./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/list-ext-properties/simple-ext.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d8a226-5cec-4db4-8598-a9dc091ff8d0/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d8a226-5cec-4db4-8598-a9dc091ff8d0/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d8a226-5cec-4db4-8598-a9dc091ff8d0/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d8a226-5cec-4db4-8598-a9dc091ff8d0/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/simple-ext.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d8a226-5cec-4db4-8598-a9dc091ff8d0/bin/uautomizer-UnR33cPsHg/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d8a226-5cec-4db4-8598-a9dc091ff8d0/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 79d8454f49f42d774b494771accf13f0b47382db45ac5cfdb4c7afee633f8cd7 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 08:45:13,725 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:45:13,729 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:45:13,799 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:45:13,800 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:45:13,805 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:45:13,808 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:45:13,812 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:45:13,816 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:45:13,822 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:45:13,823 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:45:13,826 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:45:13,826 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:45:13,829 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:45:13,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:45:13,838 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:45:13,840 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:45:13,841 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:45:13,845 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:45:13,856 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:45:13,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:45:13,860 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:45:13,864 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:45:13,865 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:45:13,875 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:45:13,876 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:45:13,876 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:45:13,879 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:45:13,880 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:45:13,882 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:45:13,882 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:45:13,883 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:45:13,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:45:13,887 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:45:13,888 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:45:13,889 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:45:13,890 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:45:13,890 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:45:13,890 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:45:13,891 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:45:13,892 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:45:13,893 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d8a226-5cec-4db4-8598-a9dc091ff8d0/bin/uautomizer-UnR33cPsHg/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-10-28 08:45:13,947 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:45:13,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:45:13,948 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:45:13,949 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:45:13,957 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:45:13,958 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:45:13,958 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:45:13,958 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:45:13,959 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:45:13,959 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 08:45:13,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:45:13,961 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:45:13,961 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:45:13,961 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 08:45:13,961 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 08:45:13,962 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:45:13,962 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 08:45:13,962 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:45:13,962 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:45:13,963 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:45:13,963 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:45:13,963 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:45:13,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:45:13,964 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:45:13,964 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:45:13,964 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 08:45:13,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 08:45:13,965 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:45:13,965 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_49d8a226-5cec-4db4-8598-a9dc091ff8d0/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d8a226-5cec-4db4-8598-a9dc091ff8d0/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79d8454f49f42d774b494771accf13f0b47382db45ac5cfdb4c7afee633f8cd7 [2021-10-28 08:45:14,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:45:14,352 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:45:14,355 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:45:14,358 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:45:14,359 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:45:14,360 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d8a226-5cec-4db4-8598-a9dc091ff8d0/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/list-ext-properties/simple-ext.i [2021-10-28 08:45:14,443 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d8a226-5cec-4db4-8598-a9dc091ff8d0/bin/uautomizer-UnR33cPsHg/data/f901dcfe7/3f50101c2cbc4ed68cb17c1e807b63e3/FLAG533c4b47e [2021-10-28 08:45:15,083 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:45:15,084 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d8a226-5cec-4db4-8598-a9dc091ff8d0/sv-benchmarks/c/list-ext-properties/simple-ext.i [2021-10-28 08:45:15,107 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d8a226-5cec-4db4-8598-a9dc091ff8d0/bin/uautomizer-UnR33cPsHg/data/f901dcfe7/3f50101c2cbc4ed68cb17c1e807b63e3/FLAG533c4b47e [2021-10-28 08:45:15,369 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d8a226-5cec-4db4-8598-a9dc091ff8d0/bin/uautomizer-UnR33cPsHg/data/f901dcfe7/3f50101c2cbc4ed68cb17c1e807b63e3 [2021-10-28 08:45:15,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:45:15,373 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 08:45:15,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:45:15,376 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:45:15,380 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:45:15,381 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:45:15" (1/1) ... [2021-10-28 08:45:15,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6633c150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:45:15, skipping insertion in model container [2021-10-28 08:45:15,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:45:15" (1/1) ... [2021-10-28 08:45:15,390 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:45:15,430 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:45:15,754 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d8a226-5cec-4db4-8598-a9dc091ff8d0/sv-benchmarks/c/list-ext-properties/simple-ext.i[23272,23285] [2021-10-28 08:45:15,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:45:15,769 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:45:15,812 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d8a226-5cec-4db4-8598-a9dc091ff8d0/sv-benchmarks/c/list-ext-properties/simple-ext.i[23272,23285] [2021-10-28 08:45:15,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:45:15,847 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:45:15,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:45:15 WrapperNode [2021-10-28 08:45:15,848 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:45:15,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:45:15,849 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:45:15,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:45:15,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:45:15" (1/1) ... [2021-10-28 08:45:15,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:45:15" (1/1) ... [2021-10-28 08:45:15,877 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:45:15" (1/1) ... [2021-10-28 08:45:15,878 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:45:15" (1/1) ... [2021-10-28 08:45:15,895 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:45:15" (1/1) ... [2021-10-28 08:45:15,900 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:45:15" (1/1) ... [2021-10-28 08:45:15,904 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:45:15" (1/1) ... [2021-10-28 08:45:15,911 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:45:15,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:45:15,912 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:45:15,912 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:45:15,913 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:45:15" (1/1) ... [2021-10-28 08:45:15,921 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:45:15,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d8a226-5cec-4db4-8598-a9dc091ff8d0/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:45:15,946 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d8a226-5cec-4db4-8598-a9dc091ff8d0/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 08:45:15,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d8a226-5cec-4db4-8598-a9dc091ff8d0/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 08:45:16,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 08:45:16,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:45:16,000 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 08:45:16,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 08:45:16,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 08:45:16,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-28 08:45:16,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-28 08:45:16,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-28 08:45:16,003 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-10-28 08:45:16,003 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 08:45:16,004 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 08:45:16,005 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 08:45:16,005 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-28 08:45:16,005 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-28 08:45:16,005 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 08:45:16,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:45:16,005 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 08:45:16,006 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 08:45:16,006 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 08:45:16,006 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 08:45:16,006 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 08:45:16,006 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 08:45:16,006 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 08:45:16,007 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 08:45:16,007 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 08:45:16,007 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 08:45:16,007 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 08:45:16,007 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 08:45:16,007 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 08:45:16,008 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 08:45:16,008 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 08:45:16,008 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 08:45:16,008 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 08:45:16,008 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 08:45:16,008 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 08:45:16,009 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-28 08:45:16,009 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-28 08:45:16,009 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-28 08:45:16,009 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 08:45:16,009 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 08:45:16,009 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 08:45:16,009 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 08:45:16,010 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 08:45:16,010 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 08:45:16,010 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 08:45:16,010 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 08:45:16,010 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 08:45:16,011 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 08:45:16,011 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 08:45:16,011 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 08:45:16,012 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 08:45:16,012 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 08:45:16,013 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 08:45:16,013 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 08:45:16,013 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 08:45:16,013 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 08:45:16,013 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 08:45:16,014 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 08:45:16,014 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 08:45:16,014 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 08:45:16,014 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 08:45:16,014 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 08:45:16,014 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 08:45:16,015 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 08:45:16,015 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 08:45:16,015 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 08:45:16,015 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 08:45:16,017 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 08:45:16,017 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 08:45:16,017 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 08:45:16,018 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 08:45:16,018 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 08:45:16,018 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 08:45:16,018 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 08:45:16,018 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 08:45:16,019 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 08:45:16,019 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 08:45:16,019 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 08:45:16,019 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 08:45:16,020 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 08:45:16,020 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 08:45:16,021 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 08:45:16,025 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 08:45:16,025 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 08:45:16,025 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 08:45:16,026 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 08:45:16,026 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 08:45:16,026 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 08:45:16,026 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 08:45:16,026 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 08:45:16,026 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 08:45:16,027 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 08:45:16,027 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 08:45:16,027 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 08:45:16,027 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 08:45:16,027 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 08:45:16,027 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 08:45:16,028 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 08:45:16,028 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 08:45:16,028 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 08:45:16,028 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 08:45:16,028 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 08:45:16,029 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 08:45:16,029 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 08:45:16,029 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 08:45:16,029 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 08:45:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 08:45:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 08:45:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 08:45:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 08:45:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 08:45:16,031 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 08:45:16,031 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 08:45:16,031 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 08:45:16,032 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 08:45:16,032 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 08:45:16,032 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 08:45:16,032 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 08:45:16,032 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 08:45:16,032 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 08:45:16,033 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 08:45:16,033 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 08:45:16,033 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 08:45:16,033 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-10-28 08:45:16,034 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 08:45:16,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 08:45:16,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 08:45:16,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 08:45:16,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 08:45:16,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 08:45:16,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 08:45:16,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 08:45:16,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 08:45:16,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:45:16,428 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-10-28 08:45:16,716 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:45:16,718 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-10-28 08:45:16,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:45:16 BoogieIcfgContainer [2021-10-28 08:45:16,726 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:45:16,728 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 08:45:16,729 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 08:45:16,734 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 08:45:16,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:45:15" (1/3) ... [2021-10-28 08:45:16,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34ea77f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:45:16, skipping insertion in model container [2021-10-28 08:45:16,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:45:15" (2/3) ... [2021-10-28 08:45:16,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34ea77f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:45:16, skipping insertion in model container [2021-10-28 08:45:16,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:45:16" (3/3) ... [2021-10-28 08:45:16,739 INFO L111 eAbstractionObserver]: Analyzing ICFG simple-ext.i [2021-10-28 08:45:16,745 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 08:45:16,745 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2021-10-28 08:45:16,802 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 08:45:16,811 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 [2021-10-28 08:45:16,811 INFO L340 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2021-10-28 08:45:16,832 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 35 states have (on average 1.8857142857142857) internal successors, (66), 57 states have internal predecessors, (66), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 08:45:16,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 08:45:16,845 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:16,846 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:45:16,846 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr6REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 16 more)] === [2021-10-28 08:45:16,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:16,854 INFO L85 PathProgramCache]: Analyzing trace with hash 269519918, now seen corresponding path program 1 times [2021-10-28 08:45:16,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:16,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878276421] [2021-10-28 08:45:16,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:16,881 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:17,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:17,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:17,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:17,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:17,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:17,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878276421] [2021-10-28 08:45:17,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878276421] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:17,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:17,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:45:17,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629445357] [2021-10-28 08:45:17,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:45:17,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:17,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:45:17,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:45:17,165 INFO L87 Difference]: Start difference. First operand has 63 states, 35 states have (on average 1.8857142857142857) internal successors, (66), 57 states have internal predecessors, (66), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:45:17,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:17,312 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2021-10-28 08:45:17,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:45:17,315 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-10-28 08:45:17,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:17,323 INFO L225 Difference]: With dead ends: 63 [2021-10-28 08:45:17,323 INFO L226 Difference]: Without dead ends: 56 [2021-10-28 08:45:17,325 INFO L786 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 [2021-10-28 08:45:17,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-28 08:45:17,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-10-28 08:45:17,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 32 states have (on average 1.75) internal successors, (56), 52 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:45:17,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2021-10-28 08:45:17,365 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 10 [2021-10-28 08:45:17,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:17,365 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2021-10-28 08:45:17,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:45:17,366 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2021-10-28 08:45:17,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 08:45:17,367 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:17,367 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:45:17,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 08:45:17,368 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr6REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 16 more)] === [2021-10-28 08:45:17,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:17,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1309651495, now seen corresponding path program 1 times [2021-10-28 08:45:17,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:17,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671075694] [2021-10-28 08:45:17,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:17,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:17,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:17,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:17,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:17,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:17,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:17,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671075694] [2021-10-28 08:45:17,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671075694] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:17,473 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:17,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:45:17,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332288128] [2021-10-28 08:45:17,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:45:17,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:17,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:45:17,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:45:17,477 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:45:17,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:17,657 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions. [2021-10-28 08:45:17,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 08:45:17,657 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-10-28 08:45:17,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:17,659 INFO L225 Difference]: With dead ends: 74 [2021-10-28 08:45:17,659 INFO L226 Difference]: Without dead ends: 74 [2021-10-28 08:45:17,660 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:45:17,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-28 08:45:17,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 60. [2021-10-28 08:45:17,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 41 states have (on average 1.6585365853658536) internal successors, (68), 56 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:45:17,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2021-10-28 08:45:17,670 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 12 [2021-10-28 08:45:17,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:17,671 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2021-10-28 08:45:17,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:45:17,671 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2021-10-28 08:45:17,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 08:45:17,672 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:17,672 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:45:17,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 08:45:17,673 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr7REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 16 more)] === [2021-10-28 08:45:17,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:17,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1309651496, now seen corresponding path program 1 times [2021-10-28 08:45:17,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:17,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999351654] [2021-10-28 08:45:17,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:17,675 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:17,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:17,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 08:45:17,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:45:17,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:45:17,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:45:17,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999351654] [2021-10-28 08:45:17,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999351654] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:45:17,785 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:45:17,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:45:17,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881257989] [2021-10-28 08:45:17,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:45:17,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:45:17,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:45:17,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:45:17,787 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:45:17,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:45:17,992 INFO L93 Difference]: Finished difference Result 81 states and 87 transitions. [2021-10-28 08:45:17,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 08:45:17,992 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-10-28 08:45:17,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:45:17,994 INFO L225 Difference]: With dead ends: 81 [2021-10-28 08:45:17,995 INFO L226 Difference]: Without dead ends: 81 [2021-10-28 08:45:17,996 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:45:17,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-10-28 08:45:18,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 69. [2021-10-28 08:45:18,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 50 states have (on average 1.48) internal successors, (74), 65 states have internal predecessors, (74), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:45:18,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 77 transitions. [2021-10-28 08:45:18,018 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 77 transitions. Word has length 12 [2021-10-28 08:45:18,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:45:18,019 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 77 transitions. [2021-10-28 08:45:18,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:45:18,019 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 77 transitions. [2021-10-28 08:45:18,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 08:45:18,020 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:45:18,021 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:45:18,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 08:45:18,021 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr12ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 16 more)] === [2021-10-28 08:45:18,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:45:18,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1341518452, now seen corresponding path program 1 times [2021-10-28 08:45:18,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:45:18,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521898039] [2021-10-28 08:45:18,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:45:18,024 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:45:18,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:45:18,075 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:45:18,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:45:18,158 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:45:18,159 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 08:45:18,160 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr12ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 08:45:18,162 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-28 08:45:18,162 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-28 08:45:18,163 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-28 08:45:18,167 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-28 08:45:18,167 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-28 08:45:18,168 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-28 08:45:18,168 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-28 08:45:18,168 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-28 08:45:18,168 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-28 08:45:18,169 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-28 08:45:18,169 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-28 08:45:18,169 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-28 08:45:18,170 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-28 08:45:18,170 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-28 08:45:18,171 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-28 08:45:18,171 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-28 08:45:18,171 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:45:18,171 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:45:18,172 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 08:45:18,172 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 08:45:18,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 08:45:18,175 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-10-28 08:45:18,179 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 08:45:18,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 08:45:18 BoogieIcfgContainer [2021-10-28 08:45:18,219 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 08:45:18,220 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:45:18,220 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:45:18,220 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:45:18,220 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:45:16" (3/4) ... [2021-10-28 08:45:18,222 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 08:45:18,273 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d8a226-5cec-4db4-8598-a9dc091ff8d0/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 08:45:18,273 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:45:18,275 INFO L168 Benchmark]: Toolchain (without parser) took 2900.40 ms. Allocated memory was 100.7 MB in the beginning and 130.0 MB in the end (delta: 29.4 MB). Free memory was 68.6 MB in the beginning and 74.5 MB in the end (delta: -5.9 MB). Peak memory consumption was 25.3 MB. Max. memory is 16.1 GB. [2021-10-28 08:45:18,275 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 100.7 MB. Free memory is still 53.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:45:18,276 INFO L168 Benchmark]: CACSL2BoogieTranslator took 473.04 ms. Allocated memory is still 100.7 MB. Free memory was 68.3 MB in the beginning and 68.1 MB in the end (delta: 255.5 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 08:45:18,276 INFO L168 Benchmark]: Boogie Preprocessor took 61.72 ms. Allocated memory is still 100.7 MB. Free memory was 68.1 MB in the beginning and 65.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:45:18,277 INFO L168 Benchmark]: RCFGBuilder took 814.55 ms. Allocated memory was 100.7 MB in the beginning and 130.0 MB in the end (delta: 29.4 MB). Free memory was 65.5 MB in the beginning and 103.3 MB in the end (delta: -37.8 MB). Peak memory consumption was 26.6 MB. Max. memory is 16.1 GB. [2021-10-28 08:45:18,277 INFO L168 Benchmark]: TraceAbstraction took 1490.93 ms. Allocated memory is still 130.0 MB. Free memory was 102.7 MB in the beginning and 76.6 MB in the end (delta: 26.1 MB). Peak memory consumption was 26.6 MB. Max. memory is 16.1 GB. [2021-10-28 08:45:18,278 INFO L168 Benchmark]: Witness Printer took 53.67 ms. Allocated memory is still 130.0 MB. Free memory was 76.6 MB in the beginning and 74.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:45:18,280 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 100.7 MB. Free memory is still 53.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 473.04 ms. Allocated memory is still 100.7 MB. Free memory was 68.3 MB in the beginning and 68.1 MB in the end (delta: 255.5 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 61.72 ms. Allocated memory is still 100.7 MB. Free memory was 68.1 MB in the beginning and 65.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 814.55 ms. Allocated memory was 100.7 MB in the beginning and 130.0 MB in the end (delta: 29.4 MB). Free memory was 65.5 MB in the beginning and 103.3 MB in the end (delta: -37.8 MB). Peak memory consumption was 26.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1490.93 ms. Allocated memory is still 130.0 MB. Free memory was 102.7 MB in the beginning and 76.6 MB in the end (delta: 26.1 MB). Peak memory consumption was 26.6 MB. Max. memory is 16.1 GB. * Witness Printer took 53.67 ms. Allocated memory is still 130.0 MB. Free memory was 76.6 MB in the beginning and 74.5 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: - 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 - CounterExampleResult [Line: 551]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); [L533] COND FALSE !(a == 0) VAL [a={-1:0}] [L534] List t; [L535] List p = a; [L536] int i = 0; VAL [a={-1:0}, i=0, p={-1:0}] [L537] i < 30 && __VERIFIER_nondet_int() [L537] i < 30 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={-1:0}, i=0, i < 30 && __VERIFIER_nondet_int()=0, p={-1:0}] [L537] COND FALSE !(i < 30 && __VERIFIER_nondet_int()) [L545] p->h = i VAL [a={-1:0}, i=0, p={-1:0}] [L546] p->n = 0 VAL [a={-1:0}, i=0, p={-1:0}] [L547] p = a [L548] i = 0 VAL [a={-1:0}, i=0, p={-1:0}] [L549] COND TRUE p!=0 VAL [a={-1:0}, i=0, p={-1:0}] [L550] EXPR p->h VAL [a={-1:0}, i=0, p={-1:0}, p->h=0] [L550] COND TRUE p->h != 1 [L551] reach_error() VAL [a={-1:0}, i=0, p={-1:0}] - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 545]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 546]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 558]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 558]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 82 locations, 21 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 109 SDtfs, 195 SDslu, 49 SDs, 0 SdLazy, 287 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=3, InterpolantAutomatonStates: 14, 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, 3 MinimizatonAttempts, 26 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 175 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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! [2021-10-28 08:45:18,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49d8a226-5cec-4db4-8598-a9dc091ff8d0/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...