./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/cmp-freed-ptr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95178ba9-5fc0-4419-8b11-4f279fb651df/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95178ba9-5fc0-4419-8b11-4f279fb651df/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95178ba9-5fc0-4419-8b11-4f279fb651df/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95178ba9-5fc0-4419-8b11-4f279fb651df/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/cmp-freed-ptr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95178ba9-5fc0-4419-8b11-4f279fb651df/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95178ba9-5fc0-4419-8b11-4f279fb651df/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-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 63302b5441ba85cd38f4ed3669bf40852137e8be39297cc19159731ba051a536 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-free) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:05:13,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:05:13,943 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:05:13,984 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:05:13,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:05:13,986 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:05:13,988 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:05:13,992 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:05:13,995 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:05:13,996 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:05:13,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:05:13,999 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:05:14,000 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:05:14,002 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:05:14,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:05:14,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:05:14,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:05:14,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:05:14,012 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:05:14,015 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:05:14,017 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:05:14,023 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:05:14,025 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:05:14,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:05:14,032 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:05:14,032 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:05:14,033 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:05:14,034 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:05:14,051 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:05:14,053 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:05:14,053 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:05:14,055 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:05:14,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:05:14,057 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:05:14,059 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:05:14,059 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:05:14,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:05:14,061 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:05:14,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:05:14,066 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:05:14,068 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:05:14,069 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95178ba9-5fc0-4419-8b11-4f279fb651df/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 09:05:14,131 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:05:14,131 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:05:14,132 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:05:14,132 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:05:14,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:05:14,134 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:05:14,134 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:05:14,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:05:14,135 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:05:14,135 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:05:14,136 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:05:14,136 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:05:14,136 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:05:14,136 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 09:05:14,137 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 09:05:14,137 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 09:05:14,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:05:14,138 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 09:05:14,138 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:05:14,138 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:05:14,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:05:14,139 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:05:14,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:05:14,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:05:14,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:05:14,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:05:14,141 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:05:14,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:05:14,141 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:05:14,141 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_95178ba9-5fc0-4419-8b11-4f279fb651df/bin/uautomizer-UnR33cPsHg/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95178ba9-5fc0-4419-8b11-4f279fb651df/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63302b5441ba85cd38f4ed3669bf40852137e8be39297cc19159731ba051a536 [2021-10-28 09:05:14,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:05:14,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:05:14,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:05:14,508 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:05:14,510 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:05:14,511 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95178ba9-5fc0-4419-8b11-4f279fb651df/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/memsafety/cmp-freed-ptr.i [2021-10-28 09:05:14,623 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95178ba9-5fc0-4419-8b11-4f279fb651df/bin/uautomizer-UnR33cPsHg/data/db516a47b/080fa5ef3088483b8ce3ca3bbb97d117/FLAG4fa8f007c [2021-10-28 09:05:15,266 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:05:15,275 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95178ba9-5fc0-4419-8b11-4f279fb651df/sv-benchmarks/c/memsafety/cmp-freed-ptr.i [2021-10-28 09:05:15,297 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95178ba9-5fc0-4419-8b11-4f279fb651df/bin/uautomizer-UnR33cPsHg/data/db516a47b/080fa5ef3088483b8ce3ca3bbb97d117/FLAG4fa8f007c [2021-10-28 09:05:15,556 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95178ba9-5fc0-4419-8b11-4f279fb651df/bin/uautomizer-UnR33cPsHg/data/db516a47b/080fa5ef3088483b8ce3ca3bbb97d117 [2021-10-28 09:05:15,559 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:05:15,561 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 09:05:15,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:05:15,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:05:15,573 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:05:15,574 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:05:15" (1/1) ... [2021-10-28 09:05:15,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b84d57b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:05:15, skipping insertion in model container [2021-10-28 09:05:15,576 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:05:15" (1/1) ... [2021-10-28 09:05:15,584 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:05:15,645 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:05:15,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:05:15,965 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:05:16,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:05:16,055 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:05:16,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:05:16 WrapperNode [2021-10-28 09:05:16,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:05:16,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:05:16,057 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:05:16,057 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:05:16,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:05:16" (1/1) ... [2021-10-28 09:05:16,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:05:16" (1/1) ... [2021-10-28 09:05:16,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:05:16" (1/1) ... [2021-10-28 09:05:16,086 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:05:16" (1/1) ... [2021-10-28 09:05:16,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:05:16" (1/1) ... [2021-10-28 09:05:16,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:05:16" (1/1) ... [2021-10-28 09:05:16,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:05:16" (1/1) ... [2021-10-28 09:05:16,113 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:05:16,114 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:05:16,114 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:05:16,114 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:05:16,115 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:05:16" (1/1) ... [2021-10-28 09:05:16,131 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:05:16,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95178ba9-5fc0-4419-8b11-4f279fb651df/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:05:16,189 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95178ba9-5fc0-4419-8b11-4f279fb651df/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:05:16,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95178ba9-5fc0-4419-8b11-4f279fb651df/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:05:16,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 09:05:16,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:05:16,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 09:05:16,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 09:05:16,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-28 09:05:16,252 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-28 09:05:16,252 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-28 09:05:16,253 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 09:05:16,253 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 09:05:16,253 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 09:05:16,253 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 09:05:16,254 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 09:05:16,255 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 09:05:16,255 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 09:05:16,255 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 09:05:16,256 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 09:05:16,256 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 09:05:16,256 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 09:05:16,256 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 09:05:16,256 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 09:05:16,257 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 09:05:16,257 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 09:05:16,257 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 09:05:16,257 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 09:05:16,257 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 09:05:16,258 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 09:05:16,258 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-28 09:05:16,258 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-28 09:05:16,258 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-28 09:05:16,258 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 09:05:16,259 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 09:05:16,259 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 09:05:16,259 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 09:05:16,259 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 09:05:16,259 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 09:05:16,260 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 09:05:16,260 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 09:05:16,260 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 09:05:16,260 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 09:05:16,261 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 09:05:16,261 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 09:05:16,261 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 09:05:16,262 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 09:05:16,262 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 09:05:16,262 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 09:05:16,262 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 09:05:16,262 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 09:05:16,263 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 09:05:16,264 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 09:05:16,264 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 09:05:16,264 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 09:05:16,264 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 09:05:16,265 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 09:05:16,265 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 09:05:16,265 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 09:05:16,265 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 09:05:16,266 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 09:05:16,266 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 09:05:16,266 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 09:05:16,266 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 09:05:16,266 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 09:05:16,266 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 09:05:16,267 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 09:05:16,267 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 09:05:16,267 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 09:05:16,267 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 09:05:16,268 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 09:05:16,268 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 09:05:16,269 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 09:05:16,270 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 09:05:16,270 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 09:05:16,271 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 09:05:16,271 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 09:05:16,271 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 09:05:16,271 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 09:05:16,271 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 09:05:16,271 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 09:05:16,272 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 09:05:16,272 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 09:05:16,272 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 09:05:16,272 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 09:05:16,272 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 09:05:16,273 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 09:05:16,273 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 09:05:16,273 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 09:05:16,273 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 09:05:16,273 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 09:05:16,273 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 09:05:16,274 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 09:05:16,274 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 09:05:16,274 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 09:05:16,274 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 09:05:16,274 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 09:05:16,275 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 09:05:16,275 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 09:05:16,275 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 09:05:16,275 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 09:05:16,275 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 09:05:16,275 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 09:05:16,276 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 09:05:16,276 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 09:05:16,276 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 09:05:16,276 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 09:05:16,276 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 09:05:16,276 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 09:05:16,277 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 09:05:16,277 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 09:05:16,277 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 09:05:16,278 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 09:05:16,278 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 09:05:16,278 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 09:05:16,278 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 09:05:16,278 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 09:05:16,279 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 09:05:16,280 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 09:05:16,280 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 09:05:16,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 09:05:16,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:05:16,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 09:05:16,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:05:16,823 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:05:16,823 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-10-28 09:05:16,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:05:16 BoogieIcfgContainer [2021-10-28 09:05:16,826 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:05:16,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:05:16,829 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:05:16,833 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:05:16,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:05:15" (1/3) ... [2021-10-28 09:05:16,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@332dba1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:05:16, skipping insertion in model container [2021-10-28 09:05:16,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:05:16" (2/3) ... [2021-10-28 09:05:16,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@332dba1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:05:16, skipping insertion in model container [2021-10-28 09:05:16,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:05:16" (3/3) ... [2021-10-28 09:05:16,838 INFO L111 eAbstractionObserver]: Analyzing ICFG cmp-freed-ptr.i [2021-10-28 09:05:16,845 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:05:16,845 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-28 09:05:16,933 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:05:16,948 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 09:05:16,950 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-10-28 09:05:16,969 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 25 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 09:05:16,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 09:05:16,986 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:05:16,987 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:05:16,988 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ASSERT_VIOLATIONMEMORY_FREE (and 6 more)] === [2021-10-28 09:05:16,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:05:16,994 INFO L85 PathProgramCache]: Analyzing trace with hash 542822380, now seen corresponding path program 1 times [2021-10-28 09:05:17,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:05:17,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181091270] [2021-10-28 09:05:17,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:05:17,006 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:05:17,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:05:17,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:05:17,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:05:17,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:05:17,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:05:17,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181091270] [2021-10-28 09:05:17,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181091270] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:05:17,201 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:05:17,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:05:17,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137003042] [2021-10-28 09:05:17,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:05:17,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:05:17,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:05:17,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:05:17,225 INFO L87 Difference]: Start difference. First operand has 30 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 25 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:05:17,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:05:17,303 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2021-10-28 09:05:17,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:05:17,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 7 [2021-10-28 09:05:17,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:05:17,314 INFO L225 Difference]: With dead ends: 29 [2021-10-28 09:05:17,314 INFO L226 Difference]: Without dead ends: 26 [2021-10-28 09:05:17,316 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:05:17,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-28 09:05:17,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-10-28 09:05:17,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 22 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:05:17,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2021-10-28 09:05:17,353 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 7 [2021-10-28 09:05:17,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:05:17,353 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2021-10-28 09:05:17,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:05:17,354 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2021-10-28 09:05:17,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 09:05:17,354 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:05:17,355 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:05:17,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:05:17,355 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ASSERT_VIOLATIONMEMORY_FREE (and 6 more)] === [2021-10-28 09:05:17,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:05:17,356 INFO L85 PathProgramCache]: Analyzing trace with hash -352375362, now seen corresponding path program 1 times [2021-10-28 09:05:17,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:05:17,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83483605] [2021-10-28 09:05:17,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:05:17,357 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:05:17,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:05:17,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:05:17,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:05:17,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:05:17,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:05:17,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83483605] [2021-10-28 09:05:17,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83483605] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:05:17,419 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:05:17,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:05:17,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448966833] [2021-10-28 09:05:17,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:05:17,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:05:17,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:05:17,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:05:17,423 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:05:17,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:05:17,474 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2021-10-28 09:05:17,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:05:17,474 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 8 [2021-10-28 09:05:17,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:05:17,475 INFO L225 Difference]: With dead ends: 25 [2021-10-28 09:05:17,475 INFO L226 Difference]: Without dead ends: 25 [2021-10-28 09:05:17,476 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:05:17,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-28 09:05:17,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-10-28 09:05:17,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 21 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:05:17,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2021-10-28 09:05:17,481 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 8 [2021-10-28 09:05:17,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:05:17,481 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2021-10-28 09:05:17,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:05:17,482 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2021-10-28 09:05:17,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 09:05:17,482 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:05:17,483 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:05:17,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:05:17,483 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr2ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ASSERT_VIOLATIONMEMORY_FREE (and 6 more)] === [2021-10-28 09:05:17,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:05:17,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1961265710, now seen corresponding path program 1 times [2021-10-28 09:05:17,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:05:17,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622839954] [2021-10-28 09:05:17,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:05:17,485 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:05:17,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:05:17,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:05:17,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:05:17,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:05:17,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:05:17,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622839954] [2021-10-28 09:05:17,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622839954] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:05:17,553 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:05:17,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:05:17,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71890935] [2021-10-28 09:05:17,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:05:17,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:05:17,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:05:17,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:05:17,556 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:05:17,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:05:17,605 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2021-10-28 09:05:17,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:05:17,606 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 9 [2021-10-28 09:05:17,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:05:17,607 INFO L225 Difference]: With dead ends: 24 [2021-10-28 09:05:17,607 INFO L226 Difference]: Without dead ends: 24 [2021-10-28 09:05:17,608 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:05:17,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-28 09:05:17,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-28 09:05:17,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 14 states have (on average 1.5) internal successors, (21), 20 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:05:17,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2021-10-28 09:05:17,613 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 9 [2021-10-28 09:05:17,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:05:17,613 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2021-10-28 09:05:17,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:05:17,614 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2021-10-28 09:05:17,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 09:05:17,615 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:05:17,615 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:05:17,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:05:17,615 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr3ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ASSERT_VIOLATIONMEMORY_FREE (and 6 more)] === [2021-10-28 09:05:17,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:05:17,616 INFO L85 PathProgramCache]: Analyzing trace with hash -714294128, now seen corresponding path program 1 times [2021-10-28 09:05:17,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:05:17,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003962508] [2021-10-28 09:05:17,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:05:17,617 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:05:17,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:05:17,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:05:17,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:05:17,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:05:17,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:05:17,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003962508] [2021-10-28 09:05:17,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003962508] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:05:17,697 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:05:17,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:05:17,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89270362] [2021-10-28 09:05:17,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:05:17,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:05:17,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:05:17,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:05:17,700 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) [2021-10-28 09:05:17,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:05:17,776 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2021-10-28 09:05:17,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:05:17,777 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 [2021-10-28 09:05:17,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:05:17,793 INFO L225 Difference]: With dead ends: 22 [2021-10-28 09:05:17,793 INFO L226 Difference]: Without dead ends: 22 [2021-10-28 09:05:17,793 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:05:17,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-28 09:05:17,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-10-28 09:05:17,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 18 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:05:17,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2021-10-28 09:05:17,797 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 11 [2021-10-28 09:05:17,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:05:17,798 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2021-10-28 09:05:17,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) [2021-10-28 09:05:17,798 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2021-10-28 09:05:17,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 09:05:17,799 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:05:17,799 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:05:17,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 09:05:17,800 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr4ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ASSERT_VIOLATIONMEMORY_FREE (and 6 more)] === [2021-10-28 09:05:17,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:05:17,800 INFO L85 PathProgramCache]: Analyzing trace with hash -668281437, now seen corresponding path program 1 times [2021-10-28 09:05:17,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:05:17,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390860127] [2021-10-28 09:05:17,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:05:17,801 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:05:17,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:05:17,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:05:17,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:05:17,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:05:17,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:05:17,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390860127] [2021-10-28 09:05:17,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390860127] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:05:17,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:05:17,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:05:17,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173026361] [2021-10-28 09:05:17,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:05:17,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:05:17,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:05:17,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:05:17,921 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:05:17,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:05:17,963 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-10-28 09:05:17,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:05:17,964 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-10-28 09:05:17,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:05:17,966 INFO L225 Difference]: With dead ends: 20 [2021-10-28 09:05:17,966 INFO L226 Difference]: Without dead ends: 20 [2021-10-28 09:05:17,967 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:05:17,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-28 09:05:17,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-28 09:05:17,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 16 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:05:17,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2021-10-28 09:05:17,975 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 12 [2021-10-28 09:05:17,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:05:17,976 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2021-10-28 09:05:17,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:05:17,976 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2021-10-28 09:05:17,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 09:05:17,978 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:05:17,979 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:05:17,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 09:05:17,979 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr5ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ASSERT_VIOLATIONMEMORY_FREE (and 6 more)] === [2021-10-28 09:05:17,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:05:17,981 INFO L85 PathProgramCache]: Analyzing trace with hash 758111986, now seen corresponding path program 1 times [2021-10-28 09:05:17,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:05:17,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851491268] [2021-10-28 09:05:17,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:05:17,981 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:05:18,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:05:18,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:05:18,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:05:18,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:05:18,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:05:18,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851491268] [2021-10-28 09:05:18,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851491268] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:05:18,065 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:05:18,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:05:18,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472631602] [2021-10-28 09:05:18,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:05:18,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:05:18,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:05:18,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:05:18,068 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:05:18,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:05:18,117 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2021-10-28 09:05:18,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:05:18,118 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 13 [2021-10-28 09:05:18,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:05:18,120 INFO L225 Difference]: With dead ends: 22 [2021-10-28 09:05:18,121 INFO L226 Difference]: Without dead ends: 22 [2021-10-28 09:05:18,124 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:05:18,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-28 09:05:18,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-10-28 09:05:18,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:05:18,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2021-10-28 09:05:18,135 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 13 [2021-10-28 09:05:18,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:05:18,135 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2021-10-28 09:05:18,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:05:18,136 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2021-10-28 09:05:18,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 09:05:18,137 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:05:18,137 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:05:18,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 09:05:18,137 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr9ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ASSERT_VIOLATIONMEMORY_FREE (and 6 more)] === [2021-10-28 09:05:18,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:05:18,138 INFO L85 PathProgramCache]: Analyzing trace with hash 2034300366, now seen corresponding path program 1 times [2021-10-28 09:05:18,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:05:18,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344708542] [2021-10-28 09:05:18,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:05:18,139 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:05:18,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:05:18,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:05:18,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:05:18,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:05:18,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:05:18,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344708542] [2021-10-28 09:05:18,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344708542] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:05:18,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:05:18,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:05:18,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339807404] [2021-10-28 09:05:18,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:05:18,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:05:18,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:05:18,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:05:18,242 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:05:18,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:05:18,311 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2021-10-28 09:05:18,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:05:18,312 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 14 [2021-10-28 09:05:18,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:05:18,313 INFO L225 Difference]: With dead ends: 21 [2021-10-28 09:05:18,313 INFO L226 Difference]: Without dead ends: 17 [2021-10-28 09:05:18,315 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:05:18,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-28 09:05:18,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-28 09:05:18,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.0) internal successors, (13), 13 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:05:18,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 16 transitions. [2021-10-28 09:05:18,322 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 16 transitions. Word has length 14 [2021-10-28 09:05:18,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:05:18,322 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 16 transitions. [2021-10-28 09:05:18,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:05:18,323 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 16 transitions. [2021-10-28 09:05:18,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 09:05:18,324 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:05:18,324 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:05:18,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 09:05:18,324 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr8ASSERT_VIOLATIONMEMORY_FREE === [mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr3ASSERT_VIOLATIONMEMORY_FREE (and 6 more)] === [2021-10-28 09:05:18,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:05:18,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1976190218, now seen corresponding path program 1 times [2021-10-28 09:05:18,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:05:18,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803957647] [2021-10-28 09:05:18,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:05:18,327 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:05:18,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:05:18,364 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:05:18,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:05:18,403 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:05:18,404 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 09:05:18,405 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr8ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:05:18,407 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:05:18,407 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:05:18,408 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:05:18,408 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:05:18,408 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:05:18,408 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:05:18,409 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:05:18,409 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 09:05:18,409 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 09:05:18,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 09:05:18,413 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:05:18,418 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:05:18,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:05:18 BoogieIcfgContainer [2021-10-28 09:05:18,442 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:05:18,443 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:05:18,443 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:05:18,443 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:05:18,444 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:05:16" (3/4) ... [2021-10-28 09:05:18,446 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 09:05:18,491 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95178ba9-5fc0-4419-8b11-4f279fb651df/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:05:18,491 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:05:18,493 INFO L168 Benchmark]: Toolchain (without parser) took 2931.03 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 60.6 MB in the beginning and 57.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 20.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:05:18,494 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 94.4 MB. Free memory is still 47.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:05:18,495 INFO L168 Benchmark]: CACSL2BoogieTranslator took 488.29 ms. Allocated memory is still 94.4 MB. Free memory was 60.4 MB in the beginning and 64.2 MB in the end (delta: -3.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:05:18,495 INFO L168 Benchmark]: Boogie Preprocessor took 55.94 ms. Allocated memory is still 94.4 MB. Free memory was 64.2 MB in the beginning and 62.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:05:18,496 INFO L168 Benchmark]: RCFGBuilder took 713.00 ms. Allocated memory is still 94.4 MB. Free memory was 62.1 MB in the beginning and 44.9 MB in the end (delta: 17.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-28 09:05:18,497 INFO L168 Benchmark]: TraceAbstraction took 1613.49 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 44.6 MB in the beginning and 59.1 MB in the end (delta: -14.6 MB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:05:18,498 INFO L168 Benchmark]: Witness Printer took 48.45 ms. Allocated memory is still 113.2 MB. Free memory was 59.1 MB in the beginning and 57.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:05:18,501 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 94.4 MB. Free memory is still 47.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 488.29 ms. Allocated memory is still 94.4 MB. Free memory was 60.4 MB in the beginning and 64.2 MB in the end (delta: -3.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.94 ms. Allocated memory is still 94.4 MB. Free memory was 64.2 MB in the beginning and 62.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 713.00 ms. Allocated memory is still 94.4 MB. Free memory was 62.1 MB in the beginning and 44.9 MB in the end (delta: 17.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1613.49 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 44.6 MB in the beginning and 59.1 MB in the end (delta: -14.6 MB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. * Witness Printer took 48.45 ms. Allocated memory is still 113.2 MB. Free memory was 59.1 MB in the beginning and 57.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 554]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L543] struct T* x = ((void *)0); [L544] struct T* y = ((void *)0); [L545] y = malloc(sizeof(*y)) [L546] intptr_t adressY = (intptr_t) y; VAL [adressY=2, x={0:0}, y={2:0}] [L547] free(y) VAL [adressY=2, x={0:0}, y={2:0}] [L547] free(y) VAL [adressY=2, x={0:0}, y={2:0}] [L547] free(y) [L548] x = malloc(sizeof(*x)) [L549] intptr_t adressX = (intptr_t) x; VAL [adressX=2, adressY=2, x={2:0}, y={2:0}] [L550] COND TRUE adressX == adressY VAL [adressX=2, adressY=2, x={2:0}, y={2:0}] [L552] free(x) VAL [adressX=2, adressY=2, x={2:0}, y={2:0}] [L552] free(x) VAL [adressX=2, adressY=2, x={2:0}, y={2:0}] [L552] free(x) [L554] free(x) VAL [adressX=2, adressY=2, x={2:0}, y={2:0}] [L554] free(x) VAL [adressX=2, adressY=2, x={2:0}, y={2:0}] [L554] free(x) VAL [adressX=2, adressY=2, x={2:0}, y={2:0}] - UnprovableResult [Line: 547]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 539]: 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 8 procedures, 45 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 115 SDtfs, 72 SDslu, 71 SDs, 0 SdLazy, 212 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, InterpolantAutomatonStates: 31, 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 67 ConstructedInterpolants, 0 QuantifiedInterpolants, 213 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-28 09:05:18,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95178ba9-5fc0-4419-8b11-4f279fb651df/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...