./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d411942b-3489-4e69-bae2-cd15acef6027/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d411942b-3489-4e69-bae2-cd15acef6027/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d411942b-3489-4e69-bae2-cd15acef6027/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d411942b-3489-4e69-bae2-cd15acef6027/bin/uautomizer-j4sWxH34Be/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d411942b-3489-4e69-bae2-cd15acef6027/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d411942b-3489-4e69-bae2-cd15acef6027/bin/uautomizer-j4sWxH34Be --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 d759988a90bf6714578fc618630dc9d346515dfe23789cba296c3d8ccdbe3f23 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:57:16,016 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:57:16,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:57:16,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:57:16,063 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:57:16,064 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:57:16,066 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:57:16,069 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:57:16,072 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:57:16,073 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:57:16,075 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:57:16,076 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:57:16,077 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:57:16,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:57:16,081 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:57:16,083 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:57:16,084 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:57:16,085 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:57:16,088 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:57:16,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:57:16,101 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:57:16,104 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:57:16,106 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:57:16,107 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:57:16,111 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:57:16,112 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:57:16,112 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:57:16,114 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:57:16,114 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:57:16,127 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:57:16,127 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:57:16,128 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:57:16,131 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:57:16,132 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:57:16,134 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:57:16,134 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:57:16,135 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:57:16,136 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:57:16,136 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:57:16,137 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:57:16,138 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:57:16,139 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d411942b-3489-4e69-bae2-cd15acef6027/bin/uautomizer-j4sWxH34Be/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-21 19:57:16,174 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:57:16,174 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:57:16,174 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:57:16,175 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:57:16,176 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:57:16,176 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:57:16,177 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:57:16,177 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:57:16,177 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:57:16,178 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:57:16,178 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:57:16,178 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:57:16,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:57:16,179 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-21 19:57:16,179 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-21 19:57:16,179 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-21 19:57:16,179 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:57:16,180 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-21 19:57:16,180 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:57:16,180 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:57:16,181 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:57:16,181 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:57:16,181 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:57:16,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:57:16,182 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:57:16,182 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:57:16,182 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:57:16,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:57:16,183 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:57:16,183 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_d411942b-3489-4e69-bae2-cd15acef6027/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d411942b-3489-4e69-bae2-cd15acef6027/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d759988a90bf6714578fc618630dc9d346515dfe23789cba296c3d8ccdbe3f23 [2021-10-21 19:57:16,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:57:16,524 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:57:16,527 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:57:16,530 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:57:16,532 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:57:16,533 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d411942b-3489-4e69-bae2-cd15acef6027/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i [2021-10-21 19:57:16,612 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d411942b-3489-4e69-bae2-cd15acef6027/bin/uautomizer-j4sWxH34Be/data/b0ed09a60/83910de3574944f29ab4a2752d4a2435/FLAG50bd625cd [2021-10-21 19:57:17,213 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:57:17,213 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d411942b-3489-4e69-bae2-cd15acef6027/sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i [2021-10-21 19:57:17,237 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d411942b-3489-4e69-bae2-cd15acef6027/bin/uautomizer-j4sWxH34Be/data/b0ed09a60/83910de3574944f29ab4a2752d4a2435/FLAG50bd625cd [2021-10-21 19:57:17,554 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d411942b-3489-4e69-bae2-cd15acef6027/bin/uautomizer-j4sWxH34Be/data/b0ed09a60/83910de3574944f29ab4a2752d4a2435 [2021-10-21 19:57:17,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:57:17,559 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-21 19:57:17,561 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:57:17,561 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:57:17,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:57:17,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:57:17" (1/1) ... [2021-10-21 19:57:17,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b1ec0b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:57:17, skipping insertion in model container [2021-10-21 19:57:17,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:57:17" (1/1) ... [2021-10-21 19:57:17,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:57:17,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:57:17,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:57:17,978 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:57:18,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:57:18,106 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:57:18,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:57:18 WrapperNode [2021-10-21 19:57:18,107 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:57:18,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:57:18,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:57:18,109 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:57:18,123 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:57:18" (1/1) ... [2021-10-21 19:57:18,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:57:18" (1/1) ... [2021-10-21 19:57:18,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:57:18" (1/1) ... [2021-10-21 19:57:18,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:57:18" (1/1) ... [2021-10-21 19:57:18,152 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:57:18" (1/1) ... [2021-10-21 19:57:18,162 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:57:18" (1/1) ... [2021-10-21 19:57:18,175 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:57:18" (1/1) ... [2021-10-21 19:57:18,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:57:18,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:57:18,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:57:18,183 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:57:18,194 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:57:18" (1/1) ... [2021-10-21 19:57:18,204 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:57:18,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d411942b-3489-4e69-bae2-cd15acef6027/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:57:18,241 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d411942b-3489-4e69-bae2-cd15acef6027/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:57:18,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d411942b-3489-4e69-bae2-cd15acef6027/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:57:18,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-21 19:57:18,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:57:18,299 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-21 19:57:18,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-21 19:57:18,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-21 19:57:18,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-21 19:57:18,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-21 19:57:18,300 INFO L138 BoogieDeclarations]: Found implementation of procedure cbzero [2021-10-21 19:57:18,301 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-21 19:57:18,301 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-21 19:57:18,301 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-21 19:57:18,301 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-21 19:57:18,302 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-21 19:57:18,302 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-21 19:57:18,302 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-21 19:57:18,302 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-21 19:57:18,302 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-21 19:57:18,303 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-21 19:57:18,303 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-21 19:57:18,303 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-21 19:57:18,303 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-21 19:57:18,303 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-21 19:57:18,304 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-21 19:57:18,304 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-21 19:57:18,304 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-21 19:57:18,304 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-21 19:57:18,304 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-21 19:57:18,305 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-21 19:57:18,305 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-21 19:57:18,305 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-21 19:57:18,305 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-21 19:57:18,305 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-21 19:57:18,306 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-21 19:57:18,306 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-21 19:57:18,306 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-21 19:57:18,306 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-21 19:57:18,306 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-21 19:57:18,307 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-21 19:57:18,307 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-21 19:57:18,307 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-21 19:57:18,307 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-21 19:57:18,307 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-21 19:57:18,308 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-21 19:57:18,308 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-21 19:57:18,308 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-21 19:57:18,308 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-21 19:57:18,308 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-21 19:57:18,309 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-21 19:57:18,309 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-21 19:57:18,309 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-21 19:57:18,309 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-21 19:57:18,310 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-21 19:57:18,310 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-21 19:57:18,310 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-21 19:57:18,310 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-21 19:57:18,310 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-21 19:57:18,311 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-21 19:57:18,311 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-21 19:57:18,311 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-21 19:57:18,311 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-21 19:57:18,312 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-21 19:57:18,312 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-21 19:57:18,312 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-21 19:57:18,312 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-21 19:57:18,312 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-21 19:57:18,313 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-21 19:57:18,313 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-21 19:57:18,313 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-21 19:57:18,313 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-21 19:57:18,314 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-21 19:57:18,314 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-21 19:57:18,314 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-21 19:57:18,314 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-21 19:57:18,314 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-21 19:57:18,315 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-21 19:57:18,315 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-21 19:57:18,315 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-21 19:57:18,315 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-21 19:57:18,316 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-21 19:57:18,316 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-21 19:57:18,316 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-21 19:57:18,316 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-21 19:57:18,317 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-21 19:57:18,317 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-21 19:57:18,317 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-21 19:57:18,317 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-21 19:57:18,318 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-21 19:57:18,318 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-21 19:57:18,318 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-21 19:57:18,318 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-21 19:57:18,318 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-21 19:57:18,319 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-21 19:57:18,319 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-21 19:57:18,319 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-21 19:57:18,319 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-21 19:57:18,320 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-21 19:57:18,320 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-21 19:57:18,320 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-21 19:57:18,320 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-21 19:57:18,321 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-21 19:57:18,321 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-21 19:57:18,321 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-21 19:57:18,321 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-21 19:57:18,321 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-21 19:57:18,322 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-21 19:57:18,322 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-21 19:57:18,322 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-21 19:57:18,322 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-21 19:57:18,323 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-21 19:57:18,323 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-21 19:57:18,323 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-21 19:57:18,323 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-21 19:57:18,324 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-21 19:57:18,324 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-21 19:57:18,324 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-21 19:57:18,324 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-21 19:57:18,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-21 19:57:18,325 INFO L130 BoogieDeclarations]: Found specification of procedure cbzero [2021-10-21 19:57:18,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 19:57:18,325 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-21 19:57:18,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:57:18,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 19:57:18,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-21 19:57:18,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:57:18,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-21 19:57:18,734 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:57:18,735 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-21 19:57:18,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:57:18 BoogieIcfgContainer [2021-10-21 19:57:18,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:57:18,745 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:57:18,748 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:57:18,753 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:57:18,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:57:17" (1/3) ... [2021-10-21 19:57:18,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ff39b35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:57:18, skipping insertion in model container [2021-10-21 19:57:18,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:57:18" (2/3) ... [2021-10-21 19:57:18,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ff39b35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:57:18, skipping insertion in model container [2021-10-21 19:57:18,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:57:18" (3/3) ... [2021-10-21 19:57:18,762 INFO L111 eAbstractionObserver]: Analyzing ICFG openbsd_cbzero-alloca-2.i [2021-10-21 19:57:18,774 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:57:18,784 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-21 19:57:18,850 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:57:18,857 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 [2021-10-21 19:57:18,858 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-21 19:57:18,875 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 18 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-21 19:57:18,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-21 19:57:18,884 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:57:18,885 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:57:18,885 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [cbzeroErr0REQUIRES_VIOLATION, cbzeroErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-21 19:57:18,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:57:18,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1664038058, now seen corresponding path program 1 times [2021-10-21 19:57:18,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:57:18,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859077223] [2021-10-21 19:57:18,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:57:18,906 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:57:19,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:19,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:57:19,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:19,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:57:19,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:57:19,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859077223] [2021-10-21 19:57:19,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859077223] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:57:19,158 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:57:19,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:57:19,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104319440] [2021-10-21 19:57:19,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:57:19,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:57:19,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:57:19,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:57:19,198 INFO L87 Difference]: Start difference. First operand has 25 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 18 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:19,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:57:19,408 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2021-10-21 19:57:19,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:57:19,410 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-10-21 19:57:19,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:57:19,417 INFO L225 Difference]: With dead ends: 28 [2021-10-21 19:57:19,417 INFO L226 Difference]: Without dead ends: 23 [2021-10-21 19:57:19,418 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 95.1ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:57:19,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-21 19:57:19,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2021-10-21 19:57:19,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 16 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-21 19:57:19,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-10-21 19:57:19,453 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 10 [2021-10-21 19:57:19,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:57:19,454 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-10-21 19:57:19,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:19,454 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-10-21 19:57:19,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-21 19:57:19,455 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:57:19,455 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:57:19,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:57:19,456 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting cbzeroErr0REQUIRES_VIOLATION === [cbzeroErr0REQUIRES_VIOLATION, cbzeroErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-21 19:57:19,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:57:19,457 INFO L82 PathProgramCache]: Analyzing trace with hash 469198071, now seen corresponding path program 1 times [2021-10-21 19:57:19,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:57:19,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017034899] [2021-10-21 19:57:19,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:57:19,458 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:57:19,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:19,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:57:19,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:19,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:57:19,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:57:19,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017034899] [2021-10-21 19:57:19,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017034899] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:57:19,632 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:57:19,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:57:19,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334417414] [2021-10-21 19:57:19,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:57:19,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:57:19,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:57:19,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:57:19,640 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 7 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:19,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:57:19,821 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2021-10-21 19:57:19,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:57:19,828 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-10-21 19:57:19,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:57:19,829 INFO L225 Difference]: With dead ends: 21 [2021-10-21 19:57:19,829 INFO L226 Difference]: Without dead ends: 21 [2021-10-21 19:57:19,830 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 108.7ms TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:57:19,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-21 19:57:19,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-10-21 19:57:19,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-21 19:57:19,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2021-10-21 19:57:19,835 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 14 [2021-10-21 19:57:19,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:57:19,835 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2021-10-21 19:57:19,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:19,836 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2021-10-21 19:57:19,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-21 19:57:19,837 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:57:19,837 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:57:19,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:57:19,838 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting cbzeroErr1REQUIRES_VIOLATION === [cbzeroErr0REQUIRES_VIOLATION, cbzeroErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-21 19:57:19,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:57:19,840 INFO L82 PathProgramCache]: Analyzing trace with hash 469198072, now seen corresponding path program 1 times [2021-10-21 19:57:19,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:57:19,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024654648] [2021-10-21 19:57:19,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:57:19,841 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:57:19,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:20,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:57:20,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:20,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:57:20,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:57:20,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024654648] [2021-10-21 19:57:20,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024654648] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:57:20,036 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:57:20,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 19:57:20,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938637002] [2021-10-21 19:57:20,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 19:57:20,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:57:20,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:57:20,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:57:20,038 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:20,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:57:20,255 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2021-10-21 19:57:20,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:57:20,256 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-10-21 19:57:20,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:57:20,259 INFO L225 Difference]: With dead ends: 27 [2021-10-21 19:57:20,260 INFO L226 Difference]: Without dead ends: 27 [2021-10-21 19:57:20,260 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 134.2ms TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-10-21 19:57:20,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-21 19:57:20,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2021-10-21 19:57:20,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 18 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-21 19:57:20,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2021-10-21 19:57:20,267 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 14 [2021-10-21 19:57:20,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:57:20,267 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-10-21 19:57:20,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:20,268 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2021-10-21 19:57:20,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 19:57:20,269 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:57:20,269 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:57:20,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 19:57:20,270 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [cbzeroErr0REQUIRES_VIOLATION, cbzeroErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-21 19:57:20,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:57:20,270 INFO L82 PathProgramCache]: Analyzing trace with hash 2054568730, now seen corresponding path program 1 times [2021-10-21 19:57:20,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:57:20,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380157482] [2021-10-21 19:57:20,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:57:20,271 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:57:20,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:20,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:57:20,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:20,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 19:57:20,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:20,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:57:20,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:57:20,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380157482] [2021-10-21 19:57:20,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380157482] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:57:20,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:57:20,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-21 19:57:20,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003944281] [2021-10-21 19:57:20,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 19:57:20,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:57:20,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:57:20,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:57:20,448 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 8 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-21 19:57:20,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:57:20,663 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2021-10-21 19:57:20,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 19:57:20,664 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2021-10-21 19:57:20,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:57:20,666 INFO L225 Difference]: With dead ends: 34 [2021-10-21 19:57:20,666 INFO L226 Difference]: Without dead ends: 34 [2021-10-21 19:57:20,672 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 183.2ms TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-10-21 19:57:20,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-21 19:57:20,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2021-10-21 19:57:20,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.263157894736842) internal successors, (24), 22 states have internal predecessors, (24), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-21 19:57:20,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2021-10-21 19:57:20,688 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2021-10-21 19:57:20,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:57:20,689 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2021-10-21 19:57:20,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-21 19:57:20,689 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2021-10-21 19:57:20,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 19:57:20,693 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:57:20,693 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:57:20,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 19:57:20,696 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [cbzeroErr0REQUIRES_VIOLATION, cbzeroErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-21 19:57:20,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:57:20,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1661541720, now seen corresponding path program 1 times [2021-10-21 19:57:20,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:57:20,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910886148] [2021-10-21 19:57:20,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:57:20,699 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:57:20,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:20,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:57:20,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:20,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 19:57:20,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:20,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:57:20,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:57:20,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910886148] [2021-10-21 19:57:20,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910886148] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:57:20,883 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:57:20,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-21 19:57:20,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317100175] [2021-10-21 19:57:20,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 19:57:20,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:57:20,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 19:57:20,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:57:20,885 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-21 19:57:21,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:57:21,106 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2021-10-21 19:57:21,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 19:57:21,107 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2021-10-21 19:57:21,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:57:21,107 INFO L225 Difference]: With dead ends: 28 [2021-10-21 19:57:21,108 INFO L226 Difference]: Without dead ends: 26 [2021-10-21 19:57:21,108 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 171.9ms TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-10-21 19:57:21,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-21 19:57:21,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2021-10-21 19:57:21,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-21 19:57:21,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2021-10-21 19:57:21,112 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 17 [2021-10-21 19:57:21,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:57:21,112 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2021-10-21 19:57:21,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-21 19:57:21,113 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2021-10-21 19:57:21,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-21 19:57:21,113 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:57:21,113 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:57:21,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-21 19:57:21,114 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting cbzeroErr1REQUIRES_VIOLATION === [cbzeroErr0REQUIRES_VIOLATION, cbzeroErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-21 19:57:21,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:57:21,114 INFO L82 PathProgramCache]: Analyzing trace with hash -684268688, now seen corresponding path program 1 times [2021-10-21 19:57:21,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:57:21,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794734904] [2021-10-21 19:57:21,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:57:21,115 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:57:21,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:21,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:57:21,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:21,241 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:57:21,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:57:21,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794734904] [2021-10-21 19:57:21,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794734904] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:57:21,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439163227] [2021-10-21 19:57:21,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:57:21,242 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:57:21,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d411942b-3489-4e69-bae2-cd15acef6027/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:57:21,264 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d411942b-3489-4e69-bae2-cd15acef6027/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:57:21,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d411942b-3489-4e69-bae2-cd15acef6027/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 19:57:21,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:21,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-21 19:57:21,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:57:21,700 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:57:21,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439163227] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:57:21,700 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:57:21,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2021-10-21 19:57:21,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118239803] [2021-10-21 19:57:21,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 19:57:21,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:57:21,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 19:57:21,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:57:21,703 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:21,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:57:21,872 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2021-10-21 19:57:21,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:57:21,873 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-10-21 19:57:21,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:57:21,877 INFO L225 Difference]: With dead ends: 38 [2021-10-21 19:57:21,877 INFO L226 Difference]: Without dead ends: 38 [2021-10-21 19:57:21,882 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 129.5ms TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-10-21 19:57:21,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-21 19:57:21,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2021-10-21 19:57:21,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 28 states have internal predecessors, (30), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-21 19:57:21,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2021-10-21 19:57:21,895 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 18 [2021-10-21 19:57:21,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:57:21,896 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2021-10-21 19:57:21,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:21,898 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2021-10-21 19:57:21,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-21 19:57:21,899 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:57:21,899 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:57:21,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d411942b-3489-4e69-bae2-cd15acef6027/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-21 19:57:22,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d411942b-3489-4e69-bae2-cd15acef6027/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-21 19:57:22,128 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting cbzeroErr1REQUIRES_VIOLATION === [cbzeroErr0REQUIRES_VIOLATION, cbzeroErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-21 19:57:22,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:57:22,129 INFO L82 PathProgramCache]: Analyzing trace with hash 16795890, now seen corresponding path program 1 times [2021-10-21 19:57:22,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:57:22,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888841672] [2021-10-21 19:57:22,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:57:22,129 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:57:22,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:22,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:57:22,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:22,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:57:22,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:57:22,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888841672] [2021-10-21 19:57:22,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888841672] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:57:22,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89320096] [2021-10-21 19:57:22,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:57:22,447 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:57:22,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d411942b-3489-4e69-bae2-cd15acef6027/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:57:22,449 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d411942b-3489-4e69-bae2-cd15acef6027/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:57:22,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d411942b-3489-4e69-bae2-cd15acef6027/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-21 19:57:22,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:22,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 40 conjunts are in the unsatisfiable core [2021-10-21 19:57:22,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:57:22,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2021-10-21 19:57:23,119 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:57:23,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89320096] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:57:23,120 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:57:23,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-10-21 19:57:23,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035564966] [2021-10-21 19:57:23,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-21 19:57:23,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:57:23,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-21 19:57:23,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2021-10-21 19:57:23,122 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 20 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 states have internal predecessors, (24), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:23,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:57:23,515 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2021-10-21 19:57:23,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 19:57:23,516 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 states have internal predecessors, (24), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-10-21 19:57:23,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:57:23,517 INFO L225 Difference]: With dead ends: 40 [2021-10-21 19:57:23,517 INFO L226 Difference]: Without dead ends: 40 [2021-10-21 19:57:23,518 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 517.3ms TimeCoverageRelationStatistics Valid=107, Invalid=649, Unknown=0, NotChecked=0, Total=756 [2021-10-21 19:57:23,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-21 19:57:23,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2021-10-21 19:57:23,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 32 states have internal predecessors, (35), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-21 19:57:23,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2021-10-21 19:57:23,522 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 18 [2021-10-21 19:57:23,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:57:23,522 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2021-10-21 19:57:23,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 states have internal predecessors, (24), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:23,523 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2021-10-21 19:57:23,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-21 19:57:23,524 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:57:23,524 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:57:23,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d411942b-3489-4e69-bae2-cd15acef6027/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:57:23,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d411942b-3489-4e69-bae2-cd15acef6027/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-21 19:57:23,740 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [cbzeroErr0REQUIRES_VIOLATION, cbzeroErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-21 19:57:23,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:57:23,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1135310430, now seen corresponding path program 1 times [2021-10-21 19:57:23,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:57:23,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214781473] [2021-10-21 19:57:23,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:57:23,741 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:57:23,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:23,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:57:23,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:23,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 19:57:23,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:23,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-21 19:57:23,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:57:23,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214781473] [2021-10-21 19:57:23,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214781473] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:57:23,870 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:57:23,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:57:23,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513444319] [2021-10-21 19:57:23,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:57:23,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:57:23,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:57:23,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:57:23,873 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-21 19:57:23,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:57:23,944 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2021-10-21 19:57:23,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:57:23,945 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2021-10-21 19:57:23,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:57:23,947 INFO L225 Difference]: With dead ends: 38 [2021-10-21 19:57:23,947 INFO L226 Difference]: Without dead ends: 23 [2021-10-21 19:57:23,951 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 29.2ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:57:23,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-21 19:57:23,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-21 19:57:23,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:23,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2021-10-21 19:57:23,964 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 21 [2021-10-21 19:57:23,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:57:23,965 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2021-10-21 19:57:23,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-21 19:57:23,965 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2021-10-21 19:57:23,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-21 19:57:23,966 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:57:23,966 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:57:23,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-21 19:57:23,969 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting cbzeroErr1REQUIRES_VIOLATION === [cbzeroErr0REQUIRES_VIOLATION, cbzeroErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK] === [2021-10-21 19:57:23,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:57:23,972 INFO L82 PathProgramCache]: Analyzing trace with hash -2066138518, now seen corresponding path program 2 times [2021-10-21 19:57:23,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:57:23,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404004778] [2021-10-21 19:57:23,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:57:23,975 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:57:24,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:24,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-21 19:57:24,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:57:24,427 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:57:24,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:57:24,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404004778] [2021-10-21 19:57:24,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404004778] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:57:24,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168417064] [2021-10-21 19:57:24,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:57:24,428 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:57:24,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d411942b-3489-4e69-bae2-cd15acef6027/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:57:24,429 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d411942b-3489-4e69-bae2-cd15acef6027/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:57:24,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d411942b-3489-4e69-bae2-cd15acef6027/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-21 19:57:24,610 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:57:24,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:57:24,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 53 conjunts are in the unsatisfiable core [2021-10-21 19:57:24,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:57:24,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2021-10-21 19:57:25,275 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:57:25,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168417064] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:57:25,278 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:57:25,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 24 [2021-10-21 19:57:25,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321114707] [2021-10-21 19:57:25,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-21 19:57:25,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:57:25,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-21 19:57:25,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-10-21 19:57:25,282 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 25 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:26,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:57:26,146 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-10-21 19:57:26,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-21 19:57:26,147 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-10-21 19:57:26,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:57:26,148 INFO L225 Difference]: With dead ends: 27 [2021-10-21 19:57:26,148 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 19:57:26,149 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 1108.3ms TimeCoverageRelationStatistics Valid=187, Invalid=1295, Unknown=0, NotChecked=0, Total=1482 [2021-10-21 19:57:26,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 19:57:26,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 19:57:26,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:57:26,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 19:57:26,150 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2021-10-21 19:57:26,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:57:26,150 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:57:26,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 22 states have internal predecessors, (32), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:57:26,151 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 19:57:26,151 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 19:57:26,153 INFO L764 garLoopResultBuilder]: Registering result SAFE for location cbzeroErr0REQUIRES_VIOLATION [2021-10-21 19:57:26,154 INFO L764 garLoopResultBuilder]: Registering result SAFE for location cbzeroErr1REQUIRES_VIOLATION [2021-10-21 19:57:26,154 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-10-21 19:57:26,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d411942b-3489-4e69-bae2-cd15acef6027/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-21 19:57:26,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d411942b-3489-4e69-bae2-cd15acef6027/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:57:26,380 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:57:26,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:57:26 BoogieIcfgContainer [2021-10-21 19:57:26,383 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:57:26,383 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:57:26,384 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:57:26,384 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:57:26,385 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:57:18" (3/4) ... [2021-10-21 19:57:26,388 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 19:57:26,396 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-10-21 19:57:26,397 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2021-10-21 19:57:26,397 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2021-10-21 19:57:26,397 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2021-10-21 19:57:26,397 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2021-10-21 19:57:26,398 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cbzero [2021-10-21 19:57:26,398 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-10-21 19:57:26,398 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2021-10-21 19:57:26,402 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-21 19:57:26,403 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-21 19:57:26,403 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:57:26,403 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:57:26,451 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d411942b-3489-4e69-bae2-cd15acef6027/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:57:26,455 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:57:26,457 INFO L168 Benchmark]: Toolchain (without parser) took 8896.87 ms. Allocated memory was 88.1 MB in the beginning and 130.0 MB in the end (delta: 41.9 MB). Free memory was 49.9 MB in the beginning and 67.4 MB in the end (delta: -17.4 MB). Peak memory consumption was 23.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:57:26,458 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 88.1 MB. Free memory was 67.6 MB in the beginning and 67.5 MB in the end (delta: 43.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:57:26,459 INFO L168 Benchmark]: CACSL2BoogieTranslator took 546.96 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 49.7 MB in the beginning and 77.1 MB in the end (delta: -27.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:57:26,459 INFO L168 Benchmark]: Boogie Preprocessor took 73.90 ms. Allocated memory is still 107.0 MB. Free memory was 77.1 MB in the beginning and 74.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:57:26,460 INFO L168 Benchmark]: RCFGBuilder took 556.62 ms. Allocated memory is still 107.0 MB. Free memory was 74.8 MB in the beginning and 57.7 MB in the end (delta: 17.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-21 19:57:26,460 INFO L168 Benchmark]: TraceAbstraction took 7638.39 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 57.0 MB in the beginning and 70.3 MB in the end (delta: -13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:57:26,461 INFO L168 Benchmark]: Witness Printer took 71.47 ms. Allocated memory is still 130.0 MB. Free memory was 70.3 MB in the beginning and 67.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:57:26,463 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 88.1 MB. Free memory was 67.6 MB in the beginning and 67.5 MB in the end (delta: 43.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 546.96 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 49.7 MB in the beginning and 77.1 MB in the end (delta: -27.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 73.90 ms. Allocated memory is still 107.0 MB. Free memory was 77.1 MB in the beginning and 74.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 556.62 ms. Allocated memory is still 107.0 MB. Free memory was 74.8 MB in the beginning and 57.7 MB in the end (delta: 17.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7638.39 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 57.0 MB in the beginning and 70.3 MB in the end (delta: -13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 16.1 GB. * Witness Printer took 71.47 ms. Allocated memory is still 130.0 MB. Free memory was 70.3 MB in the beginning and 67.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 517]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 517]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 519]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 40 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 7532.2ms, OverallIterations: 9, TraceHistogramMax: 3, EmptinessCheckTime: 23.4ms, AutomataDifference: 2618.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 150 SDtfs, 274 SDslu, 323 SDs, 0 SdLazy, 1055 SolverSat, 122 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 861.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 195 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 2477.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=7, InterpolantAutomatonStates: 90, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 79.7ms AutomataMinimizationTime, 9 MinimizatonAttempts, 16 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 58.1ms SsaConstructionTime, 279.2ms SatisfiabilityAnalysisTime, 3108.3ms InterpolantComputationTime, 209 NumberOfCodeBlocks, 209 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 197 ConstructedInterpolants, 0 QuantifiedInterpolants, 1236 SizeOfPredicates, 26 NumberOfNonLiveVariables, 327 ConjunctsInSsa, 106 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 6/34 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-21 19:57:26,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d411942b-3489-4e69-bae2-cd15acef6027/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...