./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/psyco/psyco_io_1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -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/psyco/psyco_io_1.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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0e42a14d02446d341c51d21bb42c9bd175f1ebef ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:00:36,094 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:00:36,098 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:00:36,137 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:00:36,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:00:36,146 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:00:36,149 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:00:36,152 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:00:36,155 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:00:36,159 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:00:36,160 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:00:36,161 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:00:36,162 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:00:36,165 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:00:36,167 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:00:36,169 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:00:36,170 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:00:36,171 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:00:36,174 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:00:36,180 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:00:36,183 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:00:36,184 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:00:36,186 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:00:36,187 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:00:36,199 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:00:36,200 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:00:36,201 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:00:36,211 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:00:36,213 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:00:36,214 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:00:36,214 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:00:36,215 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:00:36,216 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:00:36,216 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:00:36,217 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:00:36,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:00:36,219 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:00:36,219 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:00:36,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:00:36,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:00:36,223 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:00:36,223 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:00:36,260 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:00:36,261 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:00:36,262 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:00:36,263 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:00:36,263 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:00:36,263 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:00:36,263 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:00:36,264 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:00:36,264 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:00:36,264 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:00:36,265 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:00:36,265 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:00:36,266 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:00:36,266 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:00:36,266 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:00:36,267 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:00:36,267 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:00:36,267 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:00:36,267 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:00:36,268 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:00:36,268 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:00:36,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:00:36,268 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:00:36,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:00:36,269 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:00:36,269 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:00:36,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:00:36,270 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:00:36,270 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:00:36,270 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(reach_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 -> 0e42a14d02446d341c51d21bb42c9bd175f1ebef [2020-10-20 00:00:36,532 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:00:36,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:00:36,554 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:00:36,558 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:00:36,559 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:00:36,560 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/psyco/psyco_io_1.c [2020-10-20 00:00:36,623 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aff011044/edda701ea9fe44ebbd2308b5156e7a93/FLAG4edb43f19 [2020-10-20 00:00:37,045 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:00:37,046 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/psyco/psyco_io_1.c [2020-10-20 00:00:37,059 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aff011044/edda701ea9fe44ebbd2308b5156e7a93/FLAG4edb43f19 [2020-10-20 00:00:37,464 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aff011044/edda701ea9fe44ebbd2308b5156e7a93 [2020-10-20 00:00:37,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:00:37,474 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:00:37,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:00:37,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:00:37,479 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:00:37,480 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:00:37" (1/1) ... [2020-10-20 00:00:37,484 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27e5033e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:00:37, skipping insertion in model container [2020-10-20 00:00:37,484 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:00:37" (1/1) ... [2020-10-20 00:00:37,494 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:00:37,524 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:00:37,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:00:37,828 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:00:37,866 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:00:37,885 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:00:37,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:00:37 WrapperNode [2020-10-20 00:00:37,886 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:00:37,887 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:00:37,887 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:00:37,888 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:00:37,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:00:37" (1/1) ... [2020-10-20 00:00:37,908 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:00:37" (1/1) ... [2020-10-20 00:00:37,940 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:00:37,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:00:37,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:00:37,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:00:37,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:00:37" (1/1) ... [2020-10-20 00:00:37,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:00:37" (1/1) ... [2020-10-20 00:00:37,956 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:00:37" (1/1) ... [2020-10-20 00:00:37,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:00:37" (1/1) ... [2020-10-20 00:00:37,962 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:00:37" (1/1) ... [2020-10-20 00:00:37,970 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:00:37" (1/1) ... [2020-10-20 00:00:37,973 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:00:37" (1/1) ... [2020-10-20 00:00:37,976 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:00:37,977 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:00:37,977 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:00:37,978 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:00:37,979 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:00:37" (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 [2020-10-20 00:00:38,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:00:38,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:00:38,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:00:38,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:00:38,620 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:00:38,621 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-20 00:00:38,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:00:38 BoogieIcfgContainer [2020-10-20 00:00:38,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:00:38,628 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:00:38,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:00:38,634 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:00:38,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:00:37" (1/3) ... [2020-10-20 00:00:38,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f4e854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:00:38, skipping insertion in model container [2020-10-20 00:00:38,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:00:37" (2/3) ... [2020-10-20 00:00:38,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f4e854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:00:38, skipping insertion in model container [2020-10-20 00:00:38,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:00:38" (3/3) ... [2020-10-20 00:00:38,643 INFO L111 eAbstractionObserver]: Analyzing ICFG psyco_io_1.c [2020-10-20 00:00:38,658 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:00:38,668 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:00:38,683 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:00:38,705 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:00:38,705 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:00:38,706 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:00:38,706 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:00:38,706 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:00:38,706 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:00:38,707 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:00:38,707 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:00:38,726 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2020-10-20 00:00:38,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 00:00:38,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:00:38,735 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:00:38,735 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:00:38,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:00:38,742 INFO L82 PathProgramCache]: Analyzing trace with hash 352571312, now seen corresponding path program 1 times [2020-10-20 00:00:38,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:00:38,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312572320] [2020-10-20 00:00:38,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:00:38,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:00:38,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:00:38,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312572320] [2020-10-20 00:00:38,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:00:38,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:00:38,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509802672] [2020-10-20 00:00:38,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:00:38,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:00:38,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:00:38,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:00:38,945 INFO L87 Difference]: Start difference. First operand 69 states. Second operand 2 states. [2020-10-20 00:00:38,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:00:38,971 INFO L93 Difference]: Finished difference Result 131 states and 245 transitions. [2020-10-20 00:00:38,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:00:38,973 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-20 00:00:38,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:00:38,986 INFO L225 Difference]: With dead ends: 131 [2020-10-20 00:00:38,986 INFO L226 Difference]: Without dead ends: 57 [2020-10-20 00:00:38,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:00:39,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-20 00:00:39,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-10-20 00:00:39,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-20 00:00:39,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 87 transitions. [2020-10-20 00:00:39,032 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 87 transitions. Word has length 9 [2020-10-20 00:00:39,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:00:39,032 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 87 transitions. [2020-10-20 00:00:39,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:00:39,033 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 87 transitions. [2020-10-20 00:00:39,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 00:00:39,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:00:39,034 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:00:39,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:00:39,035 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:00:39,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:00:39,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1422697760, now seen corresponding path program 1 times [2020-10-20 00:00:39,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:00:39,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896857561] [2020-10-20 00:00:39,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:00:39,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:00:39,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:00:39,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896857561] [2020-10-20 00:00:39,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:00:39,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 00:00:39,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357128029] [2020-10-20 00:00:39,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 00:00:39,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:00:39,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 00:00:39,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 00:00:39,113 INFO L87 Difference]: Start difference. First operand 57 states and 87 transitions. Second operand 3 states. [2020-10-20 00:00:39,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:00:39,164 INFO L93 Difference]: Finished difference Result 115 states and 176 transitions. [2020-10-20 00:00:39,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 00:00:39,165 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-20 00:00:39,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:00:39,166 INFO L225 Difference]: With dead ends: 115 [2020-10-20 00:00:39,166 INFO L226 Difference]: Without dead ends: 60 [2020-10-20 00:00:39,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 00:00:39,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-20 00:00:39,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-10-20 00:00:39,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-20 00:00:39,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 90 transitions. [2020-10-20 00:00:39,179 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 90 transitions. Word has length 10 [2020-10-20 00:00:39,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:00:39,179 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 90 transitions. [2020-10-20 00:00:39,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 00:00:39,179 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 90 transitions. [2020-10-20 00:00:39,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 00:00:39,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:00:39,180 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:00:39,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:00:39,181 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:00:39,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:00:39,181 INFO L82 PathProgramCache]: Analyzing trace with hash 658032531, now seen corresponding path program 1 times [2020-10-20 00:00:39,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:00:39,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193603176] [2020-10-20 00:00:39,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:00:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:00:39,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:00:39,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193603176] [2020-10-20 00:00:39,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:00:39,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 00:00:39,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795754811] [2020-10-20 00:00:39,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 00:00:39,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:00:39,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 00:00:39,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 00:00:39,257 INFO L87 Difference]: Start difference. First operand 60 states and 90 transitions. Second operand 3 states. [2020-10-20 00:00:39,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:00:39,325 INFO L93 Difference]: Finished difference Result 123 states and 185 transitions. [2020-10-20 00:00:39,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 00:00:39,325 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-20 00:00:39,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:00:39,327 INFO L225 Difference]: With dead ends: 123 [2020-10-20 00:00:39,327 INFO L226 Difference]: Without dead ends: 66 [2020-10-20 00:00:39,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 00:00:39,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-20 00:00:39,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-10-20 00:00:39,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-20 00:00:39,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 94 transitions. [2020-10-20 00:00:39,337 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 94 transitions. Word has length 15 [2020-10-20 00:00:39,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:00:39,337 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 94 transitions. [2020-10-20 00:00:39,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 00:00:39,338 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 94 transitions. [2020-10-20 00:00:39,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-20 00:00:39,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:00:39,339 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:00:39,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 00:00:39,339 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:00:39,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:00:39,340 INFO L82 PathProgramCache]: Analyzing trace with hash 2017993163, now seen corresponding path program 1 times [2020-10-20 00:00:39,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:00:39,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299691318] [2020-10-20 00:00:39,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:00:39,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:00:39,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:00:39,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299691318] [2020-10-20 00:00:39,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:00:39,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 00:00:39,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625559829] [2020-10-20 00:00:39,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 00:00:39,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:00:39,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 00:00:39,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 00:00:39,393 INFO L87 Difference]: Start difference. First operand 64 states and 94 transitions. Second operand 3 states. [2020-10-20 00:00:39,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:00:39,466 INFO L93 Difference]: Finished difference Result 182 states and 272 transitions. [2020-10-20 00:00:39,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 00:00:39,466 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-10-20 00:00:39,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:00:39,468 INFO L225 Difference]: With dead ends: 182 [2020-10-20 00:00:39,468 INFO L226 Difference]: Without dead ends: 117 [2020-10-20 00:00:39,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 00:00:39,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-20 00:00:39,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 108. [2020-10-20 00:00:39,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-20 00:00:39,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 160 transitions. [2020-10-20 00:00:39,481 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 160 transitions. Word has length 20 [2020-10-20 00:00:39,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:00:39,481 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 160 transitions. [2020-10-20 00:00:39,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 00:00:39,481 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 160 transitions. [2020-10-20 00:00:39,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-20 00:00:39,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:00:39,483 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:00:39,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 00:00:39,483 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:00:39,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:00:39,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1713693363, now seen corresponding path program 1 times [2020-10-20 00:00:39,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:00:39,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347147071] [2020-10-20 00:00:39,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:00:39,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:00:39,561 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 00:00:39,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347147071] [2020-10-20 00:00:39,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:00:39,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 00:00:39,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182232223] [2020-10-20 00:00:39,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 00:00:39,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:00:39,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 00:00:39,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 00:00:39,564 INFO L87 Difference]: Start difference. First operand 108 states and 160 transitions. Second operand 3 states. [2020-10-20 00:00:39,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:00:39,598 INFO L93 Difference]: Finished difference Result 178 states and 264 transitions. [2020-10-20 00:00:39,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 00:00:39,598 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-20 00:00:39,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:00:39,600 INFO L225 Difference]: With dead ends: 178 [2020-10-20 00:00:39,600 INFO L226 Difference]: Without dead ends: 73 [2020-10-20 00:00:39,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 00:00:39,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-20 00:00:39,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-10-20 00:00:39,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-20 00:00:39,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 101 transitions. [2020-10-20 00:00:39,609 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 101 transitions. Word has length 27 [2020-10-20 00:00:39,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:00:39,609 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 101 transitions. [2020-10-20 00:00:39,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 00:00:39,609 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 101 transitions. [2020-10-20 00:00:39,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-20 00:00:39,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:00:39,611 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-20 00:00:39,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 00:00:39,611 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:00:39,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:00:39,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1521721792, now seen corresponding path program 1 times [2020-10-20 00:00:39,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:00:39,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755806677] [2020-10-20 00:00:39,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:00:39,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:00:39,722 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 00:00:39,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755806677] [2020-10-20 00:00:39,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:00:39,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 00:00:39,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537131151] [2020-10-20 00:00:39,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 00:00:39,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:00:39,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 00:00:39,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 00:00:39,725 INFO L87 Difference]: Start difference. First operand 73 states and 101 transitions. Second operand 4 states. [2020-10-20 00:00:39,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:00:39,777 INFO L93 Difference]: Finished difference Result 76 states and 104 transitions. [2020-10-20 00:00:39,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 00:00:39,778 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-10-20 00:00:39,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:00:39,778 INFO L225 Difference]: With dead ends: 76 [2020-10-20 00:00:39,778 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 00:00:39,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-20 00:00:39,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 00:00:39,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 00:00:39,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 00:00:39,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 00:00:39,780 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2020-10-20 00:00:39,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:00:39,780 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 00:00:39,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 00:00:39,781 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 00:00:39,788 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 00:00:39,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 00:00:39,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-20 00:00:39,845 INFO L274 CegarLoopResult]: For program point L36(lines 36 51) no Hoare annotation was computed. [2020-10-20 00:00:39,845 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-20 00:00:39,845 INFO L274 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-10-20 00:00:39,846 INFO L274 CegarLoopResult]: For program point L38(lines 38 49) no Hoare annotation was computed. [2020-10-20 00:00:39,846 INFO L274 CegarLoopResult]: For program point L88(lines 88 103) no Hoare annotation was computed. [2020-10-20 00:00:39,846 INFO L274 CegarLoopResult]: For program point L55(lines 55 106) no Hoare annotation was computed. [2020-10-20 00:00:39,846 INFO L274 CegarLoopResult]: For program point L204(lines 204 219) no Hoare annotation was computed. [2020-10-20 00:00:39,846 INFO L274 CegarLoopResult]: For program point L72(lines 72 87) no Hoare annotation was computed. [2020-10-20 00:00:39,846 INFO L274 CegarLoopResult]: For program point L320(lines 320 335) no Hoare annotation was computed. [2020-10-20 00:00:39,846 INFO L274 CegarLoopResult]: For program point L188(lines 188 203) no Hoare annotation was computed. [2020-10-20 00:00:39,847 INFO L274 CegarLoopResult]: For program point L56(lines 56 71) no Hoare annotation was computed. [2020-10-20 00:00:39,847 INFO L270 CegarLoopResult]: At program point L337(lines 25 341) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~this_sink~0 0))) (or (= ULTIMATE.start_main_~q~0 0) (and (<= 3 ULTIMATE.start_main_~q~0) (not .cse0)) (and (= ULTIMATE.start_main_~q~0 2) .cse0))) [2020-10-20 00:00:39,847 INFO L274 CegarLoopResult]: For program point L304(lines 304 319) no Hoare annotation was computed. [2020-10-20 00:00:39,847 INFO L274 CegarLoopResult]: For program point L172(lines 172 187) no Hoare annotation was computed. [2020-10-20 00:00:39,848 INFO L274 CegarLoopResult]: For program point L288(lines 288 303) no Hoare annotation was computed. [2020-10-20 00:00:39,848 INFO L274 CegarLoopResult]: For program point L156(lines 156 171) no Hoare annotation was computed. [2020-10-20 00:00:39,848 INFO L274 CegarLoopResult]: For program point L90(lines 90 101) no Hoare annotation was computed. [2020-10-20 00:00:39,848 INFO L274 CegarLoopResult]: For program point L272(lines 272 287) no Hoare annotation was computed. [2020-10-20 00:00:39,848 INFO L274 CegarLoopResult]: For program point L206(lines 206 217) no Hoare annotation was computed. [2020-10-20 00:00:39,848 INFO L274 CegarLoopResult]: For program point L140(lines 140 155) no Hoare annotation was computed. [2020-10-20 00:00:39,848 INFO L274 CegarLoopResult]: For program point L107(lines 107 222) no Hoare annotation was computed. [2020-10-20 00:00:39,848 INFO L274 CegarLoopResult]: For program point L74(lines 74 85) no Hoare annotation was computed. [2020-10-20 00:00:39,849 INFO L274 CegarLoopResult]: For program point L322(lines 322 333) no Hoare annotation was computed. [2020-10-20 00:00:39,849 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-20 00:00:39,849 INFO L274 CegarLoopResult]: For program point L256(lines 256 271) no Hoare annotation was computed. [2020-10-20 00:00:39,849 INFO L274 CegarLoopResult]: For program point L223(lines 223 338) no Hoare annotation was computed. [2020-10-20 00:00:39,849 INFO L274 CegarLoopResult]: For program point L190(lines 190 201) no Hoare annotation was computed. [2020-10-20 00:00:39,849 INFO L274 CegarLoopResult]: For program point L124(lines 124 139) no Hoare annotation was computed. [2020-10-20 00:00:39,850 INFO L274 CegarLoopResult]: For program point L58(lines 58 69) no Hoare annotation was computed. [2020-10-20 00:00:39,850 INFO L270 CegarLoopResult]: At program point L25-2(lines 25 341) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~this_sink~0 0))) (or (and (= ULTIMATE.start_main_~q~0 0) .cse0) (and (<= 3 ULTIMATE.start_main_~q~0) (not .cse0)))) [2020-10-20 00:00:39,850 INFO L274 CegarLoopResult]: For program point L25-3(lines 25 341) no Hoare annotation was computed. [2020-10-20 00:00:39,850 INFO L274 CegarLoopResult]: For program point L306(lines 306 317) no Hoare annotation was computed. [2020-10-20 00:00:39,850 INFO L274 CegarLoopResult]: For program point L240(lines 240 255) no Hoare annotation was computed. [2020-10-20 00:00:39,850 INFO L274 CegarLoopResult]: For program point L174(lines 174 185) no Hoare annotation was computed. [2020-10-20 00:00:39,851 INFO L274 CegarLoopResult]: For program point L108(lines 108 123) no Hoare annotation was computed. [2020-10-20 00:00:39,851 INFO L274 CegarLoopResult]: For program point L42(lines 42 44) no Hoare annotation was computed. [2020-10-20 00:00:39,851 INFO L274 CegarLoopResult]: For program point L290(lines 290 301) no Hoare annotation was computed. [2020-10-20 00:00:39,851 INFO L274 CegarLoopResult]: For program point L224(lines 224 239) no Hoare annotation was computed. [2020-10-20 00:00:39,851 INFO L274 CegarLoopResult]: For program point L158(lines 158 169) no Hoare annotation was computed. [2020-10-20 00:00:39,851 INFO L274 CegarLoopResult]: For program point L274(lines 274 285) no Hoare annotation was computed. [2020-10-20 00:00:39,851 INFO L274 CegarLoopResult]: For program point L142(lines 142 153) no Hoare annotation was computed. [2020-10-20 00:00:39,852 INFO L274 CegarLoopResult]: For program point L258(lines 258 269) no Hoare annotation was computed. [2020-10-20 00:00:39,852 INFO L274 CegarLoopResult]: For program point L126(lines 126 137) no Hoare annotation was computed. [2020-10-20 00:00:39,852 INFO L274 CegarLoopResult]: For program point L242(lines 242 253) no Hoare annotation was computed. [2020-10-20 00:00:39,852 INFO L274 CegarLoopResult]: For program point L110(lines 110 121) no Hoare annotation was computed. [2020-10-20 00:00:39,852 INFO L274 CegarLoopResult]: For program point L226(lines 226 237) no Hoare annotation was computed. [2020-10-20 00:00:39,852 INFO L274 CegarLoopResult]: For program point L94(lines 94 96) no Hoare annotation was computed. [2020-10-20 00:00:39,852 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-20 00:00:39,852 INFO L274 CegarLoopResult]: For program point L210(lines 210 212) no Hoare annotation was computed. [2020-10-20 00:00:39,853 INFO L274 CegarLoopResult]: For program point L78(lines 78 80) no Hoare annotation was computed. [2020-10-20 00:00:39,853 INFO L274 CegarLoopResult]: For program point L326(lines 326 328) no Hoare annotation was computed. [2020-10-20 00:00:39,853 INFO L274 CegarLoopResult]: For program point L194(lines 194 196) no Hoare annotation was computed. [2020-10-20 00:00:39,853 INFO L274 CegarLoopResult]: For program point L62(lines 62 64) no Hoare annotation was computed. [2020-10-20 00:00:39,853 INFO L274 CegarLoopResult]: For program point L310(lines 310 312) no Hoare annotation was computed. [2020-10-20 00:00:39,853 INFO L274 CegarLoopResult]: For program point L178(lines 178 180) no Hoare annotation was computed. [2020-10-20 00:00:39,854 INFO L270 CegarLoopResult]: At program point L327(lines 15 346) the Hoare annotation is: false [2020-10-20 00:00:39,854 INFO L274 CegarLoopResult]: For program point L294(lines 294 296) no Hoare annotation was computed. [2020-10-20 00:00:39,854 INFO L274 CegarLoopResult]: For program point L162(lines 162 164) no Hoare annotation was computed. [2020-10-20 00:00:39,854 INFO L274 CegarLoopResult]: For program point L278(lines 278 280) no Hoare annotation was computed. [2020-10-20 00:00:39,854 INFO L274 CegarLoopResult]: For program point L146(lines 146 148) no Hoare annotation was computed. [2020-10-20 00:00:39,854 INFO L274 CegarLoopResult]: For program point L262(lines 262 264) no Hoare annotation was computed. [2020-10-20 00:00:39,854 INFO L274 CegarLoopResult]: For program point L130(lines 130 132) no Hoare annotation was computed. [2020-10-20 00:00:39,855 INFO L274 CegarLoopResult]: For program point L246(lines 246 248) no Hoare annotation was computed. [2020-10-20 00:00:39,855 INFO L274 CegarLoopResult]: For program point L114(lines 114 116) no Hoare annotation was computed. [2020-10-20 00:00:39,855 INFO L277 CegarLoopResult]: At program point L15(lines 15 346) the Hoare annotation is: true [2020-10-20 00:00:39,855 INFO L274 CegarLoopResult]: For program point L230(lines 230 232) no Hoare annotation was computed. [2020-10-20 00:00:39,855 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-20 00:00:39,855 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-20 00:00:39,855 INFO L274 CegarLoopResult]: For program point L35(lines 35 54) no Hoare annotation was computed. [2020-10-20 00:00:39,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:00:39 BoogieIcfgContainer [2020-10-20 00:00:39,884 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:00:39,885 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:00:39,885 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:00:39,885 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:00:39,886 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:00:38" (3/4) ... [2020-10-20 00:00:39,903 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 00:00:39,934 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-10-20 00:00:39,934 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-20 00:00:39,934 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 00:00:39,935 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 00:00:39,978 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:00:39,978 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:00:39,981 INFO L168 Benchmark]: Toolchain (without parser) took 2510.89 ms. Allocated memory was 36.7 MB in the beginning and 52.4 MB in the end (delta: 15.7 MB). Free memory was 20.1 MB in the beginning and 22.1 MB in the end (delta: -2.0 MB). Peak memory consumption was 13.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:00:39,982 INFO L168 Benchmark]: CDTParser took 0.76 ms. Allocated memory is still 34.1 MB. Free memory was 12.4 MB in the beginning and 12.4 MB in the end (delta: 45.6 kB). Peak memory consumption was 45.6 kB. Max. memory is 14.3 GB. [2020-10-20 00:00:39,983 INFO L168 Benchmark]: CACSL2BoogieTranslator took 411.45 ms. Allocated memory was 36.7 MB in the beginning and 44.0 MB in the end (delta: 7.3 MB). Free memory was 19.2 MB in the beginning and 24.2 MB in the end (delta: -5.0 MB). Peak memory consumption was 10.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:00:39,984 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.61 ms. Allocated memory is still 44.0 MB. Free memory was 24.2 MB in the beginning and 22.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:00:39,985 INFO L168 Benchmark]: Boogie Preprocessor took 35.79 ms. Allocated memory is still 44.0 MB. Free memory was 22.0 MB in the beginning and 20.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:00:39,986 INFO L168 Benchmark]: RCFGBuilder took 650.00 ms. Allocated memory was 44.0 MB in the beginning and 46.7 MB in the end (delta: 2.6 MB). Free memory was 20.1 MB in the beginning and 25.0 MB in the end (delta: -4.9 MB). Peak memory consumption was 12.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:00:39,987 INFO L168 Benchmark]: TraceAbstraction took 1255.73 ms. Allocated memory was 46.7 MB in the beginning and 52.4 MB in the end (delta: 5.8 MB). Free memory was 24.7 MB in the beginning and 25.3 MB in the end (delta: -669.0 kB). Peak memory consumption was 5.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:00:39,988 INFO L168 Benchmark]: Witness Printer took 93.59 ms. Allocated memory is still 52.4 MB. Free memory was 25.3 MB in the beginning and 22.1 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:00:39,993 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.76 ms. Allocated memory is still 34.1 MB. Free memory was 12.4 MB in the beginning and 12.4 MB in the end (delta: 45.6 kB). Peak memory consumption was 45.6 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 411.45 ms. Allocated memory was 36.7 MB in the beginning and 44.0 MB in the end (delta: 7.3 MB). Free memory was 19.2 MB in the beginning and 24.2 MB in the end (delta: -5.0 MB). Peak memory consumption was 10.9 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 53.61 ms. Allocated memory is still 44.0 MB. Free memory was 24.2 MB in the beginning and 22.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 35.79 ms. Allocated memory is still 44.0 MB. Free memory was 22.0 MB in the beginning and 20.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. * RCFGBuilder took 650.00 ms. Allocated memory was 44.0 MB in the beginning and 46.7 MB in the end (delta: 2.6 MB). Free memory was 20.1 MB in the beginning and 25.0 MB in the end (delta: -4.9 MB). Peak memory consumption was 12.4 MB. Max. memory is 14.3 GB. * TraceAbstraction took 1255.73 ms. Allocated memory was 46.7 MB in the beginning and 52.4 MB in the end (delta: 5.8 MB). Free memory was 24.7 MB in the beginning and 25.3 MB in the end (delta: -669.0 kB). Peak memory consumption was 5.1 MB. Max. memory is 14.3 GB. * Witness Printer took 93.59 ms. Allocated memory is still 52.4 MB. Free memory was 25.3 MB in the beginning and 22.1 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (q == 0 && this_sink == 0) || (3 <= q && !(this_sink == 0)) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (q == 0 || (3 <= q && !(this_sink == 0))) || (q == 2 && this_sink == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.0s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 515 SDtfs, 140 SDslu, 283 SDs, 0 SdLazy, 83 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred in iteration=4, 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, 6 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 12 NumberOfFragments, 37 HoareAnnotationTreeSize, 4 FomulaSimplifications, 30 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 4362 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 19/19 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...