L193 MainTranslator]: Completed translation [2018-10-27 03:17:07,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:17:07 WrapperNode [2018-10-27 03:17:07,169 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 03:17:07,171 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 03:17:07,171 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 03:17:07,171 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 03:17:07,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:17:07" (1/1) ... [2018-10-27 03:17:07,226 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:17:07" (1/1) ... [2018-10-27 03:17:07,598 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 03:17:07,598 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 03:17:07,598 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 03:17:07,599 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 03:17:07,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:17:07" (1/1) ... [2018-10-27 03:17:07,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:17:07" (1/1) ... [2018-10-27 03:17:07,627 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:17:07" (1/1) ... [2018-10-27 03:17:07,628 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:17:07" (1/1) ... [2018-10-27 03:17:07,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:17:07" (1/1) ... [2018-10-27 03:17:07,730 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:17:07" (1/1) ... [2018-10-27 03:17:07,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:17:07" (1/1) ... [2018-10-27 03:17:07,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 03:17:07,850 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 03:17:07,851 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 03:17:07,851 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 03:17:07,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:17:07" (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 [2018-10-27 03:17:07,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 03:17:07,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 03:17:07,930 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 03:17:07,930 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 03:17:07,930 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 03:17:07,930 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 03:17:07,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 03:17:07,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 03:17:07,931 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 03:17:07,931 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 03:17:16,377 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 03:17:16,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:17:16 BoogieIcfgContainer [2018-10-27 03:17:16,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 03:17:16,379 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 03:17:16,379 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 03:17:16,383 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 03:17:16,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:17:05" (1/3) ... [2018-10-27 03:17:16,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72afb927 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:17:16, skipping insertion in model container [2018-10-27 03:17:16,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:17:07" (2/3) ... [2018-10-27 03:17:16,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72afb927 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:17:16, skipping insertion in model container [2018-10-27 03:17:16,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:17:16" (3/3) ... [2018-10-27 03:17:16,387 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label57_true-unreach-call.c [2018-10-27 03:17:16,396 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 03:17:16,405 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 03:17:16,423 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 03:17:16,465 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 03:17:16,466 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 03:17:16,466 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 03:17:16,466 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 03:17:16,466 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 03:17:16,466 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 03:17:16,467 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 03:17:16,467 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 03:17:16,512 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-27 03:17:16,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-27 03:17:16,521 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:17:16,522 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] [2018-10-27 03:17:16,525 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:17:16,530 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:17:16,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1926433044, now seen corresponding path program 1 times [2018-10-27 03:17:16,533 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:17:16,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:17:16,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:17:16,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:17:16,583 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:17:16,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:17:17,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:17:17,072 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:17:17,072 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 03:17:17,073 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:17:17,079 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 03:17:17,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 03:17:17,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 03:17:17,099 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-10-27 03:17:26,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:17:26,067 INFO L93 Difference]: Finished difference Result 1550 states and 2835 transitions. [2018-10-27 03:17:26,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 03:17:26,069 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2018-10-27 03:17:26,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:17:26,117 INFO L225 Difference]: With dead ends: 1550 [2018-10-27 03:17:26,117 INFO L226 Difference]: Without dead ends: 1106 [2018-10-27 03:17:26,136 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 03:17:26,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2018-10-27 03:17:26,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 762. [2018-10-27 03:17:26,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2018-10-27 03:17:26,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1263 transitions. [2018-10-27 03:17:26,318 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1263 transitions. Word has length 48 [2018-10-27 03:17:26,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:17:26,319 INFO L481 AbstractCegarLoop]: Abstraction has 762 states and 1263 transitions. [2018-10-27 03:17:26,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 03:17:26,320 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1263 transitions. [2018-10-27 03:17:26,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-27 03:17:26,330 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:17:26,330 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:17:26,334 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:17:26,334 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:17:26,335 INFO L82 PathProgramCache]: Analyzing trace with hash -45753950, now seen corresponding path program 1 times [2018-10-27 03:17:26,335 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:17:26,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:17:26,336 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:17:26,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:17:26,336 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:17:26,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:17:26,791 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:17:26,792 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:17:26,793 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 03:17:26,793 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:17:26,796 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 03:17:26,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 03:17:26,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 03:17:26,797 INFO L87 Difference]: Start difference. First operand 762 states and 1263 transitions. Second operand 5 states. [2018-10-27 03:17:35,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:17:35,067 INFO L93 Difference]: Finished difference Result 2245 states and 3758 transitions. [2018-10-27 03:17:35,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 03:17:35,077 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2018-10-27 03:17:35,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:17:35,090 INFO L225 Difference]: With dead ends: 2245 [2018-10-27 03:17:35,091 INFO L226 Difference]: Without dead ends: 1489 [2018-10-27 03:17:35,095 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 03:17:35,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2018-10-27 03:17:35,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1457. [2018-10-27 03:17:35,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1457 states. [2018-10-27 03:17:35,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 2152 transitions. [2018-10-27 03:17:35,169 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 2152 transitions. Word has length 121 [2018-10-27 03:17:35,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:17:35,170 INFO L481 AbstractCegarLoop]: Abstraction has 1457 states and 2152 transitions. [2018-10-27 03:17:35,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 03:17:35,170 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 2152 transitions. [2018-10-27 03:17:35,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-10-27 03:17:35,177 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:17:35,182 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:17:35,182 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:17:35,183 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:17:35,183 INFO L82 PathProgramCache]: Analyzing trace with hash 935470738, now seen corresponding path program 1 times [2018-10-27 03:17:35,183 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:17:35,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:17:35,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:17:35,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:17:35,184 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:17:35,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:17:35,435 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:17:35,436 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:17:35,436 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 03:17:35,436 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:17:35,437 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 03:17:35,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 03:17:35,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 03:17:35,437 INFO L87 Difference]: Start difference. First operand 1457 states and 2152 transitions. Second operand 4 states. [2018-10-27 03:17:41,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:17:41,598 INFO L93 Difference]: Finished difference Result 5394 states and 8283 transitions. [2018-10-27 03:17:41,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 03:17:41,600 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2018-10-27 03:17:41,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:17:41,627 INFO L225 Difference]: With dead ends: 5394 [2018-10-27 03:17:41,628 INFO L226 Difference]: Without dead ends: 3943 [2018-10-27 03:17:41,642 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 [2018-10-27 03:17:41,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3943 states. [2018-10-27 03:17:41,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3943 to 3943. [2018-10-27 03:17:41,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3943 states. [2018-10-27 03:17:41,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3943 states to 3943 states and 5430 transitions. [2018-10-27 03:17:41,757 INFO L78 Accepts]: Start accepts. Automaton has 3943 states and 5430 transitions. Word has length 129 [2018-10-27 03:17:41,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:17:41,758 INFO L481 AbstractCegarLoop]: Abstraction has 3943 states and 5430 transitions. [2018-10-27 03:17:41,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 03:17:41,758 INFO L276 IsEmpty]: Start isEmpty. Operand 3943 states and 5430 transitions. [2018-10-27 03:17:41,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-10-27 03:17:41,764 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:17:41,764 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 03:17:41,765 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:17:41,765 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:17:41,765 INFO L82 PathProgramCache]: Analyzing trace with hash 107667736, now seen corresponding path program 1 times [2018-10-27 03:17:41,765 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:17:41,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:17:41,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:17:41,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:17:41,767 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:17:41,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:17:42,030 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 03:17:42,445 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 82 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 03:17:42,446 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:17:42,446 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:17:42,447 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 216 with the following transitions: [2018-10-27 03:17:42,449 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], [357], [359], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [613], [614], [618], [622], [626], [630], [633], [638], [640], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 03:17:42,532 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:17:42,533 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:17:43,976 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 03:17:44,506 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 03:17:44,508 INFO L272 AbstractInterpreter]: Visited 90 different actions 90 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 03:17:44,549 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:17:44,549 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 03:17:46,775 INFO L227 lantSequenceWeakener]: Weakened 205 states. On average, predicates are now at 78.03% of their original sizes. [2018-10-27 03:17:46,775 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 03:17:47,211 INFO L415 sIntCurrentIteration]: We unified 214 AI predicates to 214 [2018-10-27 03:17:47,211 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 03:17:47,212 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 03:17:47,213 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-27 03:17:47,213 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:17:47,214 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 03:17:47,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 03:17:47,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 03:17:47,215 INFO L87 Difference]: Start difference. First operand 3943 states and 5430 transitions. Second operand 7 states. [2018-10-27 03:18:55,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:18:55,822 INFO L93 Difference]: Finished difference Result 8190 states and 11236 transitions. [2018-10-27 03:18:55,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:18:55,822 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 215 [2018-10-27 03:18:55,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:18:55,846 INFO L225 Difference]: With dead ends: 8190 [2018-10-27 03:18:55,846 INFO L226 Difference]: Without dead ends: 4253 [2018-10-27 03:18:55,862 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 215 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-27 03:18:55,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4253 states. [2018-10-27 03:18:55,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4253 to 4251. [2018-10-27 03:18:55,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4251 states. [2018-10-27 03:18:55,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4251 states to 4251 states and 5746 transitions. [2018-10-27 03:18:55,978 INFO L78 Accepts]: Start accepts. Automaton has 4251 states and 5746 transitions. Word has length 215 [2018-10-27 03:18:55,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:18:55,979 INFO L481 AbstractCegarLoop]: Abstraction has 4251 states and 5746 transitions. [2018-10-27 03:18:55,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 03:18:55,979 INFO L276 IsEmpty]: Start isEmpty. Operand 4251 states and 5746 transitions. [2018-10-27 03:18:55,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2018-10-27 03:18:55,988 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:18:55,988 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:18:55,989 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:18:55,989 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:18:55,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1560998385, now seen corresponding path program 1 times [2018-10-27 03:18:55,989 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:18:55,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:18:55,990 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:18:55,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:18:55,991 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:18:56,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:18:56,342 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 03:18:56,518 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 129 proven. 221 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-27 03:18:56,518 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:18:56,518 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:18:56,518 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 312 with the following transitions: [2018-10-27 03:18:56,519 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], [357], [359], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [613], [614], [618], [622], [626], [630], [633], [638], [640], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 03:18:56,526 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:18:56,526 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:18:57,672 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 03:19:02,812 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 03:19:02,813 INFO L272 AbstractInterpreter]: Visited 105 different actions 302 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 03:19:02,819 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:19:02,819 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 03:19:06,436 INFO L227 lantSequenceWeakener]: Weakened 58 states. On average, predicates are now at 78.13% of their original sizes. [2018-10-27 03:19:06,436 INFO L413 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-27 03:21:01,850 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 03:21:01,856 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 03:21:01,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 03:21:01 BoogieIcfgContainer [2018-10-27 03:21:01,856 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 03:21:01,857 INFO L168 Benchmark]: Toolchain (without parser) took 235979.32 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-27 03:21:01,859 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. [2018-10-27 03:21:01,859 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1289.65 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. [2018-10-27 03:21:01,860 INFO L168 Benchmark]: Boogie Procedure Inliner took 427.48 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 775.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -893.5 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2018-10-27 03:21:01,861 INFO L168 Benchmark]: Boogie Preprocessor took 251.70 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-10-27 03:21:01,862 INFO L168 Benchmark]: RCFGBuilder took 8527.95 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: 313.2 MB). Peak memory consumption was 313.2 MB. Max. memory is 7.1 GB. [2018-10-27 03:21:01,864 INFO L168 Benchmark]: TraceAbstraction took 225477.25 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 2.6 GB in the end (delta: -747.5 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-10-27 03:21:01,872 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 1289.65 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 427.48 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 775.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -893.5 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 251.70 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8527.95 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: 313.2 MB). Peak memory consumption was 313.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 225477.25 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 2.6 GB in the end (delta: -747.5 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 130]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 130). Cancelled while BasicCegarLoop was analyzing trace of length 312 with TraceHistMax 4,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 15 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 225.4s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 92.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1161 SDtfs, 3409 SDslu, 944 SDs, 0 SdLazy, 6516 SolverSat, 1813 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 64.9s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 235 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4251occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 8.4s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9955021296603607 AbsIntWeakeningRatio, 0.11450381679389313 AbsIntAvgWeakeningVarsNumRemoved, 625.5324427480916 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 378 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 513 NumberOfCodeBlocks, 513 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 509 ConstructedInterpolants, 0 QuantifiedInterpolants, 237439 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 169/244 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown