java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 00:00:44,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 00:00:44,221 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 00:00:44,238 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 00:00:44,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 00:00:44,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 00:00:44,241 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 00:00:44,243 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 00:00:44,245 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 00:00:44,246 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 00:00:44,247 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 00:00:44,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 00:00:44,248 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 00:00:44,249 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 00:00:44,250 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 00:00:44,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 00:00:44,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 00:00:44,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 00:00:44,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 00:00:44,257 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 00:00:44,258 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 00:00:44,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 00:00:44,261 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 00:00:44,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 00:00:44,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 00:00:44,264 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 00:00:44,264 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 00:00:44,265 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 00:00:44,265 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 00:00:44,267 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 00:00:44,267 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 00:00:44,268 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 00:00:44,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 00:00:44,269 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 00:00:44,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 00:00:44,270 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 00:00:44,271 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 00:00:44,271 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 00:00:44,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 00:00:44,272 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 00:00:44,273 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 00:00:44,274 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 00:00:44,289 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 00:00:44,289 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 00:00:44,290 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 00:00:44,290 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 00:00:44,291 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 00:00:44,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 00:00:44,291 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 00:00:44,291 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 00:00:44,291 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 00:00:44,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 00:00:44,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 00:00:44,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 00:00:44,292 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 00:00:44,292 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 00:00:44,293 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 00:00:44,293 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 00:00:44,293 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 00:00:44,293 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 00:00:44,293 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 00:00:44,294 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 00:00:44,294 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 00:00:44,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 00:00:44,294 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 00:00:44,294 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 00:00:44,295 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 00:00:44,295 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 00:00:44,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 00:00:44,295 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 00:00:44,295 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 00:00:44,593 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 00:00:44,611 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 00:00:44,617 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 00:00:44,618 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 00:00:44,619 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 00:00:44,620 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label11.c [2019-10-15 00:00:44,703 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dffa860a8/421fe20149744689aadd60bcdb6fbebf/FLAGbd18cdc00 [2019-10-15 00:00:45,317 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 00:00:45,317 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label11.c [2019-10-15 00:00:45,330 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dffa860a8/421fe20149744689aadd60bcdb6fbebf/FLAGbd18cdc00 [2019-10-15 00:00:45,545 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dffa860a8/421fe20149744689aadd60bcdb6fbebf [2019-10-15 00:00:45,556 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 00:00:45,558 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 00:00:45,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 00:00:45,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 00:00:45,563 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 00:00:45,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:00:45" (1/1) ... [2019-10-15 00:00:45,567 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59906cd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:45, skipping insertion in model container [2019-10-15 00:00:45,568 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:00:45" (1/1) ... [2019-10-15 00:00:45,575 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 00:00:45,632 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 00:00:46,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 00:00:46,069 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 00:00:46,346 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 00:00:46,376 INFO L192 MainTranslator]: Completed translation [2019-10-15 00:00:46,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:46 WrapperNode [2019-10-15 00:00:46,377 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 00:00:46,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 00:00:46,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 00:00:46,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 00:00:46,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:46" (1/1) ... [2019-10-15 00:00:46,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:46" (1/1) ... [2019-10-15 00:00:46,413 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:46" (1/1) ... [2019-10-15 00:00:46,413 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:46" (1/1) ... [2019-10-15 00:00:46,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:46" (1/1) ... [2019-10-15 00:00:46,485 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:46" (1/1) ... [2019-10-15 00:00:46,503 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:46" (1/1) ... [2019-10-15 00:00:46,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 00:00:46,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 00:00:46,523 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 00:00:46,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 00:00:46,532 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2019-10-15 00:00:46,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 00:00:46,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 00:00:46,608 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-15 