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/Problem16_label14_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 22:40:44,149 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 22:40:44,151 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 22:40:44,164 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 22:40:44,164 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 22:40:44,165 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 22:40:44,167 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 22:40:44,169 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 22:40:44,170 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 22:40:44,171 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 22:40:44,172 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 22:40:44,172 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 22:40:44,173 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 22:40:44,174 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 22:40:44,176 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 22:40:44,176 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 22:40:44,177 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 22:40:44,179 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 22:40:44,181 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 22:40:44,183 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 22:40:44,184 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 22:40:44,185 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 22:40:44,188 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 22:40:44,188 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 22:40:44,188 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 22:40:44,189 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 22:40:44,194 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 22:40:44,195 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 22:40:44,199 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 22:40:44,200 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 22:40:44,200 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 22:40:44,201 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 22:40:44,206 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 [2018-10-23 22:40:44,236 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 22:40:44,237 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 22:40:44,238 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 22:40:44,238 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 22:40:44,238 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 22:40:44,239 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 22:40:44,239 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 22:40:44,239 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 22:40:44,239 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 22:40:44,239 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 22:40:44,243 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 22:40:44,243 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 22:40:44,244 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 22:40:44,244 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 22:40:44,245 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 22:40:44,245 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 22:40:44,246 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 22:40:44,246 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 22:40:44,246 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 22:40:44,246 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 22:40:44,246 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 22:40:44,247 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 22:40:44,248 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 22:40:44,248 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 22:40:44,248 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 22:40:44,249 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 22:40:44,249 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 22:40:44,249 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 22:40:44,249 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 22:40:44,249 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 22:40:44,249 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 22:40:44,250 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 22:40:44,250 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 22:40:44,250 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 22:40:44,303 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 22:40:44,316 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 22:40:44,319 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 22:40:44,321 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 22:40:44,321 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 22:40:44,322 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label14_false-unreach-call.c [2018-10-23 22:40:44,382 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/38a6dce0d/791033c026604ec1a9784b99a7f549e2/FLAG39851ddba [2018-10-23 22:40:45,026 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 22:40:45,027 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label14_false-unreach-call.c [2018-10-23 22:40:45,059 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/38a6dce0d/791033c026604ec1a9784b99a7f549e2/FLAG39851ddba [2018-10-23 22:40:45,078 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/38a6dce0d/791033c026604ec1a9784b99a7f549e2 [2018-10-23 22:40:45,091 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 22:40:45,093 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 22:40:45,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 22:40:45,095 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 22:40:45,100 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 22:40:45,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:40:45" (1/1) ... [2018-10-23 22:40:45,105 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1be946c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:40:45, skipping insertion in model container [2018-10-23 22:40:45,105 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:40:45" (1/1) ... [2018-10-23 22:40:45,115 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 22:40:45,196 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 22:40:46,025 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:40:46,029 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 22:40:46,266 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:40:46,289 INFO L193 MainTranslator]: Completed translation [2018-10-23 22:40:46,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:40:46 WrapperNode [2018-10-23 22:40:46,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 22:40:46,290 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 22:40:46,291 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 22:40:46,291 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 22:40:46,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:40:46" (1/1) ... [2018-10-23 22:40:46,366 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:40:46" (1/1) ... [2018-10-23 22:40:46,645 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 22:40:46,646 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 22:40:46,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 22:40:46,646 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 22:40:46,658 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:40:46" (1/1) ... [2018-10-23 22:40:46,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:40:46" (1/1) ... [2018-10-23 22:40:46,680 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:40:46" (1/1) ... [2018-10-23 22:40:46,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:40:46" (1/1) ... [2018-10-23 22:40:46,752 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:40:46" (1/1) ... [2018-10-23 22:40:46,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:40:46" (1/1) ... [2018-10-23 22:40:46,807 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:40:46" (1/1) ... [2018-10-23 22:40:46,834 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 22:40:46,835 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 22:40:46,835 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 22:40:46,835 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 22:40:46,836 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:40:46" (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 [2018-10-23 22:40:46,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 22:40:46,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 22:40:46,920 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-23 22:40:46,920 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-23 22:40:46,920 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 22:40:46,921 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 22:40:46,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 22:40:46,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 22:40:46,921 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 22:40:46,921 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 22:40:53,673 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 22:40:53,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:40:53 BoogieIcfgContainer [2018-10-23 22:40:53,674 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 22:40:53,675 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 22:40:53,675 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 22:40:53,679 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 22:40:53,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:40:45" (1/3) ... [2018-10-23 22:40:53,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d47d988 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:40:53, skipping insertion in model container [2018-10-23 22:40:53,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:40:46" (2/3) ... [2018-10-23 22:40:53,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d47d988 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:40:53, skipping insertion in model container [2018-10-23 22:40:53,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:40:53" (3/3) ... [2018-10-23 22:40:53,683 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label14_false-unreach-call.c [2018-10-23 22:40:53,693 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 22:40:53,702 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 22:40:53,719 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 22:40:53,760 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 22:40:53,760 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 22:40:53,761 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 22:40:53,761 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 22:40:53,761 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 22:40:53,761 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 22:40:53,761 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 22:40:53,762 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 22:40:53,792 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-23 22:40:53,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-23 22:40:53,800 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:40:53,801 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] [2018-10-23 22:40:53,803 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:40:53,809 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:40:53,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1095563467, now seen corresponding path program 1 times [2018-10-23 22:40:53,812 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:40:53,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:40:53,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:40:53,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:40:53,861 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:40:53,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:40:54,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:40:54,213 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:40:54,213 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 22:40:54,214 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:40:54,226 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 22:40:54,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 22:40:54,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:40:54,272 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-10-23 22:40:58,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:40:58,194 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-10-23 22:40:58,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 22:40:58,201 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2018-10-23 22:40:58,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:40:58,236 INFO L225 Difference]: With dead ends: 1156 [2018-10-23 22:40:58,237 INFO L226 Difference]: Without dead ends: 744 [2018-10-23 22:40:58,251 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:40:58,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-10-23 22:40:58,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-10-23 22:40:58,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-23 22:40:58,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1355 transitions. [2018-10-23 22:40:58,373 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1355 transitions. Word has length 25 [2018-10-23 22:40:58,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:40:58,374 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1355 transitions. [2018-10-23 22:40:58,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 22:40:58,374 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1355 transitions. [2018-10-23 22:40:58,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-23 22:40:58,381 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:40:58,381 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] [2018-10-23 22:40:58,381 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:40:58,382 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:40:58,382 INFO L82 PathProgramCache]: Analyzing trace with hash -826057540, now seen corresponding path program 1 times [2018-10-23 22:40:58,382 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:40:58,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:40:58,385 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:40:58,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:40:58,386 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:40:58,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:40:58,716 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:40:58,716 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:40:58,716 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 22:40:58,717 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:40:58,720 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 22:40:58,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 22:40:58,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-23 22:40:58,721 INFO L87 Difference]: Start difference. First operand 744 states and 1355 transitions. Second operand 5 states. [2018-10-23 22:41:07,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:41:07,737 INFO L93 Difference]: Finished difference Result 2194 states and 4083 transitions. [2018-10-23 22:41:07,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:41:07,738 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2018-10-23 22:41:07,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:41:07,751 INFO L225 Difference]: With dead ends: 2194 [2018-10-23 22:41:07,752 INFO L226 Difference]: Without dead ends: 1456 [2018-10-23 22:41:07,756 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-23 22:41:07,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2018-10-23 22:41:07,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1436. [2018-10-23 22:41:07,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1436 states. [2018-10-23 22:41:07,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2550 transitions. [2018-10-23 22:41:07,816 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2550 transitions. Word has length 95 [2018-10-23 22:41:07,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:41:07,817 INFO L481 AbstractCegarLoop]: Abstraction has 1436 states and 2550 transitions. [2018-10-23 22:41:07,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 22:41:07,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2550 transitions. [2018-10-23 22:41:07,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-23 22:41:07,822 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:41:07,822 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:41:07,823 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:41:07,823 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:41:07,823 INFO L82 PathProgramCache]: Analyzing trace with hash -298596995, now seen corresponding path program 1 times [2018-10-23 22:41:07,823 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:41:07,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:41:07,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:41:07,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:41:07,825 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:41:07,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:41:08,072 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:41:08,073 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:41:08,073 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:41:08,073 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:41:08,074 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:41:08,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:41:08,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:41:08,075 INFO L87 Difference]: Start difference. First operand 1436 states and 2550 transitions. Second operand 6 states. [2018-10-23 22:41:17,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:41:17,313 INFO L93 Difference]: Finished difference Result 3936 states and 7030 transitions. [2018-10-23 22:41:17,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:41:17,314 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2018-10-23 22:41:17,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:41:17,339 INFO L225 Difference]: With dead ends: 3936 [2018-10-23 22:41:17,339 INFO L226 Difference]: Without dead ends: 2506 [2018-10-23 22:41:17,351 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 22:41:17,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2018-10-23 22:41:17,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 2479. [2018-10-23 22:41:17,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2479 states. [2018-10-23 22:41:17,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2479 states to 2479 states and 4000 transitions. [2018-10-23 22:41:17,449 INFO L78 Accepts]: Start accepts. Automaton has 2479 states and 4000 transitions. Word has length 124 [2018-10-23 22:41:17,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:41:17,449 INFO L481 AbstractCegarLoop]: Abstraction has 2479 states and 4000 transitions. [2018-10-23 22:41:17,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:41:17,450 INFO L276 IsEmpty]: Start isEmpty. Operand 2479 states and 4000 transitions. [2018-10-23 22:41:17,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-23 22:41:17,459 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:41:17,460 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:41:17,461 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:41:17,462 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:41:17,462 INFO L82 PathProgramCache]: Analyzing trace with hash 113309953, now seen corresponding path program 1 times [2018-10-23 22:41:17,462 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:41:17,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:41:17,463 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:41:17,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:41:17,463 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:41:17,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:41:17,750 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:41:17,750 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:41:17,751 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:41:17,751 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:41:17,751 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:41:17,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:41:17,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:41:17,752 INFO L87 Difference]: Start difference. First operand 2479 states and 4000 transitions. Second operand 6 states. [2018-10-23 22:41:20,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:41:20,831 INFO L93 Difference]: Finished difference Result 6052 states and 9919 transitions. [2018-10-23 22:41:20,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:41:20,842 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2018-10-23 22:41:20,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:41:20,870 INFO L225 Difference]: With dead ends: 6052 [2018-10-23 22:41:20,871 INFO L226 Difference]: Without dead ends: 3579 [2018-10-23 22:41:20,882 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 22:41:20,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3579 states. [2018-10-23 22:41:20,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3579 to 3547. [2018-10-23 22:41:20,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3547 states. [2018-10-23 22:41:20,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3547 states to 3547 states and 4969 transitions. [2018-10-23 22:41:20,999 INFO L78 Accepts]: Start accepts. Automaton has 3547 states and 4969 transitions. Word has length 142 [2018-10-23 22:41:20,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:41:20,999 INFO L481 AbstractCegarLoop]: Abstraction has 3547 states and 4969 transitions. [2018-10-23 22:41:21,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:41:21,001 INFO L276 IsEmpty]: Start isEmpty. Operand 3547 states and 4969 transitions. [2018-10-23 22:41:21,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-10-23 22:41:21,004 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:41:21,005 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:41:21,005 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:41:21,005 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:41:21,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1758923227, now seen corresponding path program 1 times [2018-10-23 22:41:21,006 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:41:21,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:41:21,007 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:41:21,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:41:21,007 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:41:21,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:41:21,423 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 85 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-23 22:41:21,423 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:41:21,423 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:41:21,424 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 226 with the following transitions: [2018-10-23 22:41:21,427 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [279], [281], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [672], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-23 22:41:21,527 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:41:21,527 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:41:25,227 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:41:25,229 INFO L272 AbstractInterpreter]: Visited 135 different actions 135 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-23 22:41:25,242 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:41:25,242 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:41:27,510 INFO L232 lantSequenceWeakener]: Weakened 217 states. On average, predicates are now at 77.51% of their original sizes. [2018-10-23 22:41:27,510 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:41:28,103 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:41:28,104 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:41:28,105 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2018-10-23 22:41:28,105 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:41:28,106 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-23 22:41:28,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-23 22:41:28,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-23 22:41:28,107 INFO L87 Difference]: Start difference. First operand 3547 states and 4969 transitions. Second operand 8 states. [2018-10-23 22:41:31,534 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:42:35,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:42:35,326 INFO L93 Difference]: Finished difference Result 7428 states and 10352 transitions. [2018-10-23 22:42:35,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-23 22:42:35,326 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 225 [2018-10-23 22:42:35,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:42:35,345 INFO L225 Difference]: With dead ends: 7428 [2018-10-23 22:42:35,346 INFO L226 Difference]: Without dead ends: 3887 [2018-10-23 22:42:35,359 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 226 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-23 22:42:35,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3887 states. [2018-10-23 22:42:35,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3887 to 3885. [2018-10-23 22:42:35,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3885 states. [2018-10-23 22:42:35,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3885 states to 3885 states and 5315 transitions. [2018-10-23 22:42:35,457 INFO L78 Accepts]: Start accepts. Automaton has 3885 states and 5315 transitions. Word has length 225 [2018-10-23 22:42:35,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:42:35,458 INFO L481 AbstractCegarLoop]: Abstraction has 3885 states and 5315 transitions. [2018-10-23 22:42:35,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-23 22:42:35,458 INFO L276 IsEmpty]: Start isEmpty. Operand 3885 states and 5315 transitions. [2018-10-23 22:42:35,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2018-10-23 22:42:35,464 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:42:35,465 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:42:35,465 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:42:35,465 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:42:35,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1713198942, now seen corresponding path program 1 times [2018-10-23 22:42:35,466 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:42:35,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:42:35,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:42:35,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:42:35,467 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:42:35,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:42:35,779 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-23 22:42:35,930 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 126 proven. 115 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-10-23 22:42:35,931 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:42:35,931 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:42:35,931 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 318 with the following transitions: [2018-10-23 22:42:35,932 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [279], [281], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [672], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-23 22:42:35,940 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:42:35,941 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:42:37,383 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:42:51,822 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:42:51,822 INFO L272 AbstractInterpreter]: Visited 139 different actions 537 times. Merged at 5 different actions 14 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-23 22:42:51,828 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:42:51,828 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:42:55,396 INFO L232 lantSequenceWeakener]: Weakened 125 states. On average, predicates are now at 77.92% of their original sizes. [2018-10-23 22:42:55,396 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-23 22:44:38,851 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 22:44:38,865 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 22:44:38,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:44:38 BoogieIcfgContainer [2018-10-23 22:44:38,866 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 22:44:38,867 INFO L168 Benchmark]: Toolchain (without parser) took 233775.34 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -146.5 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-23 22:44:38,868 INFO L168 Benchmark]: CDTParser took 0.19 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. [2018-10-23 22:44:38,874 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1195.60 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-23 22:44:38,875 INFO L168 Benchmark]: Boogie Procedure Inliner took 355.00 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -866.8 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2018-10-23 22:44:38,876 INFO L168 Benchmark]: Boogie Preprocessor took 188.61 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: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. [2018-10-23 22:44:38,880 INFO L168 Benchmark]: RCFGBuilder took 6838.96 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: 258.3 MB). Peak memory consumption was 258.3 MB. Max. memory is 7.1 GB. [2018-10-23 22:44:38,881 INFO L168 Benchmark]: TraceAbstraction took 225191.00 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.9 GB in the beginning and 1.6 GB in the end (delta: 350.2 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-23 22:44:38,891 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 1195.60 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 355.00 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -866.8 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 188.61 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: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6838.96 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: 258.3 MB). Peak memory consumption was 258.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 225191.00 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.9 GB in the beginning and 1.6 GB in the end (delta: 350.2 MB). Peak memory consumption was 2.0 GB. 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 analyzing trace of length 318 with TraceHistMax 4,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 16 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 225.1s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 92.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 803 SDtfs, 5674 SDslu, 751 SDs, 0 SdLazy, 8767 SolverSat, 2362 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 55.8s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 260 GetRequests, 226 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3885occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 19.7s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9954743692968331 AbsIntWeakeningRatio, 0.10740740740740741 AbsIntAvgWeakeningVarsNumRemoved, 388.2888888888889 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 81 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 611 NumberOfCodeBlocks, 611 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 606 ConstructedInterpolants, 0 QuantifiedInterpolants, 302233 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 144/160 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown