./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/id2_b2_o3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/id2_b2_o3.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f345f307410a5ddbdd0513896d69ca703c67be23 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-28 00:25:30,150 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 00:25:30,153 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 00:25:30,173 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 00:25:30,174 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 00:25:30,176 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 00:25:30,179 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 00:25:30,190 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 00:25:30,196 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 00:25:30,200 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 00:25:30,202 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 00:25:30,205 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 00:25:30,205 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 00:25:30,208 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 00:25:30,210 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 00:25:30,211 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 00:25:30,213 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 00:25:30,214 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 00:25:30,217 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 00:25:30,222 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 00:25:30,227 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 00:25:30,231 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 00:25:30,233 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 00:25:30,234 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 00:25:30,237 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 00:25:30,237 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 00:25:30,238 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 00:25:30,240 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 00:25:30,240 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 00:25:30,241 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 00:25:30,242 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 00:25:30,243 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 00:25:30,244 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 00:25:30,245 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 00:25:30,246 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 00:25:30,246 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 00:25:30,248 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 00:25:30,248 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 00:25:30,248 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 00:25:30,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 00:25:30,251 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 00:25:30,252 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 00:25:30,289 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 00:25:30,290 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 00:25:30,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 00:25:30,295 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 00:25:30,295 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 00:25:30,296 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 00:25:30,296 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 00:25:30,296 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 00:25:30,297 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 00:25:30,298 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 00:25:30,298 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 00:25:30,298 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 00:25:30,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 00:25:30,300 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 00:25:30,300 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 00:25:30,303 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 00:25:30,303 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 00:25:30,304 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 00:25:30,304 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 00:25:30,304 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 00:25:30,304 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 00:25:30,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 00:25:30,305 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 00:25:30,306 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 00:25:30,306 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 00:25:30,307 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 00:25:30,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 00:25:30,307 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 00:25:30,308 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f345f307410a5ddbdd0513896d69ca703c67be23 [2019-11-28 00:25:30,641 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 00:25:30,655 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 00:25:30,659 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 00:25:30,661 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 00:25:30,662 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 00:25:30,663 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/id2_b2_o3.c [2019-11-28 00:25:30,746 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57ba6eed9/07bf43e6bd4c444e8c6e5bc4fffd842b/FLAGe2fc36d02 [2019-11-28 00:25:31,236 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 00:25:31,237 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id2_b2_o3.c [2019-11-28 00:25:31,243 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57ba6eed9/07bf43e6bd4c444e8c6e5bc4fffd842b/FLAGe2fc36d02 [2019-11-28 00:25:31,605 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57ba6eed9/07bf43e6bd4c444e8c6e5bc4fffd842b [2019-11-28 00:25:31,609 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 00:25:31,611 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 00:25:31,613 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 00:25:31,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 00:25:31,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 00:25:31,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:25:31" (1/1) ... [2019-11-28 00:25:31,622 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dc2ffad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:25:31, skipping insertion in model container [2019-11-28 00:25:31,622 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:25:31" (1/1) ... [2019-11-28 00:25:31,631 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 00:25:31,649 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 00:25:31,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 00:25:31,861 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 00:25:31,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 00:25:31,887 INFO L208 MainTranslator]: Completed translation [2019-11-28 00:25:31,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:25:31 WrapperNode [2019-11-28 00:25:31,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 00:25:31,889 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 00:25:31,889 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 00:25:31,889 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 00:25:31,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:25:31" (1/1) ... [2019-11-28 00:25:31,902 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:25:31" (1/1) ... [2019-11-28 00:25:31,969 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 00:25:31,971 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 00:25:31,972 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 00:25:31,972 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 00:25:31,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:25:31" (1/1) ... [2019-11-28 00:25:31,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:25:31" (1/1) ... [2019-11-28 00:25:31,980 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:25:31" (1/1) ... [2019-11-28 00:25:31,980 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:25:31" (1/1) ... [2019-11-28 00:25:31,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:25:31" (1/1) ... [2019-11-28 00:25:31,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:25:31" (1/1) ... [2019-11-28 00:25:31,987 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:25:31" (1/1) ... [2019-11-28 00:25:31,990 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 00:25:31,991 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 00:25:31,991 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 00:25:31,991 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 00:25:31,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:25:31" (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 [2019-11-28 00:25:32,047 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2019-11-28 00:25:32,048 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2019-11-28 00:25:32,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 00:25:32,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 00:25:32,050 INFO L130 BoogieDeclarations]: Found specification of procedure id [2019-11-28 00:25:32,050 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2019-11-28 00:25:32,255 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 00:25:32,256 INFO L297 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-28 00:25:32,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:25:32 BoogieIcfgContainer [2019-11-28 00:25:32,258 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 00:25:32,259 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 00:25:32,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 00:25:32,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 00:25:32,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 12:25:31" (1/3) ... [2019-11-28 00:25:32,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba21cd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:25:32, skipping insertion in model container [2019-11-28 00:25:32,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:25:31" (2/3) ... [2019-11-28 00:25:32,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba21cd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:25:32, skipping insertion in model container [2019-11-28 00:25:32,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:25:32" (3/3) ... [2019-11-28 00:25:32,283 INFO L109 eAbstractionObserver]: Analyzing ICFG id2_b2_o3.c [2019-11-28 00:25:32,300 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 00:25:32,309 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 00:25:32,334 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 00:25:32,364 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 00:25:32,364 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 00:25:32,365 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 00:25:32,365 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 00:25:32,365 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 00:25:32,365 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 00:25:32,366 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 00:25:32,366 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 00:25:32,385 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-11-28 00:25:32,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 00:25:32,390 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:25:32,390 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 00:25:32,391 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:25:32,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:25:32,396 INFO L82 PathProgramCache]: Analyzing trace with hash -394807891, now seen corresponding path program 1 times [2019-11-28 00:25:32,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:25:32,404 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623797984] [2019-11-28 00:25:32,404 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:25:32,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:25:32,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:25:32,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:25:32,668 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623797984] [2019-11-28 00:25:32,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 00:25:32,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 00:25:32,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538102014] [2019-11-28 00:25:32,676 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 00:25:32,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:25:32,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 00:25:32,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 00:25:32,690 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 5 states. [2019-11-28 00:25:32,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:25:32,747 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2019-11-28 00:25:32,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 00:25:32,749 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-11-28 00:25:32,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:25:32,760 INFO L225 Difference]: With dead ends: 35 [2019-11-28 00:25:32,761 INFO L226 Difference]: Without dead ends: 22 [2019-11-28 00:25:32,764 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 00:25:32,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-28 00:25:32,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-11-28 00:25:32,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-28 00:25:32,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2019-11-28 00:25:32,807 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 9 [2019-11-28 00:25:32,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:25:32,808 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2019-11-28 00:25:32,808 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 00:25:32,808 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2019-11-28 00:25:32,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-28 00:25:32,810 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:25:32,810 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 00:25:32,811 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:25:32,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:25:32,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1343664860, now seen corresponding path program 1 times [2019-11-28 00:25:32,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:25:32,813 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175178879] [2019-11-28 00:25:32,814 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:25:32,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:25:32,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:25:32,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:25:32,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:25:32,980 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175178879] [2019-11-28 00:25:32,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 00:25:32,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 00:25:32,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924982607] [2019-11-28 00:25:32,983 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 00:25:32,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:25:32,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 00:25:32,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 00:25:32,984 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 5 states. [2019-11-28 00:25:33,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:25:33,010 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2019-11-28 00:25:33,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 00:25:33,011 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-11-28 00:25:33,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:25:33,012 INFO L225 Difference]: With dead ends: 28 [2019-11-28 00:25:33,012 INFO L226 Difference]: Without dead ends: 24 [2019-11-28 00:25:33,014 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 00:25:33,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-28 00:25:33,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2019-11-28 00:25:33,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-28 00:25:33,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2019-11-28 00:25:33,023 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 16 [2019-11-28 00:25:33,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:25:33,024 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2019-11-28 00:25:33,024 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 00:25:33,024 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2019-11-28 00:25:33,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-28 00:25:33,025 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:25:33,025 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 00:25:33,026 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:25:33,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:25:33,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1372294011, now seen corresponding path program 1 times [2019-11-28 00:25:33,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:25:33,027 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564082377] [2019-11-28 00:25:33,027 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:25:33,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:25:33,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:25:33,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:25:33,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 00:25:33,230 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564082377] [2019-11-28 00:25:33,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 00:25:33,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-28 00:25:33,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673654790] [2019-11-28 00:25:33,231 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-28 00:25:33,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:25:33,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 00:25:33,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-28 00:25:33,232 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 8 states. [2019-11-28 00:25:33,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:25:33,294 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2019-11-28 00:25:33,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-28 00:25:33,295 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2019-11-28 00:25:33,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:25:33,296 INFO L225 Difference]: With dead ends: 44 [2019-11-28 00:25:33,297 INFO L226 Difference]: Without dead ends: 28 [2019-11-28 00:25:33,298 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-11-28 00:25:33,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-28 00:25:33,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2019-11-28 00:25:33,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-28 00:25:33,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2019-11-28 00:25:33,306 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 16 [2019-11-28 00:25:33,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:25:33,306 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2019-11-28 00:25:33,307 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-28 00:25:33,307 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2019-11-28 00:25:33,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-28 00:25:33,308 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:25:33,308 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 00:25:33,309 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:25:33,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:25:33,309 INFO L82 PathProgramCache]: Analyzing trace with hash -971845561, now seen corresponding path program 1 times [2019-11-28 00:25:33,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:25:33,310 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433527176] [2019-11-28 00:25:33,310 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:25:33,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:25:33,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:25:33,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:25:33,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:25:33,485 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-28 00:25:33,488 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433527176] [2019-11-28 00:25:33,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 00:25:33,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 00:25:33,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562335535] [2019-11-28 00:25:33,490 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 00:25:33,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:25:33,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 00:25:33,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 00:25:33,492 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 5 states. [2019-11-28 00:25:33,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:25:33,520 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2019-11-28 00:25:33,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 00:25:33,523 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2019-11-28 00:25:33,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:25:33,525 INFO L225 Difference]: With dead ends: 46 [2019-11-28 00:25:33,525 INFO L226 Difference]: Without dead ends: 32 [2019-11-28 00:25:33,527 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 00:25:33,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-28 00:25:33,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2019-11-28 00:25:33,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-28 00:25:33,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2019-11-28 00:25:33,541 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 23 [2019-11-28 00:25:33,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:25:33,542 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2019-11-28 00:25:33,542 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 00:25:33,542 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2019-11-28 00:25:33,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-28 00:25:33,544 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:25:33,545 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 00:25:33,545 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:25:33,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:25:33,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1168359066, now seen corresponding path program 1 times [2019-11-28 00:25:33,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:25:33,548 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231592031] [2019-11-28 00:25:33,548 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:25:33,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:25:33,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:25:33,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:25:33,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:25:33,832 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-28 00:25:33,834 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231592031] [2019-11-28 00:25:33,834 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113388180] [2019-11-28 00:25:33,834 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 [2019-11-28 00:25:33,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:25:33,882 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-28 00:25:33,891 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:25:34,008 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-28 00:25:34,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 00:25:34,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-11-28 00:25:34,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082707532] [2019-11-28 00:25:34,012 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-28 00:25:34,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:25:34,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-28 00:25:34,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-11-28 00:25:34,015 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 12 states. [2019-11-28 00:25:34,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:25:34,126 INFO L93 Difference]: Finished difference Result 62 states and 71 transitions. [2019-11-28 00:25:34,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-28 00:25:34,127 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2019-11-28 00:25:34,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:25:34,129 INFO L225 Difference]: With dead ends: 62 [2019-11-28 00:25:34,129 INFO L226 Difference]: Without dead ends: 42 [2019-11-28 00:25:34,130 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-11-28 00:25:34,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-11-28 00:25:34,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 34. [2019-11-28 00:25:34,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-28 00:25:34,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2019-11-28 00:25:34,138 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 23 [2019-11-28 00:25:34,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:25:34,139 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2019-11-28 00:25:34,139 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-28 00:25:34,140 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2019-11-28 00:25:34,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-28 00:25:34,141 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:25:34,141 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 00:25:34,344 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:25:34,345 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:25:34,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:25:34,345 INFO L82 PathProgramCache]: Analyzing trace with hash -222974932, now seen corresponding path program 1 times [2019-11-28 00:25:34,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:25:34,347 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242378380] [2019-11-28 00:25:34,348 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:25:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:25:34,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:25:34,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:25:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:25:34,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:25:34,626 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-28 00:25:34,626 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242378380] [2019-11-28 00:25:34,627 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6836041] [2019-11-28 00:25:34,627 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:25:34,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:25:34,663 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 27 conjunts are in the unsatisfiable core [2019-11-28 00:25:34,666 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:25:34,725 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-28 00:25:34,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 00:25:34,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-11-28 00:25:34,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625776270] [2019-11-28 00:25:34,727 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-28 00:25:34,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:25:34,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-28 00:25:34,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-11-28 00:25:34,731 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 12 states. [2019-11-28 00:25:34,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:25:34,867 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2019-11-28 00:25:34,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-28 00:25:34,870 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2019-11-28 00:25:34,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:25:34,872 INFO L225 Difference]: With dead ends: 66 [2019-11-28 00:25:34,872 INFO L226 Difference]: Without dead ends: 48 [2019-11-28 00:25:34,875 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-11-28 00:25:34,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-11-28 00:25:34,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2019-11-28 00:25:34,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-28 00:25:34,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2019-11-28 00:25:34,890 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 30 [2019-11-28 00:25:34,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:25:34,891 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2019-11-28 00:25:34,891 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-28 00:25:34,892 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2019-11-28 00:25:34,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-28 00:25:34,894 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 00:25:34,894 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 00:25:35,107 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:25:35,108 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 00:25:35,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 00:25:35,109 INFO L82 PathProgramCache]: Analyzing trace with hash -141607649, now seen corresponding path program 2 times [2019-11-28 00:25:35,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 00:25:35,110 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724512533] [2019-11-28 00:25:35,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 00:25:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:25:35,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:25:35,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:25:35,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:25:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:25:35,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 00:25:35,339 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-28 00:25:35,340 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724512533] [2019-11-28 00:25:35,340 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319748192] [2019-11-28 00:25:35,340 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:25:35,394 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 00:25:35,394 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 00:25:35,396 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 32 conjunts are in the unsatisfiable core [2019-11-28 00:25:35,403 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 00:25:35,507 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-28 00:25:35,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 00:25:35,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14] total 15 [2019-11-28 00:25:35,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510315123] [2019-11-28 00:25:35,508 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-28 00:25:35,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 00:25:35,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-28 00:25:35,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2019-11-28 00:25:35,510 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 15 states. [2019-11-28 00:25:35,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 00:25:35,638 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2019-11-28 00:25:35,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-28 00:25:35,639 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 37 [2019-11-28 00:25:35,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 00:25:35,640 INFO L225 Difference]: With dead ends: 54 [2019-11-28 00:25:35,640 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 00:25:35,641 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2019-11-28 00:25:35,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 00:25:35,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 00:25:35,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 00:25:35,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 00:25:35,643 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2019-11-28 00:25:35,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 00:25:35,643 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 00:25:35,644 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-28 00:25:35,644 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 00:25:35,644 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 00:25:35,848 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 00:25:35,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 00:25:35,867 INFO L246 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2019-11-28 00:25:35,868 INFO L249 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: true [2019-11-28 00:25:35,868 INFO L246 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2019-11-28 00:25:35,868 INFO L246 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2019-11-28 00:25:35,868 INFO L246 CegarLoopResult]: For program point id2EXIT(lines 14 19) no Hoare annotation was computed. [2019-11-28 00:25:35,868 INFO L249 CegarLoopResult]: At program point id2ENTRY(lines 14 19) the Hoare annotation is: true [2019-11-28 00:25:35,869 INFO L246 CegarLoopResult]: For program point id2FINAL(lines 14 19) no Hoare annotation was computed. [2019-11-28 00:25:35,869 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 00:25:35,869 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 00:25:35,869 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 00:25:35,869 INFO L246 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2019-11-28 00:25:35,870 INFO L246 CegarLoopResult]: For program point L24(lines 24 26) no Hoare annotation was computed. [2019-11-28 00:25:35,870 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 25) no Hoare annotation was computed. [2019-11-28 00:25:35,870 INFO L249 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: true [2019-11-28 00:25:35,870 INFO L246 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2019-11-28 00:25:35,870 INFO L246 CegarLoopResult]: For program point L21(lines 21 27) no Hoare annotation was computed. [2019-11-28 00:25:35,870 INFO L246 CegarLoopResult]: For program point idFINAL(lines 7 12) no Hoare annotation was computed. [2019-11-28 00:25:35,871 INFO L246 CegarLoopResult]: For program point idEXIT(lines 7 12) no Hoare annotation was computed. [2019-11-28 00:25:35,871 INFO L246 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2019-11-28 00:25:35,871 INFO L249 CegarLoopResult]: At program point L9(line 9) the Hoare annotation is: true [2019-11-28 00:25:35,871 INFO L246 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2019-11-28 00:25:35,871 INFO L246 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2019-11-28 00:25:35,871 INFO L249 CegarLoopResult]: At program point idENTRY(lines 7 12) the Hoare annotation is: true [2019-11-28 00:25:35,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 12:25:35 BoogieIcfgContainer [2019-11-28 00:25:35,879 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 00:25:35,879 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 00:25:35,879 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 00:25:35,880 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 00:25:35,880 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:25:32" (3/4) ... [2019-11-28 00:25:35,884 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 00:25:35,892 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id2 [2019-11-28 00:25:35,893 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2019-11-28 00:25:35,899 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-28 00:25:35,899 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-28 00:25:35,949 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 00:25:35,949 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 00:25:35,952 INFO L168 Benchmark]: Toolchain (without parser) took 4340.61 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.0 MB). Free memory was 955.0 MB in the beginning and 806.0 MB in the end (delta: 149.0 MB). Peak memory consumption was 247.1 MB. Max. memory is 11.5 GB. [2019-11-28 00:25:35,953 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 00:25:35,953 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.43 ms. Allocated memory is still 1.0 GB. Free memory was 955.0 MB in the beginning and 944.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 00:25:35,954 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.07 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.0 MB). Free memory was 944.3 MB in the beginning and 1.1 GB in the end (delta: -149.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. [2019-11-28 00:25:35,955 INFO L168 Benchmark]: Boogie Preprocessor took 19.24 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-28 00:25:35,956 INFO L168 Benchmark]: RCFGBuilder took 267.59 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 11.5 GB. [2019-11-28 00:25:35,956 INFO L168 Benchmark]: TraceAbstraction took 3619.34 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 806.0 MB in the end (delta: 270.0 MB). Peak memory consumption was 270.0 MB. Max. memory is 11.5 GB. [2019-11-28 00:25:35,957 INFO L168 Benchmark]: Witness Printer took 70.38 ms. Allocated memory is still 1.1 GB. Free memory is still 806.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 00:25:35,965 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 275.43 ms. Allocated memory is still 1.0 GB. Free memory was 955.0 MB in the beginning and 944.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 82.07 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.0 MB). Free memory was 944.3 MB in the beginning and 1.1 GB in the end (delta: -149.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.24 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 267.59 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3619.34 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 806.0 MB in the end (delta: 270.0 MB). Peak memory consumption was 270.0 MB. Max. memory is 11.5 GB. * Witness Printer took 70.38 ms. Allocated memory is still 1.1 GB. Free memory is still 806.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 23 locations, 1 error locations. Result: SAFE, OverallTime: 3.4s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 177 SDtfs, 23 SDslu, 1077 SDs, 0 SdLazy, 291 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 194 GetRequests, 133 SyntacticMatches, 6 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 20 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 5 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 244 NumberOfCodeBlocks, 244 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 234 ConstructedInterpolants, 0 QuantifiedInterpolants, 21814 SizeOfPredicates, 10 NumberOfNonLiveVariables, 201 ConjunctsInSsa, 79 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 54/78 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...