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_label20_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:47:48,912 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:47:48,914 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:47:48,928 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:47:48,930 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:47:48,931 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:47:48,932 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:47:48,935 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:47:48,937 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:47:48,939 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:47:48,941 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:47:48,943 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:47:48,944 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:47:48,945 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:47:48,948 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:47:48,949 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:47:48,950 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:47:48,955 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:47:48,963 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:47:48,970 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:47:48,971 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:47:48,975 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:47:48,980 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 21:47:48,988 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 21:47:49,016 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:47:49,016 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:47:49,017 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:47:49,018 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:47:49,018 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:47:49,018 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:47:49,018 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:47:49,019 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:47:49,019 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:47:49,019 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:47:49,020 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:47:49,020 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:47:49,021 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:47:49,022 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:47:49,022 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:47:49,022 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:47:49,022 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:47:49,023 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:47:49,024 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:47:49,024 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:47:49,024 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:47:49,024 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:47:49,024 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:47:49,025 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:47:49,025 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:47:49,025 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:47:49,025 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:47:49,025 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:47:49,026 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:47:49,026 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:47:49,026 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:47:49,027 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:47:49,027 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:47:49,027 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:47:49,095 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:47:49,113 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:47:49,117 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:47:49,118 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:47:49,119 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:47:49,120 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label20_true-unreach-call.c [2018-10-24 21:47:49,192 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e98dfd567/c983649cdf11476d8339e42685ac88ce/FLAGc1dd2f8b4 [2018-10-24 21:47:49,894 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:47:49,895 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label20_true-unreach-call.c [2018-10-24 21:47:49,919 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e98dfd567/c983649cdf11476d8339e42685ac88ce/FLAGc1dd2f8b4 [2018-10-24 21:47:49,937 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e98dfd567/c983649cdf11476d8339e42685ac88ce [2018-10-24 21:47:49,948 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:47:49,950 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:47:49,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:47:49,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:47:49,955 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:47:49,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:47:49" (1/1) ... [2018-10-24 21:47:49,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@769766bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:49, skipping insertion in model container [2018-10-24 21:47:49,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:47:49" (1/1) ... [2018-10-24 21:47:49,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:47:50,059 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:47:50,848 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:47:50,852 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:47:51,140 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:47:51,163 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:47:51,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:51 WrapperNode [2018-10-24 21:47:51,164 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:47:51,165 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:47:51,165 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:47:51,165 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:47:51,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:51" (1/1) ... [2018-10-24 21:47:51,219 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:51" (1/1) ... [2018-10-24 21:47:51,579 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:47:51,580 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:47:51,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:47:51,580 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:47:51,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:51" (1/1) ... [2018-10-24 21:47:51,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:51" (1/1) ... [2018-10-24 21:47:51,609 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:51" (1/1) ... [2018-10-24 21:47:51,609 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:51" (1/1) ... [2018-10-24 21:47:51,694 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:51" (1/1) ... [2018-10-24 21:47:51,720 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:51" (1/1) ... [2018-10-24 21:47:51,750 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:51" (1/1) ... [2018-10-24 21:47:51,786 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:47:51,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:47:51,786 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:47:51,787 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:47:51,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:47:51,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:47:51,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:47:51,858 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:47:51,859 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:47:51,859 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:47:51,859 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:47:51,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:47:51,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:47:51,860 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:47:51,860 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:47:59,668 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:47:59,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:47:59 BoogieIcfgContainer [2018-10-24 21:47:59,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:47:59,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:47:59,671 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:47:59,675 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:47:59,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:47:49" (1/3) ... [2018-10-24 21:47:59,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e3a7c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:47:59, skipping insertion in model container [2018-10-24 21:47:59,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:47:51" (2/3) ... [2018-10-24 21:47:59,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e3a7c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:47:59, skipping insertion in model container [2018-10-24 21:47:59,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:47:59" (3/3) ... [2018-10-24 21:47:59,679 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label20_true-unreach-call.c [2018-10-24 21:47:59,689 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:47:59,698 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:47:59,717 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:47:59,759 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:47:59,759 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:47:59,760 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:47:59,760 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:47:59,760 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:47:59,760 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:47:59,760 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:47:59,760 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:47:59,794 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-24 21:47:59,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-24 21:47:59,804 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:47:59,805 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:47:59,807 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:47:59,813 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:47:59,814 INFO L82 PathProgramCache]: Analyzing trace with hash 410122177, now seen corresponding path program 1 times [2018-10-24 21:47:59,817 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:47:59,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:47:59,876 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:47:59,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:47:59,877 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:47:59,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:48:00,391 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-24 21:48:00,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:48:00,416 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:48:00,417 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:48:00,417 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:48:00,424 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:48:00,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:48:00,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:48:00,444 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-10-24 21:48:09,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:48:09,216 INFO L93 Difference]: Finished difference Result 1510 states and 2773 transitions. [2018-10-24 21:48:09,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:48:09,218 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2018-10-24 21:48:09,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:48:09,247 INFO L225 Difference]: With dead ends: 1510 [2018-10-24 21:48:09,248 INFO L226 Difference]: Without dead ends: 1066 [2018-10-24 21:48:09,261 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 [2018-10-24 21:48:09,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2018-10-24 21:48:09,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1064. [2018-10-24 21:48:09,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1064 states. [2018-10-24 21:48:09,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1590 transitions. [2018-10-24 21:48:09,457 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1590 transitions. Word has length 49 [2018-10-24 21:48:09,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:48:09,457 INFO L481 AbstractCegarLoop]: Abstraction has 1064 states and 1590 transitions. [2018-10-24 21:48:09,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:48:09,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1590 transitions. [2018-10-24 21:48:09,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-24 21:48:09,469 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:48:09,470 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:48:09,472 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:48:09,473 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:48:09,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1315680885, now seen corresponding path program 1 times [2018-10-24 21:48:09,473 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:48:09,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:48:09,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:48:09,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:48:09,475 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:48:09,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:48:09,817 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:48:09,817 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:48:09,817 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:48:09,818 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:48:09,820 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:48:09,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:48:09,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:48:09,821 INFO L87 Difference]: Start difference. First operand 1064 states and 1590 transitions. Second operand 5 states. [2018-10-24 21:48:25,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:48:25,298 INFO L93 Difference]: Finished difference Result 3340 states and 4979 transitions. [2018-10-24 21:48:25,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:48:25,305 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2018-10-24 21:48:25,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:48:25,321 INFO L225 Difference]: With dead ends: 3340 [2018-10-24 21:48:25,321 INFO L226 Difference]: Without dead ends: 2282 [2018-10-24 21:48:25,328 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-24 21:48:25,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2282 states. [2018-10-24 21:48:25,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2282 to 2267. [2018-10-24 21:48:25,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2267 states. [2018-10-24 21:48:25,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2267 states to 2267 states and 3306 transitions. [2018-10-24 21:48:25,421 INFO L78 Accepts]: Start accepts. Automaton has 2267 states and 3306 transitions. Word has length 119 [2018-10-24 21:48:25,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:48:25,422 INFO L481 AbstractCegarLoop]: Abstraction has 2267 states and 3306 transitions. [2018-10-24 21:48:25,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:48:25,422 INFO L276 IsEmpty]: Start isEmpty. Operand 2267 states and 3306 transitions. [2018-10-24 21:48:25,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-24 21:48:25,427 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:48:25,427 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:48:25,434 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:48:25,435 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:48:25,435 INFO L82 PathProgramCache]: Analyzing trace with hash -2016407952, now seen corresponding path program 1 times [2018-10-24 21:48:25,435 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:48:25,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:48:25,437 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:48:25,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:48:25,437 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:48:25,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:48:25,694 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:48:25,695 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:48:25,695 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:48:25,695 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:48:25,696 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:48:25,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:48:25,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:48:25,697 INFO L87 Difference]: Start difference. First operand 2267 states and 3306 transitions. Second operand 6 states. [2018-10-24 21:48:31,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:48:31,589 INFO L93 Difference]: Finished difference Result 6382 states and 9947 transitions. [2018-10-24 21:48:31,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:48:31,590 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2018-10-24 21:48:31,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:48:31,622 INFO L225 Difference]: With dead ends: 6382 [2018-10-24 21:48:31,623 INFO L226 Difference]: Without dead ends: 4430 [2018-10-24 21:48:31,638 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:48:31,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4430 states. [2018-10-24 21:48:31,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4430 to 4375. [2018-10-24 21:48:31,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4375 states. [2018-10-24 21:48:31,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4375 states to 4375 states and 5974 transitions. [2018-10-24 21:48:31,769 INFO L78 Accepts]: Start accepts. Automaton has 4375 states and 5974 transitions. Word has length 124 [2018-10-24 21:48:31,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:48:31,770 INFO L481 AbstractCegarLoop]: Abstraction has 4375 states and 5974 transitions. [2018-10-24 21:48:31,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:48:31,770 INFO L276 IsEmpty]: Start isEmpty. Operand 4375 states and 5974 transitions. [2018-10-24 21:48:31,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-24 21:48:31,772 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:48:31,773 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:48:31,773 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:48:31,773 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:48:31,774 INFO L82 PathProgramCache]: Analyzing trace with hash 2021875324, now seen corresponding path program 1 times [2018-10-24 21:48:31,774 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:48:31,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:48:31,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:48:31,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:48:31,775 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:48:31,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:48:31,962 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:48:31,963 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:48:31,963 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:48:31,963 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:48:31,964 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:48:31,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:48:31,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:48:31,964 INFO L87 Difference]: Start difference. First operand 4375 states and 5974 transitions. Second operand 4 states. [2018-10-24 21:48:37,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:48:37,511 INFO L93 Difference]: Finished difference Result 11465 states and 16390 transitions. [2018-10-24 21:48:37,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:48:37,517 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2018-10-24 21:48:37,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:48:37,554 INFO L225 Difference]: With dead ends: 11465 [2018-10-24 21:48:37,555 INFO L226 Difference]: Without dead ends: 7405 [2018-10-24 21:48:37,579 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:48:37,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7405 states. [2018-10-24 21:48:37,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7405 to 7399. [2018-10-24 21:48:37,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7399 states. [2018-10-24 21:48:37,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7399 states to 7399 states and 9840 transitions. [2018-10-24 21:48:37,760 INFO L78 Accepts]: Start accepts. Automaton has 7399 states and 9840 transitions. Word has length 130 [2018-10-24 21:48:37,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:48:37,761 INFO L481 AbstractCegarLoop]: Abstraction has 7399 states and 9840 transitions. [2018-10-24 21:48:37,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:48:37,761 INFO L276 IsEmpty]: Start isEmpty. Operand 7399 states and 9840 transitions. [2018-10-24 21:48:37,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-24 21:48:37,768 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:48:37,768 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:48:37,768 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:48:37,769 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:48:37,772 INFO L82 PathProgramCache]: Analyzing trace with hash 419544631, now seen corresponding path program 1 times [2018-10-24 21:48:37,772 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:48:37,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:48:37,773 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:48:37,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:48:37,773 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:48:37,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:48:38,191 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:48:38,192 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:48:38,192 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:48:38,193 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 146 with the following transitions: [2018-10-24 21:48:38,195 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [365], [367], [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], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 21:48:38,263 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:48:38,264 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:48:40,256 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:48:48,213 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 21:48:48,214 INFO L272 AbstractInterpreter]: Visited 104 different actions 298 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 21:48:48,230 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:48:48,231 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 21:48:48,231 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:48:48,231 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 21:48:48,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:48:48,242 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 21:48:48,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:48:48,322 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 21:48:48,511 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:48:48,512 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 21:48:48,807 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:48:48,839 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-24 21:48:48,839 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2018-10-24 21:48:48,840 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:48:48,840 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:48:48,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:48:48,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-10-24 21:48:48,841 INFO L87 Difference]: Start difference. First operand 7399 states and 9840 transitions. Second operand 6 states. [2018-10-24 21:48:57,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:48:57,202 INFO L93 Difference]: Finished difference Result 25922 states and 36237 transitions. [2018-10-24 21:48:57,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 21:48:57,203 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2018-10-24 21:48:57,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:48:57,332 INFO L225 Difference]: With dead ends: 25922 [2018-10-24 21:48:57,332 INFO L226 Difference]: Without dead ends: 18838 [2018-10-24 21:48:57,403 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 288 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-10-24 21:48:57,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18838 states. [2018-10-24 21:48:57,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18838 to 18786. [2018-10-24 21:48:57,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18786 states. [2018-10-24 21:48:57,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18786 states to 18786 states and 25161 transitions. [2018-10-24 21:48:57,887 INFO L78 Accepts]: Start accepts. Automaton has 18786 states and 25161 transitions. Word has length 145 [2018-10-24 21:48:57,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:48:57,888 INFO L481 AbstractCegarLoop]: Abstraction has 18786 states and 25161 transitions. [2018-10-24 21:48:57,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:48:57,888 INFO L276 IsEmpty]: Start isEmpty. Operand 18786 states and 25161 transitions. [2018-10-24 21:48:57,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-24 21:48:57,910 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:48:57,911 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 21:48:57,911 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:48:57,911 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:48:57,912 INFO L82 PathProgramCache]: Analyzing trace with hash 577768630, now seen corresponding path program 1 times [2018-10-24 21:48:57,912 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:48:57,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:48:57,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:48:57,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:48:57,913 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:48:57,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:48:58,518 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 85 proven. 66 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 21:48:58,518 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:48:58,518 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:48:58,519 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 219 with the following transitions: [2018-10-24 21:48:58,519 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], [361], [365], [367], [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], [585], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 21:48:58,527 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:48:58,528 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:49:00,052 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:49:07,072 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 21:49:07,073 INFO L272 AbstractInterpreter]: Visited 105 different actions 301 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 21:49:07,079 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:49:07,079 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 21:49:07,079 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:49:07,079 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 21:49:07,093 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:49:07,093 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 21:49:07,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:49:07,170 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 21:49:07,318 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 85 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-10-24 21:49:07,318 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 21:49:07,743 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-10-24 21:49:07,765 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-24 21:49:07,765 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 9 [2018-10-24 21:49:07,765 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:49:07,766 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:49:07,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:49:07,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:49:07,767 INFO L87 Difference]: Start difference. First operand 18786 states and 25161 transitions. Second operand 5 states. [2018-10-24 21:49:12,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:49:12,085 INFO L93 Difference]: Finished difference Result 43199 states and 60674 transitions. [2018-10-24 21:49:12,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 21:49:12,088 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 218 [2018-10-24 21:49:12,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:49:12,212 INFO L225 Difference]: With dead ends: 43199 [2018-10-24 21:49:12,212 INFO L226 Difference]: Without dead ends: 24727 [2018-10-24 21:49:12,275 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 434 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2018-10-24 21:49:12,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24727 states. [2018-10-24 21:49:12,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24727 to 23619. [2018-10-24 21:49:12,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23619 states. [2018-10-24 21:49:12,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23619 states to 23619 states and 30133 transitions. [2018-10-24 21:49:12,849 INFO L78 Accepts]: Start accepts. Automaton has 23619 states and 30133 transitions. Word has length 218 [2018-10-24 21:49:12,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:49:12,850 INFO L481 AbstractCegarLoop]: Abstraction has 23619 states and 30133 transitions. [2018-10-24 21:49:12,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:49:12,850 INFO L276 IsEmpty]: Start isEmpty. Operand 23619 states and 30133 transitions. [2018-10-24 21:49:12,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-10-24 21:49:12,884 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:49:12,884 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 21:49:12,885 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:49:12,885 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:49:12,885 INFO L82 PathProgramCache]: Analyzing trace with hash -2071919887, now seen corresponding path program 1 times [2018-10-24 21:49:12,885 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:49:12,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:49:12,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:49:12,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:49:12,886 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:49:12,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:49:13,609 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-10-24 21:49:13,610 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:49:13,610 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:49:13,610 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 239 with the following transitions: [2018-10-24 21:49:13,611 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [365], [367], [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], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [746], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 21:49:13,621 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:49:13,622 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:49:15,762 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:49:15,952 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:49:15,952 INFO L272 AbstractInterpreter]: Visited 113 different actions 113 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 21:49:15,990 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:49:15,990 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:49:17,853 INFO L232 lantSequenceWeakener]: Weakened 230 states. On average, predicates are now at 77.97% of their original sizes. [2018-10-24 21:49:17,854 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:49:18,469 INFO L413 sIntCurrentIteration]: We have 237 unified AI predicates [2018-10-24 21:49:18,470 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:49:18,471 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:49:18,471 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2018-10-24 21:49:18,471 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:49:18,472 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 21:49:18,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 21:49:18,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:49:18,473 INFO L87 Difference]: Start difference. First operand 23619 states and 30133 transitions. Second operand 8 states. [2018-10-24 21:50:09,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:50:09,301 INFO L93 Difference]: Finished difference Result 46926 states and 59922 transitions. [2018-10-24 21:50:09,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:50:09,301 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 238 [2018-10-24 21:50:09,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:50:09,400 INFO L225 Difference]: With dead ends: 46926 [2018-10-24 21:50:09,401 INFO L226 Difference]: Without dead ends: 23621 [2018-10-24 21:50:09,478 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 239 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 21:50:09,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23621 states. [2018-10-24 21:50:09,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23621 to 23619. [2018-10-24 21:50:09,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23619 states. [2018-10-24 21:50:09,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23619 states to 23619 states and 30109 transitions. [2018-10-24 21:50:09,945 INFO L78 Accepts]: Start accepts. Automaton has 23619 states and 30109 transitions. Word has length 238 [2018-10-24 21:50:09,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:50:09,946 INFO L481 AbstractCegarLoop]: Abstraction has 23619 states and 30109 transitions. [2018-10-24 21:50:09,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 21:50:09,946 INFO L276 IsEmpty]: Start isEmpty. Operand 23619 states and 30109 transitions. [2018-10-24 21:50:09,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2018-10-24 21:50:09,979 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:50:09,980 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:50:09,980 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:50:09,981 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:50:09,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1405899324, now seen corresponding path program 1 times [2018-10-24 21:50:09,981 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:50:09,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:50:09,982 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:50:09,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:50:09,982 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:50:10,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:50:10,336 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:50:10,852 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 132 proven. 242 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-24 21:50:10,853 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:50:10,853 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:50:10,854 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 338 with the following transitions: [2018-10-24 21:50:10,854 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [365], [367], [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], [614], [618], [622], [626], [630], [633], [638], [640], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [734], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 21:50:10,862 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:50:10,862 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:50:13,871 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:50:20,774 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 21:50:20,774 INFO L272 AbstractInterpreter]: Visited 115 different actions 331 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 21:50:20,780 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:50:20,780 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 21:50:20,780 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:50:20,780 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 21:50:20,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:50:20,790 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 21:50:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:50:20,899 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 21:50:21,085 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 347 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-10-24 21:50:21,085 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 21:50:21,299 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 214 proven. 84 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-10-24 21:50:21,330 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 21:50:21,330 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-24 21:50:21,330 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 21:50:21,331 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 21:50:21,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 21:50:21,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-10-24 21:50:21,332 INFO L87 Difference]: Start difference. First operand 23619 states and 30109 transitions. Second operand 9 states. [2018-10-24 21:50:31,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:50:31,566 INFO L93 Difference]: Finished difference Result 49459 states and 63530 transitions. [2018-10-24 21:50:31,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-24 21:50:31,566 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 337 [2018-10-24 21:50:31,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:50:31,664 INFO L225 Difference]: With dead ends: 49459 [2018-10-24 21:50:31,665 INFO L226 Difference]: Without dead ends: 26154 [2018-10-24 21:50:31,772 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 706 GetRequests, 682 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=155, Invalid=351, Unknown=0, NotChecked=0, Total=506 [2018-10-24 21:50:31,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26154 states. [2018-10-24 21:50:32,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26154 to 25567. [2018-10-24 21:50:32,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25567 states. [2018-10-24 21:50:32,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25567 states to 25567 states and 29997 transitions. [2018-10-24 21:50:32,221 INFO L78 Accepts]: Start accepts. Automaton has 25567 states and 29997 transitions. Word has length 337 [2018-10-24 21:50:32,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:50:32,222 INFO L481 AbstractCegarLoop]: Abstraction has 25567 states and 29997 transitions. [2018-10-24 21:50:32,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 21:50:32,222 INFO L276 IsEmpty]: Start isEmpty. Operand 25567 states and 29997 transitions. [2018-10-24 21:50:32,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2018-10-24 21:50:32,242 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:50:32,243 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:50:32,243 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:50:32,243 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:50:32,243 INFO L82 PathProgramCache]: Analyzing trace with hash 560387599, now seen corresponding path program 1 times [2018-10-24 21:50:32,244 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:50:32,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:50:32,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:50:32,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:50:32,245 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:50:32,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:50:32,821 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 206 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:50:32,822 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:50:32,822 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:50:32,822 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 461 with the following transitions: [2018-10-24 21:50:32,823 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [365], [367], [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], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [838], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1562], [1566], [1570], [1581], [1585], [1589], [1593], [1597], [1601], [1612], [1616], [1620], [1623], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 21:50:32,831 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:50:32,832 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:50:38,234 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:51:03,130 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:51:03,130 INFO L272 AbstractInterpreter]: Visited 295 different actions 872 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 21:51:03,137 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:51:03,137 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:51:08,860 INFO L232 lantSequenceWeakener]: Weakened 68 states. On average, predicates are now at 80.06% of their original sizes. [2018-10-24 21:51:08,860 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:51:22,878 INFO L413 sIntCurrentIteration]: We have 459 unified AI predicates [2018-10-24 21:51:22,878 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:51:22,878 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:51:22,879 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [6] total 25 [2018-10-24 21:51:22,879 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:51:22,879 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-24 21:51:22,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-24 21:51:22,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2018-10-24 21:51:22,880 INFO L87 Difference]: Start difference. First operand 25567 states and 29997 transitions. Second operand 21 states. Received shutdown request... [2018-10-24 21:51:32,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 21:51:32,253 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:51:32,258 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:51:32,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:51:32 BoogieIcfgContainer [2018-10-24 21:51:32,259 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:51:32,259 INFO L168 Benchmark]: Toolchain (without parser) took 222310.80 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 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-24 21:51:32,261 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:51:32,261 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1213.31 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-10-24 21:51:32,262 INFO L168 Benchmark]: Boogie Procedure Inliner took 414.69 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 754.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -869.5 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2018-10-24 21:51:32,263 INFO L168 Benchmark]: Boogie Preprocessor took 206.21 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 7.1 GB. [2018-10-24 21:51:32,264 INFO L168 Benchmark]: RCFGBuilder took 7883.74 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 298.2 MB). Peak memory consumption was 298.2 MB. Max. memory is 7.1 GB. [2018-10-24 21:51:32,265 INFO L168 Benchmark]: TraceAbstraction took 212587.88 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.8 GB in the beginning and 2.6 GB in the end (delta: -762.3 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-24 21:51:32,272 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1213.31 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 414.69 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 754.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -869.5 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 206.21 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7883.74 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 298.2 MB). Peak memory consumption was 298.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 212587.88 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.8 GB in the beginning and 2.6 GB in the end (delta: -762.3 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 133]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 133). Cancelled while BasicCegarLoop was constructing difference of abstraction (25567states) and FLOYD_HOARE automaton (currently 9 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (17 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 212.5s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 119.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2189 SDtfs, 11673 SDslu, 1716 SDs, 0 SdLazy, 18602 SolverSat, 4899 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 83.5s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 2181 GetRequests, 2087 SyntacticMatches, 8 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 17.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25567occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 61.2s AbstIntTime, 5 AbstIntIterations, 2 AbstIntStrong, 0.9968557387972681 AbsIntWeakeningRatio, 0.07471264367816093 AbsIntAvgWeakeningVarsNumRemoved, 463.1278735632184 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.5s AutomataMinimizationTime, 8 MinimizatonAttempts, 1827 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 2520 NumberOfCodeBlocks, 2520 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 3205 ConstructedInterpolants, 0 QuantifiedInterpolants, 2735395 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1246 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 15 InterpolantComputations, 6 PerfectInterpolantSequences, 1796/2272 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown