./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-properties/list_flag-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/list_flag-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU --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 4547628201bbb61f481f84914c46868091db8c6a3d0c4d8890951b495ae3c7da --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:06:42,064 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:06:42,067 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:06:42,098 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:06:42,099 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:06:42,100 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:06:42,102 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:06:42,104 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:06:42,106 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:06:42,107 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:06:42,109 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:06:42,110 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:06:42,110 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:06:42,112 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:06:42,113 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:06:42,115 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:06:42,116 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:06:42,117 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:06:42,119 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:06:42,122 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:06:42,124 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:06:42,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:06:42,127 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:06:42,128 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:06:42,132 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:06:42,132 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:06:42,133 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:06:42,134 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:06:42,134 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:06:42,135 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:06:42,136 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:06:42,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:06:42,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:06:42,139 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:06:42,140 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:06:42,140 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:06:42,143 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:06:42,143 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:06:42,144 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:06:42,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:06:42,146 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:06:42,147 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-02 22:06:42,183 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:06:42,184 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:06:42,184 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:06:42,185 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:06:42,187 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:06:42,187 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:06:42,187 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:06:42,187 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:06:42,188 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:06:42,188 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-02 22:06:42,189 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:06:42,189 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:06:42,189 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:06:42,190 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-02 22:06:42,190 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-02 22:06:42,190 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-02 22:06:42,191 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:06:42,191 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-02 22:06:42,191 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:06:42,191 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:06:42,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:06:42,192 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:06:42,192 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:06:42,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:06:42,193 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:06:42,193 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:06:42,193 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:06:42,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:06:42,194 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:06:42,195 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_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4547628201bbb61f481f84914c46868091db8c6a3d0c4d8890951b495ae3c7da [2021-11-02 22:06:42,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:06:42,471 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:06:42,473 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:06:42,474 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:06:42,475 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:06:42,476 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/list-properties/list_flag-2.i [2021-11-02 22:06:42,558 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/data/2faf0157a/e852ed9055764cddaa1be997925f4229/FLAGa8804a938 [2021-11-02 22:06:43,038 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:06:43,039 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/sv-benchmarks/c/list-properties/list_flag-2.i [2021-11-02 22:06:43,052 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/data/2faf0157a/e852ed9055764cddaa1be997925f4229/FLAGa8804a938 [2021-11-02 22:06:43,390 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/data/2faf0157a/e852ed9055764cddaa1be997925f4229 [2021-11-02 22:06:43,393 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:06:43,394 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-02 22:06:43,398 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:06:43,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:06:43,402 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:06:43,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:06:43" (1/1) ... [2021-11-02 22:06:43,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9bdf573 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:43, skipping insertion in model container [2021-11-02 22:06:43,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:06:43" (1/1) ... [2021-11-02 22:06:43,413 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:06:43,471 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:06:43,811 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_2b4d1155-e927-44dd-8293-e3a8ba8efb90/sv-benchmarks/c/list-properties/list_flag-2.i[23375,23388] [2021-11-02 22:06:43,817 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:06:43,830 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:06:43,894 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_2b4d1155-e927-44dd-8293-e3a8ba8efb90/sv-benchmarks/c/list-properties/list_flag-2.i[23375,23388] [2021-11-02 22:06:43,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:06:43,936 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:06:43,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:43 WrapperNode [2021-11-02 22:06:43,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:06:43,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:06:43,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:06:43,938 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:06:43,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:43" (1/1) ... [2021-11-02 22:06:43,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:43" (1/1) ... [2021-11-02 22:06:43,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:43" (1/1) ... [2021-11-02 22:06:43,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:43" (1/1) ... [2021-11-02 22:06:43,980 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:43" (1/1) ... [2021-11-02 22:06:43,996 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:43" (1/1) ... [2021-11-02 22:06:44,000 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:43" (1/1) ... [2021-11-02 22:06:44,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:06:44,007 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:06:44,007 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:06:44,007 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:06:44,021 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:43" (1/1) ... [2021-11-02 22:06:44,028 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:06:44,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:06:44,056 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:06:44,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:06:44,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-02 22:06:44,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:06:44,098 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-02 22:06:44,099 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-02 22:06:44,099 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-02 22:06:44,100 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-02 22:06:44,100 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-02 22:06:44,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-02 22:06:44,101 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-11-02 22:06:44,103 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-02 22:06:44,103 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-02 22:06:44,103 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-02 22:06:44,103 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-02 22:06:44,104 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-02 22:06:44,104 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-02 22:06:44,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:06:44,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-11-02 22:06:44,104 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-02 22:06:44,104 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-02 22:06:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-02 22:06:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-02 22:06:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-02 22:06:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-02 22:06:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-02 22:06:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-02 22:06:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-02 22:06:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-02 22:06:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-02 22:06:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-02 22:06:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-02 22:06:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-02 22:06:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-02 22:06:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-02 22:06:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-02 22:06:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-02 22:06:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-02 22:06:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-02 22:06:44,108 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-02 22:06:44,108 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-02 22:06:44,108 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-02 22:06:44,108 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-02 22:06:44,108 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-02 22:06:44,108 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-02 22:06:44,109 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-02 22:06:44,109 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-02 22:06:44,109 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-02 22:06:44,109 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-02 22:06:44,110 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-02 22:06:44,110 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-02 22:06:44,111 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-02 22:06:44,111 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-02 22:06:44,111 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-02 22:06:44,111 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-02 22:06:44,111 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-02 22:06:44,112 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-02 22:06:44,112 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-02 22:06:44,112 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-02 22:06:44,112 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-02 22:06:44,112 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-02 22:06:44,112 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-02 22:06:44,113 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-02 22:06:44,113 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-02 22:06:44,113 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-02 22:06:44,113 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-02 22:06:44,113 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-02 22:06:44,114 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-02 22:06:44,115 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-02 22:06:44,115 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-02 22:06:44,116 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-02 22:06:44,116 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-02 22:06:44,116 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-02 22:06:44,116 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-02 22:06:44,116 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-02 22:06:44,117 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-02 22:06:44,117 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-02 22:06:44,117 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-02 22:06:44,117 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-02 22:06:44,117 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-02 22:06:44,117 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-02 22:06:44,118 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-02 22:06:44,118 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-02 22:06:44,118 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-02 22:06:44,119 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-02 22:06:44,119 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-02 22:06:44,119 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-02 22:06:44,119 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-02 22:06:44,119 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-02 22:06:44,119 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-02 22:06:44,120 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-02 22:06:44,120 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-02 22:06:44,120 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-02 22:06:44,120 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-02 22:06:44,120 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-02 22:06:44,120 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-02 22:06:44,121 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-02 22:06:44,121 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-02 22:06:44,121 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-02 22:06:44,121 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-02 22:06:44,121 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-02 22:06:44,121 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-02 22:06:44,121 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-02 22:06:44,122 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-02 22:06:44,122 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-02 22:06:44,122 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-02 22:06:44,122 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-02 22:06:44,123 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-02 22:06:44,123 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-02 22:06:44,123 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-02 22:06:44,123 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-02 22:06:44,123 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-02 22:06:44,123 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-02 22:06:44,124 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-02 22:06:44,124 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-02 22:06:44,124 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-02 22:06:44,124 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-02 22:06:44,124 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-02 22:06:44,124 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-02 22:06:44,124 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-02 22:06:44,125 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-02 22:06:44,125 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-02 22:06:44,125 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-02 22:06:44,125 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-02 22:06:44,125 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-02 22:06:44,126 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-11-02 22:06:44,126 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-02 22:06:44,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 22:06:44,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 22:06:44,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 22:06:44,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 22:06:44,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 22:06:44,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-02 22:06:44,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:06:44,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:06:44,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 22:06:44,465 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-11-02 22:06:44,748 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:06:44,751 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-02 22:06:44,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:06:44 BoogieIcfgContainer [2021-11-02 22:06:44,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:06:44,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:06:44,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:06:44,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:06:44,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:06:43" (1/3) ... [2021-11-02 22:06:44,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d2eb47f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:06:44, skipping insertion in model container [2021-11-02 22:06:44,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:43" (2/3) ... [2021-11-02 22:06:44,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d2eb47f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:06:44, skipping insertion in model container [2021-11-02 22:06:44,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:06:44" (3/3) ... [2021-11-02 22:06:44,762 INFO L111 eAbstractionObserver]: Analyzing ICFG list_flag-2.i [2021-11-02 22:06:44,767 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:06:44,767 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2021-11-02 22:06:44,812 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:06:44,818 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 22:06:44,818 INFO L340 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2021-11-02 22:06:44,833 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 33 states have (on average 2.0) internal successors, (66), 56 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) [2021-11-02 22:06:44,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-02 22:06:44,840 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:06:44,841 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:06:44,841 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-11-02 22:06:44,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:06:44,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1866589301, now seen corresponding path program 1 times [2021-11-02 22:06:44,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:06:44,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53177556] [2021-11-02 22:06:44,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:06:44,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:06:44,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:06:45,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-02 22:06:45,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:06:45,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:06:45,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:06:45,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53177556] [2021-11-02 22:06:45,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53177556] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:06:45,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:06:45,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:06:45,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835110371] [2021-11-02 22:06:45,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:06:45,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:06:45,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:06:45,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:06:45,066 INFO L87 Difference]: Start difference. First operand has 62 states, 33 states have (on average 2.0) internal successors, (66), 56 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) [2021-11-02 22:06:45,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:06:45,189 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2021-11-02 22:06:45,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:06:45,190 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 [2021-11-02 22:06:45,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:06:45,197 INFO L225 Difference]: With dead ends: 62 [2021-11-02 22:06:45,197 INFO L226 Difference]: Without dead ends: 55 [2021-11-02 22:06:45,198 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 [2021-11-02 22:06:45,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-11-02 22:06:45,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-11-02 22:06:45,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 51 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) [2021-11-02 22:06:45,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2021-11-02 22:06:45,232 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 10 [2021-11-02 22:06:45,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:06:45,232 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2021-11-02 22:06:45,232 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) [2021-11-02 22:06:45,233 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2021-11-02 22:06:45,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-02 22:06:45,233 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:06:45,233 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:06:45,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:06:45,234 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-11-02 22:06:45,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:06:45,235 INFO L85 PathProgramCache]: Analyzing trace with hash -2029727141, now seen corresponding path program 1 times [2021-11-02 22:06:45,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:06:45,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126597550] [2021-11-02 22:06:45,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:06:45,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:06:45,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:06:45,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-02 22:06:45,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:06:45,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:06:45,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:06:45,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126597550] [2021-11-02 22:06:45,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126597550] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:06:45,375 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:06:45,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:06:45,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754999374] [2021-11-02 22:06:45,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:06:45,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:06:45,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:06:45,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:06:45,382 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-11-02 22:06:45,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:06:45,549 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2021-11-02 22:06:45,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:06:45,549 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 11 [2021-11-02 22:06:45,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:06:45,553 INFO L225 Difference]: With dead ends: 63 [2021-11-02 22:06:45,553 INFO L226 Difference]: Without dead ends: 63 [2021-11-02 22:06:45,554 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 [2021-11-02 22:06:45,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-11-02 22:06:45,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 58. [2021-11-02 22:06:45,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 38 states have (on average 1.736842105263158) internal successors, (66), 54 states have internal predecessors, (66), 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) [2021-11-02 22:06:45,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2021-11-02 22:06:45,568 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 11 [2021-11-02 22:06:45,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:06:45,569 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2021-11-02 22:06:45,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-11-02 22:06:45,569 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2021-11-02 22:06:45,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-02 22:06:45,569 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:06:45,570 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:06:45,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 22:06:45,570 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-11-02 22:06:45,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:06:45,571 INFO L85 PathProgramCache]: Analyzing trace with hash -2029727140, now seen corresponding path program 1 times [2021-11-02 22:06:45,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:06:45,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259319193] [2021-11-02 22:06:45,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:06:45,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:06:45,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:06:45,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-02 22:06:45,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:06:45,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:06:45,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:06:45,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259319193] [2021-11-02 22:06:45,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259319193] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:06:45,744 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:06:45,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:06:45,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783831483] [2021-11-02 22:06:45,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:06:45,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:06:45,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:06:45,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:06:45,746 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-11-02 22:06:45,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:06:45,904 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2021-11-02 22:06:45,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:06:45,905 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 11 [2021-11-02 22:06:45,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:06:45,908 INFO L225 Difference]: With dead ends: 76 [2021-11-02 22:06:45,908 INFO L226 Difference]: Without dead ends: 76 [2021-11-02 22:06:45,909 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 [2021-11-02 22:06:45,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-11-02 22:06:45,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 67. [2021-11-02 22:06:45,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 47 states have (on average 1.5319148936170213) internal successors, (72), 63 states have internal predecessors, (72), 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) [2021-11-02 22:06:45,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2021-11-02 22:06:45,921 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 11 [2021-11-02 22:06:45,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:06:45,922 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2021-11-02 22:06:45,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-11-02 22:06:45,922 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2021-11-02 22:06:45,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-02 22:06:45,923 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:06:45,923 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:06:45,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 22:06:45,924 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr20ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-11-02 22:06:45,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:06:45,925 INFO L85 PathProgramCache]: Analyzing trace with hash 315085343, now seen corresponding path program 1 times [2021-11-02 22:06:45,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:06:45,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651465080] [2021-11-02 22:06:45,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:06:45,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:06:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:06:46,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-02 22:06:46,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:06:46,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:06:46,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:06:46,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651465080] [2021-11-02 22:06:46,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651465080] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:06:46,078 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:06:46,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 22:06:46,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623910266] [2021-11-02 22:06:46,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 22:06:46,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:06:46,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 22:06:46,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:06:46,081 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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) [2021-11-02 22:06:46,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:06:46,297 INFO L93 Difference]: Finished difference Result 110 states and 120 transitions. [2021-11-02 22:06:46,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 22:06:46,298 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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 18 [2021-11-02 22:06:46,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:06:46,303 INFO L225 Difference]: With dead ends: 110 [2021-11-02 22:06:46,303 INFO L226 Difference]: Without dead ends: 110 [2021-11-02 22:06:46,304 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-02 22:06:46,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-11-02 22:06:46,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 75. [2021-11-02 22:06:46,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 55 states have (on average 1.509090909090909) internal successors, (83), 71 states have internal predecessors, (83), 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) [2021-11-02 22:06:46,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 86 transitions. [2021-11-02 22:06:46,320 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 86 transitions. Word has length 18 [2021-11-02 22:06:46,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:06:46,321 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 86 transitions. [2021-11-02 22:06:46,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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) [2021-11-02 22:06:46,321 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 86 transitions. [2021-11-02 22:06:46,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-02 22:06:46,322 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:06:46,322 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:06:46,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 22:06:46,326 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr21ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-11-02 22:06:46,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:06:46,326 INFO L85 PathProgramCache]: Analyzing trace with hash 315085504, now seen corresponding path program 1 times [2021-11-02 22:06:46,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:06:46,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778923782] [2021-11-02 22:06:46,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:06:46,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:06:46,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:06:46,344 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:06:46,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:06:46,400 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:06:46,400 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-02 22:06:46,401 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr21ENSURES_VIOLATIONMEMORY_LEAK [2021-11-02 22:06:46,403 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-11-02 22:06:46,403 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-11-02 22:06:46,404 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-11-02 22:06:46,404 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-11-02 22:06:46,404 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-11-02 22:06:46,404 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-11-02 22:06:46,404 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-11-02 22:06:46,405 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-11-02 22:06:46,405 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-11-02 22:06:46,405 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-11-02 22:06:46,406 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-11-02 22:06:46,406 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-11-02 22:06:46,406 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-11-02 22:06:46,413 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-11-02 22:06:46,414 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-11-02 22:06:46,414 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-11-02 22:06:46,414 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-11-02 22:06:46,414 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-11-02 22:06:46,414 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-11-02 22:06:46,414 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-11-02 22:06:46,415 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20ASSERT_VIOLATIONMEMORY_LEAK [2021-11-02 22:06:46,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 22:06:46,418 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-11-02 22:06:46,421 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-02 22:06:46,428 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-11-02 22:06:46,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 10:06:46 BoogieIcfgContainer [2021-11-02 22:06:46,448 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-02 22:06:46,449 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-02 22:06:46,449 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-02 22:06:46,449 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-02 22:06:46,450 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:06:44" (3/4) ... [2021-11-02 22:06:46,453 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-02 22:06:46,453 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-02 22:06:46,455 INFO L168 Benchmark]: Toolchain (without parser) took 3059.53 ms. Allocated memory was 94.4 MB in the beginning and 119.5 MB in the end (delta: 25.2 MB). Free memory was 59.0 MB in the beginning and 91.4 MB in the end (delta: -32.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:06:46,455 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 94.4 MB. Free memory is still 49.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:06:46,457 INFO L168 Benchmark]: CACSL2BoogieTranslator took 538.88 ms. Allocated memory is still 94.4 MB. Free memory was 58.8 MB in the beginning and 60.3 MB in the end (delta: -1.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-02 22:06:46,457 INFO L168 Benchmark]: Boogie Preprocessor took 68.90 ms. Allocated memory is still 94.4 MB. Free memory was 60.3 MB in the beginning and 57.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 22:06:46,458 INFO L168 Benchmark]: RCFGBuilder took 747.55 ms. Allocated memory was 94.4 MB in the beginning and 119.5 MB in the end (delta: 25.2 MB). Free memory was 57.5 MB in the beginning and 88.9 MB in the end (delta: -31.4 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.1 GB. [2021-11-02 22:06:46,458 INFO L168 Benchmark]: TraceAbstraction took 1692.53 ms. Allocated memory is still 119.5 MB. Free memory was 88.4 MB in the beginning and 92.5 MB in the end (delta: -4.1 MB). Peak memory consumption was 49.6 MB. Max. memory is 16.1 GB. [2021-11-02 22:06:46,459 INFO L168 Benchmark]: Witness Printer took 4.07 ms. Allocated memory is still 119.5 MB. Free memory was 92.5 MB in the beginning and 91.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 22:06:46,461 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 94.4 MB. Free memory is still 49.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 538.88 ms. Allocated memory is still 94.4 MB. Free memory was 58.8 MB in the beginning and 60.3 MB in the end (delta: -1.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 68.90 ms. Allocated memory is still 94.4 MB. Free memory was 60.3 MB in the beginning and 57.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 747.55 ms. Allocated memory was 94.4 MB in the beginning and 119.5 MB in the end (delta: 25.2 MB). Free memory was 57.5 MB in the beginning and 88.9 MB in the end (delta: -31.4 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1692.53 ms. Allocated memory is still 119.5 MB. Free memory was 88.4 MB in the beginning and 92.5 MB in the end (delta: -4.1 MB). Peak memory consumption was 49.6 MB. Max. memory is 16.1 GB. * Witness Printer took 4.07 ms. Allocated memory is still 119.5 MB. Free memory was 92.5 MB in the beginning and 91.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * 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 - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] int flag = __VERIFIER_nondet_int(); [L533] List p, a, t; [L534] a = (List) malloc(sizeof(struct node)) [L535] COND FALSE !(a == 0) VAL [a={-1:0}, flag=0] [L536] p = a VAL [a={-1:0}, flag=0, p={-1:0}] [L537] COND FALSE !(__VERIFIER_nondet_int()) [L548] p->h = 3 VAL [a={-1:0}, flag=0, p={-1:0}] [L549] p = a VAL [a={-1:0}, flag=0, p={-1:0}] [L550] COND FALSE !(\read(flag)) VAL [a={-1:0}, flag=0, p={-1:0}] [L554] EXPR p->h VAL [a={-1:0}, flag=0, p={-1:0}, p->h=3] [L554] COND FALSE !(p->h == 2) [L556] EXPR p->h VAL [a={-1:0}, flag=0, p={-1:0}, p->h=3] [L556] COND FALSE !(p->h != 3) - UnprovableResult [Line: 539]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 539]: 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: 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: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: 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, 81 locations, 22 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 158 SDtfs, 275 SDslu, 173 SDs, 0 SdLazy, 433 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=4, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 49 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 252 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 could not prove your program: unable to determine feasibility of some traces [2021-11-02 22:06:46,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/list_flag-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU --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 4547628201bbb61f481f84914c46868091db8c6a3d0c4d8890951b495ae3c7da --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:06:48,891 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:06:48,893 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:06:48,928 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:06:48,929 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:06:48,931 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:06:48,934 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:06:48,939 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:06:48,943 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:06:48,944 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:06:48,946 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:06:48,949 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:06:48,950 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:06:48,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:06:48,957 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:06:48,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:06:48,960 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:06:48,961 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:06:48,963 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:06:48,965 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:06:48,967 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:06:48,968 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:06:48,970 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:06:48,971 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:06:48,975 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:06:48,975 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:06:48,976 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:06:48,977 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:06:48,978 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:06:48,979 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:06:48,979 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:06:48,980 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:06:48,981 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:06:48,982 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:06:48,983 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:06:48,983 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:06:48,984 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:06:48,988 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:06:48,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:06:48,989 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:06:48,990 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:06:48,992 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-02 22:06:49,019 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:06:49,020 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:06:49,020 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:06:49,020 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:06:49,022 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:06:49,022 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:06:49,022 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:06:49,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:06:49,023 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:06:49,023 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-02 22:06:49,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:06:49,023 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:06:49,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:06:49,024 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-02 22:06:49,024 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-02 22:06:49,024 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-02 22:06:49,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:06:49,025 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-02 22:06:49,025 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-02 22:06:49,025 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-02 22:06:49,025 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:06:49,025 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:06:49,026 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:06:49,026 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:06:49,026 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:06:49,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:06:49,027 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:06:49,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:06:49,027 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-02 22:06:49,027 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-02 22:06:49,028 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:06:49,028 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-02 22:06:49,028 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4547628201bbb61f481f84914c46868091db8c6a3d0c4d8890951b495ae3c7da [2021-11-02 22:06:49,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:06:49,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:06:49,412 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:06:49,413 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:06:49,414 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:06:49,415 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/list-properties/list_flag-2.i [2021-11-02 22:06:49,471 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/data/e156d9995/7baca368bfdc4789864464dee5da8cad/FLAGdb7b005d1 [2021-11-02 22:06:49,989 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:06:49,989 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/sv-benchmarks/c/list-properties/list_flag-2.i [2021-11-02 22:06:50,003 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/data/e156d9995/7baca368bfdc4789864464dee5da8cad/FLAGdb7b005d1 [2021-11-02 22:06:50,291 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/data/e156d9995/7baca368bfdc4789864464dee5da8cad [2021-11-02 22:06:50,293 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:06:50,294 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-02 22:06:50,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:06:50,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:06:50,302 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:06:50,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:06:50" (1/1) ... [2021-11-02 22:06:50,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6afe34fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:50, skipping insertion in model container [2021-11-02 22:06:50,307 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:06:50" (1/1) ... [2021-11-02 22:06:50,317 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:06:50,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:06:50,681 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_2b4d1155-e927-44dd-8293-e3a8ba8efb90/sv-benchmarks/c/list-properties/list_flag-2.i[23375,23388] [2021-11-02 22:06:50,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:06:50,695 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:06:50,729 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_2b4d1155-e927-44dd-8293-e3a8ba8efb90/sv-benchmarks/c/list-properties/list_flag-2.i[23375,23388] [2021-11-02 22:06:50,736 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:06:50,779 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:06:50,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:50 WrapperNode [2021-11-02 22:06:50,780 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:06:50,781 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:06:50,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:06:50,781 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:06:50,793 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:50" (1/1) ... [2021-11-02 22:06:50,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:50" (1/1) ... [2021-11-02 22:06:50,835 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:50" (1/1) ... [2021-11-02 22:06:50,835 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:50" (1/1) ... [2021-11-02 22:06:50,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:50" (1/1) ... [2021-11-02 22:06:50,874 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:50" (1/1) ... [2021-11-02 22:06:50,883 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:50" (1/1) ... [2021-11-02 22:06:50,905 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:06:50,906 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:06:50,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:06:50,906 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:06:50,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:50" (1/1) ... [2021-11-02 22:06:50,915 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:06:50,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:06:50,946 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:06:50,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:06:50,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-02 22:06:50,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:06:50,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-02 22:06:50,996 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-02 22:06:50,996 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-02 22:06:50,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-02 22:06:50,999 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-02 22:06:50,999 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-02 22:06:50,999 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-02 22:06:50,999 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-11-02 22:06:51,000 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-02 22:06:51,000 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-02 22:06:51,000 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-02 22:06:51,000 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-02 22:06:51,000 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-02 22:06:51,001 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-02 22:06:51,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:06:51,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-11-02 22:06:51,001 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-02 22:06:51,001 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-02 22:06:51,002 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-02 22:06:51,002 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-02 22:06:51,002 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-02 22:06:51,002 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-02 22:06:51,002 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-02 22:06:51,003 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-02 22:06:51,003 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-02 22:06:51,003 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-02 22:06:51,003 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-02 22:06:51,004 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-02 22:06:51,004 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-02 22:06:51,004 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-02 22:06:51,004 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-02 22:06:51,004 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-02 22:06:51,004 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-02 22:06:51,005 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-02 22:06:51,005 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-02 22:06:51,005 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-02 22:06:51,005 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-02 22:06:51,005 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-02 22:06:51,006 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-02 22:06:51,006 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-02 22:06:51,006 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-02 22:06:51,006 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-02 22:06:51,007 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-02 22:06:51,007 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-02 22:06:51,008 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-02 22:06:51,009 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-02 22:06:51,009 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-02 22:06:51,009 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-02 22:06:51,009 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-02 22:06:51,009 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-02 22:06:51,010 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-02 22:06:51,010 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-02 22:06:51,010 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-02 22:06:51,010 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-02 22:06:51,010 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-02 22:06:51,011 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-02 22:06:51,011 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-02 22:06:51,012 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-02 22:06:51,012 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-02 22:06:51,012 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-02 22:06:51,013 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-02 22:06:51,014 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-02 22:06:51,014 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-02 22:06:51,015 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-02 22:06:51,015 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-02 22:06:51,015 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-02 22:06:51,015 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-02 22:06:51,015 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-02 22:06:51,016 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-02 22:06:51,016 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-02 22:06:51,016 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-02 22:06:51,016 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-02 22:06:51,016 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-02 22:06:51,017 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-02 22:06:51,017 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-02 22:06:51,017 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-02 22:06:51,017 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-02 22:06:51,018 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-02 22:06:51,018 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-02 22:06:51,019 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-02 22:06:51,019 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-02 22:06:51,019 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-02 22:06:51,019 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-02 22:06:51,019 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-02 22:06:51,020 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-02 22:06:51,020 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-02 22:06:51,020 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-02 22:06:51,020 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-02 22:06:51,020 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-02 22:06:51,021 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-02 22:06:51,021 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-02 22:06:51,021 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-02 22:06:51,021 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-02 22:06:51,021 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-02 22:06:51,021 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-02 22:06:51,022 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-02 22:06:51,022 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-02 22:06:51,022 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-02 22:06:51,022 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-02 22:06:51,023 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-02 22:06:51,023 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-02 22:06:51,023 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-02 22:06:51,023 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-02 22:06:51,023 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-02 22:06:51,024 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-02 22:06:51,024 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-02 22:06:51,024 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-02 22:06:51,024 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-02 22:06:51,024 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-02 22:06:51,025 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-02 22:06:51,025 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-02 22:06:51,025 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-02 22:06:51,025 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-02 22:06:51,026 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-02 22:06:51,026 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-02 22:06:51,026 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-02 22:06:51,026 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-02 22:06:51,026 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-02 22:06:51,027 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-02 22:06:51,027 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-02 22:06:51,027 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-02 22:06:51,028 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-02 22:06:51,029 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-11-02 22:06:51,031 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-02 22:06:51,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 22:06:51,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-02 22:06:51,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 22:06:51,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 22:06:51,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-02 22:06:51,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-02 22:06:51,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-02 22:06:51,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:06:51,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-02 22:06:51,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-02 22:06:51,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-02 22:06:51,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 22:06:51,516 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-11-02 22:06:51,838 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:06:51,838 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-02 22:06:51,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:06:51 BoogieIcfgContainer [2021-11-02 22:06:51,841 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:06:51,843 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:06:51,843 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:06:51,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:06:51,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:06:50" (1/3) ... [2021-11-02 22:06:51,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7129b766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:06:51, skipping insertion in model container [2021-11-02 22:06:51,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:06:50" (2/3) ... [2021-11-02 22:06:51,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7129b766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:06:51, skipping insertion in model container [2021-11-02 22:06:51,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:06:51" (3/3) ... [2021-11-02 22:06:51,849 INFO L111 eAbstractionObserver]: Analyzing ICFG list_flag-2.i [2021-11-02 22:06:51,854 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:06:51,854 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2021-11-02 22:06:51,899 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:06:51,905 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-02 22:06:51,905 INFO L340 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2021-11-02 22:06:51,919 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 32 states have (on average 2.03125) internal successors, (65), 55 states have internal predecessors, (65), 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) [2021-11-02 22:06:51,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-02 22:06:51,927 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:06:51,928 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:06:51,928 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-11-02 22:06:51,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:06:51,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1040661460, now seen corresponding path program 1 times [2021-11-02 22:06:51,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:06:51,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1274283463] [2021-11-02 22:06:51,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:06:51,946 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:06:51,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:06:51,949 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:06:51,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-02 22:06:52,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:06:52,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-02 22:06:52,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:06:52,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:06:52,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:06:52,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:06:52,275 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:06:52,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1274283463] [2021-11-02 22:06:52,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1274283463] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:06:52,276 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:06:52,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-02 22:06:52,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284893138] [2021-11-02 22:06:52,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 22:06:52,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:06:52,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 22:06:52,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 22:06:52,307 INFO L87 Difference]: Start difference. First operand has 61 states, 32 states have (on average 2.03125) internal successors, (65), 55 states have internal predecessors, (65), 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 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:06:52,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:06:52,326 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2021-11-02 22:06:52,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 22:06:52,327 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 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 [2021-11-02 22:06:52,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:06:52,334 INFO L225 Difference]: With dead ends: 61 [2021-11-02 22:06:52,335 INFO L226 Difference]: Without dead ends: 54 [2021-11-02 22:06:52,336 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 22:06:52,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-11-02 22:06:52,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-11-02 22:06:52,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 29 states have (on average 1.896551724137931) internal successors, (55), 50 states have internal predecessors, (55), 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) [2021-11-02 22:06:52,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2021-11-02 22:06:52,382 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 10 [2021-11-02 22:06:52,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:06:52,382 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2021-11-02 22:06:52,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:06:52,383 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2021-11-02 22:06:52,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-02 22:06:52,385 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:06:52,385 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:06:52,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-02 22:06:52,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:06:52,597 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-11-02 22:06:52,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:06:52,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1040662421, now seen corresponding path program 1 times [2021-11-02 22:06:52,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:06:52,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [77596241] [2021-11-02 22:06:52,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:06:52,599 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:06:52,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:06:52,600 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:06:52,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-02 22:06:52,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:06:52,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:06:52,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:06:52,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-02 22:06:52,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:06:52,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:06:52,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:06:52,946 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:06:52,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [77596241] [2021-11-02 22:06:52,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [77596241] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:06:52,947 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:06:52,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-02 22:06:52,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101235151] [2021-11-02 22:06:52,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:06:52,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:06:52,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:06:52,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:06:52,954 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:06:53,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:06:53,195 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2021-11-02 22:06:53,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:06:53,196 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 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 [2021-11-02 22:06:53,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:06:53,198 INFO L225 Difference]: With dead ends: 61 [2021-11-02 22:06:53,199 INFO L226 Difference]: Without dead ends: 61 [2021-11-02 22:06:53,199 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:06:53,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-11-02 22:06:53,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 56. [2021-11-02 22:06:53,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 36 states have (on average 1.7777777777777777) internal successors, (64), 52 states have internal predecessors, (64), 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) [2021-11-02 22:06:53,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2021-11-02 22:06:53,210 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 10 [2021-11-02 22:06:53,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:06:53,215 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2021-11-02 22:06:53,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:06:53,215 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2021-11-02 22:06:53,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-02 22:06:53,216 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:06:53,216 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:06:53,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-02 22:06:53,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:06:53,431 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-11-02 22:06:53,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:06:53,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1040662420, now seen corresponding path program 1 times [2021-11-02 22:06:53,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:06:53,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1256405443] [2021-11-02 22:06:53,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:06:53,433 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:06:53,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:06:53,435 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:06:53,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-02 22:06:53,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:06:53,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 22:06:53,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:06:53,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-02 22:06:53,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:06:53,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:06:53,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:06:53,875 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:06:53,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1256405443] [2021-11-02 22:06:53,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1256405443] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:06:53,876 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:06:53,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-02 22:06:53,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269111739] [2021-11-02 22:06:53,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:06:53,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:06:53,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:06:53,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:06:53,885 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:06:54,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:06:54,263 INFO L93 Difference]: Finished difference Result 73 states and 80 transitions. [2021-11-02 22:06:54,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:06:54,264 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 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 [2021-11-02 22:06:54,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:06:54,266 INFO L225 Difference]: With dead ends: 73 [2021-11-02 22:06:54,266 INFO L226 Difference]: Without dead ends: 73 [2021-11-02 22:06:54,266 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:06:54,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-11-02 22:06:54,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 63. [2021-11-02 22:06:54,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 44 states have (on average 1.5454545454545454) internal successors, (68), 59 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) [2021-11-02 22:06:54,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2021-11-02 22:06:54,273 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 10 [2021-11-02 22:06:54,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:06:54,273 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2021-11-02 22:06:54,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:06:54,273 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2021-11-02 22:06:54,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-02 22:06:54,274 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:06:54,274 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:06:54,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-02 22:06:54,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:06:54,475 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr21ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 17 more)] === [2021-11-02 22:06:54,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:06:54,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1562517626, now seen corresponding path program 1 times [2021-11-02 22:06:54,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:06:54,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1398620571] [2021-11-02 22:06:54,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:06:54,477 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:06:54,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:06:54,478 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:06:54,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-02 22:06:54,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:06:54,625 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:06:54,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:06:54,727 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-02 22:06:54,727 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-02 22:06:54,728 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr21ENSURES_VIOLATIONMEMORY_LEAK [2021-11-02 22:06:54,729 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-11-02 22:06:54,730 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-11-02 22:06:54,730 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-11-02 22:06:54,730 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-11-02 22:06:54,730 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-11-02 22:06:54,730 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-11-02 22:06:54,730 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-11-02 22:06:54,731 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-11-02 22:06:54,731 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-11-02 22:06:54,731 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-11-02 22:06:54,731 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-11-02 22:06:54,731 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-11-02 22:06:54,731 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-11-02 22:06:54,732 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-11-02 22:06:54,732 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-11-02 22:06:54,732 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-11-02 22:06:54,732 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-11-02 22:06:54,732 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-11-02 22:06:54,732 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-11-02 22:06:54,733 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-11-02 22:06:54,733 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20ASSERT_VIOLATIONMEMORY_LEAK [2021-11-02 22:06:54,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-02 22:06:54,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:06:54,956 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-11-02 22:06:54,958 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-02 22:06:54,964 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-11-02 22:06:54,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 10:06:54 BoogieIcfgContainer [2021-11-02 22:06:54,974 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-02 22:06:54,975 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-02 22:06:54,975 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-02 22:06:54,975 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-02 22:06:54,976 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:06:51" (3/4) ... [2021-11-02 22:06:54,979 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-02 22:06:54,980 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-02 22:06:54,982 INFO L168 Benchmark]: Toolchain (without parser) took 4686.06 ms. Allocated memory was 62.9 MB in the beginning and 83.9 MB in the end (delta: 21.0 MB). Free memory was 42.3 MB in the beginning and 46.4 MB in the end (delta: -4.2 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. [2021-11-02 22:06:54,983 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 62.9 MB. Free memory is still 44.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:06:54,983 INFO L168 Benchmark]: CACSL2BoogieTranslator took 484.72 ms. Allocated memory is still 62.9 MB. Free memory was 42.1 MB in the beginning and 39.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-02 22:06:54,986 INFO L168 Benchmark]: Boogie Preprocessor took 123.87 ms. Allocated memory is still 62.9 MB. Free memory was 39.7 MB in the beginning and 36.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-02 22:06:54,987 INFO L168 Benchmark]: RCFGBuilder took 935.25 ms. Allocated memory was 62.9 MB in the beginning and 83.9 MB in the end (delta: 21.0 MB). Free memory was 36.7 MB in the beginning and 51.1 MB in the end (delta: -14.4 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. [2021-11-02 22:06:54,987 INFO L168 Benchmark]: TraceAbstraction took 3131.80 ms. Allocated memory is still 83.9 MB. Free memory was 50.3 MB in the beginning and 47.0 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-02 22:06:54,987 INFO L168 Benchmark]: Witness Printer took 5.16 ms. Allocated memory is still 83.9 MB. Free memory was 47.0 MB in the beginning and 46.4 MB in the end (delta: 592.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:06:54,990 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 62.9 MB. Free memory is still 44.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 484.72 ms. Allocated memory is still 62.9 MB. Free memory was 42.1 MB in the beginning and 39.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 123.87 ms. Allocated memory is still 62.9 MB. Free memory was 39.7 MB in the beginning and 36.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 935.25 ms. Allocated memory was 62.9 MB in the beginning and 83.9 MB in the end (delta: 21.0 MB). Free memory was 36.7 MB in the beginning and 51.1 MB in the end (delta: -14.4 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3131.80 ms. Allocated memory is still 83.9 MB. Free memory was 50.3 MB in the beginning and 47.0 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Witness Printer took 5.16 ms. Allocated memory is still 83.9 MB. Free memory was 47.0 MB in the beginning and 46.4 MB in the end (delta: 592.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * 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 - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] int flag = __VERIFIER_nondet_int(); [L533] List p, a, t; [L534] a = (List) malloc(sizeof(struct node)) [L535] COND FALSE !(a == 0) VAL [a={1:0}, flag=2147483648] [L536] p = a VAL [a={1:0}, flag=2147483648, p={1:0}] [L537] COND FALSE !(__VERIFIER_nondet_int()) [L548] p->h = 3 VAL [a={1:0}, flag=2147483648, p={1:0}] [L549] p = a VAL [a={1:0}, flag=2147483648, p={1:0}] [L550] COND TRUE \read(flag) VAL [a={1:0}, flag=2147483648, p={1:0}] [L551] EXPR p->h VAL [a={1:0}, flag=2147483648, p={1:0}, p->h=3] [L551] COND FALSE !(p->h == 1) [L556] EXPR p->h VAL [a={1:0}, flag=2147483648, p={1:0}, p->h=3] [L556] COND FALSE !(p->h != 3) - UnprovableResult [Line: 539]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 539]: 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: 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: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 556]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: 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 11 procedures, 86 locations, 22 error locations. Started 1 CEGAR loops. OverallTime: 3.0s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 119 SDtfs, 222 SDslu, 37 SDs, 0 SdLazy, 103 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=3, InterpolantAutomatonStates: 11, 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, 15 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 206 SizeOfPredicates, 3 NumberOfNonLiveVariables, 186 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 could not prove your program: unable to determine feasibility of some traces [2021-11-02 22:06:55,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b4d1155-e927-44dd-8293-e3a8ba8efb90/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample