./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 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_1.5.800.v20200727-1323.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/list-simple/dll2n_update_all_reverse.i -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 3a501c55d63fd9a2de7fb7a25d7fd900352e0181 ................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-25 22:11:33,328 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 22:11:33,330 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 22:11:33,383 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 22:11:33,384 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 22:11:33,390 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 22:11:33,392 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 22:11:33,399 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 22:11:33,402 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 22:11:33,408 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 22:11:33,410 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 22:11:33,415 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 22:11:33,415 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 22:11:33,419 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 22:11:33,421 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 22:11:33,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 22:11:33,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 22:11:33,428 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 22:11:33,431 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 22:11:33,438 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 22:11:33,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 22:11:33,443 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 22:11:33,447 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 22:11:33,448 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 22:11:33,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 22:11:33,460 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 22:11:33,460 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 22:11:33,463 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 22:11:33,463 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 22:11:33,464 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 22:11:33,465 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 22:11:33,466 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 22:11:33,468 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 22:11:33,469 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 22:11:33,470 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 22:11:33,471 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 22:11:33,471 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 22:11:33,472 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 22:11:33,472 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 22:11:33,474 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 22:11:33,477 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 22:11:33,478 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 22:11:33,539 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 22:11:33,540 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 22:11:33,543 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 22:11:33,543 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 22:11:33,544 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 22:11:33,544 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 22:11:33,544 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 22:11:33,544 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 22:11:33,545 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 22:11:33,545 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 22:11:33,546 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 22:11:33,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 22:11:33,547 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 22:11:33,547 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 22:11:33,547 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 22:11:33,548 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 22:11:33,548 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 22:11:33,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 22:11:33,548 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 22:11:33,549 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 22:11:33,549 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 22:11:33,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 22:11:33,550 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 22:11:33,550 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 22:11:33,550 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 22:11:33,550 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 22:11:33,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 22:11:33,551 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 22:11:33,551 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 22:11:33,551 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a501c55d63fd9a2de7fb7a25d7fd900352e0181 [2020-10-25 22:11:33,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 22:11:34,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 22:11:34,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 22:11:34,013 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 22:11:34,014 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 22:11:34,015 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i [2020-10-25 22:11:34,088 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb6649f65/549d844953624740923c092adde67c3a/FLAGaeef19c1d [2020-10-25 22:11:34,882 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 22:11:34,883 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i [2020-10-25 22:11:34,910 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb6649f65/549d844953624740923c092adde67c3a/FLAGaeef19c1d [2020-10-25 22:11:35,199 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb6649f65/549d844953624740923c092adde67c3a [2020-10-25 22:11:35,211 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 22:11:35,222 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 22:11:35,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 22:11:35,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 22:11:35,232 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 22:11:35,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:11:35" (1/1) ... [2020-10-25 22:11:35,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c1ed375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:11:35, skipping insertion in model container [2020-10-25 22:11:35,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:11:35" (1/1) ... [2020-10-25 22:11:35,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 22:11:35,326 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 22:11:35,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:11:35,746 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 22:11:35,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:11:35,863 INFO L208 MainTranslator]: Completed translation [2020-10-25 22:11:35,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:11:35 WrapperNode [2020-10-25 22:11:35,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 22:11:35,866 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 22:11:35,866 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 22:11:35,866 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 22:11:35,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:11:35" (1/1) ... [2020-10-25 22:11:35,892 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:11:35" (1/1) ... [2020-10-25 22:11:35,927 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 22:11:35,928 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 22:11:35,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 22:11:35,929 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 22:11:35,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:11:35" (1/1) ... [2020-10-25 22:11:35,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:11:35" (1/1) ... [2020-10-25 22:11:35,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:11:35" (1/1) ... [2020-10-25 22:11:35,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:11:35" (1/1) ... [2020-10-25 22:11:35,955 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:11:35" (1/1) ... [2020-10-25 22:11:35,961 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:11:35" (1/1) ... [2020-10-25 22:11:35,964 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:11:35" (1/1) ... [2020-10-25 22:11:35,967 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 22:11:35,968 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 22:11:35,969 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 22:11:35,969 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 22:11:35,970 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:11:35" (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 [2020-10-25 22:11:36,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-25 22:11:36,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-25 22:11:36,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-25 22:11:36,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-25 22:11:36,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 22:11:36,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-25 22:11:36,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 22:11:36,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 22:11:36,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 22:11:36,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 22:11:36,550 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 22:11:36,550 INFO L298 CfgBuilder]: Removed 22 assume(true) statements. [2020-10-25 22:11:36,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:11:36 BoogieIcfgContainer [2020-10-25 22:11:36,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 22:11:36,557 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 22:11:36,558 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 22:11:36,561 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 22:11:36,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 10:11:35" (1/3) ... [2020-10-25 22:11:36,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d790479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:11:36, skipping insertion in model container [2020-10-25 22:11:36,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:11:35" (2/3) ... [2020-10-25 22:11:36,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d790479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:11:36, skipping insertion in model container [2020-10-25 22:11:36,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:11:36" (3/3) ... [2020-10-25 22:11:36,566 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2n_update_all_reverse.i [2020-10-25 22:11:36,591 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 22:11:36,597 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 22:11:36,612 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 22:11:36,661 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 22:11:36,662 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 22:11:36,662 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 22:11:36,662 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 22:11:36,663 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 22:11:36,663 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 22:11:36,663 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 22:11:36,663 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 22:11:36,685 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-10-25 22:11:36,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-25 22:11:36,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:11:36,692 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:11:36,693 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:11:36,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:11:36,700 INFO L82 PathProgramCache]: Analyzing trace with hash 880239487, now seen corresponding path program 1 times [2020-10-25 22:11:36,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:11:36,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017910037] [2020-10-25 22:11:36,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:11:36,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:11:36,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:11:36,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017910037] [2020-10-25 22:11:36,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:11:36,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 22:11:36,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883590689] [2020-10-25 22:11:36,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 22:11:36,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:11:36,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 22:11:36,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 22:11:36,999 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-10-25 22:11:37,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:11:37,043 INFO L93 Difference]: Finished difference Result 61 states and 91 transitions. [2020-10-25 22:11:37,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 22:11:37,046 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-25 22:11:37,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:11:37,056 INFO L225 Difference]: With dead ends: 61 [2020-10-25 22:11:37,056 INFO L226 Difference]: Without dead ends: 29 [2020-10-25 22:11:37,060 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 [2020-10-25 22:11:37,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-25 22:11:37,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2020-10-25 22:11:37,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-25 22:11:37,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2020-10-25 22:11:37,098 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 15 [2020-10-25 22:11:37,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:11:37,099 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2020-10-25 22:11:37,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 22:11:37,099 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2020-10-25 22:11:37,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-25 22:11:37,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:11:37,100 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:11:37,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 22:11:37,101 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:11:37,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:11:37,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1809396756, now seen corresponding path program 1 times [2020-10-25 22:11:37,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:11:37,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668003875] [2020-10-25 22:11:37,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:11:37,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:11:37,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:11:37,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668003875] [2020-10-25 22:11:37,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:11:37,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 22:11:37,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735564807] [2020-10-25 22:11:37,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 22:11:37,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:11:37,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 22:11:37,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 22:11:37,187 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand 3 states. [2020-10-25 22:11:37,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:11:37,218 INFO L93 Difference]: Finished difference Result 51 states and 62 transitions. [2020-10-25 22:11:37,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 22:11:37,219 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-10-25 22:11:37,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:11:37,220 INFO L225 Difference]: With dead ends: 51 [2020-10-25 22:11:37,221 INFO L226 Difference]: Without dead ends: 29 [2020-10-25 22:11:37,222 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 [2020-10-25 22:11:37,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-25 22:11:37,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-10-25 22:11:37,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-25 22:11:37,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2020-10-25 22:11:37,228 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 20 [2020-10-25 22:11:37,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:11:37,229 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2020-10-25 22:11:37,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 22:11:37,229 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2020-10-25 22:11:37,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-25 22:11:37,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:11:37,231 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:11:37,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 22:11:37,231 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:11:37,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:11:37,232 INFO L82 PathProgramCache]: Analyzing trace with hash 529533078, now seen corresponding path program 1 times [2020-10-25 22:11:37,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:11:37,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682113117] [2020-10-25 22:11:37,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:11:37,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:11:37,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:11:37,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682113117] [2020-10-25 22:11:37,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310842013] [2020-10-25 22:11:37,325 INFO L95 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 [2020-10-25 22:11:37,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:11:37,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-25 22:11:37,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:11:37,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:11:37,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-25 22:11:37,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-10-25 22:11:37,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624492823] [2020-10-25 22:11:37,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 22:11:37,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:11:37,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 22:11:37,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-25 22:11:37,507 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 5 states. [2020-10-25 22:11:37,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:11:37,536 INFO L93 Difference]: Finished difference Result 47 states and 56 transitions. [2020-10-25 22:11:37,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 22:11:37,544 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-25 22:11:37,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:11:37,545 INFO L225 Difference]: With dead ends: 47 [2020-10-25 22:11:37,545 INFO L226 Difference]: Without dead ends: 30 [2020-10-25 22:11:37,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-25 22:11:37,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-25 22:11:37,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-25 22:11:37,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-25 22:11:37,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-10-25 22:11:37,552 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 20 [2020-10-25 22:11:37,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:11:37,553 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-10-25 22:11:37,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 22:11:37,553 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-10-25 22:11:37,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-25 22:11:37,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:11:37,555 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:11:37,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-25 22:11:37,769 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:11:37,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:11:37,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1721705821, now seen corresponding path program 1 times [2020-10-25 22:11:37,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:11:37,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706059508] [2020-10-25 22:11:37,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:11:37,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:11:37,949 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-25 22:11:37,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706059508] [2020-10-25 22:11:37,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:11:37,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-25 22:11:37,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903969938] [2020-10-25 22:11:37,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 22:11:37,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:11:37,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 22:11:37,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-25 22:11:37,952 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 4 states. [2020-10-25 22:11:37,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:11:37,983 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2020-10-25 22:11:37,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 22:11:37,984 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-25 22:11:37,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:11:37,985 INFO L225 Difference]: With dead ends: 36 [2020-10-25 22:11:37,985 INFO L226 Difference]: Without dead ends: 0 [2020-10-25 22:11:37,986 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 [2020-10-25 22:11:37,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-25 22:11:37,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-25 22:11:37,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-25 22:11:37,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-25 22:11:37,987 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2020-10-25 22:11:37,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:11:37,987 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-25 22:11:37,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 22:11:37,988 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-25 22:11:37,988 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-25 22:11:37,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-25 22:11:37,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-25 22:11:38,032 INFO L274 CegarLoopResult]: For program point L589(lines 589 591) no Hoare annotation was computed. [2020-10-25 22:11:38,033 INFO L274 CegarLoopResult]: For program point L589-1(lines 589 591) no Hoare annotation was computed. [2020-10-25 22:11:38,033 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-25 22:11:38,033 INFO L277 CegarLoopResult]: At program point L573(line 573) the Hoare annotation is: true [2020-10-25 22:11:38,033 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-25 22:11:38,033 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-10-25 22:11:38,034 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-25 22:11:38,034 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-10-25 22:11:38,034 INFO L270 CegarLoopResult]: At program point L615(lines 610 616) the Hoare annotation is: false [2020-10-25 22:11:38,034 INFO L274 CegarLoopResult]: For program point L633-2(lines 633 638) no Hoare annotation was computed. [2020-10-25 22:11:38,035 INFO L270 CegarLoopResult]: At program point L633-3(lines 633 638) the Hoare annotation is: (and (= ULTIMATE.start_main_~len~0 2) (<= 1 ULTIMATE.start_main_~i~0)) [2020-10-25 22:11:38,035 INFO L274 CegarLoopResult]: For program point L633-4(lines 633 638) no Hoare annotation was computed. [2020-10-25 22:11:38,035 INFO L274 CegarLoopResult]: For program point L617(lines 1 643) no Hoare annotation was computed. [2020-10-25 22:11:38,035 INFO L277 CegarLoopResult]: At program point L642(lines 624 643) the Hoare annotation is: true [2020-10-25 22:11:38,035 INFO L270 CegarLoopResult]: At program point L601(lines 585 602) the Hoare annotation is: (= ULTIMATE.start_main_~len~0 2) [2020-10-25 22:11:38,035 INFO L270 CegarLoopResult]: At program point L618-2(lines 618 621) the Hoare annotation is: (= 2 ULTIMATE.start_main_~len~0) [2020-10-25 22:11:38,036 INFO L274 CegarLoopResult]: For program point L618-3(lines 618 621) no Hoare annotation was computed. [2020-10-25 22:11:38,036 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-25 22:11:38,036 INFO L274 CegarLoopResult]: For program point L635(lines 635 637) no Hoare annotation was computed. [2020-10-25 22:11:38,037 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-25 22:11:38,037 INFO L270 CegarLoopResult]: At program point L611-2(lines 611 614) the Hoare annotation is: false [2020-10-25 22:11:38,037 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-25 22:11:38,037 INFO L274 CegarLoopResult]: For program point L611-3(lines 611 614) no Hoare annotation was computed. [2020-10-25 22:11:38,037 INFO L270 CegarLoopResult]: At program point L636(lines 624 643) the Hoare annotation is: false [2020-10-25 22:11:38,038 INFO L274 CegarLoopResult]: For program point L603(lines 603 609) no Hoare annotation was computed. [2020-10-25 22:11:38,038 INFO L274 CegarLoopResult]: For program point L595(lines 595 597) no Hoare annotation was computed. [2020-10-25 22:11:38,038 INFO L274 CegarLoopResult]: For program point L595-2(lines 595 597) no Hoare annotation was computed. [2020-10-25 22:11:38,038 INFO L270 CegarLoopResult]: At program point L587-2(lines 587 600) the Hoare annotation is: (= 2 ULTIMATE.start_main_~len~0) [2020-10-25 22:11:38,039 INFO L274 CegarLoopResult]: For program point L587-3(lines 587 600) no Hoare annotation was computed. [2020-10-25 22:11:38,039 INFO L277 CegarLoopResult]: At program point L604-2(lines 604 608) the Hoare annotation is: true [2020-10-25 22:11:38,039 INFO L270 CegarLoopResult]: At program point L629-2(lines 629 632) the Hoare annotation is: (= 2 ULTIMATE.start_main_~len~0) [2020-10-25 22:11:38,039 INFO L274 CegarLoopResult]: For program point L629-3(lines 629 632) no Hoare annotation was computed. [2020-10-25 22:11:38,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 10:11:38 BoogieIcfgContainer [2020-10-25 22:11:38,059 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 22:11:38,060 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 22:11:38,060 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 22:11:38,061 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 22:11:38,061 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:11:36" (3/4) ... [2020-10-25 22:11:38,065 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-25 22:11:38,079 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-10-25 22:11:38,079 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-10-25 22:11:38,080 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 22:11:38,080 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 22:11:38,146 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 22:11:38,146 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 22:11:38,151 INFO L168 Benchmark]: Toolchain (without parser) took 2934.30 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 31.7 MB in the beginning and 37.5 MB in the end (delta: -5.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 16.1 GB. [2020-10-25 22:11:38,153 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 39.8 MB. Free memory was 24.7 MB in the beginning and 24.6 MB in the end (delta: 37.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:11:38,154 INFO L168 Benchmark]: CACSL2BoogieTranslator took 637.72 ms. Allocated memory is still 48.2 MB. Free memory was 31.0 MB in the beginning and 19.4 MB in the end (delta: 11.7 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. [2020-10-25 22:11:38,155 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.79 ms. Allocated memory is still 48.2 MB. Free memory was 19.2 MB in the beginning and 29.7 MB in the end (delta: -10.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:11:38,158 INFO L168 Benchmark]: Boogie Preprocessor took 39.36 ms. Allocated memory is still 48.2 MB. Free memory was 29.7 MB in the beginning and 28.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:11:38,160 INFO L168 Benchmark]: RCFGBuilder took 585.29 ms. Allocated memory is still 48.2 MB. Free memory was 28.1 MB in the beginning and 18.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. [2020-10-25 22:11:38,161 INFO L168 Benchmark]: TraceAbstraction took 1502.18 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 18.0 MB in the beginning and 21.4 MB in the end (delta: -3.4 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. [2020-10-25 22:11:38,162 INFO L168 Benchmark]: Witness Printer took 86.59 ms. Allocated memory is still 58.7 MB. Free memory was 21.4 MB in the beginning and 37.5 MB in the end (delta: -16.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:11:38,170 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 39.8 MB. Free memory was 24.7 MB in the beginning and 24.6 MB in the end (delta: 37.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 637.72 ms. Allocated memory is still 48.2 MB. Free memory was 31.0 MB in the beginning and 19.4 MB in the end (delta: 11.7 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 61.79 ms. Allocated memory is still 48.2 MB. Free memory was 19.2 MB in the beginning and 29.7 MB in the end (delta: -10.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.36 ms. Allocated memory is still 48.2 MB. Free memory was 29.7 MB in the beginning and 28.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 585.29 ms. Allocated memory is still 48.2 MB. Free memory was 28.1 MB in the beginning and 18.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1502.18 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 18.0 MB in the beginning and 21.4 MB in the end (delta: -3.4 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. * Witness Printer took 86.59 ms. Allocated memory is still 58.7 MB. Free memory was 21.4 MB in the beginning and 37.5 MB in the end (delta: -16.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: 585]: Loop Invariant Derived loop invariant: len == 2 - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 2 == len - InvariantResult [Line: 629]: Loop Invariant Derived loop invariant: 2 == len - InvariantResult [Line: 618]: Loop Invariant Derived loop invariant: 2 == len - InvariantResult [Line: 573]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 624]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 624]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 611]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 633]: Loop Invariant Derived loop invariant: len == 2 && 1 <= i - InvariantResult [Line: 604]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.3s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 104 SDtfs, 33 SDslu, 116 SDs, 0 SdLazy, 26 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, 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, 4 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 11 PreInvPairs, 23 NumberOfFragments, 25 HoareAnnotationTreeSize, 11 FomulaSimplifications, 37 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 95 ConstructedInterpolants, 0 QuantifiedInterpolants, 3467 SizeOfPredicates, 3 NumberOfNonLiveVariables, 111 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 8/10 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...