00:00:46,608 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 00:00:46,608 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-15 00:00:46,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 00:00:46,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 00:00:46,610 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 00:00:46,610 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 00:00:46,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 00:00:46,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 00:00:47,897 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 00:00:47,897 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 00:00:47,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:00:47 BoogieIcfgContainer [2019-10-15 00:00:47,899 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 00:00:47,900 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 00:00:47,901 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 00:00:47,904 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 00:00:47,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:00:45" (1/3) ... [2019-10-15 00:00:47,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67b27868 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:00:47, skipping insertion in model container [2019-10-15 00:00:47,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:00:46" (2/3) ... [2019-10-15 00:00:47,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67b27868 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:00:47, skipping insertion in model container [2019-10-15 00:00:47,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:00:47" (3/3) ... [2019-10-15 00:00:47,908 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label11.c [2019-10-15 00:00:47,921 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 00:00:47,932 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 00:00:47,946 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 00:00:47,995 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 00:00:47,995 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 00:00:47,995 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 00:00:47,996 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 00:00:47,996 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 00:00:47,996 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 00:00:47,996 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 00:00:47,997 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 00:00:48,031 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2019-10-15 00:00:48,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-10-15 00:00:48,048 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:00:48,049 INFO L380 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] [2019-10-15 00:00:48,051 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:00:48,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:00:48,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1918215546, now seen corresponding path program 1 times [2019-10-15 00:00:48,067 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:00:48,068 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37407048] [2019-10-15 00:00:48,068 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:00:48,068 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:00:48,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:00:48,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:00:48,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:00:48,470 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37407048] [2019-10-15 00:00:48,471 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:00:48,472 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 00:00:48,472 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741692429] [2019-10-15 00:00:48,479 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 00:00:48,481 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:00:48,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 00:00:48,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 00:00:48,500 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2019-10-15 00:00:49,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:00:49,537 INFO L93 Difference]: Finished difference Result 571 states and 989 transitions. [2019-10-15 00:00:49,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 00:00:49,539 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2019-10-15 00:00:49,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:00:49,556 INFO L225 Difference]: With dead ends: 571 [2019-10-15 00:00:49,556 INFO L226 Difference]: Without dead ends: 294 [2019-10-15 00:00:49,564 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 00:00:49,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2019-10-15 00:00:49,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2019-10-15 00:00:49,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2019-10-15 00:00:49,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 446 transitions. [2019-10-15 00:00:49,665 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 446 transitions. Word has length 67 [2019-10-15 00:00:49,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:00:49,666 INFO L462 AbstractCegarLoop]: Abstraction has 294 states and 446 transitions. [2019-10-15 00:00:49,666 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 00:00:49,667 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 446 transitions. [2019-10-15 00:00:49,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2019-10-15 00:00:49,674 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:00:49,675 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:00:49,675 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:00:49,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:00:49,676 INFO L82 PathProgramCache]: Analyzing trace with hash 2016512505, now seen corresponding path program 1 times [2019-10-15 00:00:49,676 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:00:49,676 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777734364] [2019-10-15 00:00:49,677 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:00:49,677 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:00:49,677 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:00:49,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:00:49,941 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:00:49,942 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777734364] [2019-10-15 00:00:49,942 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:00:49,942 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 00:00:49,942 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463682219] [2019-10-15 00:00:49,944 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 00:00:49,945 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:00:49,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 00:00:49,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 00:00:49,945 INFO L87 Difference]: Start difference. First operand 294 states and 446 transitions. Second operand 3 states. [2019-10-15 00:00:50,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:00:50,676 INFO L93 Difference]: Finished difference Result 582 states and 894 transitions. [2019-10-15 00:00:50,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 00:00:50,677 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 186 [2019-10-15 00:00:50,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:00:50,686 INFO L225 Difference]: With dead ends: 582 [2019-10-15 00:00:50,686 INFO L226 Difference]: Without dead ends: 580 [2019-10-15 00:00:50,687 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 00:00:50,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2019-10-15 00:00:50,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 294. [2019-10-15 00:00:50,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2019-10-15 00:00:50,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 446 transitions. [2019-10-15 00:00:50,712 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 446 transitions. Word has length 186 [2019-10-15 00:00:50,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:00:50,713 INFO L462 AbstractCegarLoop]: Abstraction has 294 states and 446 transitions. [2019-10-15 00:00:50,713 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 00:00:50,714 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 446 transitions. [2019-10-15 00:00:50,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2019-10-15 00:00:50,717 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:00:50,717 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:00:50,718 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:00:50,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:00:50,718 INFO L82 PathProgramCache]: Analyzing trace with hash -319573275, now seen corresponding path program 1 times [2019-10-15 00:00:50,718 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:00:50,718 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493372439] [2019-10-15 00:00:50,719 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:00:50,719 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:00:50,719 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:00:50,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:00:50,919 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:00:50,920 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493372439] [2019-10-15 00:00:50,920 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:00:50,920 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 00:00:50,920 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713845038] [2019-10-15 00:00:50,924 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 00:00:50,924 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:00:50,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 00:00:50,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 00:00:50,925 INFO L87 Difference]: Start difference. First operand 294 states and 446 transitions. Second operand 5 states. [2019-10-15 00:00:51,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:00:51,999 INFO L93 Difference]: Finished difference Result 743 states and 1137 transitions. [2019-10-15 00:00:52,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 00:00:52,002 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 192 [2019-10-15 00:00:52,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:00:52,006 INFO L225 Difference]: With dead ends: 743 [2019-10-15 00:00:52,006 INFO L226 Difference]: Without dead ends: 455 [2019-10-15 00:00:52,008 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-15 00:00:52,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2019-10-15 00:00:52,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 447. [2019-10-15 00:00:52,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2019-10-15 00:00:52,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 639 transitions. [2019-10-15 00:00:52,044 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 639 transitions. Word has length 192 [2019-10-15 00:00:52,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:00:52,045 INFO L462 AbstractCegarLoop]: Abstraction has 447 states and 639 transitions. [2019-10-15 00:00:52,045 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 00:00:52,045 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 639 transitions. [2019-10-15 00:00:52,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-10-15 00:00:52,050 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:00:52,050 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:00:52,050 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:00:52,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:00:52,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1760446162, now seen corresponding path program 1 times [2019-10-15 00:00:52,051 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:00:52,052 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882178164] [2019-10-15 00:00:52,052 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:00:52,052 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:00:52,052 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:00:52,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:00:52,318 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:00:52,318 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882178164] [2019-10-15 00:00:52,318 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:00:52,319 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 00:00:52,319 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042446446] [2019-10-15 00:00:52,319 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 00:00:52,320 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:00:52,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 00:00:52,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-15 00:00:52,320 INFO L87 Difference]: Start difference. First operand 447 states and 639 transitions. Second operand 6 states. [2019-10-15 00:00:53,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:00:53,313 INFO L93 Difference]: Finished difference Result 1206 states and 1783 transitions. [2019-10-15 00:00:53,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 00:00:53,315 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 193 [2019-10-15 00:00:53,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:00:53,320 INFO L225 Difference]: With dead ends: 1206 [2019-10-15 00:00:53,320 INFO L226 Difference]: Without dead ends: 765 [2019-10-15 00:00:53,322 INFO L600 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 [2019-10-15 00:00:53,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2019-10-15 00:00:53,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 749. [2019-10-15 00:00:53,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 749 states. [2019-10-15 00:00:53,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1042 transitions. [2019-10-15 00:00:53,353 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1042 transitions. Word has length 193 [2019-10-15 00:00:53,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:00:53,353 INFO L462 AbstractCegarLoop]: Abstraction has 749 states and 1042 transitions. [2019-10-15 00:00:53,353 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 00:00:53,353 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1042 transitions. [2019-10-15 00:00:53,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2019-10-15 00:00:53,359 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:00:53,359 INFO L380 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, 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] [2019-10-15 00:00:53,359 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:00:53,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:00:53,360 INFO L82 PathProgramCache]: Analyzing trace with hash 854527778, now seen corresponding path program 1 times [2019-10-15 00:00:53,360 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:00:53,360 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165125297] [2019-10-15 00:00:53,361 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:00:53,361 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:00:53,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:00:53,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:00:53,535 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:00:53,536 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165125297] [2019-10-15 00:00:53,536 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025685335] [2019-10-15 00:00:53,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 00:00:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:00:53,672 INFO L256 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 00:00:53,689 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 00:00:53,890 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:00:53,892 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 00:00:54,121 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:00:54,121 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1160671537] [2019-10-15 00:00:54,128 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 272 [2019-10-15 00:00:54,181 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-15 00:00:54,182 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-15 00:01:06,007 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation.