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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 15:55:15,202 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 15:55:15,204 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 15:55:15,216 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-09 15:55:15,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-09 15:55:15,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-09 15:55:15,219 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-09 15:55:15,220 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-09 15:55:15,222 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-09 15:55:15,223 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-09 15:55:15,228 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-09 15:55:15,229 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-09 15:55:15,229 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-09 15:55:15,231 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-09 15:55:15,232 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-09 15:55:15,234 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-09 15:55:15,236 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-09 15:55:15,237 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-09 15:55:15,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-09 15:55:15,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-09 15:55:15,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-09 15:55:15,249 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-09 15:55:15,251 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-09 15:55:15,252 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-09 15:55:15,256 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-09 15:55:15,256 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-09 15:55:15,256 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-09 15:55:15,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-09 15:55:15,257 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-09 15:55:15,258 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-09 15:55:15,259 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 15:55:15,261 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 15:55:15,262 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 15:55:15,263 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 15:55:15,267 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 15:55:15,267 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 15:55:15,268 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 15:55:15,268 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-09 15:55:15,268 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 15:55:15,269 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 15:55:15,270 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 15:55:15,272 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-09 15:55:15,295 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 15:55:15,295 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 15:55:15,296 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 15:55:15,297 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 15:55:15,297 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 15:55:15,297 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 15:55:15,298 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 15:55:15,298 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 15:55:15,298 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 15:55:15,298 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 15:55:15,300 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 15:55:15,301 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 15:55:15,301 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 15:55:15,301 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 15:55:15,301 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 15:55:15,302 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 15:55:15,302 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 15:55:15,302 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 15:55:15,302 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 15:55:15,303 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 15:55:15,303 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 15:55:15,303 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 15:55:15,303 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 15:55:15,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 15:55:15,304 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 15:55:15,304 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 15:55:15,304 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 15:55:15,304 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 15:55:15,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 15:55:15,305 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 15:55:15,354 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 15:55:15,371 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 15:55:15,375 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 15:55:15,377 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 15:55:15,377 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 15:55:15,379 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label05.c [2019-09-09 15:55:15,448 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bea80a11c/f10c4bf59b9e45e589806908697a0299/FLAG43e1c7f64 [2019-09-09 15:55:16,198 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 15:55:16,200 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label05.c [2019-09-09 15:55:16,235 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bea80a11c/f10c4bf59b9e45e589806908697a0299/FLAG43e1c7f64 [2019-09-09 15:55:16,306 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bea80a11c/f10c4bf59b9e45e589806908697a0299 [2019-09-09 15:55:16,319 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 15:55:16,321 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 15:55:16,324 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 15:55:16,324 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 15:55:16,327 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 15:55:16,329 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 03:55:16" (1/1) ... [2019-09-09 15:55:16,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3df12f57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:55:16, skipping insertion in model container [2019-09-09 15:55:16,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 03:55:16" (1/1) ... [2019-09-09 15:55:16,341 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 15:55:16,486 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 15:55:17,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 15:55:17,972 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 15:55:18,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 15:55:18,622 INFO L192 MainTranslator]: Completed translation [2019-09-09 15:55:18,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:55:18 WrapperNode [2019-09-09 15:55:18,623 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 15:55:18,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 15:55:18,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 15:55:18,624 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 15:55:18,638 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:55:18" (1/1) ... [2019-09-09 15:55:18,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:55:18" (1/1) ... [2019-09-09 15:55:18,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:55:18" (1/1) ... [2019-09-09 15:55:18,703 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:55:18" (1/1) ... [2019-09-09 15:55:18,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:55:18" (1/1) ... [2019-09-09 15:55:18,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:55:18" (1/1) ... [2019-09-09 15:55:18,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:55:18" (1/1) ... [2019-09-09 15:55:18,920 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 15:55:18,921 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 15:55:18,921 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 15:55:18,921 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 15:55:18,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:55:18" (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 [2019-09-09 15:55:18,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 15:55:18,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 15:55:18,997 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 15:55:18,997 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-09 15:55:18,998 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-09 15:55:18,998 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-09 15:55:19,000 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 15:55:19,000 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 15:55:19,000 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-09 15:55:19,000 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-09 15:55:19,001 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-09 15:55:19,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 15:55:19,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 15:55:19,002 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 15:55:19,002 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 15:55:19,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 15:55:19,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 15:55:24,862 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 15:55:24,863 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 15:55:24,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 03:55:24 BoogieIcfgContainer [2019-09-09 15:55:24,866 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 15:55:24,868 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 15:55:24,868 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 15:55:24,872 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 15:55:24,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 03:55:16" (1/3) ... [2019-09-09 15:55:24,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1490ddbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 03:55:24, skipping insertion in model container [2019-09-09 15:55:24,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 03:55:18" (2/3) ... [2019-09-09 15:55:24,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1490ddbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 03:55:24, skipping insertion in model container [2019-09-09 15:55:24,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 03:55:24" (3/3) ... [2019-09-09 15:55:24,876 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label05.c [2019-09-09 15:55:24,887 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 15:55:24,901 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 15:55:24,924 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 15:55:24,961 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 15:55:24,961 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 15:55:24,961 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 15:55:24,961 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 15:55:24,962 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 15:55:24,962 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 15:55:24,962 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 15:55:24,962 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 15:55:25,012 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2019-09-09 15:55:25,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-09 15:55:25,030 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 15:55:25,031 INFO L399 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] [2019-09-09 15:55:25,033 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 15:55:25,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 15:55:25,039 INFO L82 PathProgramCache]: Analyzing trace with hash 31716538, now seen corresponding path program 1 times [2019-09-09 15:55:25,042 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 15:55:25,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:55:25,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 15:55:25,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:55:25,096 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 15:55:25,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 15:55:25,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 15:55:25,519 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 15:55:25,520 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 15:55:25,520 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 15:55:25,526 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 15:55:25,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 15:55:25,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 15:55:25,546 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 3 states. [2019-09-09 15:55:30,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 15:55:30,780 INFO L93 Difference]: Finished difference Result 1610 states and 2915 transitions. [2019-09-09 15:55:30,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 15:55:30,785 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2019-09-09 15:55:30,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 15:55:30,825 INFO L225 Difference]: With dead ends: 1610 [2019-09-09 15:55:30,825 INFO L226 Difference]: Without dead ends: 1542 [2019-09-09 15:55:30,827 INFO L628 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 [2019-09-09 15:55:30,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2019-09-09 15:55:30,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1542. [2019-09-09 15:55:30,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1542 states. [2019-09-09 15:55:30,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 2822 transitions. [2019-09-09 15:55:30,991 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 2822 transitions. Word has length 65 [2019-09-09 15:55:30,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 15:55:30,992 INFO L475 AbstractCegarLoop]: Abstraction has 1542 states and 2822 transitions. [2019-09-09 15:55:30,992 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 15:55:30,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 2822 transitions. [2019-09-09 15:55:30,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-09-09 15:55:30,999 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 15:55:30,999 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 15:55:31,000 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 15:55:31,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 15:55:31,000 INFO L82 PathProgramCache]: Analyzing trace with hash 781769327, now seen corresponding path program 1 times [2019-09-09 15:55:31,001 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 15:55:31,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:55:31,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 15:55:31,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:55:31,002 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 15:55:31,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 15:55:31,188 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 15:55:31,189 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 15:55:31,189 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 15:55:31,189 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 15:55:31,191 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 15:55:31,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 15:55:31,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-09 15:55:31,192 INFO L87 Difference]: Start difference. First operand 1542 states and 2822 transitions. Second operand 5 states. [2019-09-09 15:55:37,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 15:55:37,763 INFO L93 Difference]: Finished difference Result 2376 states and 4006 transitions. [2019-09-09 15:55:37,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 15:55:37,765 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2019-09-09 15:55:37,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 15:55:37,778 INFO L225 Difference]: With dead ends: 2376 [2019-09-09 15:55:37,778 INFO L226 Difference]: Without dead ends: 2376 [2019-09-09 15:55:37,779 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-09 15:55:37,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2376 states. [2019-09-09 15:55:37,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2376 to 2350. [2019-09-09 15:55:37,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2350 states. [2019-09-09 15:55:37,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2350 states to 2350 states and 3968 transitions. [2019-09-09 15:55:37,838 INFO L78 Accepts]: Start accepts. Automaton has 2350 states and 3968 transitions. Word has length 138 [2019-09-09 15:55:37,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 15:55:37,839 INFO L475 AbstractCegarLoop]: Abstraction has 2350 states and 3968 transitions. [2019-09-09 15:55:37,839 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 15:55:37,839 INFO L276 IsEmpty]: Start isEmpty. Operand 2350 states and 3968 transitions. [2019-09-09 15:55:37,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-09-09 15:55:37,842 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 15:55:37,842 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 15:55:37,843 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 15:55:37,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 15:55:37,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1960620333, now seen corresponding path program 1 times [2019-09-09 15:55:37,843 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 15:55:37,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:55:37,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 15:55:37,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 15:55:37,845 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 15:55:37,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 15:55:37,976 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-09 15:55:37,977 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 15:55:37,977 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 15:55:37,978 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 141 with the following transitions: [2019-09-09 15:55:37,980 INFO L207 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2179], [2187], [2195], [2203], [2211], [2219], [2227], [2235], [2243], [2251], [2259], [2267], [2275], [2283], [2291], [2295], [2297], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2384], [3240], [3244], [3253], [3257], [3259], [3270], [3271], [3272], [3274], [3275] [2019-09-09 15:55:38,054 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 15:55:38,056 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 15:55:51,905 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 15:55:51,907 INFO L272 AbstractInterpreter]: Visited 82 different actions 159 times. Merged at 4 different actions 5 times. Never widened. Performed 383 root evaluator evaluations with a maximum evaluation depth of 16. Performed 383 inverse root evaluator evaluations with a maximum inverse evaluation depth of 16. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2019-09-09 15:55:51,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 15:55:51,911 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 15:55:57,314 INFO L227 lantSequenceWeakener]: Weakened 137 states. On average, predicates are now at 76.28% of their original sizes. [2019-09-09 15:55:57,314 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 15:55:57,387 INFO L420 sIntCurrentIteration]: We unified 139 AI predicates to 139 [2019-09-09 15:55:57,388 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 15:55:57,389 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 15:55:57,389 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 14 [2019-09-09 15:55:57,389 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 15:55:57,390 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-09 15:55:57,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-09 15:55:57,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-09-09 15:55:57,391 INFO L87 Difference]: Start difference. First operand 2350 states and 3968 transitions. Second operand 11 states. [2019-09-09 15:56:48,570 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation.