java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label21_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 01:43:09,116 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 01:43:09,118 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 01:43:09,131 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 01:43:09,131 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 01:43:09,133 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 01:43:09,134 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 01:43:09,136 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 01:43:09,137 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 01:43:09,138 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 01:43:09,140 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 01:43:09,140 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 01:43:09,142 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 01:43:09,145 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 01:43:09,150 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 01:43:09,151 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 01:43:09,152 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 01:43:09,157 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 01:43:09,159 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 01:43:09,161 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 01:43:09,162 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 01:43:09,163 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 01:43:09,166 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 01:43:09,184 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 01:43:09,212 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 01:43:09,212 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 01:43:09,213 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 01:43:09,213 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 01:43:09,213 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 01:43:09,213 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 01:43:09,213 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 01:43:09,214 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 01:43:09,214 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 01:43:09,214 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 01:43:09,214 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 01:43:09,214 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 01:43:09,215 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 01:43:09,215 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 01:43:09,215 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 01:43:09,216 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 01:43:09,216 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 01:43:09,216 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 01:43:09,216 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 01:43:09,216 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 01:43:09,217 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 01:43:09,217 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 01:43:09,217 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 01:43:09,217 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 01:43:09,217 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 01:43:09,218 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 01:43:09,218 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 01:43:09,218 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 01:43:09,218 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 01:43:09,218 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 01:43:09,219 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 01:43:09,219 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 01:43:09,219 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 01:43:09,219 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 01:43:09,273 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 01:43:09,290 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 01:43:09,295 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 01:43:09,296 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 01:43:09,297 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 01:43:09,298 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label21_true-unreach-call.c [2018-10-24 01:43:09,374 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a2a878855/8ce5737614ff43048d0975897948847d/FLAG292a101b1 [2018-10-24 01:43:10,116 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 01:43:10,117 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label21_true-unreach-call.c [2018-10-24 01:43:10,147 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a2a878855/8ce5737614ff43048d0975897948847d/FLAG292a101b1 [2018-10-24 01:43:10,170 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a2a878855/8ce5737614ff43048d0975897948847d [2018-10-24 01:43:10,185 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 01:43:10,188 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 01:43:10,189 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 01:43:10,189 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 01:43:10,195 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 01:43:10,196 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:43:10" (1/1) ... [2018-10-24 01:43:10,200 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e6b502b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:43:10, skipping insertion in model container [2018-10-24 01:43:10,200 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:43:10" (1/1) ... [2018-10-24 01:43:10,212 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 01:43:10,315 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 01:43:11,144 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:43:11,149 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 01:43:11,500 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:43:11,522 INFO L193 MainTranslator]: Completed translation [2018-10-24 01:43:11,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:43:11 WrapperNode [2018-10-24 01:43:11,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 01:43:11,524 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 01:43:11,524 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 01:43:11,525 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 01:43:11,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:43:11" (1/1) ... [2018-10-24 01:43:11,589 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:43:11" (1/1) ... [2018-10-24 01:43:11,916 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 01:43:11,916 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 01:43:11,917 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 01:43:11,917 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 01:43:11,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:43:11" (1/1) ... [2018-10-24 01:43:11,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:43:11" (1/1) ... [2018-10-24 01:43:11,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:43:11" (1/1) ... [2018-10-24 01:43:11,947 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:43:11" (1/1) ... [2018-10-24 01:43:12,042 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:43:11" (1/1) ... [2018-10-24 01:43:12,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:43:11" (1/1) ... [2018-10-24 01:43:12,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:43:11" (1/1) ... [2018-10-24 01:43:12,142 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 01:43:12,142 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 01:43:12,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 01:43:12,143 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 01:43:12,144 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:43:11" (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 01:43:12,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 01:43:12,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 01:43:12,217 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 01:43:12,218 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 01:43:12,219 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 01:43:12,219 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 01:43:12,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 01:43:12,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 01:43:12,219 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 01:43:12,220 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 01:43:19,981 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 01:43:19,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:43:19 BoogieIcfgContainer [2018-10-24 01:43:19,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 01:43:19,984 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 01:43:19,984 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 01:43:19,988 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 01:43:19,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:43:10" (1/3) ... [2018-10-24 01:43:19,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a92f252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:43:19, skipping insertion in model container [2018-10-24 01:43:19,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:43:11" (2/3) ... [2018-10-24 01:43:19,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a92f252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:43:19, skipping insertion in model container [2018-10-24 01:43:19,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:43:19" (3/3) ... [2018-10-24 01:43:19,992 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label21_true-unreach-call.c [2018-10-24 01:43:20,002 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 01:43:20,011 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 01:43:20,030 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 01:43:20,081 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 01:43:20,081 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 01:43:20,081 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 01:43:20,082 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 01:43:20,082 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 01:43:20,082 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 01:43:20,082 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 01:43:20,082 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 01:43:20,140 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-24 01:43:20,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-24 01:43:20,154 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:43:20,156 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:43:20,158 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:43:20,168 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:43:20,168 INFO L82 PathProgramCache]: Analyzing trace with hash -191617687, now seen corresponding path program 1 times [2018-10-24 01:43:20,171 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:43:20,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:43:20,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:43:20,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:43:20,237 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:43:20,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:43:20,809 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-24 01:43:20,894 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 01:43:20,899 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:43:20,900 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 01:43:20,900 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:43:20,914 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 01:43:20,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 01:43:20,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:43:20,957 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-10-24 01:43:28,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:43:28,525 INFO L93 Difference]: Finished difference Result 1550 states and 2835 transitions. [2018-10-24 01:43:28,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 01:43:28,528 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2018-10-24 01:43:28,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:43:28,558 INFO L225 Difference]: With dead ends: 1550 [2018-10-24 01:43:28,559 INFO L226 Difference]: Without dead ends: 1106 [2018-10-24 01:43:28,572 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:43:28,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2018-10-24 01:43:28,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 762. [2018-10-24 01:43:28,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2018-10-24 01:43:28,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1263 transitions. [2018-10-24 01:43:28,686 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1263 transitions. Word has length 67 [2018-10-24 01:43:28,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:43:28,687 INFO L481 AbstractCegarLoop]: Abstraction has 762 states and 1263 transitions. [2018-10-24 01:43:28,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 01:43:28,688 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1263 transitions. [2018-10-24 01:43:28,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-24 01:43:28,697 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:43:28,697 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 01:43:28,697 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:43:28,698 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:43:28,698 INFO L82 PathProgramCache]: Analyzing trace with hash 2147224692, now seen corresponding path program 1 times [2018-10-24 01:43:28,698 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:43:28,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:43:28,699 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:43:28,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:43:28,700 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:43:28,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:43:29,048 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:43:29,049 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:43:29,049 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 01:43:29,049 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:43:29,051 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 01:43:29,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 01:43:29,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 01:43:29,052 INFO L87 Difference]: Start difference. First operand 762 states and 1263 transitions. Second operand 5 states. [2018-10-24 01:43:40,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:43:40,534 INFO L93 Difference]: Finished difference Result 2245 states and 3758 transitions. [2018-10-24 01:43:40,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 01:43:40,535 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2018-10-24 01:43:40,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:43:40,550 INFO L225 Difference]: With dead ends: 2245 [2018-10-24 01:43:40,551 INFO L226 Difference]: Without dead ends: 1489 [2018-10-24 01:43:40,556 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 01:43:40,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2018-10-24 01:43:40,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1457. [2018-10-24 01:43:40,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1457 states. [2018-10-24 01:43:40,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 2152 transitions. [2018-10-24 01:43:40,649 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 2152 transitions. Word has length 140 [2018-10-24 01:43:40,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:43:40,650 INFO L481 AbstractCegarLoop]: Abstraction has 1457 states and 2152 transitions. [2018-10-24 01:43:40,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 01:43:40,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 2152 transitions. [2018-10-24 01:43:40,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-24 01:43:40,661 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:43:40,661 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 01:43:40,662 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:43:40,662 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:43:40,662 INFO L82 PathProgramCache]: Analyzing trace with hash 245901444, now seen corresponding path program 1 times [2018-10-24 01:43:40,662 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:43:40,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:43:40,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:43:40,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:43:40,668 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:43:40,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:43:41,004 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:43:41,005 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:43:41,007 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 01:43:41,007 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:43:41,010 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 01:43:41,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 01:43:41,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:43:41,011 INFO L87 Difference]: Start difference. First operand 1457 states and 2152 transitions. Second operand 4 states. [2018-10-24 01:43:46,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:43:46,466 INFO L93 Difference]: Finished difference Result 5392 states and 8275 transitions. [2018-10-24 01:43:46,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 01:43:46,467 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2018-10-24 01:43:46,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:43:46,494 INFO L225 Difference]: With dead ends: 5392 [2018-10-24 01:43:46,494 INFO L226 Difference]: Without dead ends: 3941 [2018-10-24 01:43:46,509 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:43:46,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3941 states. [2018-10-24 01:43:46,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3941 to 3939. [2018-10-24 01:43:46,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3939 states. [2018-10-24 01:43:46,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3939 states to 3939 states and 5427 transitions. [2018-10-24 01:43:46,632 INFO L78 Accepts]: Start accepts. Automaton has 3939 states and 5427 transitions. Word has length 148 [2018-10-24 01:43:46,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:43:46,633 INFO L481 AbstractCegarLoop]: Abstraction has 3939 states and 5427 transitions. [2018-10-24 01:43:46,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 01:43:46,633 INFO L276 IsEmpty]: Start isEmpty. Operand 3939 states and 5427 transitions. [2018-10-24 01:43:46,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-24 01:43:46,645 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:43:46,646 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 01:43:46,646 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:43:46,646 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:43:46,647 INFO L82 PathProgramCache]: Analyzing trace with hash -724599134, now seen corresponding path program 1 times [2018-10-24 01:43:46,647 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:43:46,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:43:46,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:43:46,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:43:46,649 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:43:46,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:43:47,017 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:43:47,434 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 120 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 01:43:47,434 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:43:47,434 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:43:47,435 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 225 with the following transitions: [2018-10-24 01:43:47,439 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [509], [511], [514], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [633], [638], [640], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 01:43:47,537 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:43:47,538 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:43:49,185 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:43:49,187 INFO L272 AbstractInterpreter]: Visited 90 different actions 90 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 01:43:49,204 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:43:49,204 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:43:51,023 INFO L232 lantSequenceWeakener]: Weakened 214 states. On average, predicates are now at 78.41% of their original sizes. [2018-10-24 01:43:51,023 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:43:51,274 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:43:51,275 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:43:51,275 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 01:43:51,275 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:43:51,276 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 01:43:51,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 01:43:51,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 01:43:51,277 INFO L87 Difference]: Start difference. First operand 3939 states and 5427 transitions. Second operand 7 states. [2018-10-24 01:43:53,588 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 01:44:23,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:44:23,293 INFO L93 Difference]: Finished difference Result 8182 states and 11236 transitions. [2018-10-24 01:44:23,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:44:23,294 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 224 [2018-10-24 01:44:23,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:44:23,315 INFO L225 Difference]: With dead ends: 8182 [2018-10-24 01:44:23,316 INFO L226 Difference]: Without dead ends: 4249 [2018-10-24 01:44:23,334 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 224 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 01:44:23,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4249 states. [2018-10-24 01:44:23,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4249 to 4247. [2018-10-24 01:44:23,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4247 states. [2018-10-24 01:44:23,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4247 states to 4247 states and 5744 transitions. [2018-10-24 01:44:23,449 INFO L78 Accepts]: Start accepts. Automaton has 4247 states and 5744 transitions. Word has length 224 [2018-10-24 01:44:23,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:44:23,449 INFO L481 AbstractCegarLoop]: Abstraction has 4247 states and 5744 transitions. [2018-10-24 01:44:23,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 01:44:23,450 INFO L276 IsEmpty]: Start isEmpty. Operand 4247 states and 5744 transitions. [2018-10-24 01:44:23,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-10-24 01:44:23,461 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:44:23,462 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 01:44:23,462 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:44:23,462 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:44:23,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1857521012, now seen corresponding path program 1 times [2018-10-24 01:44:23,463 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:44:23,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:44:23,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:44:23,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:44:23,464 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:44:23,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:44:23,791 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:44:24,329 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 186 proven. 201 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-24 01:44:24,329 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:44:24,330 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:44:24,330 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 321 with the following transitions: [2018-10-24 01:44:24,331 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [509], [511], [514], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [633], [638], [640], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 01:44:24,344 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:44:24,344 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:44:25,565 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 01:44:30,408 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:44:30,408 INFO L272 AbstractInterpreter]: Visited 105 different actions 302 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 01:44:30,414 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:44:30,414 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:44:34,019 INFO L232 lantSequenceWeakener]: Weakened 48 states. On average, predicates are now at 78.31% of their original sizes. [2018-10-24 01:44:34,019 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:46:07,868 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:46:07,869 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:46:07,869 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-10-24 01:46:07,869 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:46:07,870 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-24 01:46:07,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-24 01:46:07,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2018-10-24 01:46:07,871 INFO L87 Difference]: Start difference. First operand 4247 states and 5744 transitions. Second operand 17 states. Received shutdown request... [2018-10-24 01:47:13,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-24 01:47:13,288 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 01:47:13,293 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 01:47:13,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:47:13 BoogieIcfgContainer [2018-10-24 01:47:13,294 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 01:47:13,295 INFO L168 Benchmark]: Toolchain (without parser) took 243109.04 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -428.1 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-24 01:47:13,296 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 01:47:13,297 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1334.66 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-10-24 01:47:13,298 INFO L168 Benchmark]: Boogie Procedure Inliner took 391.93 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 738.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -855.4 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2018-10-24 01:47:13,299 INFO L168 Benchmark]: Boogie Preprocessor took 225.47 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: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2018-10-24 01:47:13,300 INFO L168 Benchmark]: RCFGBuilder took 7840.65 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 316.3 MB). Peak memory consumption was 316.3 MB. Max. memory is 7.1 GB. [2018-10-24 01:47:13,301 INFO L168 Benchmark]: TraceAbstraction took 233310.11 ms. Allocated memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: 1.5 GB). Free memory was 1.8 GB in the beginning and 1.8 GB in the end (delta: -8.5 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-24 01:47:13,308 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1334.66 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 391.93 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 738.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -855.4 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 225.47 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: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7840.65 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 316.3 MB). Peak memory consumption was 316.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 233310.11 ms. Allocated memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: 1.5 GB). Free memory was 1.8 GB in the beginning and 1.8 GB in the end (delta: -8.5 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 187]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 187). Cancelled while BasicCegarLoop was constructing difference of abstraction (4247states) and FLOYD_HOARE automaton (currently 20 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (301 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 233.2s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 122.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1512 SDtfs, 4723 SDslu, 770 SDs, 0 SdLazy, 7041 SolverSat, 1743 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 54.9s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 573 GetRequests, 416 SyntacticMatches, 116 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 732 ImplicationChecksByTransitivity, 98.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4247occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 7.8s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9956515054280978 AbsIntWeakeningRatio, 0.11070110701107011 AbsIntAvgWeakeningVarsNumRemoved, 593.6789667896679 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 380 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 899 NumberOfCodeBlocks, 899 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 894 ConstructedInterpolants, 0 QuantifiedInterpolants, 615769 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 449/715 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown