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/Problem10_label34_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 00:56:05,115 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 00:56:05,117 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 00:56:05,130 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 00:56:05,130 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 00:56:05,131 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 00:56:05,133 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 00:56:05,135 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 00:56:05,137 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 00:56:05,139 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 00:56:05,140 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 00:56:05,140 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 00:56:05,141 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 00:56:05,142 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 00:56:05,143 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 00:56:05,144 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 00:56:05,145 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 00:56:05,147 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 00:56:05,152 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 00:56:05,154 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 00:56:05,155 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 00:56:05,162 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 00:56:05,165 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 00:56:05,183 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 00:56:05,218 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 00:56:05,218 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 00:56:05,222 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 00:56:05,222 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 00:56:05,222 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 00:56:05,223 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 00:56:05,223 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 00:56:05,223 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 00:56:05,223 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 00:56:05,224 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 00:56:05,224 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 00:56:05,224 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 00:56:05,225 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 00:56:05,226 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 00:56:05,226 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 00:56:05,226 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 00:56:05,226 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 00:56:05,226 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 00:56:05,227 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 00:56:05,228 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 00:56:05,228 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 00:56:05,228 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 00:56:05,228 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 00:56:05,229 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 00:56:05,229 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 00:56:05,229 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 00:56:05,229 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 00:56:05,229 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 00:56:05,230 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 00:56:05,230 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 00:56:05,231 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 00:56:05,231 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 00:56:05,231 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 00:56:05,231 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 00:56:05,287 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 00:56:05,302 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 00:56:05,306 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 00:56:05,307 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 00:56:05,308 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 00:56:05,309 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label34_true-unreach-call.c [2018-10-24 00:56:05,371 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e0d8fe932/03d7f79657ff43ceb5a0c7791b9dc992/FLAG35180b751 [2018-10-24 00:56:05,988 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 00:56:05,994 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label34_true-unreach-call.c [2018-10-24 00:56:06,016 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e0d8fe932/03d7f79657ff43ceb5a0c7791b9dc992/FLAG35180b751 [2018-10-24 00:56:06,032 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e0d8fe932/03d7f79657ff43ceb5a0c7791b9dc992 [2018-10-24 00:56:06,044 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 00:56:06,045 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 00:56:06,046 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 00:56:06,046 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 00:56:06,050 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 00:56:06,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:56:06" (1/1) ... [2018-10-24 00:56:06,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ad6d500 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:56:06, skipping insertion in model container [2018-10-24 00:56:06,054 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:56:06" (1/1) ... [2018-10-24 00:56:06,064 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 00:56:06,120 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 00:56:06,539 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 00:56:06,544 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 00:56:06,665 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 00:56:06,682 INFO L193 MainTranslator]: Completed translation [2018-10-24 00:56:06,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:56:06 WrapperNode [2018-10-24 00:56:06,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 00:56:06,684 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 00:56:06,684 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 00:56:06,684 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 00:56:06,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:56:06" (1/1) ... [2018-10-24 00:56:06,715 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:56:06" (1/1) ... [2018-10-24 00:56:06,895 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 00:56:06,895 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 00:56:06,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 00:56:06,896 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 00:56:06,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:56:06" (1/1) ... [2018-10-24 00:56:06,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:56:06" (1/1) ... [2018-10-24 00:56:06,929 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:56:06" (1/1) ... [2018-10-24 00:56:06,929 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:56:06" (1/1) ... [2018-10-24 00:56:06,973 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:56:06" (1/1) ... [2018-10-24 00:56:06,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:56:06" (1/1) ... [2018-10-24 00:56:06,993 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:56:06" (1/1) ... [2018-10-24 00:56:07,004 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 00:56:07,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 00:56:07,005 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 00:56:07,006 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 00:56:07,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:56:06" (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 00:56:07,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 00:56:07,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 00:56:07,090 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 00:56:07,090 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 00:56:07,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 00:56:07,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 00:56:07,090 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 00:56:07,091 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 00:56:10,377 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 00:56:10,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:56:10 BoogieIcfgContainer [2018-10-24 00:56:10,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 00:56:10,381 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 00:56:10,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 00:56:10,384 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 00:56:10,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:56:06" (1/3) ... [2018-10-24 00:56:10,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba1ce77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:56:10, skipping insertion in model container [2018-10-24 00:56:10,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:56:06" (2/3) ... [2018-10-24 00:56:10,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba1ce77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:56:10, skipping insertion in model container [2018-10-24 00:56:10,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:56:10" (3/3) ... [2018-10-24 00:56:10,387 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label34_true-unreach-call.c [2018-10-24 00:56:10,396 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 00:56:10,407 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 00:56:10,424 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 00:56:10,462 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 00:56:10,462 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 00:56:10,462 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 00:56:10,463 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 00:56:10,463 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 00:56:10,463 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 00:56:10,463 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 00:56:10,463 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 00:56:10,491 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-24 00:56:10,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-24 00:56:10,502 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 00:56:10,503 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 00:56:10,506 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 00:56:10,511 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:56:10,512 INFO L82 PathProgramCache]: Analyzing trace with hash 427988964, now seen corresponding path program 1 times [2018-10-24 00:56:10,514 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 00:56:10,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:56:10,560 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:56:10,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:56:10,561 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 00:56:10,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 00:56:11,147 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 00:56:11,149 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 00:56:11,150 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 00:56:11,150 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 00:56:11,158 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 00:56:11,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 00:56:11,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 00:56:11,184 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 4 states. [2018-10-24 00:56:13,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 00:56:13,940 INFO L93 Difference]: Finished difference Result 737 states and 1298 transitions. [2018-10-24 00:56:13,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 00:56:13,943 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2018-10-24 00:56:13,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 00:56:13,967 INFO L225 Difference]: With dead ends: 737 [2018-10-24 00:56:13,968 INFO L226 Difference]: Without dead ends: 515 [2018-10-24 00:56:13,976 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 00:56:13,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2018-10-24 00:56:14,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 515. [2018-10-24 00:56:14,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 515 states. [2018-10-24 00:56:14,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 848 transitions. [2018-10-24 00:56:14,108 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 848 transitions. Word has length 70 [2018-10-24 00:56:14,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 00:56:14,109 INFO L481 AbstractCegarLoop]: Abstraction has 515 states and 848 transitions. [2018-10-24 00:56:14,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 00:56:14,109 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 848 transitions. [2018-10-24 00:56:14,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-24 00:56:14,133 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 00:56:14,133 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 00:56:14,133 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 00:56:14,136 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:56:14,136 INFO L82 PathProgramCache]: Analyzing trace with hash 453720075, now seen corresponding path program 1 times [2018-10-24 00:56:14,136 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 00:56:14,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:56:14,138 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:56:14,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:56:14,138 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 00:56:14,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 00:56:14,505 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 00:56:14,505 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 00:56:14,505 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 00:56:14,506 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 00:56:14,508 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 00:56:14,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 00:56:14,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 00:56:14,509 INFO L87 Difference]: Start difference. First operand 515 states and 848 transitions. Second operand 6 states. [2018-10-24 00:56:17,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 00:56:17,442 INFO L93 Difference]: Finished difference Result 1863 states and 3251 transitions. [2018-10-24 00:56:17,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 00:56:17,444 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2018-10-24 00:56:17,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 00:56:17,466 INFO L225 Difference]: With dead ends: 1863 [2018-10-24 00:56:17,467 INFO L226 Difference]: Without dead ends: 1354 [2018-10-24 00:56:17,475 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 00:56:17,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2018-10-24 00:56:17,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1331. [2018-10-24 00:56:17,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1331 states. [2018-10-24 00:56:17,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 2051 transitions. [2018-10-24 00:56:17,575 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 2051 transitions. Word has length 145 [2018-10-24 00:56:17,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 00:56:17,576 INFO L481 AbstractCegarLoop]: Abstraction has 1331 states and 2051 transitions. [2018-10-24 00:56:17,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 00:56:17,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 2051 transitions. [2018-10-24 00:56:17,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-24 00:56:17,583 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 00:56:17,583 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 00:56:17,584 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 00:56:17,584 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:56:17,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1203594976, now seen corresponding path program 1 times [2018-10-24 00:56:17,585 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 00:56:17,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:56:17,586 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:56:17,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:56:17,586 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 00:56:17,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 00:56:17,875 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 00:56:17,876 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 00:56:17,876 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 00:56:17,876 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 00:56:17,877 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 00:56:17,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 00:56:17,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 00:56:17,878 INFO L87 Difference]: Start difference. First operand 1331 states and 2051 transitions. Second operand 6 states. [2018-10-24 00:56:20,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 00:56:20,906 INFO L93 Difference]: Finished difference Result 3539 states and 5767 transitions. [2018-10-24 00:56:20,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 00:56:20,908 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 178 [2018-10-24 00:56:20,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 00:56:20,925 INFO L225 Difference]: With dead ends: 3539 [2018-10-24 00:56:20,925 INFO L226 Difference]: Without dead ends: 2214 [2018-10-24 00:56:20,938 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 00:56:20,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2214 states. [2018-10-24 00:56:20,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2214 to 2179. [2018-10-24 00:56:20,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2179 states. [2018-10-24 00:56:21,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2179 states to 2179 states and 3196 transitions. [2018-10-24 00:56:21,008 INFO L78 Accepts]: Start accepts. Automaton has 2179 states and 3196 transitions. Word has length 178 [2018-10-24 00:56:21,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 00:56:21,009 INFO L481 AbstractCegarLoop]: Abstraction has 2179 states and 3196 transitions. [2018-10-24 00:56:21,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 00:56:21,009 INFO L276 IsEmpty]: Start isEmpty. Operand 2179 states and 3196 transitions. [2018-10-24 00:56:21,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-10-24 00:56:21,022 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 00:56:21,023 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, 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, 1, 1, 1, 1, 1, 1, 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 00:56:21,023 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 00:56:21,023 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:56:21,024 INFO L82 PathProgramCache]: Analyzing trace with hash -932170556, now seen corresponding path program 1 times [2018-10-24 00:56:21,024 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 00:56:21,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:56:21,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:56:21,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:56:21,025 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 00:56:21,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 00:56:21,397 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 00:56:21,754 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 118 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-10-24 00:56:21,755 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 00:56:21,755 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 00:56:21,756 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 267 with the following transitions: [2018-10-24 00:56:21,760 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [461], [463], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [566], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [646], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 00:56:21,869 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 00:56:21,869 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 00:56:25,492 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 00:56:25,494 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 00:56:25,545 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:56:25,546 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 00:56:30,514 INFO L232 lantSequenceWeakener]: Weakened 245 states. On average, predicates are now at 73.9% of their original sizes. [2018-10-24 00:56:30,515 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 00:56:38,319 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 00:56:38,320 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 00:56:38,320 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [4] total 12 [2018-10-24 00:56:38,321 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 00:56:38,321 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 00:56:38,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 00:56:38,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-24 00:56:38,322 INFO L87 Difference]: Start difference. First operand 2179 states and 3196 transitions. Second operand 10 states. [2018-10-24 00:56:50,163 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 00:57:25,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 00:57:25,979 INFO L93 Difference]: Finished difference Result 4501 states and 6622 transitions. [2018-10-24 00:57:25,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 00:57:25,979 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 266 [2018-10-24 00:57:25,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 00:57:25,993 INFO L225 Difference]: With dead ends: 4501 [2018-10-24 00:57:25,993 INFO L226 Difference]: Without dead ends: 2328 [2018-10-24 00:57:26,003 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 269 GetRequests, 203 SyntacticMatches, 54 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-10-24 00:57:26,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2328 states. [2018-10-24 00:57:26,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2328 to 2323. [2018-10-24 00:57:26,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2323 states. [2018-10-24 00:57:26,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2323 states to 2323 states and 3348 transitions. [2018-10-24 00:57:26,096 INFO L78 Accepts]: Start accepts. Automaton has 2323 states and 3348 transitions. Word has length 266 [2018-10-24 00:57:26,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 00:57:26,097 INFO L481 AbstractCegarLoop]: Abstraction has 2323 states and 3348 transitions. [2018-10-24 00:57:26,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-24 00:57:26,097 INFO L276 IsEmpty]: Start isEmpty. Operand 2323 states and 3348 transitions. [2018-10-24 00:57:26,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2018-10-24 00:57:26,111 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 00:57:26,112 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 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 00:57:26,112 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 00:57:26,113 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:57:26,113 INFO L82 PathProgramCache]: Analyzing trace with hash 238222643, now seen corresponding path program 1 times [2018-10-24 00:57:26,113 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 00:57:26,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:57:26,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:57:26,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:57:26,114 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 00:57:26,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 00:57:27,099 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 263 proven. 87 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-10-24 00:57:27,100 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 00:57:27,100 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 00:57:27,100 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 338 with the following transitions: [2018-10-24 00:57:27,101 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [461], [463], [466], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [566], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [646], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 00:57:27,108 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 00:57:27,109 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 00:57:28,364 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 00:57:43,599 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 00:57:43,599 INFO L272 AbstractInterpreter]: Visited 117 different actions 672 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 00:57:43,606 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:57:43,606 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 00:57:47,793 INFO L232 lantSequenceWeakener]: Weakened 158 states. On average, predicates are now at 74.55% of their original sizes. [2018-10-24 00:57:47,793 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 00:58:10,729 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 00:58:10,730 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 00:58:10,730 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [14] total 30 [2018-10-24 00:58:10,730 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 00:58:10,731 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-24 00:58:10,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-24 00:58:10,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2018-10-24 00:58:10,731 INFO L87 Difference]: Start difference. First operand 2323 states and 3348 transitions. Second operand 18 states. Received shutdown request... [2018-10-24 00:59:58,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-24 00:59:58,381 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 00:59:58,386 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 00:59:58,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:59:58 BoogieIcfgContainer [2018-10-24 00:59:58,387 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 00:59:58,388 INFO L168 Benchmark]: Toolchain (without parser) took 232343.09 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.5 GB in the end (delta: -2.1 GB). Peak memory consumption was 585.6 MB. Max. memory is 7.1 GB. [2018-10-24 00:59:58,389 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 00:59:58,389 INFO L168 Benchmark]: CACSL2BoogieTranslator took 637.17 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-24 00:59:58,390 INFO L168 Benchmark]: Boogie Procedure Inliner took 211.18 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -835.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2018-10-24 00:59:58,391 INFO L168 Benchmark]: Boogie Preprocessor took 109.34 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 00:59:58,391 INFO L168 Benchmark]: RCFGBuilder took 3374.40 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: 130.4 MB). Peak memory consumption was 130.4 MB. Max. memory is 7.1 GB. [2018-10-24 00:59:58,392 INFO L168 Benchmark]: TraceAbstraction took 228006.34 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.5 GB in the end (delta: -1.5 GB). Peak memory consumption was 498.6 MB. Max. memory is 7.1 GB. [2018-10-24 00:59:58,397 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 637.17 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 211.18 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -835.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.34 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3374.40 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: 130.4 MB). Peak memory consumption was 130.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 228006.34 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.5 GB in the end (delta: -1.5 GB). Peak memory consumption was 498.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 193]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 193). Cancelled while BasicCegarLoop was constructing difference of abstraction (2323states) and FLOYD_HOARE automaton (currently 25 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (2128 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 227.9s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 164.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 673 SDtfs, 3601 SDslu, 446 SDs, 0 SdLazy, 4441 SolverSat, 1014 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 80.8s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 640 GetRequests, 492 SyntacticMatches, 95 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 33.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2323occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 20.2s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.995933709517953 AbsIntWeakeningRatio, 0.09650582362728785 AbsIntAvgWeakeningVarsNumRemoved, 92.94675540765391 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 63 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 996 NumberOfCodeBlocks, 996 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 991 ConstructedInterpolants, 0 QuantifiedInterpolants, 1625233 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 554/759 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown