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/Problem14_label49_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:42:43,182 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:42:43,185 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:42:43,197 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:42:43,197 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:42:43,198 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:42:43,200 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:42:43,201 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:42:43,203 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:42:43,204 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:42:43,205 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:42:43,205 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:42:43,206 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:42:43,207 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:42:43,209 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:42:43,209 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:42:43,210 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:42:43,212 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:42:43,214 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:42:43,216 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:42:43,217 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:42:43,218 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:42:43,221 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 21:42:43,221 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 21:42:43,221 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 21:42:43,222 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 21:42:43,223 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 21:42:43,224 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 21:42:43,225 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 21:42:43,226 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 21:42:43,226 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 21:42:43,227 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 21:42:43,232 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 21:42:43,248 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:42:43,248 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:42:43,249 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:42:43,249 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:42:43,249 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:42:43,250 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:42:43,250 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:42:43,250 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:42:43,250 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:42:43,250 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:42:43,250 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:42:43,251 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:42:43,251 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:42:43,251 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:42:43,252 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:42:43,252 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:42:43,252 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:42:43,252 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:42:43,252 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:42:43,253 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:42:43,253 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:42:43,253 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:42:43,253 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:42:43,253 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:42:43,254 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:42:43,254 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:42:43,254 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:42:43,254 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:42:43,254 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:42:43,255 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:42:43,255 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:42:43,255 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:42:43,255 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:42:43,255 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:42:43,300 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:42:43,321 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:42:43,326 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:42:43,327 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:42:43,328 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:42:43,329 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label49_true-unreach-call_false-termination.c [2018-10-24 21:42:43,398 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/bb4038be9/bc0155d966a347e0a0f79a27f7dba796/FLAG135814081 [2018-10-24 21:42:44,049 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:42:44,051 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label49_true-unreach-call_false-termination.c [2018-10-24 21:42:44,068 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/bb4038be9/bc0155d966a347e0a0f79a27f7dba796/FLAG135814081 [2018-10-24 21:42:44,088 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/bb4038be9/bc0155d966a347e0a0f79a27f7dba796 [2018-10-24 21:42:44,106 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:42:44,108 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:42:44,109 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:42:44,109 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:42:44,114 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:42:44,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:42:44" (1/1) ... [2018-10-24 21:42:44,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20bf5984 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:44, skipping insertion in model container [2018-10-24 21:42:44,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:42:44" (1/1) ... [2018-10-24 21:42:44,130 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:42:44,191 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:42:44,633 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:42:44,637 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:42:44,837 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:42:44,862 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:42:44,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:44 WrapperNode [2018-10-24 21:42:44,862 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:42:44,863 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:42:44,864 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:42:44,864 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:42:44,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:44" (1/1) ... [2018-10-24 21:42:44,912 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:44" (1/1) ... [2018-10-24 21:42:45,127 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:42:45,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:42:45,128 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:42:45,128 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:42:45,140 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:44" (1/1) ... [2018-10-24 21:42:45,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:44" (1/1) ... [2018-10-24 21:42:45,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:44" (1/1) ... [2018-10-24 21:42:45,157 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:44" (1/1) ... [2018-10-24 21:42:45,199 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:44" (1/1) ... [2018-10-24 21:42:45,213 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:44" (1/1) ... [2018-10-24 21:42:45,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:44" (1/1) ... [2018-10-24 21:42:45,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:42:45,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:42:45,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:42:45,237 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:42:45,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:42:45,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:42:45,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:42:45,311 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:42:45,311 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:42:45,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:42:45,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:42:45,314 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:42:45,315 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:42:48,807 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:42:48,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:42:48 BoogieIcfgContainer [2018-10-24 21:42:48,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:42:48,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:42:48,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:42:48,813 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:42:48,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:42:44" (1/3) ... [2018-10-24 21:42:48,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f939b3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:42:48, skipping insertion in model container [2018-10-24 21:42:48,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:42:44" (2/3) ... [2018-10-24 21:42:48,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f939b3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:42:48, skipping insertion in model container [2018-10-24 21:42:48,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:42:48" (3/3) ... [2018-10-24 21:42:48,818 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label49_true-unreach-call_false-termination.c [2018-10-24 21:42:48,829 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:42:48,839 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:42:48,858 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:42:48,899 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:42:48,899 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:42:48,899 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:42:48,900 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:42:48,900 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:42:48,900 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:42:48,900 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:42:48,900 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:42:48,927 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-24 21:42:48,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-24 21:42:48,936 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:42:48,937 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] [2018-10-24 21:42:48,940 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:42:48,946 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:42:48,947 INFO L82 PathProgramCache]: Analyzing trace with hash -825405036, now seen corresponding path program 1 times [2018-10-24 21:42:48,949 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:42:49,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:42:49,000 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:42:49,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:42:49,000 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:42:49,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:42:49,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:42:49,499 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:42:49,500 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:42:49,500 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:42:49,507 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:42:49,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:42:49,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:42:49,528 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 4 states. [2018-10-24 21:42:52,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:42:52,551 INFO L93 Difference]: Finished difference Result 894 states and 1611 transitions. [2018-10-24 21:42:52,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:42:52,553 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2018-10-24 21:42:52,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:42:52,584 INFO L225 Difference]: With dead ends: 894 [2018-10-24 21:42:52,585 INFO L226 Difference]: Without dead ends: 633 [2018-10-24 21:42:52,594 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 21:42:52,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2018-10-24 21:42:52,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2018-10-24 21:42:52,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2018-10-24 21:42:52,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 962 transitions. [2018-10-24 21:42:52,697 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 962 transitions. Word has length 66 [2018-10-24 21:42:52,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:42:52,698 INFO L481 AbstractCegarLoop]: Abstraction has 633 states and 962 transitions. [2018-10-24 21:42:52,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:42:52,699 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 962 transitions. [2018-10-24 21:42:52,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-10-24 21:42:52,713 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:42:52,713 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:42:52,714 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:42:52,714 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:42:52,714 INFO L82 PathProgramCache]: Analyzing trace with hash 965459243, now seen corresponding path program 1 times [2018-10-24 21:42:52,714 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:42:52,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:42:52,716 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:42:52,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:42:52,716 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:42:52,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:42:53,107 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:42:53,108 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:42:53,108 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:42:53,108 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:42:53,110 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:42:53,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:42:53,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:42:53,111 INFO L87 Difference]: Start difference. First operand 633 states and 962 transitions. Second operand 4 states. [2018-10-24 21:42:56,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:42:56,384 INFO L93 Difference]: Finished difference Result 2358 states and 3743 transitions. [2018-10-24 21:42:56,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:42:56,384 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 179 [2018-10-24 21:42:56,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:42:56,397 INFO L225 Difference]: With dead ends: 2358 [2018-10-24 21:42:56,398 INFO L226 Difference]: Without dead ends: 1731 [2018-10-24 21:42:56,405 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:42:56,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2018-10-24 21:42:56,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1731. [2018-10-24 21:42:56,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1731 states. [2018-10-24 21:42:56,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2521 transitions. [2018-10-24 21:42:56,482 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2521 transitions. Word has length 179 [2018-10-24 21:42:56,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:42:56,483 INFO L481 AbstractCegarLoop]: Abstraction has 1731 states and 2521 transitions. [2018-10-24 21:42:56,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:42:56,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2521 transitions. [2018-10-24 21:42:56,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-10-24 21:42:56,494 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:42:56,494 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, 2, 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] [2018-10-24 21:42:56,495 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:42:56,495 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:42:56,495 INFO L82 PathProgramCache]: Analyzing trace with hash 747473196, now seen corresponding path program 1 times [2018-10-24 21:42:56,495 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:42:56,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:42:56,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:42:56,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:42:56,497 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:42:56,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:42:57,155 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:42:57,155 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:42:57,156 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:42:57,158 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 263 with the following transitions: [2018-10-24 21:42:57,164 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], [429], [431], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [662], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 21:42:57,279 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:42:57,279 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:42:59,630 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:42:59,631 INFO L272 AbstractInterpreter]: Visited 117 different actions 117 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 21:42:59,666 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:42:59,666 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:43:02,174 INFO L232 lantSequenceWeakener]: Weakened 254 states. On average, predicates are now at 78.21% of their original sizes. [2018-10-24 21:43:02,175 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:43:02,656 INFO L413 sIntCurrentIteration]: We have 261 unified AI predicates [2018-10-24 21:43:02,658 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:43:02,659 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:43:02,659 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 21:43:02,659 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:43:02,660 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 21:43:02,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 21:43:02,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 21:43:02,661 INFO L87 Difference]: Start difference. First operand 1731 states and 2521 transitions. Second operand 7 states. [2018-10-24 21:43:04,965 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:43:31,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:43:31,497 INFO L93 Difference]: Finished difference Result 3641 states and 5276 transitions. [2018-10-24 21:43:31,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:43:31,498 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 262 [2018-10-24 21:43:31,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:43:31,511 INFO L225 Difference]: With dead ends: 3641 [2018-10-24 21:43:31,511 INFO L226 Difference]: Without dead ends: 1916 [2018-10-24 21:43:31,517 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 262 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:43:31,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1916 states. [2018-10-24 21:43:31,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1916 to 1914. [2018-10-24 21:43:31,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1914 states. [2018-10-24 21:43:31,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2711 transitions. [2018-10-24 21:43:31,588 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2711 transitions. Word has length 262 [2018-10-24 21:43:31,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:43:31,590 INFO L481 AbstractCegarLoop]: Abstraction has 1914 states and 2711 transitions. [2018-10-24 21:43:31,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 21:43:31,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2711 transitions. [2018-10-24 21:43:31,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-10-24 21:43:31,600 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:43:31,601 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:43:31,601 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:43:31,601 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:43:31,602 INFO L82 PathProgramCache]: Analyzing trace with hash -178374725, now seen corresponding path program 1 times [2018-10-24 21:43:31,602 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:43:31,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:43:31,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:43:31,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:43:31,604 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:43:31,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:43:32,544 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 264 proven. 161 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:43:32,544 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:43:32,544 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:43:32,545 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 348 with the following transitions: [2018-10-24 21:43:32,545 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], [429], [431], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [662], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 21:43:32,554 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:43:32,554 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:43:37,135 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:43:37,135 INFO L272 AbstractInterpreter]: Visited 121 different actions 236 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 21:43:37,144 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:43:37,144 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:43:39,264 INFO L232 lantSequenceWeakener]: Weakened 110 states. On average, predicates are now at 78.26% of their original sizes. [2018-10-24 21:43:39,264 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:44:04,518 INFO L413 sIntCurrentIteration]: We have 346 unified AI predicates [2018-10-24 21:44:04,518 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:44:04,518 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:44:04,519 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [12] total 28 [2018-10-24 21:44:04,519 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:44:04,520 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-24 21:44:04,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-24 21:44:04,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2018-10-24 21:44:04,521 INFO L87 Difference]: Start difference. First operand 1914 states and 2711 transitions. Second operand 18 states. [2018-10-24 21:44:46,839 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:46:26,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:46:26,335 INFO L93 Difference]: Finished difference Result 4590 states and 6412 transitions. [2018-10-24 21:46:26,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-24 21:46:26,335 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 347 [2018-10-24 21:46:26,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:46:26,352 INFO L225 Difference]: With dead ends: 4590 [2018-10-24 21:46:26,352 INFO L226 Difference]: Without dead ends: 2865 [2018-10-24 21:46:26,358 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 352 GetRequests, 290 SyntacticMatches, 40 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 25.5s TimeCoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2018-10-24 21:46:26,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states. [2018-10-24 21:46:26,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2865 to 2620. [2018-10-24 21:46:26,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2620 states. [2018-10-24 21:46:26,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2620 states to 2620 states and 3452 transitions. [2018-10-24 21:46:26,480 INFO L78 Accepts]: Start accepts. Automaton has 2620 states and 3452 transitions. Word has length 347 [2018-10-24 21:46:26,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:46:26,481 INFO L481 AbstractCegarLoop]: Abstraction has 2620 states and 3452 transitions. [2018-10-24 21:46:26,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-24 21:46:26,481 INFO L276 IsEmpty]: Start isEmpty. Operand 2620 states and 3452 transitions. [2018-10-24 21:46:26,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2018-10-24 21:46:26,492 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:46:26,493 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:46:26,493 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:46:26,493 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:46:26,493 INFO L82 PathProgramCache]: Analyzing trace with hash 896568615, now seen corresponding path program 1 times [2018-10-24 21:46:26,494 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:46:26,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:46:26,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:46:26,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:46:26,495 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:46:26,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:46:26,826 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-24 21:46:27,075 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-10-24 21:46:27,491 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 236 proven. 166 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-10-24 21:46:27,491 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:46:27,492 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:46:27,492 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 374 with the following transitions: [2018-10-24 21:46:27,492 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], [429], [431], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [662], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 21:46:27,498 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:46:27,498 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:46:32,378 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:46:32,379 INFO L272 AbstractInterpreter]: Visited 121 different actions 236 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 21:46:32,388 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:46:32,388 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:46:35,538 INFO L232 lantSequenceWeakener]: Weakened 241 states. On average, predicates are now at 78.37% of their original sizes. [2018-10-24 21:46:35,538 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:46:42,605 INFO L413 sIntCurrentIteration]: We have 372 unified AI predicates [2018-10-24 21:46:42,606 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:46:42,606 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:46:42,606 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [8] total 23 [2018-10-24 21:46:42,606 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:46:42,607 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-24 21:46:42,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-24 21:46:42,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2018-10-24 21:46:42,608 INFO L87 Difference]: Start difference. First operand 2620 states and 3452 transitions. Second operand 17 states. Received shutdown request... [2018-10-24 21:46:48,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 21:46:48,200 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:46:48,205 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:46:48,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:46:48 BoogieIcfgContainer [2018-10-24 21:46:48,205 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:46:48,206 INFO L168 Benchmark]: Toolchain (without parser) took 244099.07 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -415.0 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-24 21:46:48,207 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:46:48,208 INFO L168 Benchmark]: CACSL2BoogieTranslator took 753.63 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 21:46:48,209 INFO L168 Benchmark]: Boogie Procedure Inliner took 264.25 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 751.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -833.6 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-24 21:46:48,210 INFO L168 Benchmark]: Boogie Preprocessor took 108.15 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: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2018-10-24 21:46:48,210 INFO L168 Benchmark]: RCFGBuilder took 3571.66 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: 120.1 MB). Peak memory consumption was 120.1 MB. Max. memory is 7.1 GB. [2018-10-24 21:46:48,211 INFO L168 Benchmark]: TraceAbstraction took 239396.17 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 1.8 GB in the end (delta: 242.6 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-24 21:46:48,216 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 753.63 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 264.25 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 751.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -833.6 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.15 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: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3571.66 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: 120.1 MB). Peak memory consumption was 120.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 239396.17 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 1.8 GB in the end (delta: 242.6 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 181]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 181). Cancelled while BasicCegarLoop was constructing difference of abstraction (2620states) and FLOYD_HOARE automaton (currently 9 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (17 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 239.3s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 182.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 768 SDtfs, 3897 SDslu, 785 SDs, 0 SdLazy, 5868 SolverSat, 964 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 79.7s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 1002 GetRequests, 909 SyntacticMatches, 41 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 34.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2620occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 12.0s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9960381785613832 AbsIntWeakeningRatio, 0.09193054136874361 AbsIntAvgWeakeningVarsNumRemoved, 493.4555669050051 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 247 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 1227 NumberOfCodeBlocks, 1227 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 1222 ConstructedInterpolants, 0 QuantifiedInterpolants, 2374999 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 818/1147 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown