./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5617e6-1a91-4220-96d5-2b549e91a37c/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5617e6-1a91-4220-96d5-2b549e91a37c/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5617e6-1a91-4220-96d5-2b549e91a37c/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5617e6-1a91-4220-96d5-2b549e91a37c/bin/uautomizer-Z5i5R5N3CC/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5617e6-1a91-4220-96d5-2b549e91a37c/bin/uautomizer-Z5i5R5N3CC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5617e6-1a91-4220-96d5-2b549e91a37c/bin/uautomizer-Z5i5R5N3CC --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 a6853fb9e064ccfef5e54a8bac94eb86beeed80f ....................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:28:54,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:28:54,335 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:28:54,365 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:28:54,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:28:54,367 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:28:54,369 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:28:54,371 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:28:54,374 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:28:54,375 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:28:54,376 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:28:54,378 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:28:54,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:28:54,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:28:54,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:28:54,382 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:28:54,383 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:28:54,384 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:28:54,387 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:28:54,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:28:54,393 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:28:54,395 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:28:54,397 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:28:54,399 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:28:54,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:28:54,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:28:54,408 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:28:54,413 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:28:54,416 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:28:54,417 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:28:54,418 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:28:54,419 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:28:54,421 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:28:54,422 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:28:54,425 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:28:54,425 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:28:54,426 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:28:54,426 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:28:54,427 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:28:54,427 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:28:54,428 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:28:54,431 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5617e6-1a91-4220-96d5-2b549e91a37c/bin/uautomizer-Z5i5R5N3CC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-11 00:28:54,468 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:28:54,470 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:28:54,472 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:28:54,472 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:28:54,472 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:28:54,472 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:28:54,473 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:28:54,473 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 00:28:54,473 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:28:54,473 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:28:54,473 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:28:54,473 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-11 00:28:54,474 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-11 00:28:54,474 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-11 00:28:54,474 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:28:54,474 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 00:28:54,474 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:28:54,474 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:28:54,475 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:28:54,475 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:28:54,475 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:28:54,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:28:54,476 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:28:54,476 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:28:54,476 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:28:54,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:28:54,480 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:28:54,480 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_cf5617e6-1a91-4220-96d5-2b549e91a37c/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5617e6-1a91-4220-96d5-2b549e91a37c/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6853fb9e064ccfef5e54a8bac94eb86beeed80f [2021-10-11 00:28:54,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:28:54,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:28:54,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:28:54,788 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:28:54,789 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:28:54,790 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5617e6-1a91-4220-96d5-2b549e91a37c/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c [2021-10-11 00:28:54,885 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5617e6-1a91-4220-96d5-2b549e91a37c/bin/uautomizer-Z5i5R5N3CC/data/8b17a787c/fd90d8f681054b0486ae58101d21aaf9/FLAG9dd262297 [2021-10-11 00:28:55,333 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:28:55,334 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5617e6-1a91-4220-96d5-2b549e91a37c/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-write.c [2021-10-11 00:28:55,340 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5617e6-1a91-4220-96d5-2b549e91a37c/bin/uautomizer-Z5i5R5N3CC/data/8b17a787c/fd90d8f681054b0486ae58101d21aaf9/FLAG9dd262297 [2021-10-11 00:28:55,736 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5617e6-1a91-4220-96d5-2b549e91a37c/bin/uautomizer-Z5i5R5N3CC/data/8b17a787c/fd90d8f681054b0486ae58101d21aaf9 [2021-10-11 00:28:55,738 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:28:55,739 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-11 00:28:55,741 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:28:55,741 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:28:55,744 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:28:55,745 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:28:55" (1/1) ... [2021-10-11 00:28:55,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4880f486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:55, skipping insertion in model container [2021-10-11 00:28:55,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:28:55" (1/1) ... [2021-10-11 00:28:55,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:28:55,766 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:28:55,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:28:55,934 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:28:55,952 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:28:55,964 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:28:55,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:55 WrapperNode [2021-10-11 00:28:55,965 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:28:55,966 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:28:55,966 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:28:55,966 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:28:55,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:55" (1/1) ... [2021-10-11 00:28:55,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:55" (1/1) ... [2021-10-11 00:28:55,984 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:55" (1/1) ... [2021-10-11 00:28:55,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:55" (1/1) ... [2021-10-11 00:28:55,991 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:55" (1/1) ... [2021-10-11 00:28:55,996 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:55" (1/1) ... [2021-10-11 00:28:55,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:55" (1/1) ... [2021-10-11 00:28:56,000 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:28:56,001 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:28:56,001 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:28:56,001 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:28:56,002 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:55" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5617e6-1a91-4220-96d5-2b549e91a37c/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:28:56,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-11 00:28:56,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:28:56,068 INFO L138 BoogieDeclarations]: Found implementation of procedure bar [2021-10-11 00:28:56,068 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-10-11 00:28:56,068 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-11 00:28:56,068 INFO L130 BoogieDeclarations]: Found specification of procedure bar [2021-10-11 00:28:56,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 00:28:56,069 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-10-11 00:28:56,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:28:56,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 00:28:56,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 00:28:56,070 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-11 00:28:56,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-11 00:28:56,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:28:56,330 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:28:56,331 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-11 00:28:56,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:28:56 BoogieIcfgContainer [2021-10-11 00:28:56,332 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:28:56,334 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:28:56,335 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:28:56,338 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:28:56,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:28:55" (1/3) ... [2021-10-11 00:28:56,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@be8e228 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:28:56, skipping insertion in model container [2021-10-11 00:28:56,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:28:55" (2/3) ... [2021-10-11 00:28:56,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@be8e228 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:28:56, skipping insertion in model container [2021-10-11 00:28:56,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:28:56" (3/3) ... [2021-10-11 00:28:56,342 INFO L111 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength2_-write.c [2021-10-11 00:28:56,356 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:28:56,359 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2021-10-11 00:28:56,371 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-10-11 00:28:56,396 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:28:56,396 INFO L378 AbstractCegarLoop]: Hoare is false [2021-10-11 00:28:56,396 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:28:56,397 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:28:56,397 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:28:56,397 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:28:56,397 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:28:56,397 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:28:56,412 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2021-10-11 00:28:56,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 00:28:56,427 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:28:56,427 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:28:56,428 INFO L429 AbstractCegarLoop]: === Iteration 1 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2021-10-11 00:28:56,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:56,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1403638412, now seen corresponding path program 1 times [2021-10-11 00:28:56,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:56,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732700623] [2021-10-11 00:28:56,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:56,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:56,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:28:56,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:56,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:56,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732700623] [2021-10-11 00:28:56,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:28:56,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:28:56,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841075042] [2021-10-11 00:28:56,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 00:28:56,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:28:56,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:28:56,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:28:56,690 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 3 states. [2021-10-11 00:28:56,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:28:56,798 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2021-10-11 00:28:56,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:28:56,800 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2021-10-11 00:28:56,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:28:56,808 INFO L225 Difference]: With dead ends: 52 [2021-10-11 00:28:56,809 INFO L226 Difference]: Without dead ends: 49 [2021-10-11 00:28:56,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:28:56,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-11 00:28:56,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-10-11 00:28:56,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2021-10-11 00:28:56,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2021-10-11 00:28:56,846 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 10 [2021-10-11 00:28:56,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:28:56,846 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2021-10-11 00:28:56,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 00:28:56,846 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2021-10-11 00:28:56,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 00:28:56,847 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:28:56,847 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:28:56,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:28:56,848 INFO L429 AbstractCegarLoop]: === Iteration 2 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2021-10-11 00:28:56,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:56,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1403995904, now seen corresponding path program 1 times [2021-10-11 00:28:56,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:56,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874210414] [2021-10-11 00:28:56,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:56,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:56,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:28:56,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:56,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:56,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874210414] [2021-10-11 00:28:56,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:28:56,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:28:56,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060020643] [2021-10-11 00:28:56,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:28:56,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:28:56,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:28:56,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:28:56,905 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand 4 states. [2021-10-11 00:28:57,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:28:57,032 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2021-10-11 00:28:57,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:28:57,033 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-10-11 00:28:57,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:28:57,038 INFO L225 Difference]: With dead ends: 56 [2021-10-11 00:28:57,038 INFO L226 Difference]: Without dead ends: 56 [2021-10-11 00:28:57,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:28:57,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-11 00:28:57,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 49. [2021-10-11 00:28:57,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2021-10-11 00:28:57,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2021-10-11 00:28:57,062 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 10 [2021-10-11 00:28:57,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:28:57,063 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2021-10-11 00:28:57,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:28:57,064 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2021-10-11 00:28:57,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 00:28:57,064 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:28:57,065 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:28:57,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:28:57,066 INFO L429 AbstractCegarLoop]: === Iteration 3 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2021-10-11 00:28:57,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:57,071 INFO L82 PathProgramCache]: Analyzing trace with hash -571487811, now seen corresponding path program 1 times [2021-10-11 00:28:57,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:57,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318709683] [2021-10-11 00:28:57,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:57,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:57,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:28:57,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:57,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:57,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318709683] [2021-10-11 00:28:57,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:28:57,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 00:28:57,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730216877] [2021-10-11 00:28:57,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 00:28:57,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:28:57,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:28:57,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:28:57,254 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 6 states. [2021-10-11 00:28:57,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:28:57,417 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2021-10-11 00:28:57,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 00:28:57,418 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2021-10-11 00:28:57,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:28:57,427 INFO L225 Difference]: With dead ends: 47 [2021-10-11 00:28:57,427 INFO L226 Difference]: Without dead ends: 47 [2021-10-11 00:28:57,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-11 00:28:57,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-11 00:28:57,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-10-11 00:28:57,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-10-11 00:28:57,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2021-10-11 00:28:57,442 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 11 [2021-10-11 00:28:57,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:28:57,443 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2021-10-11 00:28:57,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 00:28:57,443 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2021-10-11 00:28:57,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 00:28:57,444 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:28:57,444 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:28:57,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 00:28:57,445 INFO L429 AbstractCegarLoop]: === Iteration 4 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2021-10-11 00:28:57,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:57,446 INFO L82 PathProgramCache]: Analyzing trace with hash -571487810, now seen corresponding path program 1 times [2021-10-11 00:28:57,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:57,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034585564] [2021-10-11 00:28:57,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:57,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:57,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:28:57,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:57,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:57,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034585564] [2021-10-11 00:28:57,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:28:57,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 00:28:57,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895355661] [2021-10-11 00:28:57,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 00:28:57,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:28:57,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:28:57,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:28:57,617 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 6 states. [2021-10-11 00:28:57,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:28:57,858 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2021-10-11 00:28:57,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 00:28:57,858 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2021-10-11 00:28:57,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:28:57,862 INFO L225 Difference]: With dead ends: 72 [2021-10-11 00:28:57,863 INFO L226 Difference]: Without dead ends: 72 [2021-10-11 00:28:57,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-11 00:28:57,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-11 00:28:57,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 56. [2021-10-11 00:28:57,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-10-11 00:28:57,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2021-10-11 00:28:57,888 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 11 [2021-10-11 00:28:57,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:28:57,888 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2021-10-11 00:28:57,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 00:28:57,888 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2021-10-11 00:28:57,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 00:28:57,889 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:28:57,889 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:28:57,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 00:28:57,889 INFO L429 AbstractCegarLoop]: === Iteration 5 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2021-10-11 00:28:57,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:57,890 INFO L82 PathProgramCache]: Analyzing trace with hash -536252953, now seen corresponding path program 1 times [2021-10-11 00:28:57,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:57,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561106280] [2021-10-11 00:28:57,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:57,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:57,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-11 00:28:57,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:28:57,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:28:57,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561106280] [2021-10-11 00:28:57,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:28:57,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:28:57,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896444978] [2021-10-11 00:28:57,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:28:57,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:28:57,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:28:57,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:28:57,966 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand 4 states. [2021-10-11 00:28:58,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:28:58,049 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2021-10-11 00:28:58,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:28:58,049 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2021-10-11 00:28:58,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:28:58,053 INFO L225 Difference]: With dead ends: 55 [2021-10-11 00:28:58,053 INFO L226 Difference]: Without dead ends: 55 [2021-10-11 00:28:58,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:28:58,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-10-11 00:28:58,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-10-11 00:28:58,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-10-11 00:28:58,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2021-10-11 00:28:58,064 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 12 [2021-10-11 00:28:58,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:28:58,064 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2021-10-11 00:28:58,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:28:58,065 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2021-10-11 00:28:58,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 00:28:58,065 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:28:58,065 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:28:58,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 00:28:58,066 INFO L429 AbstractCegarLoop]: === Iteration 6 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2021-10-11 00:28:58,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:28:58,066 INFO L82 PathProgramCache]: Analyzing trace with hash -536252952, now seen corresponding path program 1 times [2021-10-11 00:28:58,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:28:58,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639954841] [2021-10-11 00:28:58,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:28:58,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:28:58,079 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:28:58,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:28:58,091 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:28:58,110 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:28:58,111 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 00:28:58,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 00:28:58,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:28:58 BoogieIcfgContainer [2021-10-11 00:28:58,132 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:28:58,132 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:28:58,133 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:28:58,133 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:28:58,133 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:28:56" (3/4) ... [2021-10-11 00:28:58,135 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 00:28:58,168 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf5617e6-1a91-4220-96d5-2b549e91a37c/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:28:58,168 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:28:58,170 INFO L168 Benchmark]: Toolchain (without parser) took 2429.74 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 90.2 MB in the beginning and 86.8 MB in the end (delta: 3.4 MB). Peak memory consumption was 27.0 MB. Max. memory is 16.1 GB. [2021-10-11 00:28:58,170 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 123.7 MB. Free memory was 96.7 MB in the beginning and 96.7 MB in the end (delta: 28.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:28:58,171 INFO L168 Benchmark]: CACSL2BoogieTranslator took 224.56 ms. Allocated memory is still 123.7 MB. Free memory was 90.0 MB in the beginning and 100.5 MB in the end (delta: -10.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:28:58,171 INFO L168 Benchmark]: Boogie Preprocessor took 34.24 ms. Allocated memory is still 123.7 MB. Free memory was 100.5 MB in the beginning and 98.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:28:58,172 INFO L168 Benchmark]: RCFGBuilder took 331.61 ms. Allocated memory is still 123.7 MB. Free memory was 98.4 MB in the beginning and 80.2 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-11 00:28:58,173 INFO L168 Benchmark]: TraceAbstraction took 1797.70 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 79.5 MB in the beginning and 88.9 MB in the end (delta: -9.4 MB). Peak memory consumption was 17.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:28:58,173 INFO L168 Benchmark]: Witness Printer took 35.73 ms. Allocated memory is still 148.9 MB. Free memory was 88.9 MB in the beginning and 86.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:28:58,176 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 123.7 MB. Free memory was 96.7 MB in the beginning and 96.7 MB in the end (delta: 28.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 224.56 ms. Allocated memory is still 123.7 MB. Free memory was 90.0 MB in the beginning and 100.5 MB in the end (delta: -10.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.24 ms. Allocated memory is still 123.7 MB. Free memory was 100.5 MB in the beginning and 98.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 331.61 ms. Allocated memory is still 123.7 MB. Free memory was 98.4 MB in the beginning and 80.2 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1797.70 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 79.5 MB in the beginning and 88.9 MB in the end (delta: -9.4 MB). Peak memory consumption was 17.1 MB. Max. memory is 16.1 GB. * Witness Printer took 35.73 ms. Allocated memory is still 148.9 MB. Free memory was 88.9 MB in the beginning and 86.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 23]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L32] int i, b[100]; [L33] i = 0 VAL [b={3:0}, i=0] [L33] COND TRUE i < 100 VAL [b={3:0}, i=0] [L34] CALL foo(i, b, i + 1) VAL [\old(n)=0, \old(size)=1, b={3:0}] [L21] int a[n], i; [L22] i = 0 VAL [\old(n)=0, \old(size)=1, a={2:0}, b={3:0}, b={3:0}, i=0, n=0, size=1] [L22] COND TRUE i < size VAL [\old(n)=0, \old(size)=1, a={2:0}, b={3:0}, b={3:0}, i=0, n=0, size=1] [L23] EXPR b[i] VAL [\old(n)=0, \old(size)=1, a={2:0}, b={3:0}, b={3:0}, b[i]=402, i=0, n=0, size=1] [L23] a[i] = b[i] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 52 locations, 11 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 200 SDtfs, 125 SDslu, 165 SDs, 0 SdLazy, 439 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 23 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 49 ConstructedInterpolants, 0 QuantifiedInterpolants, 1884 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 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 incorrect! Received shutdown request...