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_label22_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 00:00:15,144 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 00:00:15,146 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 00:00:15,158 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 00:00:15,158 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 00:00:15,159 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 00:00:15,161 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 00:00:15,162 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 00:00:15,164 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 00:00:15,165 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 00:00:15,166 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 00:00:15,166 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 00:00:15,167 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 00:00:15,168 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 00:00:15,169 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 00:00:15,170 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 00:00:15,171 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 00:00:15,172 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 00:00:15,174 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 00:00:15,176 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 00:00:15,177 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 00:00:15,178 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 00:00:15,180 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-27 00:00:15,189 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-27 00:00:15,220 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 00:00:15,220 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 00:00:15,221 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 00:00:15,221 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 00:00:15,221 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 00:00:15,221 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 00:00:15,221 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 00:00:15,226 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 00:00:15,226 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 00:00:15,227 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 00:00:15,227 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 00:00:15,227 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 00:00:15,228 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 00:00:15,228 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 00:00:15,228 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 00:00:15,228 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 00:00:15,229 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 00:00:15,229 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 00:00:15,229 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 00:00:15,229 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 00:00:15,229 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 00:00:15,230 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 00:00:15,230 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 00:00:15,230 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 00:00:15,230 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 00:00:15,230 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 00:00:15,231 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 00:00:15,233 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 00:00:15,233 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 00:00:15,233 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 00:00:15,233 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 00:00:15,233 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 00:00:15,234 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 00:00:15,234 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 00:00:15,284 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 00:00:15,307 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 00:00:15,311 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 00:00:15,312 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 00:00:15,313 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 00:00:15,313 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label22_false-unreach-call.c [2018-10-27 00:00:15,369 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f6f9b68de/a7982d58547548a4b4125f1b1d9c3c2d/FLAG798828b11 [2018-10-27 00:00:16,041 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 00:00:16,042 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label22_false-unreach-call.c [2018-10-27 00:00:16,063 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f6f9b68de/a7982d58547548a4b4125f1b1d9c3c2d/FLAG798828b11 [2018-10-27 00:00:16,078 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f6f9b68de/a7982d58547548a4b4125f1b1d9c3c2d [2018-10-27 00:00:16,089 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 00:00:16,091 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 00:00:16,092 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 00:00:16,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 00:00:16,096 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 00:00:16,097 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:00:16" (1/1) ... [2018-10-27 00:00:16,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@639b200f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:16, skipping insertion in model container [2018-10-27 00:00:16,100 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:00:16" (1/1) ... [2018-10-27 00:00:16,111 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 00:00:16,210 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 00:00:17,013 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:00:17,018 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 00:00:17,299 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:00:17,321 INFO L193 MainTranslator]: Completed translation [2018-10-27 00:00:17,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:17 WrapperNode [2018-10-27 00:00:17,322 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 00:00:17,323 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 00:00:17,323 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 00:00:17,324 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 00:00:17,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:17" (1/1) ... [2018-10-27 00:00:17,387 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:17" (1/1) ... [2018-10-27 00:00:17,701 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 00:00:17,701 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 00:00:17,702 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 00:00:17,702 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 00:00:17,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:17" (1/1) ... [2018-10-27 00:00:17,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:17" (1/1) ... [2018-10-27 00:00:17,731 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:17" (1/1) ... [2018-10-27 00:00:17,731 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:17" (1/1) ... [2018-10-27 00:00:17,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:17" (1/1) ... [2018-10-27 00:00:17,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:17" (1/1) ... [2018-10-27 00:00:17,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:17" (1/1) ... [2018-10-27 00:00:17,909 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 00:00:17,910 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 00:00:17,910 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 00:00:17,910 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 00:00:17,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 00:00:17,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 00:00:17,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 00:00:17,979 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 00:00:17,980 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 00:00:17,980 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 00:00:17,980 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 00:00:17,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 00:00:17,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 00:00:17,980 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 00:00:17,982 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 00:00:23,882 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 00:00:23,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:00:23 BoogieIcfgContainer [2018-10-27 00:00:23,883 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 00:00:23,884 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 00:00:23,884 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 00:00:23,888 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 00:00:23,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:00:16" (1/3) ... [2018-10-27 00:00:23,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c6c5d8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:00:23, skipping insertion in model container [2018-10-27 00:00:23,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:17" (2/3) ... [2018-10-27 00:00:23,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c6c5d8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:00:23, skipping insertion in model container [2018-10-27 00:00:23,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:00:23" (3/3) ... [2018-10-27 00:00:23,893 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label22_false-unreach-call.c [2018-10-27 00:00:23,901 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 00:00:23,910 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 00:00:23,929 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 00:00:23,970 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 00:00:23,971 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 00:00:23,971 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 00:00:23,971 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 00:00:23,971 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 00:00:23,971 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 00:00:23,971 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 00:00:23,972 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 00:00:24,006 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-27 00:00:24,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-27 00:00:24,015 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:00:24,016 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] [2018-10-27 00:00:24,018 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:00:24,024 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:00:24,024 INFO L82 PathProgramCache]: Analyzing trace with hash 417311457, now seen corresponding path program 1 times [2018-10-27 00:00:24,026 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:00:24,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:00:24,080 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:00:24,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:00:24,081 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:00:24,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:00:24,486 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-10-27 00:00:24,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:00:24,497 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:00:24,499 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 00:00:24,499 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:00:24,505 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 00:00:24,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 00:00:24,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 00:00:24,525 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-10-27 00:00:35,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:00:35,413 INFO L93 Difference]: Finished difference Result 1558 states and 2849 transitions. [2018-10-27 00:00:35,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 00:00:35,415 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-10-27 00:00:35,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:00:35,446 INFO L225 Difference]: With dead ends: 1558 [2018-10-27 00:00:35,446 INFO L226 Difference]: Without dead ends: 1114 [2018-10-27 00:00:35,457 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 00:00:35,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2018-10-27 00:00:35,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 1091. [2018-10-27 00:00:35,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2018-10-27 00:00:35,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1853 transitions. [2018-10-27 00:00:35,590 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1853 transitions. Word has length 25 [2018-10-27 00:00:35,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:00:35,591 INFO L481 AbstractCegarLoop]: Abstraction has 1091 states and 1853 transitions. [2018-10-27 00:00:35,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 00:00:35,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1853 transitions. [2018-10-27 00:00:35,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-27 00:00:35,598 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:00:35,599 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 00:00:35,599 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:00:35,599 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:00:35,599 INFO L82 PathProgramCache]: Analyzing trace with hash -764927732, now seen corresponding path program 1 times [2018-10-27 00:00:35,600 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:00:35,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:00:35,601 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:00:35,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:00:35,601 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:00:35,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:00:36,006 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:00:36,006 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:00:36,006 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 00:00:36,007 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:00:36,009 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 00:00:36,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 00:00:36,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 00:00:36,010 INFO L87 Difference]: Start difference. First operand 1091 states and 1853 transitions. Second operand 5 states. [2018-10-27 00:00:44,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:00:44,185 INFO L93 Difference]: Finished difference Result 3240 states and 5580 transitions. [2018-10-27 00:00:44,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 00:00:44,196 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2018-10-27 00:00:44,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:00:44,215 INFO L225 Difference]: With dead ends: 3240 [2018-10-27 00:00:44,216 INFO L226 Difference]: Without dead ends: 2155 [2018-10-27 00:00:44,223 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 00:00:44,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2155 states. [2018-10-27 00:00:44,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2155 to 2114. [2018-10-27 00:00:44,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2114 states. [2018-10-27 00:00:44,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2114 states to 2114 states and 3176 transitions. [2018-10-27 00:00:44,336 INFO L78 Accepts]: Start accepts. Automaton has 2114 states and 3176 transitions. Word has length 98 [2018-10-27 00:00:44,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:00:44,337 INFO L481 AbstractCegarLoop]: Abstraction has 2114 states and 3176 transitions. [2018-10-27 00:00:44,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 00:00:44,338 INFO L276 IsEmpty]: Start isEmpty. Operand 2114 states and 3176 transitions. [2018-10-27 00:00:44,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-27 00:00:44,344 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:00:44,345 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 00:00:44,345 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:00:44,345 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:00:44,346 INFO L82 PathProgramCache]: Analyzing trace with hash -349048548, now seen corresponding path program 1 times [2018-10-27 00:00:44,346 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:00:44,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:00:44,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:00:44,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:00:44,351 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:00:44,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:00:44,632 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:00:44,632 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:00:44,633 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 00:00:44,633 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:00:44,633 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 00:00:44,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 00:00:44,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 00:00:44,634 INFO L87 Difference]: Start difference. First operand 2114 states and 3176 transitions. Second operand 4 states. [2018-10-27 00:00:50,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:00:50,638 INFO L93 Difference]: Finished difference Result 7944 states and 12443 transitions. [2018-10-27 00:00:50,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 00:00:50,641 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2018-10-27 00:00:50,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:00:50,689 INFO L225 Difference]: With dead ends: 7944 [2018-10-27 00:00:50,689 INFO L226 Difference]: Without dead ends: 5836 [2018-10-27 00:00:50,717 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 00:00:50,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5836 states. [2018-10-27 00:00:50,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5836 to 5834. [2018-10-27 00:00:50,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5834 states. [2018-10-27 00:00:50,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5834 states to 5834 states and 8173 transitions. [2018-10-27 00:00:50,924 INFO L78 Accepts]: Start accepts. Automaton has 5834 states and 8173 transitions. Word has length 106 [2018-10-27 00:00:50,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:00:50,924 INFO L481 AbstractCegarLoop]: Abstraction has 5834 states and 8173 transitions. [2018-10-27 00:00:50,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 00:00:50,925 INFO L276 IsEmpty]: Start isEmpty. Operand 5834 states and 8173 transitions. [2018-10-27 00:00:50,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-10-27 00:00:50,941 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:00:50,942 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:00:50,943 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:00:50,944 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:00:50,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1121522118, now seen corresponding path program 1 times [2018-10-27 00:00:50,944 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:00:50,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:00:50,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:00:50,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:00:50,945 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:00:50,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:00:51,311 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 00:00:51,459 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 36 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 00:00:51,459 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:00:51,459 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 00:00:51,460 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 196 with the following transitions: [2018-10-27 00:00:51,462 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [173], [175], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [566], [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], [714], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 00:00:51,552 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 00:00:51,552 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 00:00:53,593 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 00:00:54,384 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 00:00:54,387 INFO L272 AbstractInterpreter]: Visited 105 different actions 105 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 00:00:54,399 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:00:54,399 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 00:00:56,317 INFO L227 lantSequenceWeakener]: Weakened 187 states. On average, predicates are now at 77.55% of their original sizes. [2018-10-27 00:00:56,317 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 00:00:56,676 INFO L415 sIntCurrentIteration]: We unified 194 AI predicates to 194 [2018-10-27 00:00:56,676 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 00:00:56,677 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 00:00:56,677 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-10-27 00:00:56,677 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:00:56,678 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-27 00:00:56,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-27 00:00:56,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-27 00:00:56,679 INFO L87 Difference]: Start difference. First operand 5834 states and 8173 transitions. Second operand 8 states. [2018-10-27 00:01:47,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:01:47,918 INFO L93 Difference]: Finished difference Result 11972 states and 16730 transitions. [2018-10-27 00:01:47,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 00:01:47,918 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 195 [2018-10-27 00:01:47,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:01:47,948 INFO L225 Difference]: With dead ends: 11972 [2018-10-27 00:01:47,948 INFO L226 Difference]: Without dead ends: 6144 [2018-10-27 00:01:47,981 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 196 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-27 00:01:47,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6144 states. [2018-10-27 00:01:48,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6144 to 6142. [2018-10-27 00:01:48,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6142 states. [2018-10-27 00:01:48,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6142 states to 6142 states and 8490 transitions. [2018-10-27 00:01:48,157 INFO L78 Accepts]: Start accepts. Automaton has 6142 states and 8490 transitions. Word has length 195 [2018-10-27 00:01:48,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:01:48,158 INFO L481 AbstractCegarLoop]: Abstraction has 6142 states and 8490 transitions. [2018-10-27 00:01:48,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-27 00:01:48,158 INFO L276 IsEmpty]: Start isEmpty. Operand 6142 states and 8490 transitions. [2018-10-27 00:01:48,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2018-10-27 00:01:48,167 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:01:48,168 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:01:48,168 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:01:48,168 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:01:48,168 INFO L82 PathProgramCache]: Analyzing trace with hash 138024112, now seen corresponding path program 1 times [2018-10-27 00:01:48,168 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:01:48,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:01:48,170 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:01:48,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:01:48,170 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:01:48,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:01:48,492 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 00:01:48,592 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 60 proven. 212 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-27 00:01:48,592 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:01:48,592 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 00:01:48,593 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 292 with the following transitions: [2018-10-27 00:01:48,593 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [173], [175], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [566], [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], [692], [696], [707], [711], [714], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 00:01:48,600 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 00:01:48,601 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 00:01:49,847 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 00:01:56,691 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 00:01:56,692 INFO L272 AbstractInterpreter]: Visited 109 different actions 314 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 00:01:56,700 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:01:56,700 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 00:02:00,662 INFO L227 lantSequenceWeakener]: Weakened 52 states. On average, predicates are now at 78.32% of their original sizes. [2018-10-27 00:02:00,662 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 00:03:58,724 INFO L415 sIntCurrentIteration]: We unified 290 AI predicates to 290 [2018-10-27 00:03:58,724 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 00:03:58,725 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 00:03:58,725 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-10-27 00:03:58,725 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:03:58,726 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-27 00:03:58,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-27 00:03:58,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2018-10-27 00:03:58,727 INFO L87 Difference]: Start difference. First operand 6142 states and 8490 transitions. Second operand 19 states. Received shutdown request... [2018-10-27 00:04:16,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-27 00:04:16,491 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 00:04:16,498 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 00:04:16,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 12:04:16 BoogieIcfgContainer [2018-10-27 00:04:16,499 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 00:04:16,500 INFO L168 Benchmark]: Toolchain (without parser) took 240409.50 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 580.4 MB. Max. memory is 7.1 GB. [2018-10-27 00:04:16,501 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 00:04:16,501 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1230.40 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. [2018-10-27 00:04:16,502 INFO L168 Benchmark]: Boogie Procedure Inliner took 377.99 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 770.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -886.7 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2018-10-27 00:04:16,503 INFO L168 Benchmark]: Boogie Preprocessor took 207.76 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2018-10-27 00:04:16,504 INFO L168 Benchmark]: RCFGBuilder took 5973.74 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 308.7 MB). Peak memory consumption was 308.7 MB. Max. memory is 7.1 GB. [2018-10-27 00:04:16,505 INFO L168 Benchmark]: TraceAbstraction took 232614.63 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.4 GB). Free memory was 1.9 GB in the beginning and 3.0 GB in the end (delta: -1.1 GB). Peak memory consumption was 268.5 MB. Max. memory is 7.1 GB. [2018-10-27 00:04:16,510 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 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 1230.40 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 377.99 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 770.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -886.7 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 207.76 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5973.74 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 308.7 MB). Peak memory consumption was 308.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 232614.63 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.4 GB). Free memory was 1.9 GB in the beginning and 3.0 GB in the end (delta: -1.1 GB). Peak memory consumption was 268.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 61]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 61). Cancelled while BasicCegarLoop was constructing difference of abstraction (6142states) and FLOYD_HOARE automaton (currently 9 states, 19 states before enhancement),while ReachableStatesComputation was computing reachable states (44 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 232.5s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 94.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1506 SDtfs, 3975 SDslu, 849 SDs, 0 SdLazy, 6912 SolverSat, 1742 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 53.3s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 511 GetRequests, 375 SyntacticMatches, 96 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 119.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6142occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 11.0s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9949507426039045 AbsIntWeakeningRatio, 0.11983471074380166 AbsIntAvgWeakeningVarsNumRemoved, 433.07851239669424 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 4 MinimizatonAttempts, 68 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 715 NumberOfCodeBlocks, 715 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 710 ConstructedInterpolants, 0 QuantifiedInterpolants, 530670 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 155/432 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown