./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/getNumbers3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f27a177-a090-4723-89a1-8fc934a970ad/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f27a177-a090-4723-89a1-8fc934a970ad/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f27a177-a090-4723-89a1-8fc934a970ad/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f27a177-a090-4723-89a1-8fc934a970ad/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/getNumbers3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f27a177-a090-4723-89a1-8fc934a970ad/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f27a177-a090-4723-89a1-8fc934a970ad/bin/uautomizer-YU5uOKAj3y --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c522d46e2ef8c6f97d600bd7187aa9b442df29a1c9828e86387b1c78c18556ba --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:07:26,276 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:07:26,279 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:07:26,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:07:26,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:07:26,344 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:07:26,345 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:07:26,348 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:07:26,351 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:07:26,352 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:07:26,354 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:07:26,356 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:07:26,356 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:07:26,358 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:07:26,360 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:07:26,362 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:07:26,364 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:07:26,365 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:07:26,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:07:26,371 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:07:26,374 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:07:26,376 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:07:26,378 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:07:26,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:07:26,384 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:07:26,384 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:07:26,385 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:07:26,387 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:07:26,387 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:07:26,389 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:07:26,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:07:26,390 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:07:26,391 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:07:26,393 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:07:26,394 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:07:26,395 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:07:26,396 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:07:26,396 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:07:26,396 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:07:26,398 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:07:26,398 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:07:26,400 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f27a177-a090-4723-89a1-8fc934a970ad/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-13 18:07:26,429 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:07:26,429 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:07:26,429 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:07:26,430 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:07:26,431 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:07:26,431 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:07:26,432 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:07:26,432 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:07:26,432 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:07:26,433 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:07:26,433 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:07:26,433 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 18:07:26,433 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:07:26,434 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:07:26,434 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:07:26,434 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 18:07:26,434 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 18:07:26,435 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 18:07:26,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:07:26,435 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 18:07:26,435 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:07:26,436 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:07:26,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:07:26,436 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:07:26,436 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:07:26,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:07:26,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:07:26,437 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:07:26,437 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:07:26,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:07:26,438 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:07:26,438 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f27a177-a090-4723-89a1-8fc934a970ad/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f27a177-a090-4723-89a1-8fc934a970ad/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c522d46e2ef8c6f97d600bd7187aa9b442df29a1c9828e86387b1c78c18556ba [2021-11-13 18:07:26,745 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:07:26,773 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:07:26,777 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:07:26,779 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:07:26,780 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:07:26,781 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f27a177-a090-4723-89a1-8fc934a970ad/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/memsafety-ext3/getNumbers3.c [2021-11-13 18:07:26,861 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f27a177-a090-4723-89a1-8fc934a970ad/bin/uautomizer-YU5uOKAj3y/data/f65494502/e3665d2630c8495e932ca841185a4203/FLAGcb9d80ae0 [2021-11-13 18:07:27,419 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:07:27,419 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f27a177-a090-4723-89a1-8fc934a970ad/sv-benchmarks/c/memsafety-ext3/getNumbers3.c [2021-11-13 18:07:27,426 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f27a177-a090-4723-89a1-8fc934a970ad/bin/uautomizer-YU5uOKAj3y/data/f65494502/e3665d2630c8495e932ca841185a4203/FLAGcb9d80ae0 [2021-11-13 18:07:27,793 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f27a177-a090-4723-89a1-8fc934a970ad/bin/uautomizer-YU5uOKAj3y/data/f65494502/e3665d2630c8495e932ca841185a4203 [2021-11-13 18:07:27,799 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:07:27,801 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-13 18:07:27,804 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:07:27,804 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:07:27,808 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:07:27,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:07:27" (1/1) ... [2021-11-13 18:07:27,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52e54a12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:07:27, skipping insertion in model container [2021-11-13 18:07:27,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:07:27" (1/1) ... [2021-11-13 18:07:27,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:07:27,838 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:07:28,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:07:28,035 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:07:28,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:07:28,070 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:07:28,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:07:28 WrapperNode [2021-11-13 18:07:28,071 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:07:28,073 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:07:28,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:07:28,075 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:07:28,090 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:07:28" (1/1) ... [2021-11-13 18:07:28,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:07:28" (1/1) ... [2021-11-13 18:07:28,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:07:28" (1/1) ... [2021-11-13 18:07:28,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:07:28" (1/1) ... [2021-11-13 18:07:28,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:07:28" (1/1) ... [2021-11-13 18:07:28,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:07:28" (1/1) ... [2021-11-13 18:07:28,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:07:28" (1/1) ... [2021-11-13 18:07:28,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:07:28,146 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:07:28,146 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:07:28,146 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:07:28,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:07:28" (1/1) ... [2021-11-13 18:07:28,157 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:07:28,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f27a177-a090-4723-89a1-8fc934a970ad/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:07:28,191 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f27a177-a090-4723-89a1-8fc934a970ad/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:07:28,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f27a177-a090-4723-89a1-8fc934a970ad/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:07:28,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-13 18:07:28,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:07:28,251 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers [2021-11-13 18:07:28,251 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-13 18:07:28,251 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers [2021-11-13 18:07:28,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 18:07:28,253 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-13 18:07:28,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-13 18:07:28,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:07:28,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:07:28,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 18:07:28,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:07:28,530 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:07:28,530 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-13 18:07:28,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:07:28 BoogieIcfgContainer [2021-11-13 18:07:28,532 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:07:28,534 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:07:28,535 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:07:28,539 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:07:28,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:07:27" (1/3) ... [2021-11-13 18:07:28,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b06973e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:07:28, skipping insertion in model container [2021-11-13 18:07:28,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:07:28" (2/3) ... [2021-11-13 18:07:28,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b06973e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:07:28, skipping insertion in model container [2021-11-13 18:07:28,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:07:28" (3/3) ... [2021-11-13 18:07:28,542 INFO L111 eAbstractionObserver]: Analyzing ICFG getNumbers3.c [2021-11-13 18:07:28,549 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:07:28,549 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-13 18:07:28,597 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:07:28,605 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 18:07:28,606 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-13 18:07:28,623 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 18 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-13 18:07:28,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-13 18:07:28,632 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:07:28,633 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:07:28,634 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting getNumbersErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr0REQUIRES_VIOLATION (and 1 more)] === [2021-11-13 18:07:28,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:07:28,640 INFO L85 PathProgramCache]: Analyzing trace with hash -335730452, now seen corresponding path program 1 times [2021-11-13 18:07:28,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:07:28,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078381868] [2021-11-13 18:07:28,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:07:28,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:07:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:07:28,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 18:07:28,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:07:28,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:07:28,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:07:28,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078381868] [2021-11-13 18:07:28,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078381868] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:07:28,891 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:07:28,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:07:28,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786796632] [2021-11-13 18:07:28,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:07:28,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:07:28,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:07:28,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:07:28,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:07:28,949 INFO L87 Difference]: Start difference. First operand has 25 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 18 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:07:29,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:07:29,090 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2021-11-13 18:07:29,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:07:29,093 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-11-13 18:07:29,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:07:29,125 INFO L225 Difference]: With dead ends: 33 [2021-11-13 18:07:29,125 INFO L226 Difference]: Without dead ends: 28 [2021-11-13 18:07:29,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:07:29,132 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 31 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.74ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 71.53ms IncrementalHoareTripleChecker+Time [2021-11-13 18:07:29,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 18 Invalid, 31 Unknown, 0 Unchecked, 2.74ms Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 71.53ms Time] [2021-11-13 18:07:29,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-13 18:07:29,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 18. [2021-11-13 18:07:29,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 10 states have (on average 1.3) internal successors, (13), 12 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 18:07:29,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-11-13 18:07:29,170 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 9 [2021-11-13 18:07:29,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:07:29,171 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-11-13 18:07:29,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:07:29,171 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-11-13 18:07:29,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-13 18:07:29,172 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:07:29,172 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:07:29,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:07:29,173 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting getNumbersErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr0REQUIRES_VIOLATION (and 1 more)] === [2021-11-13 18:07:29,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:07:29,174 INFO L85 PathProgramCache]: Analyzing trace with hash -335730451, now seen corresponding path program 1 times [2021-11-13 18:07:29,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:07:29,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151500228] [2021-11-13 18:07:29,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:07:29,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:07:29,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:07:29,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 18:07:29,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:07:29,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:07:29,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:07:29,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151500228] [2021-11-13 18:07:29,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151500228] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:07:29,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:07:29,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:07:29,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91869031] [2021-11-13 18:07:29,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:07:29,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:07:29,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:07:29,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:07:29,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:07:29,325 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:07:29,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:07:29,484 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2021-11-13 18:07:29,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:07:29,486 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-11-13 18:07:29,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:07:29,487 INFO L225 Difference]: With dead ends: 21 [2021-11-13 18:07:29,488 INFO L226 Difference]: Without dead ends: 21 [2021-11-13 18:07:29,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:07:29,494 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 15 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.91ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 81.78ms IncrementalHoareTripleChecker+Time [2021-11-13 18:07:29,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 16 Invalid, 39 Unknown, 0 Unchecked, 1.91ms Time], IncrementalHoareTripleChecker [6 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 81.78ms Time] [2021-11-13 18:07:29,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-13 18:07:29,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2021-11-13 18:07:29,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 12 states have (on average 1.25) internal successors, (15), 14 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 18:07:29,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2021-11-13 18:07:29,507 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 9 [2021-11-13 18:07:29,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:07:29,508 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2021-11-13 18:07:29,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 18:07:29,508 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2021-11-13 18:07:29,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-13 18:07:29,510 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:07:29,511 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:07:29,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 18:07:29,513 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting getNumbersErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr0REQUIRES_VIOLATION (and 1 more)] === [2021-11-13 18:07:29,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:07:29,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1232932722, now seen corresponding path program 1 times [2021-11-13 18:07:29,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:07:29,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193596863] [2021-11-13 18:07:29,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:07:29,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:07:29,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:07:29,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 18:07:29,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:07:29,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:07:29,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:07:29,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193596863] [2021-11-13 18:07:29,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193596863] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:07:29,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197433339] [2021-11-13 18:07:29,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:07:29,803 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:07:29,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f27a177-a090-4723-89a1-8fc934a970ad/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:07:29,812 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f27a177-a090-4723-89a1-8fc934a970ad/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:07:29,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f27a177-a090-4723-89a1-8fc934a970ad/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 18:07:29,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:07:29,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 18:07:29,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:07:29,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-13 18:07:30,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:07:30,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:07:30,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:07:30,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197433339] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:07:30,394 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:07:30,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2021-11-13 18:07:30,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377484397] [2021-11-13 18:07:30,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:07:30,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 18:07:30,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:07:30,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 18:07:30,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:07:30,398 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 18:07:30,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:07:30,622 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2021-11-13 18:07:30,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 18:07:30,623 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 12 [2021-11-13 18:07:30,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:07:30,625 INFO L225 Difference]: With dead ends: 27 [2021-11-13 18:07:30,625 INFO L226 Difference]: Without dead ends: 27 [2021-11-13 18:07:30,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2021-11-13 18:07:30,629 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 29 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 86.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.23ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 108.19ms IncrementalHoareTripleChecker+Time [2021-11-13 18:07:30,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 34 Invalid, 105 Unknown, 0 Unchecked, 7.23ms Time], IncrementalHoareTripleChecker [22 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 108.19ms Time] [2021-11-13 18:07:30,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-13 18:07:30,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-11-13 18:07:30,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 20 states have (on average 1.1) internal successors, (22), 21 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 18:07:30,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2021-11-13 18:07:30,640 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 12 [2021-11-13 18:07:30,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:07:30,641 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2021-11-13 18:07:30,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 18:07:30,642 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2021-11-13 18:07:30,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-13 18:07:30,644 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:07:30,645 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:07:30,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f27a177-a090-4723-89a1-8fc934a970ad/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-13 18:07:30,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f27a177-a090-4723-89a1-8fc934a970ad/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:07:30,871 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr0REQUIRES_VIOLATION (and 1 more)] === [2021-11-13 18:07:30,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:07:30,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1477178083, now seen corresponding path program 1 times [2021-11-13 18:07:30,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:07:30,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010990639] [2021-11-13 18:07:30,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:07:30,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:07:30,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:07:30,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 18:07:30,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:07:30,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-13 18:07:30,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:07:30,981 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-13 18:07:30,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:07:30,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010990639] [2021-11-13 18:07:30,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010990639] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:07:30,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:07:30,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:07:30,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300204831] [2021-11-13 18:07:30,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:07:30,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:07:30,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:07:30,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:07:30,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:07:30,985 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 18:07:31,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:07:31,077 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2021-11-13 18:07:31,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 18:07:31,078 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2021-11-13 18:07:31,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:07:31,079 INFO L225 Difference]: With dead ends: 26 [2021-11-13 18:07:31,079 INFO L226 Difference]: Without dead ends: 26 [2021-11-13 18:07:31,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-13 18:07:31,081 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.63ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.51ms IncrementalHoareTripleChecker+Time [2021-11-13 18:07:31,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 32 Invalid, 59 Unknown, 0 Unchecked, 1.63ms Time], IncrementalHoareTripleChecker [7 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 44.51ms Time] [2021-11-13 18:07:31,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-13 18:07:31,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-11-13 18:07:31,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 18:07:31,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2021-11-13 18:07:31,086 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 25 [2021-11-13 18:07:31,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:07:31,087 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2021-11-13 18:07:31,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 18:07:31,087 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2021-11-13 18:07:31,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-13 18:07:31,088 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:07:31,088 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:07:31,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 18:07:31,089 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr0REQUIRES_VIOLATION (and 1 more)] === [2021-11-13 18:07:31,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:07:31,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1477178082, now seen corresponding path program 1 times [2021-11-13 18:07:31,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:07:31,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532757690] [2021-11-13 18:07:31,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:07:31,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:07:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:07:31,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 18:07:31,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:07:31,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-13 18:07:31,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:07:31,287 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:07:31,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:07:31,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532757690] [2021-11-13 18:07:31,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532757690] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:07:31,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178963124] [2021-11-13 18:07:31,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:07:31,289 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:07:31,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f27a177-a090-4723-89a1-8fc934a970ad/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:07:31,293 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f27a177-a090-4723-89a1-8fc934a970ad/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:07:31,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f27a177-a090-4723-89a1-8fc934a970ad/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-13 18:07:31,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:07:31,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 18:07:31,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:07:31,446 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:07:31,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:07:31,606 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:07:31,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178963124] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:07:31,607 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 18:07:31,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2021-11-13 18:07:31,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613329855] [2021-11-13 18:07:31,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 18:07:31,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-13 18:07:31,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:07:31,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-13 18:07:31,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2021-11-13 18:07:31,610 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 14 states have internal predecessors, (39), 2 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-13 18:07:31,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:07:31,994 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2021-11-13 18:07:31,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-13 18:07:31,995 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 14 states have internal predecessors, (39), 2 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25 [2021-11-13 18:07:31,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:07:31,997 INFO L225 Difference]: With dead ends: 44 [2021-11-13 18:07:31,997 INFO L226 Difference]: Without dead ends: 44 [2021-11-13 18:07:31,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=238, Invalid=574, Unknown=0, NotChecked=0, Total=812 [2021-11-13 18:07:31,999 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 59 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 94.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.12ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 116.51ms IncrementalHoareTripleChecker+Time [2021-11-13 18:07:31,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 44 Invalid, 108 Unknown, 0 Unchecked, 5.12ms Time], IncrementalHoareTripleChecker [27 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 116.51ms Time] [2021-11-13 18:07:32,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-11-13 18:07:32,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-11-13 18:07:32,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 38 states have (on average 1.0263157894736843) internal successors, (39), 38 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 18:07:32,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2021-11-13 18:07:32,017 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 25 [2021-11-13 18:07:32,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:07:32,017 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2021-11-13 18:07:32,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 14 states have internal predecessors, (39), 2 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-13 18:07:32,018 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2021-11-13 18:07:32,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-13 18:07:32,020 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:07:32,021 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:07:32,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f27a177-a090-4723-89a1-8fc934a970ad/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-13 18:07:32,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f27a177-a090-4723-89a1-8fc934a970ad/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:07:32,235 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, getNumbersErr0REQUIRES_VIOLATION (and 1 more)] === [2021-11-13 18:07:32,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:07:32,235 INFO L85 PathProgramCache]: Analyzing trace with hash 8599230, now seen corresponding path program 2 times [2021-11-13 18:07:32,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:07:32,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179274214] [2021-11-13 18:07:32,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:07:32,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:07:32,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:07:32,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 18:07:32,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:07:32,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-13 18:07:32,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:07:32,473 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-13 18:07:32,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:07:32,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179274214] [2021-11-13 18:07:32,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179274214] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:07:32,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:07:32,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:07:32,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83458707] [2021-11-13 18:07:32,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:07:32,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:07:32,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:07:32,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:07:32,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:07:32,477 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 18:07:32,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:07:32,600 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2021-11-13 18:07:32,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 18:07:32,603 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 43 [2021-11-13 18:07:32,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:07:32,606 INFO L225 Difference]: With dead ends: 43 [2021-11-13 18:07:32,606 INFO L226 Difference]: Without dead ends: 0 [2021-11-13 18:07:32,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-13 18:07:32,613 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.19ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.38ms IncrementalHoareTripleChecker+Time [2021-11-13 18:07:32,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 32 Invalid, 54 Unknown, 0 Unchecked, 1.19ms Time], IncrementalHoareTripleChecker [7 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 51.38ms Time] [2021-11-13 18:07:32,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-13 18:07:32,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-13 18:07:32,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:07:32,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-13 18:07:32,616 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2021-11-13 18:07:32,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:07:32,617 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-13 18:07:32,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 18:07:32,617 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-13 18:07:32,617 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-13 18:07:32,621 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0REQUIRES_VIOLATION (4 of 5 remaining) [2021-11-13 18:07:32,621 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr1REQUIRES_VIOLATION (3 of 5 remaining) [2021-11-13 18:07:32,622 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr2ENSURES_VIOLATIONMEMORY_LEAK (2 of 5 remaining) [2021-11-13 18:07:32,622 INFO L764 garLoopResultBuilder]: Registering result SAFE for location getNumbersErr0REQUIRES_VIOLATION (1 of 5 remaining) [2021-11-13 18:07:32,622 INFO L764 garLoopResultBuilder]: Registering result SAFE for location getNumbersErr1REQUIRES_VIOLATION (0 of 5 remaining) [2021-11-13 18:07:32,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 18:07:32,626 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2021-11-13 18:07:32,628 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 18:07:32,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 06:07:32 BoogieIcfgContainer [2021-11-13 18:07:32,633 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-13 18:07:32,652 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-13 18:07:32,653 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-13 18:07:32,653 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-13 18:07:32,654 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:07:28" (3/4) ... [2021-11-13 18:07:32,659 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-13 18:07:32,666 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-11-13 18:07:32,666 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-11-13 18:07:32,666 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure getNumbers [2021-11-13 18:07:32,676 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-11-13 18:07:32,676 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-13 18:07:32,677 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-13 18:07:32,713 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f27a177-a090-4723-89a1-8fc934a970ad/bin/uautomizer-YU5uOKAj3y/witness.graphml [2021-11-13 18:07:32,713 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-13 18:07:32,714 INFO L158 Benchmark]: Toolchain (without parser) took 4912.89ms. Allocated memory was 77.6MB in the beginning and 138.4MB in the end (delta: 60.8MB). Free memory was 42.5MB in the beginning and 113.7MB in the end (delta: -71.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:07:32,714 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 77.6MB. Free memory is still 58.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:07:32,715 INFO L158 Benchmark]: CACSL2BoogieTranslator took 267.30ms. Allocated memory was 77.6MB in the beginning and 115.3MB in the end (delta: 37.7MB). Free memory was 42.3MB in the beginning and 93.2MB in the end (delta: -50.9MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. [2021-11-13 18:07:32,716 INFO L158 Benchmark]: Boogie Preprocessor took 71.72ms. Allocated memory is still 115.3MB. Free memory was 93.2MB in the beginning and 91.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:07:32,716 INFO L158 Benchmark]: RCFGBuilder took 386.79ms. Allocated memory is still 115.3MB. Free memory was 91.6MB in the beginning and 82.2MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-13 18:07:32,717 INFO L158 Benchmark]: TraceAbstraction took 4117.20ms. Allocated memory was 115.3MB in the beginning and 138.4MB in the end (delta: 23.1MB). Free memory was 81.9MB in the beginning and 115.7MB in the end (delta: -33.8MB). Peak memory consumption was 48.8MB. Max. memory is 16.1GB. [2021-11-13 18:07:32,718 INFO L158 Benchmark]: Witness Printer took 60.89ms. Allocated memory is still 138.4MB. Free memory was 115.7MB in the beginning and 113.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 18:07:32,721 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 77.6MB. Free memory is still 58.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 267.30ms. Allocated memory was 77.6MB in the beginning and 115.3MB in the end (delta: 37.7MB). Free memory was 42.3MB in the beginning and 93.2MB in the end (delta: -50.9MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.72ms. Allocated memory is still 115.3MB. Free memory was 93.2MB in the beginning and 91.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 386.79ms. Allocated memory is still 115.3MB. Free memory was 91.6MB in the beginning and 82.2MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 4117.20ms. Allocated memory was 115.3MB in the beginning and 138.4MB in the end (delta: 23.1MB). Free memory was 81.9MB in the beginning and 115.7MB in the end (delta: -33.8MB). Peak memory consumption was 48.8MB. Max. memory is 16.1GB. * Witness Printer took 60.89ms. Allocated memory is still 138.4MB. Free memory was 115.7MB in the beginning and 113.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 14]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 12]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 6]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 6]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 4.0s, OverallIterations: 6, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 154 SdHoareTripleChecker+Valid, 473.90ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 154 mSDsluCounter, 176 SdHoareTripleChecker+Invalid, 391.23ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 113 mSDsCounter, 75 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 321 IncrementalHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 75 mSolverCounterUnsat, 63 mSDtfsCounter, 321 mSolverCounterSat, 19.83ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 142 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=5, InterpolantAutomatonStates: 55, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 160 NumberOfCodeBlocks, 160 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 187 ConstructedInterpolants, 0 QuantifiedInterpolants, 1020 SizeOfPredicates, 0 NumberOfNonLiveVariables, 155 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 167/239 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 - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-13 18:07:32,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f27a177-a090-4723-89a1-8fc934a970ad/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE